Turalio

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Hepatotoxicity [see Warnings and Precautions (5.1) ]. Most common adverse reactions (>20%) were increased lactate dehydrogenase, increased aspartate aminotransferase, hair color changes, fatigue, increased alanine aminotransferase, decreased neutrophils, increased cholesterol, increased alkaline phosphatase, decreased lymphocytes, eye edema, decreased hemoglobin, rash, dysgeusia, and decreased phosphate. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Daiichi Sankyo, Inc. at 1-877-437-7763 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 practice. The safety of TURALIO 250 mg orally twice daily administered with a low-fat meal has been established based on adequate and well-controlled studies of TURALIO 400 mg orally twice daily administered on an empty stomach and additional pharmacokinetic data that indicate there is no clinically significant difference in the relative exposure between the two dosages [see Clinical Pharmacology (12.3) ]. The safety of TURALIO was evaluated in ENLIVEN [see Clinical Studies (14.1) ] . ENLIVEN excluded patients with ALT, AST, or total bilirubin >1.5 × ULN; and known active or chronic infection with hepatitis B or C virus, or human immunodeficiency virus. Patients received TURALIO without food at a dose of 400 mg in the morning and 600 mg in the evening orally for 2 weeks followed by 400 mg orally twice daily until disease progression or unacceptable toxicity . Seventy-nine percent of patients received TURALIO for 6 months or longer and 66% for greater than one year. The median age of TURALIO-treated patients was 44 years (range: 22-75), 57% were females, and 85% were White. Serious adverse reactions were reported in 13% of patients who received TURALIO. Most frequent (occurring in >1 patient) serious adverse reactions included abnormal liver tests (3.3%) and hepatotoxicity (3.3%). Permanent discontinuation due to an adverse reaction occurred in 13% of patients who received TURALIO. Most frequent adverse reactions (occurring in >1 patient) requiring permanent discontinuation included increased ALT (4.9%), increased AST (4.9%) and hepatotoxicity (3.3%). Dose reductions or interruptions occurred in 38% of patients who received TURALIO. Most frequent adverse reactions (occurring in >1 patient) requiring a dosage reduction or interruption were increased ALT (13%), increased AST (13%), nausea (8%), increased ALP (7%), vomiting (4.9%), increased bilirubin (3.3%), increased GGT (3.3%), dizziness (3.3%), and abdominal pain (3.3%). The most common (>20%) adverse reactions, including laboratory abnormalities, in patients who received TURALIO were: increased lactate dehydrogenase (LDH), increased AST, hair color changes, fatigue, increased ALT, decreased neutrophils, increased cholesterol, increased ALP, decreased lymphocytes, eye edema, decreased hemoglobin, rash, dysgeusia and decreased phosphate. Tables 4, 5 and 6 summarize the adverse reactions and laboratory abnormalities in ENLIVEN during the randomized phase (Week 25). Table 4: Adverse Reactions (≥10% All Grades or >2% Grade ≥ 3) in Patients Receiving TURALIO with a Difference Between Arms of >5% Compared to Placebo Through Week 25 in ENLIVEN TURALIO N=61 Placebo N=59 Adverse Reaction All Grades (%) Grade ≥ 3 (%) All Grades (%) Grade ≥ 3 (%) Skin and subcutaneous tissue Hair color changes 67 0 3.4 0 Rash Rash includes rash, maculo-papular rash, rash pruritic, urticaria, erythema, dermatitis acneiform, dermatitis allergic. 28 1.6 7 0 Pruritus Pruritis includes pruritus, pruritus generalized. 18 0 3.4 0 General Fatigue Fatigue includes fatigue, asthenia, malaise. 64 0 41 0 Peripheral edema Peripheral edema includes face edema, localized edema, edema peripheral, peripheral swelling. 20 0 7 0 Eye Eye edema Eye edema includes periorbital edema, eye edema, eyelid edema, papilledema. 30 1.6 5 0 Nervous system Dysgeusia Dysgeusia includes dysgeusia, ageusia. 26 0 1.7 0 Neuropathy Neuropathy includes neuropathy peripheral, paresthesia, hypoesthesia, burning sensation. 10 0 5 0 Gastrointestinal Vomiting 20 1.6 5 0 Constipation 12 0 5 0 Metabolism and nutrition Decreased appetite 16 0 10 0 Vascular Hypertension 15 4.9 10 0 Table 5: Hepatic Laboratory Abnormalities (≥10% All Grades or >2% Grade ≥ 3) Worsening from Baseline in Patients Receiving TURALIO with a Difference Between Arms of >5% Compared to Placebo Through Week 25 in ENLIVEN TURALIO Each test incidence is based on the number of patients who had both a baseline and at least one on-study measurement TURALIO (n=61) and placebo (n=59). Placebo Laboratory Abnormality Graded per NCI CTCAE v 4.03 Grade 1 (%) Grade 2 (%) Grade ≥ 3 (%) Grade 1 (%) Grade 2 (%) Grade ≥ 3 (%) ALT = alanine aminotransferase; AST = aspartate aminotransferase; ALP = alkaline phosphatase Liver Tests Increased AST 61 15 12 15 0 0 Increased ALT 31 13 20 22 0 0 Increased ALP 31 3.3 4.9 1.7 0 0 Increased bilirubin 3.3 3.3 3.3 0 0 0 Table 6: Other Laboratory Abnormalities Worsening from Baseline (≥10% All Grades or >2% of Grade ≥ 3) in Patients Receiving TURALIO with a Difference Between Arms of >5% Compared to Placebo Through Week 25 in ENLIVEN TURALIO Each test incidence is based on the number of patients who had both a baseline and at least one on-study measurement TURALIO (n = 61) and placebo (n = 58-59). Placebo Laboratory Abnormality Graded per NCI CTCAE v 4.03 except for LDH All Grades (%) Grade ≥3 (%) All Grades (%) Grade ≥3 (%) LDH=Lactate Dehydrogenase Chemistry Increased LDH LDH: Grade 1 >ULN to ≤2.5 × ULN; Grade 2 >2.5 to ≤5 × ULN; Grade 3 >5 to ≤20 × ULN; Grade 4 >20 × ULN 92 0 5 0 Increased cholesterol 44 4.9 25 0 Decreased phosphate 25 3.3 5 0 Hematology Decreased neutrophils 44 3.3 9 0 Decreased lymphocytes 38 1.6 3.4 0 Decreased hemoglobin 30 0 14 1.7 Decreased platelets 15 0 5 0 Clinically relevant adverse reactions occurring in <10% of patients were: Eye: blurred vision, photophobia, diplopia, reduced visual acuity Gastrointestinal: dry mouth, stomatitis, mouth ulceration General: pyrexia Hepatobiliary: cholangitis, hepatotoxicity, liver disorder Neurological: cognitive disorders (memory impairment, amnesia, confusional state, disturbance in attention, attention deficit/hyperactivity disorder) Skin and subcutaneous tissue: alopecia, skin pigment changes (hypopigmentation, depigmentation, discoloration, hyperpigmentation), photosensitivity reactions. 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of TURALIO. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Investigations: Blood creatine phosphokinase increased

