Velsipity

6 ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in the labeling: • Infections [see Warnings and Precautions (5.1) ] • Bradyarrhythmia and Atrioventricular Conduction Delays [see Warnings and Precautions (5.2) ] • Liver Injury [see Warnings and Precautions (5.3) ] • Macular Edema [see Warnings and Precautions (5.4) ] • Increased Blood Pressure [see Warnings and Precautions (5.5) ] • Fetal Risk [see Warnings and Precautions (5.6) ] • Malignancies [see Warnings and Precautions (5.7) ] • Posterior Reversible Encephalopathy Syndrome [see Warnings and Precautions (5.8) ] • Respiratory Effects [see Warnings and Precautions (5.9) ] • Unintended Additive Immune System Effects from Prior Treatment with Immunosuppressive or Immune-Modulating Drugs [see Warnings and Precautions (5.10) ] • Immune System Effects After Stopping VELSIPITY [see Warnings and Precautions (5.11) ] Most common adverse reactions (incidence ≥5%) are: headache, elevated liver tests, and dizziness. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Pfizer Inc. at 1-800-438-1985 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. The safety of VELSIPITY 2 mg once daily in subjects with moderately to severely active ulcerative colitis was evaluated in two randomized, placebo-controlled studies of 52 weeks (UC-1) and 12 weeks (UC-2) duration [see Clinical Studies (14) ]. Additional safety data were obtained from a randomized, double-blind, placebo-controlled dose-finding study of 12 weeks duration (UC-3). In the 52-week study (UC-1), 433 subjects were enrolled of whom 289 received VELSIPITY 2 mg once daily. In the 12-week studies (UC-2 and UC-3), 458 subjects were enrolled of whom 288 received VELSIPITY 2 mg once daily. Table 1 summarizes the adverse reactions reported in at least 2% of subjects and at a higher rate than placebo during UC-1. Table 1: Adverse Reactions Reported in at least 2% of subjects and at a higher rate than placebo. in Subjects with Ulcerative Colitis in a Placebo-Controlled 52-Week Study (UC-1) Adverse Reaction VELSIPITY 2 mg Once Daily N = 289 % Placebo N = 144 % Headache Headache includes related terms headache, migraine, and tension headache. 9 5 Elevated liver tests Elevated liver tests includes related terms ALT increased, AST increased, blood alkaline phosphatase increased, cholestasis, GGT increased, hepatic enzyme increased, hyperbilirubinemia, liver function test increased, and transaminases increased. 6 5 Dizziness Dizziness includes related terms dizziness, dizziness exertional, and dizziness postural. 5 2 Arthralgia 4 2 Hypertension Hypertension includes related terms hypertension, and blood pressure increased. 3 1 Urinary tract infection Urinary tract infection includes related terms urinary tract infection and cystitis. 3 2 Nausea 3 1 Hypercholesterolemia Hypercholesterolemia includes related terms hypercholesterolemia and blood cholesterol increased. 3 0 Herpes viral infection Herpes viral infection includes related terms herpes zoster, oral herpes, and herpes simplex. 2 1 Table 2 summarizes the adverse reactions reported in at least 2% of subjects and at a higher rate than placebo during UC-2 and UC-3. Table 2: Adverse Reactions Reported in at least 2% of subjects and at a higher rate than placebo. in Subjects with Ulcerative Colitis in Placebo-Controlled 12-Week Studies (UC-2 and UC-3) Adverse Reaction VELSIPITY 2 mg Once Daily N = 288 % Study-size adjusted % for each group are based on the Mantel-Haenszel weights. Placebo N = 170 % Headache Headache includes related terms headache, migraine, and sinus headache. 6 4 Elevated liver tests Elevated liver tests includes related terms ALT increased, AST increased, blood alkaline phosphatase increased, blood bilirubin increased, cholestasis, GGT increased, hepatic enzyme increased, hepatic function abnormal, liver function test abnormal, and transaminases increased. 5 <1 Nausea 4 2 Bradycardia Bradycardia includes related terms bradycardia, sinus bradycardia, and heart rate decreased. 3 0 Urinary tract infection Urinary tract infection includes related terms urinary tract infection, cystitis, and genitourinary tract infection. 3 0 Ophthalmologic Findings In UC-1, for subjects with a baseline and follow-up examination, a decrease in visual acuity was reported in 2.6% (4/156) of subjects who received VELSIPITY and no subjects who received placebo [see Warnings and Precautions (5.4) ] .

4 CONTRAINDICATIONS VELSIPITY is contraindicated in patients who: • In the last 6 months, have experienced a myocardial infarction, unstable angina pectoris, stroke, transient ischemic attack (TIA), decompensated heart failure requiring hospitalization, or Class III or IV heart failure [see Warnings and Precautions (5.2) ] . • Have a history or presence of Mobitz type II second-degree or third-degree AV block, sick sinus syndrome, or sino-atrial block, unless the patient has a functioning pacemaker [see Warnings and Precautions (5.2) ] . • In the last 6 months, experienced myocardial infarction, unstable angina pectoris, stroke, transient ischemic attack, decompensated heart failure requiring hospitalization, or Class III or IV heart failure. ( 4 , 5.2 ) • History or presence of Mobitz type II second-degree or third-degree atrioventricular (AV) block, sick sinus syndrome, or sino-atrial block, unless the patient has a functioning pacemaker. ( 4 , 5.2 )

11 DESCRIPTION VELSIPITY contains etrasimod, a sphingosine 1-phosphate (S1P) receptor modulator, supplied as etrasimod arginine. Etrasimod arginine is a white, off-white to light brown solid that is slightly soluble in water. The chemical name of etrasimod arginine is L-Arginine, (3 R )-7-[[4-cyclopentyl-3-(trifluoromethyl)phenyl]methoxy]-1,2,3,4-tetrahydrocyclopent[ b ]indole-3-acetate (1:1) having a molecular formula of C 32 H 40 F 3 N 5 O 5 and a molecular weight of 631.69 g/mol. The chemical structure of etrasimod arginine is: VELSIPITY is supplied for oral administration as 2 mg tablets. Each tablet contains 2 mg etrasimod (equivalent to 2.76 mg etrasimod arginine) and the following inactive ingredients: magnesium stearate, mannitol, microcrystalline cellulose, and sodium starch glycolate, with a film coating containing FD&C blue #1/brilliant blue FCF aluminum lake, FD&C blue #2/indigo carmine aluminum lake, FD&C yellow #5/tartrazine aluminum lake, macrogol 4000 JP/PEG 3350, polyvinyl alcohol (partially hydrolyzed), talc, and titanium dioxide. Chemical Structure

2 DOSAGE AND ADMINISTRATION • Assessments are required prior to initiating VELSIPITY. ( 2.1 ) • The recommended dosage is 2 mg orally once daily. ( 2.2 ) 2.1 Assessments, Medications, and Vaccinations Prior to First Dose of VELSIPITY Before initiation of treatment with VELSIPITY, assess the following: Complete Blood Count Obtain a recent (i.e., within the last 6 months or after discontinuation of prior UC therapy) complete blood count (CBC), including lymphocyte count [see Warnings and Precautions (5.1) ]. Cardiac Evaluation Obtain an electrocardiogram (ECG) to determine whether preexisting conduction abnormalities are present. In patients with certain preexisting conditions, advice from a cardiologist should be sought [see Warnings and Precautions (5.2) ] . Liver Function Tests Obtain recent (i.e., within the last 6 months) transaminase and bilirubin levels [see Warnings and Precautions (5.3) ]. Ophthalmic Assessment Obtain a baseline evaluation of the fundus, including the macula, near the start of treatment with VELSIPITY [see Warnings and Precautions (5.4) ]. Current or Prior Medications • Determine if patients are taking drugs that could slow heart rate or atrioventricular (AV) conduction [see Warnings and Precautions (5.2) and Drug Interactions (7) ]. • If patients are taking anti-neoplastic, immune-modulating, or non-corticosteroid immunosuppressive therapies, or if there is a history of prior use of these drugs, consider possible unintended additive immunosuppressive effects before initiating treatment with VELSIPITY [see Warnings and Precautions (5.10) and Drug Interactions (7) ]. Vaccinations Patients without a healthcare professional-confirmed history of varicella (chickenpox) or without documentation of a full course of vaccination against varicella zoster virus (VZV) should be tested for antibodies to VZV before initiating VELSIPITY; VZV vaccination of antibody-negative patients is recommended prior to commencing treatment with VELSIPITY. If live attenuated vaccine immunizations are required, administer at least 4 weeks prior to initiation of VELSIPITY. Update immunizations in agreement with current immunization guidelines prior to initiating VELSIPITY therapy [see Warnings and Precautions (5.1) ]. Skin Examination Obtain a skin examination prior to or shortly after initiation of VELSIPITY. If a suspicious skin lesion is observed, it should be promptly evaluated [see Warnings and Precautions (5.7) ] . 2.2 Recommended Dosage • The recommended dosage of VELSIPITY is 2 mg orally once daily. • Swallow the tablet whole, with or without food [see Clinical Pharmacology (12.3) ] .