4 CONTRAINDICATIONS None. None. ( 4 )

11 DESCRIPTION Pexidartinib is a kinase inhibitor. The chemical name of pexidartinib hydrochloride is 5-[(5-Chloro-1H-pyrrolo[2,3-b]pyridin-3-yl)methyl]-N-{[6-(trifluoromethyl)pyridin-3-yl]methyl}pyridin-2-amine monohydrochloride. Pexidartinib hydrochloride is an off-white to white solid. The molecular formula for pexidartinib hydrochloride is C 20 H 15 ClF 3 N 5 ∙HCl. The molecular weight is 454.28 for the hydrochloride salt and 417.81 for the free base. The chemical structure is: The solubility of pexidartinib hydrochloride in aqueous solutions decreases with increasing pH. The pKa1 and pKa2 were determined to be 2.6 and 5.4 respectively for the conjugate acids. Pexidartinib hydrochloride is soluble in methanol, slightly soluble in water and ethanol, and practically insoluble in heptane. TURALIO (pexidartinib) capsules are for oral use. Each capsule contains 125 mg pexidartinib which is equivalent to 135.9 mg pexidartinib hydrochloride. The capsule contains the following inactive ingredients: poloxamer 407, mannitol, crospovidone, and magnesium stearate. The hypromellose capsule shell contains hypromellose, titanium dioxide and FD&C Blue No. 1. Chemical Structure

2 DOSAGE AND ADMINISTRATION Recommended Dosage : 250 mg orally twice daily with a low-fat meal (approximately 11 to 14 grams of total fat). ( 2.1 ) See full prescribing information for dosage modifications due to adverse reactions, renal impairment and hepatic impairment. ( 2.2 , 2.5 , 2.6 ) 2.1 Recommended Dosage The recommended dosage of TURALIO is 250 mg taken orally twice daily with a low-fat meal (approximately 11 to 14 grams of total fat) until disease progression or unacceptable toxicity [see Clinical Pharmacology (12.3) ] . Taking TURALIO with a high-fat meal (approximately 55 to 65 grams of total fat) increases pexidartinib concentrations and may increase the risk of adverse reactions, including hepatotoxicity [see Warnings and Precautions (5.1 , 5.4) , Drug Interactions (7.2) , Clinical Pharmacology (12.2 , 12.3) ] . Swallow TURALIO capsules whole. Do not open, break, or chew the capsules. If a patient vomits or misses a dose of TURALIO, instruct the patient to take the next dose at its scheduled time. 2.2 Dosage Modifications for Adverse Reactions The recommended dose reductions for adverse reactions are provided in Table 1. Table 1: Recommended Dose Reductions for TURALIO for Adverse Reactions Dose Reduction Total Daily Dose Administration of Total Daily Dose with Low-Fat Meal First 375 mg 125 mg in the morning and 250 mg in the evening Second 250 mg 125 mg twice daily Permanently discontinue TURALIO in patients who are unable to tolerate 125 mg orally twice daily. The recommended dosage modifications for adverse reactions are summarized in Table 2. Table 2: Recommended Dosage Modifications for TURALIO for Adverse Reactions Adverse Reaction Severity TURALIO Dosage Modifications ALT = alanine aminotransferase; ALP = alkaline phosphatase; AST = aspartate aminotransferase; DB = direct bilirubin; GGT = gamma-glutamyl transferase; TB = total bilirubin; ULN = upper limit of normal Hepatotoxicity [see Warnings and Precautions (5.1) ] Increased ALT and/or AST Greater than 3 to 5 times ULN Withhold and monitor liver tests weekly . If AST and ALT are less than or equal to 3 times ULN within 4 weeks, resume at reduced dose. If AST or ALT is not less than or equal to 3 times ULN in 4 weeks, permanently discontinue TURALIO. Greater than 5 to 10 times ULN Withhold and monitor liver tests twice weekly . If AST and ALT are less than or equal to 3 times ULN within 4 weeks, resume at reduced dose. If AST or ALT is not less than or equal to 3 times ULN in 4 weeks, permanently discontinue TURALIO. Greater than 10 times ULN Permanently discontinue TURALIO. Monitor liver tests twice weekly until AST or ALT is less than or equal to 5 times ULN, then weekly until less than or equal to 3 times ULN. Increased ALP Confirm ALP elevations as liver isozyme fraction. and GGT ALP greater than 2 times ULN with GGT greater than 2 times ULN Permanently discontinue TURALIO. Monitor liver tests twice weekly until ALP is less than or equal to 5 times ULN, then weekly until less than or equal to 2 times ULN. Increased bilirubin TB greater than ULN to less than 2 times ULN or DB greater than ULN and less than 1.5 times ULN Withhold and monitor liver tests twice weekly . If an alternate cause for increased bilirubin is confirmed and bilirubin is less than ULN within 4 weeks, resume at reduced dose. If bilirubin is not less than ULN in 4 weeks, permanently discontinue TURALIO. TB greater or equal to 2 times ULN or DB greater than 1.5 times ULN Permanently discontinue TURALIO. Monitor liver tests twice weekly until bilirubin is less than or equal to ULN. Adverse Reactions or Other Laboratory Abnormalities [see Adverse Reactions (6.1) ] Any Severe or intolerable Withhold until improvement or resolution. Resume at a reduced dose upon improvement or resolution. 2.3 Concomitant Use of Moderate or Strong CYP3A Inhibitors or UGT Inhibitors Avoid concomitant use of TURALIO with moderate or strong CYP3A inhibitors or UGT inhibitors during treatment with TURALIO. If concomitant use with a moderate or strong CYP3A inhibitor or UGT inhibitor cannot be avoided, reduce the TURALIO dose according to the recommendations in Table 3. If concomitant use of a moderate or strong CYP3A inhibitor or UGT inhibitor is discontinued, increase the TURALIO dose (after 3 plasma half-lives of the moderate or strong CYP3A inhibitor or UGT inhibitor) to the dose that was used before starting the inhibitor [see Clinical Pharmacology (12.3) ] . Table 3: Recommended Dosage Reductions for TURALIO for Concomitant Use of Moderate or Strong CYP3A Inhibitors or UGT Inhibitors Total Daily Dose The Total Daily Dose represents the recommended dose (row one) and the recommended dose after modifications due to adverse reactions, renal impairment, or moderate hepatic impairment (rows two and three) [see Dosage and Administration (2.2 , 2.5 , 2.6) ]. Modified Total Daily Dose for Concomitant Use with Moderate or Strong CYP3A Inhibitors or UGT Inhibitors Dosing Schedule for Modified Total Daily Dose for Use with Moderate or Strong CYP3A Inhibitors or UGT Inhibitors Administer with Low-Fat Meal 500 mg 250 mg 125 mg twice daily 375 mg 250 mg 125 mg twice daily 250 mg 125 mg 125 mg once daily 2.4 Concomitant Use of Acid-Reducing Agents Avoid the concomitant use of proton pump inhibitors (PPI) while taking TURALIO. As an alternative to a PPI, administer TURALIO 2 hours before or 2 hours after taking a locally-acting antacid, or if using a histamine 2 (H 2 )-receptor antagonist, administer TURALIO at least 2 hours before or 10 hours after taking an H 2 -receptor antagonist [see Clinical Pharmacology (12.3) ] . 2.5 Dosage Modification for Renal Impairment The recommended dosage of TURALIO for patients with mild to severe renal impairment (creatinine clearance [CLcr] 15 to 89 mL/min estimated by Cockcroft-Gault using actual body weight) is 125 mg in the morning and 250 mg in the evening with a low-fat meal [see Clinical Pharmacology (12.3) ] . 2.6 Dosage Modification for Hepatic Impairment The recommended dosage of TURALIO for patients with moderate hepatic impairment (total bilirubin >1.5 to 3 × upper limit of normal (ULN), not due to Gilbert's syndrome, with any AST) is 125 mg twice daily with a low-fat meal [see Clinical Pharmacology (12.3) ] . TURALIO has not been studied in patients with severe hepatic impairment (total bilirubin >3 to 10 × ULN and any AST).

1 INDICATIONS AND USAGE TURALIO is indicated for the treatment of adult patients with symptomatic tenosynovial giant cell tumor (TGCT) associated with severe morbidity or functional limitations and not amenable to improvement with surgery. TURALIO is a kinase inhibitor indicated for the treatment of adult patients with symptomatic tenosynovial giant cell tumor (TGCT) associated with severe morbidity or functional limitations and not amenable to improvement with surgery. ( 1 )

10 OVERDOSAGE Due to the high plasma protein binding, TURALIO is not expected to be dialyzable [see Clinical Pharmacology (12.3) ] .

7 DRUG INTERACTIONS Use with Hepatotoxic Products : Avoid coadministration of TURALIO with other products known to cause hepatotoxicity. ( 7.1 ) Moderate or Strong CYP3A Inhibitors : Reduce the dose of TURALIO if concomitant use of moderate or strong CYP3A inhibitors cannot be avoided. ( 2.3 , 7.2 ) Strong CYP3A Inducers : Avoid concomitant use of strong CYP3A inducers. ( 7.2 ) UGT Inhibitors : Reduce the dose of TURALIO if concomitant use of UGT inhibitors cannot be avoided. ( 2.3 , 7.2 ) Acid-Reducing Agents : Avoid concomitant use of proton pump inhibitors. Use histamine-2 receptor antagonists or antacids if needed. ( 2.4 , 7.2 ) High-Fat Meal : Avoid taking TURALIO with a high-fat meal. ( 2.1 , 5.4 , 7.2 ). CYP3A Substrates : Avoid concomitant use with CYP3A substrates where minimal concentration changes may lead to serious therapeutic failure. ( 7.3 ) 7.1 Use with Hepatotoxic Products TURALIO can cause hepatotoxicity. In patients with increased serum transaminases, total bilirubin, or direct bilirubin (>ULN) or active liver or biliary tract disease, avoid coadministration of TURALIO with other products known to cause hepatotoxicity [see Warnings and Precautions (5.1) ] . 7.2 Effect of Other Drugs or Food on TURALIO Table 7: Effect of Other Drugs or Food on TURALIO Moderate or Strong CYP3A Inhibitors Clinical Impact Concomitant use of a moderate or strong CYP3A inhibitor may increase pexidartinib concentrations [see Clinical Pharmacology (12.3) ], which may increase the incidence and severity of adverse reactions of TURALIO. Management Reduce TURALIO dosage if concomitant use of moderate or strong CYP3A inhibitors, including grapefruit or grapefruit juice, cannot be avoided [see Dosage and Administration (2.3) ]. Strong CYP3A Inducers Clinical Impact Concomitant use of a strong CYP3A inducer decreases pexidartinib concentrations [see Clinical Pharmacology (12.3) ] , which may decrease the efficacy of TURALIO. Management Avoid concomitant use of strong CYP3A inducers, including St John's wort. UGT Inhibitors Clinical Impact Concomitant use of a UGT inhibitor increases pexidartinib concentrations [see Clinical Pharmacology (12.3) ], which may increase the incidence and severity of adverse reactions of TURALIO. Management Reduce TURALIO dosage if concomitant use of UGT inhibitors cannot be avoided [see Dosage and Administration (2.3) ]. Acid-Reducing Agents Clinical Impact Concomitant use of a PPI decreases pexidartinib concentrations [see Clinical Pharmacology (12.3) ], which may decrease the efficacy of TURALIO. Management Avoid concomitant use of PPIs with TURALIO. As an alternative to PPIs, use locally-acting antacids or H 2 -receptor antagonists [see Dosage and Administration (2.4) ] . High-Fat Meal Clinical Impact Taking TURALIO with a high-fat meal increased pexidartinib concentrations [see Clinical Pharmacology (12.3) ] , which may increase the incidence and severity of TURALIO adverse reactions, including hepatotoxicity [see Warnings and Precautions (5.1 , 5.4) ]. Management Take TURALIO with a low-fat meal (approximately 11 to 14 grams of total fat) . Avoid taking TURALIO with a high-fat meal (approximately 55 to 65 grams of total fat) [see Dosage and Administration (2.1) ] . 7.3 Effect of TURALIO on Other Drugs Table 8: Effect of TURALIO on Other Drugs CYP3A Substrates Clinical Impact TURALIO is a moderate CYP3A inducer. Concomitant use of TURALIO decreases the concentration of CYP3A substrates [see Clinical Pharmacology (12.3) ] , which may reduce the efficacy of these substrates . Management Avoid coadministration of TURALIO with hormonal contraceptives [see Warnings and Precautions (5.3) , Use in Specific Populations (8.3) ]. Avoid concomitant use of TURALIO with other CYP3A substrates, where minimal concentration changes may lead to serious therapeutic failures. If concomitant use is unavoidable, increase the CYP3A substrate dosage in accordance with approved product labeling.