1 INDICATIONS AND USAGE VELSIPITY is indicated for the treatment of moderately to severely active ulcerative colitis (UC) in adults. VELSIPITY is a sphingosine 1-phosphate receptor modulator indicated for the treatment of moderately to severely active ulcerative colitis in adults. ( 1 )

7 DRUG INTERACTIONS Etrasimod is primarily metabolized by CYP2C8, CYP2C9, and CYP3A4. Table 3 includes drugs with clinically important drug interactions when administered concomitantly with VELSIPITY and instructions for preventing or managing them. Consult the labeling of concomitantly used drugs to obtain further information. The effect of concomitant use of VELSIPITY with a combination of separate drugs that are moderate to strong inhibitors or inducers of either CYP2C8, CYP2C9, or CYP3A4 is unknown. However, based on the information below, a similar clinically significant change in exposure cannot be ruled out when two or more metabolic pathways are affected. Table 3: Drugs That Affect VELSIPITY CYP-Mediated Metabolic Pathways Anti-Arrhythmic Drugs and QT Prolonging Drugs Clinical Impact A transient decrease in heart rate and AV conduction delays may occur when initiating VELSIPITY [see Warnings and Precautions (5.2) ] . Because of the potential additive effect on heart rate, VELSIPITY may increase the risk of QT prolongation and Torsades de Pointes with concomitant use of Class Ia and Class III anti-arrhythmic drugs and QT prolonging drugs. Prevention or Management Seek the advice of a cardiologist before initiating VELSIPITY treatment with Class Ia (e.g., quinidine, procainamide), Class III anti-arrhythmic drugs (e.g., amiodarone, sotalol), or other drugs that prolong the QT interval. Beta-Blockers or Calcium Channel Blockers Clinical Impact A transient decrease in heart rate and AV conduction delays may occur when initiating VELSIPITY [see Warnings and Precautions (5.2) ] . Concomitant use of VELSIPITY in patients receiving stable beta blocker treatment did not result in additive effects on heart rate reduction [see Clinical Pharmacology (12.2) ] . However, the risk of additive heart rate reduction following initiation of beta blocker therapy with stable VELSIPITY treatment or concomitant use with other drugs that may decrease heart rate is unknown. Prevention or Management VELSIPITY can be initiated in patients receiving stable doses of beta blocker treatment. Seek the advice of a cardiologist before initiating a beta blocker in a patient receiving stable VELSIPITY treatment or concomitant use with other drugs that may decrease heart rate (e.g., calcium channel blockers). Anti-Neoplastic, Immune-Modulating, or Non-Corticosteroid Immunosuppressive Therapies Clinical Impact Risk of additive immune system effects with VELSIPITY VELSIPITY has not been studied in combination with anti-neoplastic, immune-modulating, or non-corticosteroid immunosuppressive therapies. Prevention or Management Avoid concomitant administration during and in the weeks following administration of VELSIPITY. When switching from drugs with prolonged immune effects, consider the half-life and mode of action of these drugs to avoid unintended additive immunosuppressive effects [see Warnings and Precautions (5.10) ] . Moderate to Strong Inhibitors of CYP2C9 and CYP3A4 Clinical Impact Increased exposure of etrasimod was observed with concomitant use with a drug that is a moderate inhibitor of CYP2C9 and a moderate inhibitor of CYP3A4 (i.e., fluconazole) [see Clinical Pharmacology (12.3) ] . Prevention or Management Concomitant use with a drug that is a moderate to strong inhibitor of CYP2C9 and a moderate to strong inhibitor of CYP3A4 is not recommended. CYP2C9 Poor Metabolizers Using Moderate to Strong Inhibitors of CYP2C8 or CYP3A4 Clinical Impact Increased exposure of etrasimod in patients who are CYP2C9 poor metabolizers is expected with concomitant use of moderate to strong inhibitors of CYP2C8 or CYP3A4 [see Clinical Pharmacology (12.3 , 12.5) ] . Prevention or Management Concomitant use not recommended. Rifampin Clinical Impact Concomitant use with a drug that is a combined CYP3A4 (strong), CYP2C8 (moderate) and CYP2C9 (moderate) inducer (i.e., rifampin) decreases exposure to etrasimod [see Clinical Pharmacology (12.3) ] . Prevention or Management Concomitant use not recommended. See full prescribing information for a list of clinically important drug interactions. ( 7 )

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Etrasimod is a sphingosine 1-phosphate (S1P) receptor modulator that binds with high affinity to S1P receptors 1, 4, and 5 (S1P 1,4,5 ). Etrasimod has minimal activity on S1P 3 (25-fold lower than C max at the recommended dose) and no activity on S1P 2 . Etrasimod partially and reversibly blocks the capacity of lymphocytes to egress from lymphoid organs, reducing the number of lymphocytes in peripheral blood. The mechanism by which etrasimod exerts therapeutic effects in UC is unknown but may involve the reduction of lymphocyte migration into the intestines. 12.2 Pharmacodynamics Reduction in Blood Lymphocyte Counts VELSIPITY causes a reduction in peripheral blood lymphocyte count [see Warnings and Precautions (5.1) ]. In UC-1 and UC-2, mean lymphocyte counts decreased to approximately 50% of baseline at 2 weeks (approximate mean blood lymphocyte counts 0.9 x 10 9 /L) and the lower lymphocyte counts were maintained during treatment with VELSIPITY. Dose-response relationship analysis indicates there is a dose-dependent reduction in blood lymphocyte counts. After discontinuing VELSIPITY 2 mg once daily, the median time for peripheral blood lymphocytes to return to the normal range was 2.6 weeks, with approximately 90% of subjects in the normal range within 4.7 weeks. Reduction in Heart Rate and AV Conduction Delays VELSIPITY may result in a transient decrease in heart rate and AV conduction upon treatment initiation [see Warnings and Precautions (5.2) ]. In UC-1 and UC-2, the mean (SD) decrease in heart rate was 7.2 (8.98) bpm at 2 to 3 hours after the first dose of VELSIPITY on Day 1. Cardiac Electrophysiology At 2 times the maximum recommended dose, etrasimod does not cause clinically significant QTc interval prolongation. Pulmonary Function Reductions in absolute FEV 1 were observed in subjects treated with VELSIPITY [see Warnings and Precautions (5.9) ] . Drug Interaction Studies No clinically significant differences in heart rate reduction were observed when etrasimod was used concomitantly with stable beta blocker treatment. The effect of concomitant use of etrasimod with a calcium channel blocker on heart rate reduction is unknown [see Drug Interactions (7) ] . 12.3 Pharmacokinetics Etrasimod mean (SD) steady-state maximum plasma concentration (C max ) was 113 (27.5) ng/mL and area under the time concentration curve at the dosing interval (AUC tau ) was 2162 (488) ng*h/mL at the recommended dosage. Etrasimod C max and AUC are approximately dose proportional from 0.7 mg to 2 mg (0.35 times up to the recommended dosage). Etrasimod steady state is reached within 7 days with an accumulation of approximately 2- to 3-fold compared to the first dose. Absorption The median (range) time to reach etrasimod C max (T max ) is approximately 4 hours (range 2 to 8 hours) after oral administration. Effect of Food No clinically significant differences in the pharmacokinetics of etrasimod were observed following administration of VELSIPITY with a high-fat meal (800 to 1000 calories) [see Dosage and Administration (2.2) ] . Distribution The mean apparent volume of distribution of etrasimod is 66 (24) L. Etrasimod plasma protein binding is 97.9%. Elimination The mean plasma elimination half-life (t 1/2 ) of etrasimod is approximately 30 hours with an apparent steady-state oral clearance of approximately 1 L/h after oral administration. Metabolism Etrasimod is metabolized by oxidation and dehydrogenation mediated primarily by CYP2C8, CYP2C9, and CYP3A4, with a minor contribution by CYP2C19 and CYP2J2. Etrasimod also undergoes conjugation primarily mediated by UGTs, with a minor contribution by sulfotransferases. Unchanged etrasimod is the main circulating component in plasma. Excretion Approximately 82% of total radioactive etrasimod dose was recovered in the feces and 5% in the urine within 336 hours. Approximately 11% of administered radioactive dose was excreted as unchanged etrasimod in feces and none was excreted unchanged in urine. Specific Populations No clinically significant differences in the pharmacokinetics of etrasimod were observed based on age (>65 years), sex, body weight, race, ethnicity, disease (healthy subjects vs. subjects with ulcerative colitis), and severe renal impairment (eGFR ≤29 mL/min). Patients with Hepatic Impairment Etrasimod AUC increased by 13% in subjects with mild (Child-Pugh A), 29% in moderate (Child-Pugh B), and 57% in severe (Child-Pugh C) hepatic impairment, respectively, compared with subjects with normal liver function. No clinically significant difference in the unbound etrasimod AUC was observed [see Use in Specific Populations (8.6) ] . Drug Interaction Studies Clinical Studies Combined moderate CYP2C9 and CYP3A4 inhibitors: Concomitant use of etrasimod with steady-state fluconazole (moderate CYP2C9 and CYP3A4 inhibitor) increased etrasimod AUC by 84% [see Drug Interactions (7) ] . Combined CYP3A4 (strong), CYP2C8 (moderate) and CYP2C9 (moderate) inducers: Concomitant use of etrasimod with rifampin (strong CYP3A4, moderate CYP2C8, and CYP2C9 inducer) decreased etrasimod AUC by 49% [see Drug Interactions (7) ]. Oral Contraceptives: No clinically significant differences in the pharmacokinetics and pharmacodynamics of oral contraceptive containing 30 mcg ethinyl estradiol and 150 mcg levonorgestrel were observed when used concomitantly with etrasimod. Other Drugs: Itraconazole (a P-gp and strong CYP3A inhibitor) increased etrasimod AUC by 32%. Gemfibrozil (an inhibitor of OATP1B1 and OAT3 and a strong inhibitor of CYP2C8) increased etrasimod AUC by 36%. These effects are unlikely to be clinically significant. In Vitro Studies Based on in vitro studies, etrasimod is not an inhibitor of CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, and CYP3A4, nor an inducer of CYP1A2, CYP2B6, and CYP3A4 at clinically relevant concentrations. Etrasimod is not an inhibitor of UGT1A3, UGT1A4, UGT1A9, UGT2B7, or UGT2B17 in vitro. Etrasimod is not a substrate or an inhibitor of P-gp, BCRP, BSEP, OATP1B1, OATP1B3, OAT1, OAT3, OCT1, OCT2, MATE1, and MATE2-K transporters. 12.5 Pharmacogenomics CYP2C9 activity is decreased in individuals with genetic variants such as CYP2C9*2 and CYP2C9*3 alleles. The impact of CYP2C9 genetic variants on the pharmacokinetics of etrasimod has not been directly evaluated. CYP2C9 poor metabolizers (e.g., *2/*3, *3/*3) may have decreased clearance of etrasimod when VELSIPITY is used concomitantly with moderate to strong inhibitors of CYP2C8 or CYP3A4 [see Drug Interactions (7) and Use in Specific Populations (8.7) ] . CYP2C9 intermediate metabolizers (e.g., *1/*2, *1/*3, *2/*2) may have decreased clearance of etrasimod when VELSIPITY is used concomitantly with moderate to strong inhibitors of CYP2C8 or CYP3A4; however, the effect on VELSIPITY exposure in CYP2C9 intermediate metabolizers with concomitant CYP2C8 or CYP3A4 inhibitors is not known. The prevalence of the CYP2C9 poor metabolizer phenotype is approximately 2 to 3% in White populations, 0.5 to 4% in Asian populations, and <1% in African-American populations. Other decreased or nonfunctional CYP2C9 alleles (e.g., *5, *6, *8, *11) are more prevalent in African-American populations.

12.1 Mechanism of Action Etrasimod is a sphingosine 1-phosphate (S1P) receptor modulator that binds with high affinity to S1P receptors 1, 4, and 5 (S1P 1,4,5 ). Etrasimod has minimal activity on S1P 3 (25-fold lower than C max at the recommended dose) and no activity on S1P 2 . Etrasimod partially and reversibly blocks the capacity of lymphocytes to egress from lymphoid organs, reducing the number of lymphocytes in peripheral blood. The mechanism by which etrasimod exerts therapeutic effects in UC is unknown but may involve the reduction of lymphocyte migration into the intestines.

12.2 Pharmacodynamics Reduction in Blood Lymphocyte Counts VELSIPITY causes a reduction in peripheral blood lymphocyte count [see Warnings and Precautions (5.1) ]. In UC-1 and UC-2, mean lymphocyte counts decreased to approximately 50% of baseline at 2 weeks (approximate mean blood lymphocyte counts 0.9 x 10 9 /L) and the lower lymphocyte counts were maintained during treatment with VELSIPITY. Dose-response relationship analysis indicates there is a dose-dependent reduction in blood lymphocyte counts. After discontinuing VELSIPITY 2 mg once daily, the median time for peripheral blood lymphocytes to return to the normal range was 2.6 weeks, with approximately 90% of subjects in the normal range within 4.7 weeks. Reduction in Heart Rate and AV Conduction Delays VELSIPITY may result in a transient decrease in heart rate and AV conduction upon treatment initiation [see Warnings and Precautions (5.2) ]. In UC-1 and UC-2, the mean (SD) decrease in heart rate was 7.2 (8.98) bpm at 2 to 3 hours after the first dose of VELSIPITY on Day 1. Cardiac Electrophysiology At 2 times the maximum recommended dose, etrasimod does not cause clinically significant QTc interval prolongation. Pulmonary Function Reductions in absolute FEV 1 were observed in subjects treated with VELSIPITY [see Warnings and Precautions (5.9) ] . Drug Interaction Studies No clinically significant differences in heart rate reduction were observed when etrasimod was used concomitantly with stable beta blocker treatment. The effect of concomitant use of etrasimod with a calcium channel blocker on heart rate reduction is unknown [see Drug Interactions (7) ] .