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Pexidartinib is a small molecule tyrosine kinase inhibitor that targets colony stimulating factor 1 receptor (CSF1R), KIT proto-oncogene receptor tyrosine kinase (KIT), and FMS-like tyrosine kinase 3 (FLT3) harboring an internal tandem duplication (ITD) mutation. Overexpression of the CSF1R ligand promotes cell proliferation and accumulation in the synovium. In vitro, pexidartinib inhibited proliferation of cell lines dependent on CSF1R and ligand-induced autophosphorylation of CSF1R. Pexidartinib also inhibited the proliferation of a CSF1R dependent cell line in vivo. 12.2 Pharmacodynamics Exposure-Response Relationships There is an exposure response relationship between pexidartinib steady state exposure and serum transaminase levels (ALT and AST) with a higher risk of increased serum transaminases at higher exposure. Additionally, increased transaminases occurred more frequently with higher pexidartinib doses between 200 to 1200 mg per day administered on an empty stomach (0.25 to 1.5 times the exposure from the recommended dose). Cardiac Electrophysiology At two times the mean maximum exposure of the recommended dosage, TURALIO does not prolong the QTc interval to any clinically relevant extent. 12.3 Pharmacokinetics The pharmacokinetics of TURALIO was evaluated following single doses in healthy subjects and following multiple doses in patients as summarized in Table 9. Table 9: TURALIO Exposure and Pharmacokinetic Parameters General Information Steady state exposure [Mean (SD)] Pexidartinib 400 mg twice daily on an empty stomach (similar exposure to that of the recommended dosage) C max 8625 (2746) ng/mL AUC 0-12h 77465 (24975) ng∙h/mL Dose proportionality Pexidartinib exposure (C max and AUC 0-INF ) increased linearly over the single oral dose range of 200 to 2400 mg administered on an empty stomach (0.5 to 6 times the exposure from the recommended dose). Time to steady state Estimated based on half life Approximately 7 days Accumulation ratio (AUC) [Median] 3.6 Absorption T max [Median] 2.5 hours Effect of food TURALIO 400 mg with a high-fat meal The high-fat meal comprised 800 to 1000 calories with approximately 50% from fat (approximately 55 to 65 grams of total fat). Compared to an empty stomach: Increased pexidartinib C max and AUC 0-INF by 100% Delayed T max by 2.5 hours TURALIO 400 mg with a low-fat meal The low-fat meal comprised approximately 400 calories with 25% from fat (approximately 11 to 14 grams of total fat). Compared to an empty stomach: Increased pexidartinib C max by 56% and AUC 0-INF by 59% Delayed T max by 1.5 hours Predicted relative AUC 0-24h of TURALIO 250 mg with a low-fat meal to that of TURALIO 400 mg on an empty stomach No clinically significant difference Distribution In vitro plasma protein binding Greater than 99% Human serum albumin: 99.9% α-1 acid glycoprotein: 89.9% Apparent volume of distribution (Vz/F) [Mean (CV%)] After a single oral dose of pexidartinib 187 L (27%) Elimination Apparent clearance [Mean (CV%)] 5.1 L/h (36%) t 1/2 [Mean (SD)] 26.6 (6.5) hours Metabolism Primary pathway Oxidation: CYP3A4 Glucuronidation: UGT1A4 N -glucuronide metabolite Major inactive metabolite formed by UGT1A4 Approximately 10% higher exposure than pexidartinib after a single dose Excretion After a single oral dose of radiolabeled pexidartinib Feces: 65% (44% as unchanged) Urine: 27% as metabolites (≥10% as N -glucuronide) Specific Populations No clinically meaningful differences in the pharmacokinetics of pexidartinib were observed based on age (18 to 84 years), sex, race (White and Black), or mild hepatic impairment (total bilirubin ≤ ULN with AST > ULN or total bilirubin > 1 to 1.5 × ULN with any AST). Patients with Renal Impairment Mild (CLcr 60 to 89 mL/min), moderate (CLcr 30 to 59 mL/min) and severe (CLcr 15 to 29 mL/min) renal impairment increased pexidartinib exposure (AUC) by approximately 30%, relative to that in patients with normal renal function (CLcr ≥90 mL/min). Patients with Hepatic Impairment Moderate hepatic impairment (total bilirubin > 1.5 to 3 × ULN, not due to Gilbert's syndrome, with any AST) increased pexidartinib exposure (AUC) by 43% relative to exposure in patients with normal hepatic function (total bilirubin and AST ≤ ULN). The pharmacokinetics of pexidartinib have not been studied in patients with severe hepatic impairment (total bilirubin > 3 to 10 × ULN with any AST). Drug Interaction Studies Clinical Studies Effects of Other Drugs on Pexidartinib Strong or Moderate CYP3A Inducers: Coadministration of rifampicin (strong CYP3A inducer) decreased pexidartinib C max by 33% and AUC 0-INF by 65%. Coadministration of efavirenz (moderate CYP3A inducer) is predicted to have no clinically significant differences in pexidartinib pharmacokinetics. Strong or Moderate CYP3A Inhibitors: Coadministration of itraconazole (strong CYP3A inhibitor) increased pexidartinib C max by 48% and AUC 0-INF by 70%. Coadministration of fluconazole (moderate CYP3A inhibitor) is predicted to increase pexidartinib C max by 41% and AUC by 67% at steady state. UGT Inhibitors: Coadministration of probenecid (UGT inhibitor) increased pexidartinib AUC 0-INF by 60% with no effect on C max . Acid-Reducing Agents: Coadministration of esomeprazole (proton pump inhibitor) decreased pexidartinib C max by 55% and AUC 0-INF by 50%. The effects of H 2 -receptor antagonists and locally-acting antacids on pexidartinib pharmacokinetics have not been studied. Effects of Pexidartinib on Other Drugs CYP3A Substrates: Coadministration of TURALIO at the approved recommended dosage decreased midazolam (CYP3A substrate) C max by 28% and AUC 0-INF by 59%. Other Drugs: When coadministered with omeprazole (CYP2C19 substrate), tolbutamide (CYP2C9 substrate), digoxin (P-gp substrate), or CYP2C8 substrate with TURALIO, no clinically significant differences in their pharmacokinetics were observed or predicted. In Vitro Studies CYP/UGT Enzymes: Pexidartinib inhibited and induced CYP2B6 at clinically relevant concentrations . Pexidartinib inhibited UGT1A1 at clinically relevant concentrations. Transporters: Pexidartinib is not a substrate for P-gp, BCRP, OAT1, OAT3, OCT1, OCT2, OATP1B1, OATP1B3, OATP2B1, and BSEP. Pexidartinib is an inhibitor of MATE1, MATE2-K, OATP1B1, OATP1B3 and OATP2B1.

12.1 Mechanism of Action Pexidartinib is a small molecule tyrosine kinase inhibitor that targets colony stimulating factor 1 receptor (CSF1R), KIT proto-oncogene receptor tyrosine kinase (KIT), and FMS-like tyrosine kinase 3 (FLT3) harboring an internal tandem duplication (ITD) mutation. Overexpression of the CSF1R ligand promotes cell proliferation and accumulation in the synovium. In vitro, pexidartinib inhibited proliferation of cell lines dependent on CSF1R and ligand-induced autophosphorylation of CSF1R. Pexidartinib also inhibited the proliferation of a CSF1R dependent cell line in vivo.

12.2 Pharmacodynamics Exposure-Response Relationships There is an exposure response relationship between pexidartinib steady state exposure and serum transaminase levels (ALT and AST) with a higher risk of increased serum transaminases at higher exposure. Additionally, increased transaminases occurred more frequently with higher pexidartinib doses between 200 to 1200 mg per day administered on an empty stomach (0.25 to 1.5 times the exposure from the recommended dose). Cardiac Electrophysiology At two times the mean maximum exposure of the recommended dosage, TURALIO does not prolong the QTc interval to any clinically relevant extent.