12.3 Pharmacokinetics Etrasimod mean (SD) steady-state maximum plasma concentration (C max ) was 113 (27.5) ng/mL and area under the time concentration curve at the dosing interval (AUC tau ) was 2162 (488) ng*h/mL at the recommended dosage. Etrasimod C max and AUC are approximately dose proportional from 0.7 mg to 2 mg (0.35 times up to the recommended dosage). Etrasimod steady state is reached within 7 days with an accumulation of approximately 2- to 3-fold compared to the first dose. Absorption The median (range) time to reach etrasimod C max (T max ) is approximately 4 hours (range 2 to 8 hours) after oral administration. Effect of Food No clinically significant differences in the pharmacokinetics of etrasimod were observed following administration of VELSIPITY with a high-fat meal (800 to 1000 calories) [see Dosage and Administration (2.2) ] . Distribution The mean apparent volume of distribution of etrasimod is 66 (24) L. Etrasimod plasma protein binding is 97.9%. Elimination The mean plasma elimination half-life (t 1/2 ) of etrasimod is approximately 30 hours with an apparent steady-state oral clearance of approximately 1 L/h after oral administration. Metabolism Etrasimod is metabolized by oxidation and dehydrogenation mediated primarily by CYP2C8, CYP2C9, and CYP3A4, with a minor contribution by CYP2C19 and CYP2J2. Etrasimod also undergoes conjugation primarily mediated by UGTs, with a minor contribution by sulfotransferases. Unchanged etrasimod is the main circulating component in plasma. Excretion Approximately 82% of total radioactive etrasimod dose was recovered in the feces and 5% in the urine within 336 hours. Approximately 11% of administered radioactive dose was excreted as unchanged etrasimod in feces and none was excreted unchanged in urine. Specific Populations No clinically significant differences in the pharmacokinetics of etrasimod were observed based on age (>65 years), sex, body weight, race, ethnicity, disease (healthy subjects vs. subjects with ulcerative colitis), and severe renal impairment (eGFR ≤29 mL/min). Patients with Hepatic Impairment Etrasimod AUC increased by 13% in subjects with mild (Child-Pugh A), 29% in moderate (Child-Pugh B), and 57% in severe (Child-Pugh C) hepatic impairment, respectively, compared with subjects with normal liver function. No clinically significant difference in the unbound etrasimod AUC was observed [see Use in Specific Populations (8.6) ] . Drug Interaction Studies Clinical Studies Combined moderate CYP2C9 and CYP3A4 inhibitors: Concomitant use of etrasimod with steady-state fluconazole (moderate CYP2C9 and CYP3A4 inhibitor) increased etrasimod AUC by 84% [see Drug Interactions (7) ] . Combined CYP3A4 (strong), CYP2C8 (moderate) and CYP2C9 (moderate) inducers: Concomitant use of etrasimod with rifampin (strong CYP3A4, moderate CYP2C8, and CYP2C9 inducer) decreased etrasimod AUC by 49% [see Drug Interactions (7) ]. Oral Contraceptives: No clinically significant differences in the pharmacokinetics and pharmacodynamics of oral contraceptive containing 30 mcg ethinyl estradiol and 150 mcg levonorgestrel were observed when used concomitantly with etrasimod. Other Drugs: Itraconazole (a P-gp and strong CYP3A inhibitor) increased etrasimod AUC by 32%. Gemfibrozil (an inhibitor of OATP1B1 and OAT3 and a strong inhibitor of CYP2C8) increased etrasimod AUC by 36%. These effects are unlikely to be clinically significant. In Vitro Studies Based on in vitro studies, etrasimod is not an inhibitor of CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, and CYP3A4, nor an inducer of CYP1A2, CYP2B6, and CYP3A4 at clinically relevant concentrations. Etrasimod is not an inhibitor of UGT1A3, UGT1A4, UGT1A9, UGT2B7, or UGT2B17 in vitro. Etrasimod is not a substrate or an inhibitor of P-gp, BCRP, BSEP, OATP1B1, OATP1B3, OAT1, OAT3, OCT1, OCT2, MATE1, and MATE2-K transporters.

20231117

1

3 DOSAGE FORMS AND STRENGTHS Tablets: 2 mg of etrasimod as a round, green, film-coated tablet, debossed with “ETR” on one side and “2” on the other side. Tablets: 2 mg of etrasimod ( 3 )

Velsipity etrasimod ETRASIMOD ARGININE ETRASIMOD MAGNESIUM STEARATE MANNITOL MICROCRYSTALLINE CELLULOSE SODIUM STARCH GLYCOLATE TYPE A FD&C BLUE NO. 1 ALUMINUM LAKE FD&C BLUE NO. 2 ALUMINUM LAKE FD&C YELLOW NO. 5 ALUMINUM LAKE POLYETHYLENE GLYCOL 3350 POLYVINYL ALCOHOL, UNSPECIFIED TALC TITANIUM DIOXIDE ETR;2

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Oral carcinogenicity studies with etrasimod were conducted in mice and rats. In mice administered etrasimod (2, 6, or 20 mg/kg/day) for up to 104 weeks, there was an increase in hemangiosarcoma and hemangioma in males and females at 6 and 20 mg/kg/day (exposures approximately 42 and 121 times, respectively, the exposure at the MRHD of 2 mg, based on AUC comparison). In rats, oral administration of etrasimod (2, 6, or 20 mg/kg/day) for up to 91 weeks did not result in an increase in tumors (male and female exposures 80 and 179 times, respectively, the exposure at the MRHD). Mutagenesis Etrasimod was negative in a battery of in vitro (Ames, chromosomal aberration in human peripheral blood lymphocytes) and in vivo (rat micronucleus) assays. Impairment of Fertility Etrasimod administered orally to male rats at 25, 100, or 200 mg/kg/day from pre-mating through mating had no adverse effects on male fertility at exposures up to 467 times the exposure at the MRHD of 2 mg, based on AUC comparison. Etrasimod administered orally to female rats at 1, 2, or 4 mg/kg/day from pre-mating to implantation had no adverse effects on female fertility at exposures up to 21 times the exposure at the MRHD.

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenesis Oral carcinogenicity studies with etrasimod were conducted in mice and rats. In mice administered etrasimod (2, 6, or 20 mg/kg/day) for up to 104 weeks, there was an increase in hemangiosarcoma and hemangioma in males and females at 6 and 20 mg/kg/day (exposures approximately 42 and 121 times, respectively, the exposure at the MRHD of 2 mg, based on AUC comparison). In rats, oral administration of etrasimod (2, 6, or 20 mg/kg/day) for up to 91 weeks did not result in an increase in tumors (male and female exposures 80 and 179 times, respectively, the exposure at the MRHD). Mutagenesis Etrasimod was negative in a battery of in vitro (Ames, chromosomal aberration in human peripheral blood lymphocytes) and in vivo (rat micronucleus) assays. Impairment of Fertility Etrasimod administered orally to male rats at 25, 100, or 200 mg/kg/day from pre-mating through mating had no adverse effects on male fertility at exposures up to 467 times the exposure at the MRHD of 2 mg, based on AUC comparison. Etrasimod administered orally to female rats at 1, 2, or 4 mg/kg/day from pre-mating to implantation had no adverse effects on female fertility at exposures up to 21 times the exposure at the MRHD.

NDA216956

Velsipity

etrasimod

63539-274

HUMAN PRESCRIPTION DRUG

ORAL

PRINCIPAL DISPLAY PANEL - 2 mg Tablet Bottle Label ALWAYS DISPENSE WITH MEDICATION GUIDE PROFESSIONAL SAMPLE–NOT FOR SALE NDC 63539-274-28 Pfizer Velsipity™ (etrasimod) tablets 2 mg Recommended Dosage: See Prescribing Information 28 Tablets Rx only PRINCIPAL DISPLAY PANEL - 2 mg Tablet Bottle Label

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17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Medication Guide). Risk of Infections Inform patients that they may be more likely to get infections, some of which could be life-threatening, when taking VELSIPITY and for 5 weeks after stopping it, and that they should contact their healthcare provider if they develop symptoms of infection [see Warnings and Precautions (5.1) ]. Inform patients that prior or concomitant use of drugs that suppress the immune system may increase the risk of infection. Advise patients that some vaccines containing live virus (live attenuated vaccines) should be avoided during treatment with VELSIPITY. Advise patients that if immunizations are planned, they should be administered at least 4 weeks prior to initiation of VELSIPITY. Inform patients that the use of live attenuated vaccines should be avoided during and for 5 weeks after treatment with VELSIPITY. Cardiac Effects Advise patients that initiation of VELSIPITY treatment may result in transient decrease in heart rate [see Warnings and Precautions (5.2) ] . Liver Injury Inform patients that VELSIPITY may increase liver enzymes. Advise patients that they should contact their healthcare provider if they have any unexplained nausea, vomiting, abdominal pain, fatigue, anorexia, or jaundice and/or dark urine [see Warnings and Precautions (5.3) ]. Macular Edema Advise patients that VELSIPITY may cause macular edema, and that they should obtain an eye exam near the start of treatment with VELSIPITY, have their eyes monitored periodically by an eye care professional while receiving therapy, and contact their healthcare provider if they experience any changes in their vision while taking VELSIPITY [see Warnings and Precautions (5.4) ]. Fetal Risk VELSIPITY may cause fetal harm. Advise females to immediately inform their healthcare provider of a known or suspected pregnancy [see Warnings and Precautions (5.6) and Use in Specific Populations (8.1) ] . Advise females of reproductive potential to use effective contraception during treatment with VELSIPITY and for one week after stopping VELSIPITY [see Use in Specific Populations (8.3) ] . Pregnancy and Pregnancy Registry Advise patients that there is a pregnancy registry that monitors pregnancy outcomes in women exposed to VELSIPITY during pregnancy [see Use in Specific Populations (8.1) ]. Malignancies Advise patients to limit exposure to sunlight and ultraviolet (UV) light, wear protective clothing, and use a sunscreen with a high protection factor. If a suspicious skin lesion is observed, patients should immediately report it to their healthcare provider [see Warnings and Precautions (5.7) ]. Posterior Reversible Encephalopathy Syndrome Advise patients to immediately report to their healthcare provider any symptoms involving sudden onset of severe headache, altered mental status, visual disturbances, or seizure. Inform patients that delayed treatment could lead to permanent neurological consequences [see Warnings and Precautions (5.8) ]. Respiratory Effects Advise patients that they should contact their healthcare provider if they experience new onset or worsening dyspnea [see Warnings and Precautions (5.9) ]. Immune System Effects after Stopping VELSIPITY Advise patients that VELSIPITY continues to have effects, such as lowering effects on peripheral lymphocyte count, for up to 5 weeks after the last dose, and to monitor for signs and symptoms of infection during that time [see Warnings and Precautions (5.11) ]. This product’s labeling may have been updated. For the most recent prescribing information, please visit www.pfizer.com . For Medical Information about VELSIPITY, please visit www.pfizermedinfo.com or call 1-800-438-1985.

This Medication Guide has been approved by the U.S. Food and Drug Administration. Issued: October 2023 MEDICATION GUIDE VELSIPITY™ (Vel-sip-itee) (etrasimod) tablets, for oral use Read this Medication Guide before you start taking VELSIPITY and each time you get a refill. There may be new information. This Medication Guide does not take the place of talking with your healthcare provider about your medical condition or treatment. What is the most important information I should know about VELSIPITY? VELSIPITY can cause serious side effects, including: 1. Infections. VELSIPITY can increase your risk of serious infections. These infections can be life-threatening and cause death. VELSIPITY lowers the number of white blood cells (lymphocytes) in your blood. This usually returns to normal within 4 to 5 weeks after you stop taking VELSIPITY. Your healthcare provider will test your blood before you start taking VELSIPITY. Call your healthcare provider right away if you have any of these symptoms of an infection during treatment with VELSIPITY, and for 5 weeks after you stop taking VELSIPITY: • fever or high temperature • tiredness • flu-like symptoms • pain when peeing or peeing more often than usual. These can be signs of a urinary tract infection. • headache with fever, neck stiffness, sensitivity to light, nausea, or confusion. These may be symptoms of meningitis, an infection of the lining around your brain and spine. Your healthcare provider may delay or stop your VELSIPITY treatment if you have an infection. 2. Slow heart rate (also known as bradyarrhythmia) when you start taking VELSIPITY. VELSIPITY may cause your heart rate to temporarily slow down especially after you take your first dose. You will have a test called an electrocardiogram (ECG) to check the electrical activity of your heart before you take your first dose of VELSIPITY. Call your healthcare provider if you experience these symptoms of slow heart rate: • feeling dizzy • feeling lightheaded • feeling like your heart is beating slowly or skipping beats • feeling short of breath • feeling confused • feeling tired • chest pain See " What are the possible side effects of VELSIPITY? " for more information about side effects. What is VELSIPITY? • VELSIPITY is a prescription medicine used to treat adults with moderately to severely active ulcerative colitis. It is not known if VELSIPITY is safe and effective in children. Do not take VELSIPITY if you: • have had a heart attack, chest pain (unstable angina), stroke or mini stroke (transient ischemic attack or TIA), and certain types of heart failure requiring hospitalization in the last 6 months. • have or have had a history of unusual heartbeats (arrhythmia) that is not corrected by a pacemaker. Talk to your healthcare provider before taking VELSIPITY if you have any of these conditions or do not know if you have any of these conditions. Before taking VELSIPITY, tell your healthcare provider about all of your medical conditions, including if you: • have a serious infection or an infection that does not go away or that keeps coming back (chronic). • are unable to fight infections due to a disease. • have received a vaccine in the past 4 weeks or are scheduled to receive a vaccine. You should be brought up to date with all age required vaccines before starting treatment with VELSIPITY. VELSIPITY may affect how well a vaccine works. Tell your healthcare provider that you are receiving treatment with VELSIPITY before receiving a vaccine. • have chickenpox or received the vaccine for chickenpox. Your healthcare provider may do a blood test for the chickenpox virus. You may need to get the full course of the chickenpox vaccine and then wait 4 weeks before you start taking VELSIPITY. • have a slow heart rate. • have an irregular or abnormal heartbeat (arrhythmia). • have heart disease, Class I or II heart failure, history of a heart attack, high blood pressure or uncontrolled high blood pressure. • have cerebrovascular disease or history of a stroke or ministroke. • history of repeated fainting. • have or have had liver problems. • have or have had skin cancer. • have breathing problems, including untreated sleep apnea. • are pregnant or plan to become pregnant. VELSIPITY may harm your unborn baby. Talk with your healthcare provider if you are pregnant or plan to become pregnant. If you are a female who can become pregnant, you should use effective birth control during your treatment with VELSIPITY and for 7 days after you stop taking VELSIPITY. Talk to your healthcare provider about what birth control method is right for you during this time. Tell your healthcare provider right away if you become pregnant while taking VELSIPITY or within 7 days after you stop taking VELSIPITY. Pregnancy Registry : There is a registry for women who become pregnant during treatment with VELSIPITY. If you become pregnant while taking VELSIPITY, talk to your healthcare provider about registering with the VELSIPITY Pregnancy Registry. The purpose of this registry is to collect information about your health and your baby’s health. Either you or your healthcare provider can contact this registry by calling 1-800-616-3791. • are breastfeeding or plan to breastfeed. It is not known if VELSIPITY passes into your breast milk. Talk to your healthcare provider about the best way to feed your baby if you take VELSIPITY. Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Using VELSIPITY with other medicines can cause serious side effects. Especially tell your healthcare provider if you take or have taken: • medicines to control your heart rhythm (antiarrhythmics), heartbeat, or blood pressure. These may be called beta blockers or calcium channel blockers. • medicines that affect your immune system. • certain medicines known as moderate to strong inhibitors of both CYP2C9 and CYP3A4, medicines such as fluconazole. If you are taking fluconazole, you should not take VELSIPITY. • Rifampin. If you are taking rifampin, you should not take VELSIPITY. You should not receive live vaccines at least 4 weeks before starting VELSIPITY, during treatment with VELSIPITY and for 5 weeks after you stop taking VELSIPITY. Talk to your healthcare provider before you receive a vaccine during treatment and for 5 weeks after treatment with VELSIPITY. If you receive a live vaccine, you may get the infection the vaccine was meant to prevent. Vaccines may not work as well when given during treatment with VELSIPITY. Ask your healthcare provider or pharmacist for a list of these medicines if you are not sure. Know the medicines you take. Keep a list of your medicines to show the list to your healthcare provider and pharmacist when you get a new medicine. How should I take VELSIPITY? • Take VELSIPITY exactly as your healthcare provider tells you to take it. • Take VELSIPITY 1 time each day. • Swallow VELSIPITY tablets whole. • Take VELSIPITY with or without food. What are the possible side effects of VELSIPITY? VELSIPITY can cause serious side effects, including: • See " What is the most important information I should know about VELSIPITY? " • Liver problems. VELSIPITY may cause liver problems. Your healthcare provider will do blood tests to check your liver before you start taking VELSIPITY. Call your healthcare provider right away if you have any of the following symptoms: • unexplained nausea • vomiting • stomach area (abdominal pain) • tiredness • loss of appetite • yellowing of the whites of your eyes or skin • dark colored urine If you develop any of these symptoms, your healthcare provider will do blood tests to check your liver and may stop your treatment with VELSIPITY. • Increased blood pressure. Your healthcare provider should check your blood pressure during treatment with VELSIPITY and treat you as needed. • A problem with your vision called macular edema. Your healthcare provider should test your vision around the time you start taking VELSIPITY or at any time you notice vision changes during your treatment with VELSIPITY. Call your healthcare provider right away if you have any of the following symptoms: • blurriness or shadows in the center of your vision • sensitivity to light • a blind spot in the center of your vision • unusually colored vision • Types of skin cancer. Certain types of skin cancer have happened with medicines in the same class as VELSIPITY. Limit the amount of time you spend in sunlight and ultraviolet (UV) light while taking VELSIPITY. Wear protective clothing and use a sunscreen with a high sun protection factor. Tell your healthcare provider if you have any changes in the appearance of your skin. • Swelling and narrowing of the blood vessels in your brain. A condition called Posterior Reversible Encephalopathy Syndrome (PRES) has happened with drugs in the same class. Symptoms of PRES usually get better when you discontinue treatment. If not treated, PRES may cause a stroke. Call your healthcare provider right away if you have any of the following symptoms: o sudden severe headache o sudden confusion o sudden loss of vision or other changes in your vision o seizure o If you develop any of these symptoms, your healthcare provider will stop treatment with VELSIPITY. • Breathing problems. Some people who take medicines in the same class as VELSIPITY may experience shortness of breath. Your healthcare provider may do tests to check your breathing during treatment with VELSIPITY. Call your healthcare provider right away if you have new or worsening breathing problems. The most common side effects of VELSIPITY include headache, elevated liver tests, and dizziness. Tell your healthcare provider if you have any side effect that bothers you or that does not go away. These are not all of the possible side effects of VELSIPITY. For more information, ask your healthcare provider or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects to Pfizer at 1-800-438-1985. How should I store VELSIPITY? • Store VELSIPITY at room temperature between 68°F to 77°F (20°C to 25°C). Keep VELSIPITY and all medicines out of the reach of children. General information about the safe and effective use of VELSIPITY. Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use VELSIPITY for a condition for which it was not prescribed. Do not give VELSIPITY to other people, even if they have the same symptoms you have. It may harm them. You can ask your pharmacist or healthcare provider for information about VELSIPITY that is written for health professionals. What are the ingredients in VELSIPITY? Active ingredient: etrasimod arginine. Inactive ingredients: Tablet core: magnesium stearate, mannitol, microcrystalline cellulose, and sodium starch glycolate. Tablet coating: FD&C blue #1/brilliant blue FCF aluminum lake, FD&C blue #2/indigo carmine aluminum lake, FD&C yellow #5/tartrazine aluminum lake, macrogol 4000 JP/PEG 3350, polyvinyl alcohol (partially hydrolyzed), talc, and titanium dioxide. LAB-1541-1.0 Pfizer logo