12.3 Pharmacokinetics The pharmacokinetics of TURALIO was evaluated following single doses in healthy subjects and following multiple doses in patients as summarized in Table 9. Table 9: TURALIO Exposure and Pharmacokinetic Parameters General Information Steady state exposure [Mean (SD)] Pexidartinib 400 mg twice daily on an empty stomach (similar exposure to that of the recommended dosage) C max 8625 (2746) ng/mL AUC 0-12h 77465 (24975) ng∙h/mL Dose proportionality Pexidartinib exposure (C max and AUC 0-INF ) increased linearly over the single oral dose range of 200 to 2400 mg administered on an empty stomach (0.5 to 6 times the exposure from the recommended dose). Time to steady state Estimated based on half life Approximately 7 days Accumulation ratio (AUC) [Median] 3.6 Absorption T max [Median] 2.5 hours Effect of food TURALIO 400 mg with a high-fat meal The high-fat meal comprised 800 to 1000 calories with approximately 50% from fat (approximately 55 to 65 grams of total fat). Compared to an empty stomach: Increased pexidartinib C max and AUC 0-INF by 100% Delayed T max by 2.5 hours TURALIO 400 mg with a low-fat meal The low-fat meal comprised approximately 400 calories with 25% from fat (approximately 11 to 14 grams of total fat). Compared to an empty stomach: Increased pexidartinib C max by 56% and AUC 0-INF by 59% Delayed T max by 1.5 hours Predicted relative AUC 0-24h of TURALIO 250 mg with a low-fat meal to that of TURALIO 400 mg on an empty stomach No clinically significant difference Distribution In vitro plasma protein binding Greater than 99% Human serum albumin: 99.9% α-1 acid glycoprotein: 89.9% Apparent volume of distribution (Vz/F) [Mean (CV%)] After a single oral dose of pexidartinib 187 L (27%) Elimination Apparent clearance [Mean (CV%)] 5.1 L/h (36%) t 1/2 [Mean (SD)] 26.6 (6.5) hours Metabolism Primary pathway Oxidation: CYP3A4 Glucuronidation: UGT1A4 N -glucuronide metabolite Major inactive metabolite formed by UGT1A4 Approximately 10% higher exposure than pexidartinib after a single dose Excretion After a single oral dose of radiolabeled pexidartinib Feces: 65% (44% as unchanged) Urine: 27% as metabolites (≥10% as N -glucuronide) Specific Populations No clinically meaningful differences in the pharmacokinetics of pexidartinib were observed based on age (18 to 84 years), sex, race (White and Black), or mild hepatic impairment (total bilirubin ≤ ULN with AST > ULN or total bilirubin > 1 to 1.5 × ULN with any AST). Patients with Renal Impairment Mild (CLcr 60 to 89 mL/min), moderate (CLcr 30 to 59 mL/min) and severe (CLcr 15 to 29 mL/min) renal impairment increased pexidartinib exposure (AUC) by approximately 30%, relative to that in patients with normal renal function (CLcr ≥90 mL/min). Patients with Hepatic Impairment Moderate hepatic impairment (total bilirubin > 1.5 to 3 × ULN, not due to Gilbert's syndrome, with any AST) increased pexidartinib exposure (AUC) by 43% relative to exposure in patients with normal hepatic function (total bilirubin and AST ≤ ULN). The pharmacokinetics of pexidartinib have not been studied in patients with severe hepatic impairment (total bilirubin > 3 to 10 × ULN with any AST). Drug Interaction Studies Clinical Studies Effects of Other Drugs on Pexidartinib Strong or Moderate CYP3A Inducers: Coadministration of rifampicin (strong CYP3A inducer) decreased pexidartinib C max by 33% and AUC 0-INF by 65%. Coadministration of efavirenz (moderate CYP3A inducer) is predicted to have no clinically significant differences in pexidartinib pharmacokinetics. Strong or Moderate CYP3A Inhibitors: Coadministration of itraconazole (strong CYP3A inhibitor) increased pexidartinib C max by 48% and AUC 0-INF by 70%. Coadministration of fluconazole (moderate CYP3A inhibitor) is predicted to increase pexidartinib C max by 41% and AUC by 67% at steady state. UGT Inhibitors: Coadministration of probenecid (UGT inhibitor) increased pexidartinib AUC 0-INF by 60% with no effect on C max . Acid-Reducing Agents: Coadministration of esomeprazole (proton pump inhibitor) decreased pexidartinib C max by 55% and AUC 0-INF by 50%. The effects of H 2 -receptor antagonists and locally-acting antacids on pexidartinib pharmacokinetics have not been studied. Effects of Pexidartinib on Other Drugs CYP3A Substrates: Coadministration of TURALIO at the approved recommended dosage decreased midazolam (CYP3A substrate) C max by 28% and AUC 0-INF by 59%. Other Drugs: When coadministered with omeprazole (CYP2C19 substrate), tolbutamide (CYP2C9 substrate), digoxin (P-gp substrate), or CYP2C8 substrate with TURALIO, no clinically significant differences in their pharmacokinetics were observed or predicted. In Vitro Studies CYP/UGT Enzymes: Pexidartinib inhibited and induced CYP2B6 at clinically relevant concentrations . Pexidartinib inhibited UGT1A1 at clinically relevant concentrations. Transporters: Pexidartinib is not a substrate for P-gp, BCRP, OAT1, OAT3, OCT1, OCT2, OATP1B1, OATP1B3, OATP2B1, and BSEP. Pexidartinib is an inhibitor of MATE1, MATE2-K, OATP1B1, OATP1B3 and OATP2B1.

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3 DOSAGE FORMS AND STRENGTHS Capsules: 125 mg, size 1 with white opaque body and powder blue opaque cap with black print "DSC521" Capsules: 125 mg ( 3 )

Turalio pexidartinib hydrochloride PEXIDARTINIB HYDROCHLORIDE PEXIDARTINIB POLOXAMER 407 MANNITOL CROSPOVIDONE, UNSPECIFIED MAGNESIUM STEARATE HYPROMELLOSE, UNSPECIFIED TITANIUM DIOXIDE FERROSOFERRIC OXIDE FERRIC OXIDE YELLOW white opaque body powder blue opaque cap DSC521

13.2 Animal Toxicology and/or Pharmacology In repeat dose toxicity studies of up to 26 weeks in rats, there were findings of myxomatous change in the skin, tongue, and gastrointestinal tract, lymphoid depletion of the bone marrow and thymus, and chronic progressive nephropathy of the kidney at 20 mg/kg/day (approximately 0.6 times the human exposure at the recommended dose). Similar changes occurred in the rat carcinogenicity study along with alterations in the tunica intima of the aorta. Vascular inflammation consistent with polyarteritis nodosa occurred in male rats at 60 mg/kg/day (approximately 1.5 times the human exposure at the recommended dose). There were also dose-dependent findings of minimal to moderate subphyseal or cortical hyperostosis and physeal hypertrophy in the femur that correlated with decreased systemic phosphate levels at doses ≥ 60 mg/kg.

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenicity studies were performed in mice and rats. Both studies were negative for carcinogenic findings at exposures up to 9 times the human exposure at the recommended daily dose based on AUC. Pexidartinib was not mutagenic in an in vitro bacterial reverse mutation (AMES) assay or clastogenic in either an in vitro human peripheral blood lymphocyte chromosomal aberrations assay or in an in vivo mouse bone marrow micronucleus assay. Based on nonclinical findings, TURALIO may impair male and female fertility. In a fertility study in which pexidartinib was administered orally to male and female rats, there were reductions in pregnancy, as well as increases in pre- and post-implantation loss with a corresponding reduction in viable embryos at 40 mg/kg (approximately 1.3 times the human exposure at the recommended dose). Males at this dose level displayed reductions in spermatogenic parameters and adverse effects on sperm concentration, production, motility, and morphology. Lower testicular and epididymal weights occurred in this study at doses of ≥10 mg/kg/day (approximately 0.3 times the human exposure at the recommended dose). This is consistent with findings in chronic toxicology studies of germ cell depletion of the testes and hypospermia and cellular debris in the epididymis in male reproductive tissues of both rats and dogs at respective doses as low as 20 and 30 mg/kg/day (approximately 0.6 and 0.1 times the human exposure at the recommended dose). In rats, these changes persisted following a 16-week recovery period at the 60 mg/kg/day dose level (approximately 1.5 times the human exposure at the recommended dose). In female rats, necrosis of corpora lutea occurred at doses ≥0.5 mg/kg/day (approximately 0.01 times the human exposure at the recommended dose) with pigment deposition within the interstitium of the ovaries, an increased incidence of luteal cysts and incidence/severity of hemorrhage of corpora lutea, and a decreased incidence of retained antral follicles and decreased corpora lutea at 60 mg/kg (approximately 1.8 times the human exposure at the recommended dose). In female dogs there were decreased follicle numbers and moderate atrophy of the oviduct, uterus, and cervix at doses as low as 1 mg/kg (approximately 0.01 times the human exposure at the recommended dose).