14 CLINICAL STUDIES The efficacy of VELSIPITY was evaluated in 2 randomized, double-blind, placebo-controlled clinical studies [UC-1 (NCT03945188) and UC-2 (NCT03996369)] in adult subjects with moderately to severely active ulcerative colitis who had an inadequate response, loss of response, or intolerance to one or more of the following treatment options: oral aminosalicylates, corticosteroids, thiopurines, Janus kinase (JAK) inhibitors, or biologic therapies (e.g., TNF blocker, anti-integrin, anti-IL12/23). UC-1 was a 52-week study and UC-2 was a 12-week study. In both studies, subjects were randomized to VELSIPITY or placebo and continued on treatment for the entire duration of the study. Disease severity was assessed based on the modified Mayo score (mMS), a 3-component Mayo score (0 to 9) which consists of the following subscores (0 to 3 for each subscore): stool frequency (SF), rectal bleeding (RB), and findings on centrally read endoscopy score (ES). An ES of 2 was defined by marked erythema, lack of vascular pattern, any friability, and/or erosions, and a score of 3 was defined by spontaneous bleeding and ulceration. Subjects in these studies may have received other concomitant UC therapies including stable daily doses of oral aminosalicylates and/or oral corticosteroids (≤20 mg/day prednisone, ≤9 mg/day budesonide, or equivalent steroid). Concomitant treatment with immunomodulators (e.g., thiopurines, methotrexate), biologic therapies, JAK inhibitors, rectal 5-ASA, or rectal corticosteroids was not permitted. Endpoints and Results Study UC-1 In UC-1, efficacy was evaluated in 408 adult subjects with a baseline mMS of 5 to 9 (median of 7), including a centrally read endoscopy subscore of 2 or 3. Subjects were randomized 2:1 to receive VELSIPITY 2 mg or placebo administered orally once daily. Subjects had a mean age of 41 years (range 18 to 78 years); 45% were female; and 89% identified as White, 7% as Asian, 2% as Black or African American, 1% as American Indian or Alaska Native, and 1% did not report their racial group. A total of 30% of subjects had prior exposure to biologic/JAK inhibitors and a total of 14% of subjects had exposure to >1 biologic/JAK inhibitor. At baseline, 68% of subjects were receiving oral aminosalicylates and 31% of subjects were receiving oral corticosteroids. The coprimary endpoints were the proportion of subjects achieving clinical remission at Week 12 and at Week 52. The secondary endpoints included the proportion of subjects achieving endoscopic improvement, histologic-endoscopic mucosal improvement, corticosteroid-free clinical remission, and maintenance of clinical remission (see Table 4). Table 4: Proportion of Subjects with Ulcerative Colitis Meeting Efficacy Endpoints in UC-1 at Week 12 and at Week 52 CI = confidence interval Endpoints Placebo VELSIPITY Treatment Difference Treatment difference (adjusted for stratification factors of prior biologic/JAK inhibitor exposure, corticosteroid use at baseline, and baseline mMS group). (95% CI) Coprimary Endpoints Clinical Remission Clinical remission is defined as SF subscore of 0 or 1, RB subscore of 0, and ES ≤1 (excluding friability). at Week 12 Total population N = 134 7% N = 274 27% 20% p <0.001. (13%, 27%) No prior biologic/ JAK inhibitor exposure N = 93 10% N = 194 31% Prior biologic/ JAK inhibitor exposure N = 41 2% N = 80 18% Clinical Remission at Week 52 Total population N = 134 7% N = 274 32% 26% (19%, 33%) No prior biologic/ JAK inhibitor exposure N = 93 8% N = 194 37% Prior biologic/ JAK inhibitor exposure N = 41 5% N = 80 21% Week 12 Endpoints Endoscopic Improvement Endoscopic improvement is defined as ES ≤1 (excluding friability). Total population N = 134 14% N = 274 35% 21% (13%, 29%) No prior biologic/ JAK inhibitor exposure N = 93 18% N = 194 39% Prior biologic/ JAK inhibitor exposure N = 41 5% N = 80 25% Histologic-Endoscopic Mucosal Improvement Histologic-endoscopic mucosal improvement is defined as ES ≤1 (excluding friability) with Geboes Index score <2.0, indicating no neutrophils in the epithelial crypts or lamina propria, no increase in eosinophils, and no crypt destruction, erosions, ulcerations, or granulation tissue. Total population N = 134 4% N = 274 21% 17% (11%, 23%) No prior biologic/ JAK inhibitor exposure N = 93 6% N = 194 24% Prior biologic/ JAK inhibitor exposure N = 41 0% N = 80 14% Week 52 Endpoints Endoscopic Improvement Total population N = 134 10% N = 274 37% 27% (19%, 34%) No prior biologic/ JAK inhibitor exposure N = 93 13% N = 194 40% Prior biologic/ JAK inhibitor exposure N = 41 5% N = 80 30% Histologic-Endoscopic Mucosal Improvement Total population N = 134 8% N = 274 27% 18% (11%, 25%) No prior biologic/ JAK inhibitor exposure N = 93 11% N = 194 28% Prior biologic/ JAK inhibitor exposure N = 41 2% N = 80 23% Corticosteroid-free Clinical Remission Corticosteroid-free clinical remission is defined as clinical remission at Week 52 without receiving corticosteroids for at least 12 weeks prior to Week 52. Total population N = 134 7% N = 274 32% 26% (19%, 33%) No prior biologic/ JAK inhibitor exposure N = 93 8% N = 194 37% Prior biologic/ JAK inhibitor exposure N = 41 5% N = 80 21% Maintenance of Clinical Remission Maintenance of clinical remission is defined as achievement of clinical remission at both Week 12 and Week 52. Total population N = 134 2% N = 274 18% 16% (11%, 21%) No prior biologic/ JAK inhibitor exposure N = 93 2% N = 194 22% Prior biologic/ JAK inhibitor exposure N = 41 2% N = 80 10% The relationship of histologic-endoscopic mucosal improvement at Week 12 or Week 52 to disease progression and longer-term outcomes after Week 52 was not evaluated in Study UC-1. Clinical Response A greater proportion of subjects treated with VELSIPITY compared to placebo achieved clinical response, defined as a ≥2 point and ≥30% decrease from baseline in mMS, and a ≥1 point decrease from baseline in RB subscore or an absolute RB subscore ≤1 at Week 12 (62% vs 34%). Stool Frequency and Rectal Bleeding Subscores Decreases in SF subscores were observed as early as Week 2 and decreases in RB subscores were observed as early as Week 4 in subjects treated with VELSIPITY compared to placebo. Endoscopic Assessment Normalization of the endoscopic appearance of the mucosa (endoscopic remission) was defined as ES of 0. A greater proportion of subjects treated with VELSIPITY compared to placebo achieved endoscopic remission by Week 12 (15% vs 4%), Week 52 (26% vs 6%), and both Week 12 and Week 52 (11% vs 1%). Endpoints and Results Study UC-2 In UC-2, efficacy was evaluated in 333 adult subjects with a baseline mMS of 5 to 9 (median of 7), including a centrally read endoscopy subscore of 2 or 3. Subjects were randomized 2:1 to receive VELSIPITY 2 mg or placebo administered orally once daily. Subjects had a mean age of 41 years (range 18 to 73 years); 41% were female; and 76% identified as White, 19% as Asian, 2% as American Indian or Alaska Native, 1% as Black or African American, and 2% as multiple racial groups or did not report their racial group. A total of 34% of subjects had prior exposure to biologic/JAK inhibitors and a total of 17% of subjects had exposure to >1 biologic/JAK inhibitor. At baseline, 66% of subjects were receiving oral aminosalicylates and 28% of subjects were receiving oral corticosteroids. The primary endpoint was the proportion of subjects achieving clinical remission at Week 12. The secondary endpoints included the proportion of subjects achieving endoscopic improvement and histologic-endoscopic mucosal improvement at Week 12 (see Table 5). Table 5: Proportion of Subjects with Ulcerative Colitis Meeting Efficacy Endpoints in UC-2 at Week 12 CI = confidence interval Endpoints Placebo VELSIPITY Treatment Difference Treatment difference (adjusted for stratification factors of prior biologic/JAK inhibitor exposure, corticosteroid use at baseline, and baseline mMS group). (95% CI) Clinical Remission Clinical remission is defined as SF subscore of 0 or 1, RB subscore of 0, and ES ≤1 (excluding friability). Total population N = 112 15% N = 221 26% 11% p <0.05. (3%, 20%) No prior biologic/ JAK inhibitor exposure N = 74 16% N = 147 30% Prior biologic/ JAK inhibitor exposure N = 38 13% N = 74 19% Endoscopic Improvement Endoscopic improvement is defined as ES ≤1 (excluding friability). Total population N = 112 19% N = 221 30% 12% (3%, 21%) No prior biologic/ JAK inhibitor exposure N = 74 19% N = 147 34% Prior biologic/ JAK inhibitor exposure N = 38 18% N = 74 23% Histologic-Endoscopic Mucosal Improvement Endoscopic-histologic mucosal improvement is defined as ES ≤1 (excluding friability) with Geboes Index score <2.0, indicating no neutrophils in the epithelial crypts or lamina propria, no increase in eosinophils, and no crypt destruction, erosions, ulcerations, or granulation tissue. Total population N = 112 9% N = 221 16% 8% (1%, 15%) No prior biologic/ JAK inhibitor exposure N = 74 11% N = 147 19% Prior biologic/ JAK inhibitor exposure N = 38 5% N = 74 11% The relationship of histologic-endoscopic mucosal improvement at Week 12 to disease progression and longer-term outcomes after Week 12 was not evaluated in Study UC-2. Clinical Response A greater proportion of subjects treated with VELSIPITY compared to placebo achieved clinical response, defined as a ≥2 point and ≥30% decrease from baseline in mMS, and a ≥1 point decrease from baseline in RB subscore or an absolute RB subscore ≤1 at Week 12 (62% vs 41%). Stool Frequency and Rectal Bleeding Subscores Decreases in SF subscores were observed as early as Week 2 and decreases in RB subscores were observed as early as Week 4 in subjects treated with VELSIPITY compared to placebo. Endoscopic Assessment Normalization of the endoscopic appearance of the mucosa (endoscopic remission) was defined as ES of 0. A greater proportion of subjects treated with VELSIPITY compared to placebo achieved endoscopic remission by Week 12 (17% vs 8%).