13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility Carcinogenicity studies were performed in mice and rats. Both studies were negative for carcinogenic findings at exposures up to 9 times the human exposure at the recommended daily dose based on AUC. Pexidartinib was not mutagenic in an in vitro bacterial reverse mutation (AMES) assay or clastogenic in either an in vitro human peripheral blood lymphocyte chromosomal aberrations assay or in an in vivo mouse bone marrow micronucleus assay. Based on nonclinical findings, TURALIO may impair male and female fertility. In a fertility study in which pexidartinib was administered orally to male and female rats, there were reductions in pregnancy, as well as increases in pre- and post-implantation loss with a corresponding reduction in viable embryos at 40 mg/kg (approximately 1.3 times the human exposure at the recommended dose). Males at this dose level displayed reductions in spermatogenic parameters and adverse effects on sperm concentration, production, motility, and morphology. Lower testicular and epididymal weights occurred in this study at doses of ≥10 mg/kg/day (approximately 0.3 times the human exposure at the recommended dose). This is consistent with findings in chronic toxicology studies of germ cell depletion of the testes and hypospermia and cellular debris in the epididymis in male reproductive tissues of both rats and dogs at respective doses as low as 20 and 30 mg/kg/day (approximately 0.6 and 0.1 times the human exposure at the recommended dose). In rats, these changes persisted following a 16-week recovery period at the 60 mg/kg/day dose level (approximately 1.5 times the human exposure at the recommended dose). In female rats, necrosis of corpora lutea occurred at doses ≥0.5 mg/kg/day (approximately 0.01 times the human exposure at the recommended dose) with pigment deposition within the interstitium of the ovaries, an increased incidence of luteal cysts and incidence/severity of hemorrhage of corpora lutea, and a decreased incidence of retained antral follicles and decreased corpora lutea at 60 mg/kg (approximately 1.8 times the human exposure at the recommended dose). In female dogs there were decreased follicle numbers and moderate atrophy of the oviduct, uterus, and cervix at doses as low as 1 mg/kg (approximately 0.01 times the human exposure at the recommended dose). 13.2 Animal Toxicology and/or Pharmacology In repeat dose toxicity studies of up to 26 weeks in rats, there were findings of myxomatous change in the skin, tongue, and gastrointestinal tract, lymphoid depletion of the bone marrow and thymus, and chronic progressive nephropathy of the kidney at 20 mg/kg/day (approximately 0.6 times the human exposure at the recommended dose). Similar changes occurred in the rat carcinogenicity study along with alterations in the tunica intima of the aorta. Vascular inflammation consistent with polyarteritis nodosa occurred in male rats at 60 mg/kg/day (approximately 1.5 times the human exposure at the recommended dose). There were also dose-dependent findings of minimal to moderate subphyseal or cortical hyperostosis and physeal hypertrophy in the femur that correlated with decreased systemic phosphate levels at doses ≥ 60 mg/kg.

NDA211810

Turalio

pexidartinib hydrochloride

65597-407

HUMAN PRESCRIPTION DRUG

ORAL

PRINCIPAL DISPLAY PANEL - 125 mg Capsule Bottle Carton NDC 65597-407-20 Rx only Turalio ® (pexidartinib) capsules 125 mg 120 capsules Take with a low-fat meal. Pharmacist: Dispense the Medication Guide to each patient. Daiichi-Sankyo PRINCIPAL DISPLAY PANEL - 125 mg Capsule Bottle Carton

Manufactured for: Daiichi Sankyo, Inc. Basking Ridge, NJ 07920 TURALIO ® is a registered trademark of Daiichi Sankyo Company, Limited. ©2023, Daiichi Sankyo, Inc. USPI-TUR125-C7-1123-r101

17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Medication Guide). Hepatotoxicity Advise patients of the risk of hepatotoxicity that could be fatal and that they will need to undergo monitoring for liver injury and to report immediately any signs or symptoms of severe liver injury to their healthcare provider [see Warnings and Precautions (5.1) ] . TURALIO REMS Program TURALIO is available only through a restricted program called TURALIO REMS Program and patients are required to be part of the patient registry [see Warnings and Precautions (5.2) ] . TURALIO is available only from certified pharmacies participating in the program. Therefore, provide patients with the telephone number and website for information on how to obtain the product. Embryo-Fetal Toxicity Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential to inform their healthcare provider of a known or suspected pregnancy [see Warnings and Precautions (5.3) , Use in Specific Populations (8.1 , 8.3) ] . Advise females of reproductive potential to use effective non-hormonal contraception during treatment with TURALIO and for 1 month after the final dose [see Drug Interactions (7.3) , Use in Specific Populations (8.3) ] . Advise male patients with female partners of reproductive potential to use effective contraception during treatment and for 1 week after the final dose [see Use in Specific Populations (8.3) , Nonclinical Toxicology (13.1) ] . Lactation Advise females not to breastfeed during treatment with TURALIO and for 1 week after the final dose [see Use in Specific Populations (8.2) ]. Infertility Advise females and males of reproductive potential that TURALIO may impair fertility [see Use in Specific Populations (8.3) , Nonclinical Toxicology (13.1) ]. Administration Instruct patients to take TURALIO with a low-fat meal (approximately 11 to 14 grams of total fat) and to avoid taking TURALIO with a high-fat meal (approximately 55 to 65 grams of total fat). Consider referring patients to a dietician as deemed necessary [see Dosage and Administration (2.1) , Warnings and Precautions (5.4) , Drug Interactions (7.2) ] . Instruct patients to swallow capsules whole (do not open, break, or chew) [see Dosage and Administration (2.1) ]. Drug Interactions Advise patients to inform their healthcare providers of all concomitant products, including over-the-counter products and supplements [see Dosage and Administration (2) , Drug Interactions (7) ] . Photosensitivity Inform patients of the signs and symptoms of photosensitivity. Advise patients to avoid prolonged sun exposure and to use sunscreen and protective clothing during treatment with TURALIO [see Adverse Reactions (6.1) ].