8.5 Geriatric Use Of the 577 VELSIPITY-treated subjects in the three clinical trials (UC-1, UC-2, and UC-3), 30 subjects (5%) were 65 years of age and older, while 3 subjects (<1%) were 75 years of age and older. Clinical studies of VELSIPITY did not include sufficient numbers of subjects aged 65 and older to determine whether they respond differently from younger adult subjects. The pharmacokinetics of etrasimod are similar in subjects 65 years of age and older compared to younger adult subjects [see Clinical Pharmacology (12.3) ].

8.4 Pediatric Use The safety and effectiveness of VELSIPITY in pediatric patients have not been established.

8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in females exposed to VELSIPITY during pregnancy. Pregnant females exposed to VELSIPITY and healthcare providers are encouraged to contact the pregnancy registry by calling 1-800-616-3791. Risk Summary Based on findings from animal studies, VELSIPITY may cause fetal harm when administered to a pregnant woman. Available data from reports of pregnancies from the clinical development program with VELSIPITY are insufficient to identify a drug-associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. There are risks to the mother and the fetus associated with increased disease activity in women with inflammatory bowel disease during pregnancy (see Clinical Considerations ). In animal reproduction studies, administration of etrasimod during organogenesis produced adverse effects on development, including embryolethality and fetal malformations, in both rats and rabbits at maternal exposures 5 and 6 times, respectively, the exposure at the maximum recommended human dose (MRHD). Administration of VELSIPITY to pregnant rats during organogenesis through lactation resulted in decreased pup growth and viability at maternal exposures 5 times the exposure at the MRHD, as well as impaired reproductive performance in first generation offspring, including decreased implantations and increased pre-implantation loss at maternal exposures 24 times the exposure at the MRHD (see Data ) . The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Published data suggest that the risk of adverse pregnancy outcomes in women with inflammatory bowel disease is associated with increased disease activity. Adverse pregnancy outcomes include preterm delivery (before 37 weeks of gestation), low birth weight (less than 2500 g) infants, and small for gestational age at birth. Data Animal Data In an embryo-fetal development study in pregnant rats, etrasimod was orally administered at 1, 2, or 4 mg/kg/day (5, 11, and 21 times the exposure at the MRHD of 2 mg, based on AUC comparison) during the period of organogenesis, from gestation day 6 to 17. No maternal toxicity was observed up to 21 times the exposure at the MRHD. Increased post-implantation loss with a corresponding decrease in the number of viable fetuses was observed at 4 mg/kg/day (21 times the exposure at the MRHD). Etrasimod-related fetal external and/or visceral malformations were noted at all dose levels (≥5 times the exposure at the MRHD). In an embryo-fetal development study in pregnant rabbits, etrasimod was orally administered at 2, 10, or 20 mg/kg/day (0.8, 6, and 11 times the exposure at the MRHD of 2 mg, based on AUC comparison) during the period of organogenesis, from gestation day 7 to 20. Increased post-implantation loss with a corresponding decrease in the number of viable fetuses was observed at 10 and 20 mg/kg/day (6 and 11 times the exposure at the MRHD). Etrasimod-related fetal malformations including aortic arch defects and fused sternebrae were noted at 10 and/or 20 mg/kg/day (6 and 11 times the exposure at the MRHD). There were no adverse effects on embryofetal development at 2 mg/kg/day (less than the exposure at the MRHD). In a pre- and post-natal development study in rats, etrasimod was orally administered at 0.4, 2, or 4 mg/kg/day (2, 10, and 24 times the exposure at the MRHD of 2 mg, based on AUC comparison) throughout pregnancy and lactation, from gestation day 6 through lactation day 20. Mortality during delivery and impaired maternal performance including increased post-implantation loss, increased number of females with stillborn pups, increased number of stillborn pups per litter, decreased viability index, and/or decreased lactation index was observed at 2 and 4 mg/kg/day (10 and 24 times the exposure at the MRHD). Etrasimod was detected in the plasma of F1 offspring, indicating exposure from the milk of the lactating dam. Decreased pup body weights were observed during the preweaning period at all dose levels (maternal exposures ≥2 times the exposure at the MRHD), and decreased pup viability was observed at 2 and 4 mg/kg/day (maternal exposures 10 and 24 times the exposure at the MRHD). Reduced fertility and reproductive performance including reduction in implantations and increased preimplantation loss in F1 offspring occurred at the highest dose tested (maternal exposures 24 times the exposure at the MRHD).

8 USE IN SPECIFIC POPULATIONS Severe Hepatic Impairment : Use is not recommended. ( 8.6 ) 8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in females exposed to VELSIPITY during pregnancy. Pregnant females exposed to VELSIPITY and healthcare providers are encouraged to contact the pregnancy registry by calling 1-800-616-3791. Risk Summary Based on findings from animal studies, VELSIPITY may cause fetal harm when administered to a pregnant woman. Available data from reports of pregnancies from the clinical development program with VELSIPITY are insufficient to identify a drug-associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. There are risks to the mother and the fetus associated with increased disease activity in women with inflammatory bowel disease during pregnancy (see Clinical Considerations ). In animal reproduction studies, administration of etrasimod during organogenesis produced adverse effects on development, including embryolethality and fetal malformations, in both rats and rabbits at maternal exposures 5 and 6 times, respectively, the exposure at the maximum recommended human dose (MRHD). Administration of VELSIPITY to pregnant rats during organogenesis through lactation resulted in decreased pup growth and viability at maternal exposures 5 times the exposure at the MRHD, as well as impaired reproductive performance in first generation offspring, including decreased implantations and increased pre-implantation loss at maternal exposures 24 times the exposure at the MRHD (see Data ) . The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal and/or Embryo/Fetal Risk Published data suggest that the risk of adverse pregnancy outcomes in women with inflammatory bowel disease is associated with increased disease activity. Adverse pregnancy outcomes include preterm delivery (before 37 weeks of gestation), low birth weight (less than 2500 g) infants, and small for gestational age at birth. Data Animal Data In an embryo-fetal development study in pregnant rats, etrasimod was orally administered at 1, 2, or 4 mg/kg/day (5, 11, and 21 times the exposure at the MRHD of 2 mg, based on AUC comparison) during the period of organogenesis, from gestation day 6 to 17. No maternal toxicity was observed up to 21 times the exposure at the MRHD. Increased post-implantation loss with a corresponding decrease in the number of viable fetuses was observed at 4 mg/kg/day (21 times the exposure at the MRHD). Etrasimod-related fetal external and/or visceral malformations were noted at all dose levels (≥5 times the exposure at the MRHD). In an embryo-fetal development study in pregnant rabbits, etrasimod was orally administered at 2, 10, or 20 mg/kg/day (0.8, 6, and 11 times the exposure at the MRHD of 2 mg, based on AUC comparison) during the period of organogenesis, from gestation day 7 to 20. Increased post-implantation loss with a corresponding decrease in the number of viable fetuses was observed at 10 and 20 mg/kg/day (6 and 11 times the exposure at the MRHD). Etrasimod-related fetal malformations including aortic arch defects and fused sternebrae were noted at 10 and/or 20 mg/kg/day (6 and 11 times the exposure at the MRHD). There were no adverse effects on embryofetal development at 2 mg/kg/day (less than the exposure at the MRHD). In a pre- and post-natal development study in rats, etrasimod was orally administered at 0.4, 2, or 4 mg/kg/day (2, 10, and 24 times the exposure at the MRHD of 2 mg, based on AUC comparison) throughout pregnancy and lactation, from gestation day 6 through lactation day 20. Mortality during delivery and impaired maternal performance including increased post-implantation loss, increased number of females with stillborn pups, increased number of stillborn pups per litter, decreased viability index, and/or decreased lactation index was observed at 2 and 4 mg/kg/day (10 and 24 times the exposure at the MRHD). Etrasimod was detected in the plasma of F1 offspring, indicating exposure from the milk of the lactating dam. Decreased pup body weights were observed during the preweaning period at all dose levels (maternal exposures ≥2 times the exposure at the MRHD), and decreased pup viability was observed at 2 and 4 mg/kg/day (maternal exposures 10 and 24 times the exposure at the MRHD). Reduced fertility and reproductive performance including reduction in implantations and increased preimplantation loss in F1 offspring occurred at the highest dose tested (maternal exposures 24 times the exposure at the MRHD). 8.2 Lactation Risk Summary There are no data on the presence of etrasimod in human milk, the effects on the breastfed infant, or the effects of the drug on milk production. When etrasimod was orally administered to female rats during pregnancy and lactation, etrasimod was detected in the plasma of the offspring, suggesting excretion of etrasimod in milk. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for VELSIPITY and any potential adverse effects on the breastfed infant from VELSIPITY or from the underlying maternal condition. 8.3 Females and Males of Reproductive Potential Based on animal data, VELSIPITY may cause fetal harm when administered to pregnant women [see Use in Specific Populations (8.1) ]. Contraception Females Before initiation of VELSIPITY treatment, females of reproductive potential should be counseled on the potential for a serious risk to the fetus and the need for effective contraception during treatment with VELSIPITY and for one week following the last dose [see Warnings and Precautions (5.6) and Use in Specific Populations (8.1) ]. 8.4 Pediatric Use The safety and effectiveness of VELSIPITY in pediatric patients have not been established. 8.5 Geriatric Use Of the 577 VELSIPITY-treated subjects in the three clinical trials (UC-1, UC-2, and UC-3), 30 subjects (5%) were 65 years of age and older, while 3 subjects (<1%) were 75 years of age and older. Clinical studies of VELSIPITY did not include sufficient numbers of subjects aged 65 and older to determine whether they respond differently from younger adult subjects. The pharmacokinetics of etrasimod are similar in subjects 65 years of age and older compared to younger adult subjects [see Clinical Pharmacology (12.3) ]. 8.6 Hepatic Impairment Etrasimod undergoes extensive hepatic metabolism . Exposure to etrasimod was similar in subjects with mild and moderate hepatic impairment (Child-Pugh A and B) compared to subjects with normal hepatic function; however, etrasimod exposure was increased in subjects with severe hepatic impairment (Child-Pugh C) compared to subjects with normal hepatic function [see Clinical Pharmacology (12.3) ] . Use of VELSIPITY in patients with severe hepatic impairment is not recommended. No dosage adjustment is needed in patients with mild to moderate hepatic impairment. 8.7 CYP2C9 Poor Metabolizers Increased exposure of etrasimod in patients who are CYP2C9 poor metabolizers is expected with concomitant use of moderate to strong inhibitors of CYP2C8 or CYP3A4. Concomitant use of VELSIPITY is not recommended in these patients [see Clinical Pharmacology (12.3 , 12.5) ] .

16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied VELSIPITY tablet is available as a round, green film-coated 2 mg etrasimod tablet, debossed with “ETR” on one side and “2” on the other side. VELSIPITY tablets are packed in a child-resistant 100 mL white, round, high-density polyethylene (HDPE) bottle containing 4 g of silica gel desiccant integrated directly into the 45 mm polypropylene (PP) cap. Dosage Form Strength Description NDC Number Tablets 2 mg of etrasimod 30 count bottle 0069-0274-30 Storage and Handling Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].