This Medication Guide has been approved by the U.S. Food and Drug Administration. Revised: 11/2023 Medication Guide TURALIO ® (tur-a-lee-oh) (pexidartinib) capsules What is the most important information I should know about TURALIO? TURALIO can cause serious side effects, including: Serious liver problems which may be severe and can lead to death. Your healthcare provider will do blood tests to check for liver problems: before starting treatment with TURALIO, every week for the first 8 weeks during treatment, every 2 weeks for the next month, then, every 3 months after that. If you develop liver problems during treatment with TURALIO, your healthcare provider may do blood tests more often to monitor you. It is important to stay under the care of your healthcare provider during treatment with TURALIO. Stop taking TURALIO and call your healthcare provider right away if you develop: yellowing of your skin and whites of your eyes dark urine Tell your healthcare provider right away if you have any of these symptoms of liver problems during treatment with TURALIO: lack or loss of appetite right upper stomach-area (abdomen) pain or tenderness feeling overly tired nausea vomiting fever rash itching TURALIO Risk Evaluation and Mitigation Strategy (REMS): Because of the risk of serious liver problems, TURALIO is available only through a restricted program called the TURALIO REMS Program. Your healthcare provider must be enrolled in the program in order for you to be prescribed TURALIO. There is a registry that collects information about the effects of taking TURALIO over time. You must complete and sign an enrollment form for the TURALIO REMS Program and the registry. Ask your healthcare provider for more information. See " What are the possible side effects of TURALIO? " for more information about side effects. What is TURALIO? TURALIO is a prescription medicine used to treat certain adults who have tenosynovial giant cell tumor (TGCT) that is not likely to improve with surgery. TGCT is also known as giant cell tumor of the tendon sheath (GCT-TS) or pigmented villonodular synovitis (PVNS). It is not known if TURALIO is safe and effective in children. Before taking TURALIO, tell your healthcare provider about all of your medical conditions, including if you: have or had liver problems. have kidney problems. are pregnant or plan to become pregnant. TURALIO may harm your unborn baby. If you are a female who is able to become pregnant: Your healthcare provider will do a pregnancy test before you start treatment with TURALIO. Females who are able to become pregnant should use effective non-hormonal birth control (contraception) during treatment with TURALIO and for 1 month after your final dose of TURALIO. Birth control pills (oral contraceptives) and other hormonal forms of birth control may not be effective if used during treatment with TURALIO. Talk with your healthcare provider about birth control methods you can use during this time. Tell your healthcare provider right away if you become pregnant or think you are pregnant during treatment with TURALIO. If you are a male with a female partner who is able to become pregnant: Use effective birth control (contraception) during treatment and for 1 week after your final dose of TURALIO. Tell your healthcare provider right away if your female partner becomes pregnant or thinks she is pregnant during your treatment with TURALIO. are breastfeeding or plan to breastfeed. Do not breastfeed during treatment with TURALIO and for at least 1 week after your final dose of TURALIO. Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Certain medicines may affect the way TURALIO works and TURALIO may affect how other medicines work. Taking TURALIO with certain medicines may increase the amount of TURALIO in your blood. This may make it more likely for you to develop side effects and may cause more severe side effects. Avoid taking the following medicines or supplements during treatment with TURALIO because they can affect how TURALIO works: Proton Pump Inhibitor medicines (PPIs) St. John's wort How should I take TURALIO? Your healthcare provider will explain to you how you will receive your TURALIO. Take TURALIO exactly as your healthcare provider tells you to. TURALIO is usually taken 2 times a day. Your healthcare provider will tell you how much TURALIO to take and when to take it. Take TURALIO with a low-fat meal (about 11 to 14 grams of total fat). Taking TURALIO with a high-fat meal increases the amount of TURALIO in your blood. This may make it more likely for you to develop side effects and may cause more severe side effects, including serious liver problems. See " What are the possible side effects of TURALIO? " Talk with your healthcare provider about examples of foods that you can eat for a low-fat meal that contains about 11 to 14 grams of total fat. Your healthcare provider may refer you to a dietician, if needed. Swallow TURALIO capsules whole. Do not open, break, or chew TURALIO capsules. If you need to take an acid-reducing medicine, follow your healthcare provider's instructions for which medicine to take and when to take it. If you take an antacid medicine: Take TURALIO either 2 hours before or 2 hours after taking an antacid medicine. If you take an H 2 receptor blocker medicine: Take TURALIO at least 2 hours before or 10 hours after taking an H 2 receptor blocker medicine. Tell your healthcare provider about all the medicines you take. See the section " Before taking TURALIO, tell your healthcare provider about all of your medical conditions, including if you. " If you vomit after taking a dose, or if you miss a dose of TURALIO, take your next dose at your regular time. What should I avoid while taking TURALIO? Avoid grapefruit or drinking grapefruit juice during treatment with TURALIO. Grapefruit or grapefruit juice can cause you to have too much TURALIO in your blood and may lead to increased side effects and more severe side effects. Avoid spending prolonged time in sunlight. TURALIO can make your skin sensitive to the sun (photosensitivity), and you may burn more easily. You should use sunscreen and wear protective clothing that covers your skin to help protect against sunburn if you have to be in the sunlight during treatment with TURALIO. What are the possible side effects of TURALIO? TURALIO can cause serious side effects. See " What is the most important information I should know about TURALIO? " There are possible risks if TURALIO is taken with a high-fat meal. Avoid taking TURALIO with a high-fat meal (about 55 to 65 grams of total fat). Taking TURALIO with a high-fat meal increases the amount of medicine in your blood. This may make it more likely for you to develop side effects and may cause more severe side effects, including serious liver problems. Take TURALIO with a low-fat meal (about 11 to 14 grams of total fat). See " How should I take TURALIO? " The most common side effects of TURALIO include: changes in blood liver tests hair color changes tiredness increased cholesterol level in your blood decreased white blood cells and red blood cells swelling in or around your eyes rash, itching, hives, skin redness, and acne loss of taste or changes in the way things taste decreased phosphate in your blood TURALIO may affect fertility in females and males, which may affect your ability to have children. Talk to your healthcare provider if you have concerns about fertility. These are not all of the possible side effects of TURALIO. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. How should I store TURALIO? Store TURALIO at room temperature between 68°F to 77°F (20°C to 25°C). Keep the TURALIO container closed tightly. TURALIO comes with a drying agent (desiccant) in the container. Keep the desiccant in the container. Keep TURALIO and all medicines out of the reach of children. General information about the safe and effective use of TURALIO Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use TURALIO for a condition for which it was not prescribed. Do not give TURALIO to other people, even if they have the same symptoms that you have. It may harm them. You can ask your pharmacist or healthcare provider for information about TURALIO that is written for health professionals. What are the ingredients in TURALIO? Active Ingredient: pexidartinib Inactive Ingredients: poloxamer 407, mannitol, crospovidone, and magnesium stearate. Capsule shell: hypromellose, titanium dioxide, and FD&C Blue No. 1 Manufactured for: Daiichi Sankyo, Inc., Basking Ridge, NJ 07920 TURALIO ® is a registered trademark of Daiichi Sankyo Company, Limited. ©2023, Daiichi Sankyo, Inc. USMG-TUR125-C7-1123-r101 For more information, call 1-877-437-7763 or go to https://www.turalio.com.

14 CLINICAL STUDIES 14.1 Tenosynovial Giant Cell Tumor The efficacy of TURALIO 250 mg orally twice daily administered with a low-fat meal has been established based on adequate and well-controlled studies of TURALIO 400 mg orally twice daily administered on an empty stomach and additional pharmacokinetic data that indicate there is no clinically significant difference in the relative exposure between the two dosages . The efficacy of TURALIO was evaluated in ENLIVEN (NCT02371369), a double-blind, randomized (1:1), placebo-controlled, multicenter trial in patients with symptomatic TGCT [also referred to as giant cell tumor of the tendon sheath (GCT-TS) or pigmented villonodular synovitis (PVNS)] for whom surgical removal of the tumor would be associated with worsening functional limitation or severe morbidity. Eligible patients were required to have measurable disease per the Response Evaluation Criteria in Solid Tumors (RECIST) v1.1. Patients were randomized to placebo or TURALIO administered on an empty stomach: 400 mg in the morning and 600 mg in the evening for 2 weeks followed by 400 mg twice daily until unacceptable toxicity or disease progression. Randomization was stratified by geographic region (US vs. non-US countries) and disease location (upper extremity vs. lower extremity involvement). Patients who completed treatment in the double-blind, randomized part of the trial were eligible to advance to an open-label extension part in which all patients were given the option to receive pexidartinib. The major efficacy outcome measure was overall response rate (ORR) as assessed by blinded independent central review (BICR) at Week 25 using RECIST v1.1. Additional efficacy outcome measures were mean change from baseline in range of motion of the affected joint at Week 25 and ORR as assessed by BICR at Week 25 using tumor volume score (TVS). Range of motion was measured as a percent of normal reference range for the affected joint. Range of motion assessments were performed by a third-party clinical assessor using a goniometer. TVS was defined in ENLIVEN as the estimated volume of the maximally distended synovial cavity or tendon sheath involved, measured in 10% increments. Patients in the placebo arm were offered TURALIO at Week 25 beginning with a 400 mg twice daily dose, as permitted by the study protocol. A total of 120 patients were randomized, 61 to the TURALIO arm and 59 to the placebo arm. The median age was 44 years (range: 18-79); 59% were females; 88% were White; 53% had prior surgery; 88% were diagnosed with diffuse TGCT; and 9% had previously been treated with systemic therapy. Disease locations were knee (61%), ankle (18%), hip (11%), wrist (3%), foot (3%) and other (5%). ENLIVEN demonstrated a statistically significant improvement in ORR in patients randomized to TURALIO compared with placebo. Efficacy results are summarized in Table 10. Table 10: Efficacy Results Assessed at Week 25 for ENLIVEN Efficacy Parameter TURALIO N=61 Placebo N=59 CI: confidence interval; NA: not applicable; SD: standard deviation; LS: least squares; +: denotes ongoing at last assessment Overall Response Rate (ORR) Blinded independent central review , Data cut-off date January 31, 2018 ORR (95% CI) 38% (27%, 50%) 0 (0, 6%) Complete Response 15% 0 Partial Response 23% 0 P-value Fisher's exact test <0.0001 Duration of Response (DOR) Range (months) 6.9+, 24.9+ NA The analysis of mean change from baseline in range of motion at Week 25 demonstrated a statistically significant improvement in patients randomized to TURALIO compared to placebo. Figure 1 shows the change from baseline in range of motion for each patient at Week 25 (TURALIO N=45, placebo N=43). Results were excluded for 1 patient with missing baseline and 31 patients with a missing range of motion assessment at Week 25. Figure 1: Change from Baseline in Range of Motion at Week 25 for ENLIVEN ORR by TVS was 56% (95% CI: 43%, 67%) in patients randomized to the TURALIO arm and 0% in patients randomized to the placebo arm; p < 0.0001. At completion of the open-label extension part of the study in which all patients received TURALIO, the ORR using RECIST v1.1 was 61% (95% CI: 48%, 72%) in the 61 patients originally randomized to the TURALIO arm. The median duration of response was not reached (range: 4.6+, 63.4+ months) in the 37 responders. Figure 1

8.5 Geriatric Use Clinical studies of TURALIO did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects.

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

8.1 Pregnancy Risk Summary Based on findings from animal studies and its mechanism of action [see Clinical Pharmacology (12.1) ] , TURALIO may cause embryo-fetal harm when administered to a pregnant woman. The available human data do not establish the presence or absence of major birth defects or miscarriage related to the use of TURALIO. Oral administration of pexidartinib to pregnant animals during the period of organogenesis resulted in malformations, post-implantation loss, and abortion at maternal exposures that were approximately equal to the human exposure at the recommended dose (see Data ) . Advise pregnant women of the potential risk to a fetus. 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. Data Animal Data Embryo-fetal development studies investigating the administration of pexidartinib during the period of organogenesis were conducted in rats and rabbits. In rats, pexidartinib resulted in increased post-implantation loss and fetal malformations including localized fetal edema, absence of kidney and ureter, abnormalities of the reproductive tract, and developmental variations including misshapen kidney, decreased skeletal ossification and higher mean litter proportions of slightly or moderately malaligned sternebrae at doses of 40 mg/kg (approximately equal to the human exposure at the recommended dose). In rabbits, administration of pexidartinib resulted in increased post-implantation loss, abortion, and fetal malformations including absence of kidney or ureter, rudimentary, misshapen or malpositioned kidney, rib abnormalities, and skeletal variations of accessory skull bones at doses of 60 mg/kg (approximately equal to the human exposure at the recommended dose).

8 USE IN SPECIFIC POPULATIONS Lactation : Advise not to breastfeed. ( 8.2 ) Renal Impairment : Reduce the dosage for patients with mild to severe renal impairment. ( 2.5 , 8.6 ) Hepatic Impairment : Reduce the dosage for patients with moderate hepatic impairment. ( 2.6 , 8.7 ) 8.1 Pregnancy Risk Summary Based on findings from animal studies and its mechanism of action [see Clinical Pharmacology (12.1) ] , TURALIO may cause embryo-fetal harm when administered to a pregnant woman. The available human data do not establish the presence or absence of major birth defects or miscarriage related to the use of TURALIO. Oral administration of pexidartinib to pregnant animals during the period of organogenesis resulted in malformations, post-implantation loss, and abortion at maternal exposures that were approximately equal to the human exposure at the recommended dose (see Data ) . Advise pregnant women of the potential risk to a fetus. 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. Data Animal Data Embryo-fetal development studies investigating the administration of pexidartinib during the period of organogenesis were conducted in rats and rabbits. In rats, pexidartinib resulted in increased post-implantation loss and fetal malformations including localized fetal edema, absence of kidney and ureter, abnormalities of the reproductive tract, and developmental variations including misshapen kidney, decreased skeletal ossification and higher mean litter proportions of slightly or moderately malaligned sternebrae at doses of 40 mg/kg (approximately equal to the human exposure at the recommended dose). In rabbits, administration of pexidartinib resulted in increased post-implantation loss, abortion, and fetal malformations including absence of kidney or ureter, rudimentary, misshapen or malpositioned kidney, rib abnormalities, and skeletal variations of accessory skull bones at doses of 60 mg/kg (approximately equal to the human exposure at the recommended dose). 8.2 Lactation Risk Summary There are no data on the presence of pexidartinib or its metabolites in either human or animal milk or its effects on a breastfed child or on milk production. Because of the potential for serious adverse reactions in the breastfed child, advise women not to breastfeed during treatment with TURALIO and for at least 1 week after the final dose. 8.3 Females and Males of Reproductive Potential TURALIO may cause fetal harm when administered to a pregnant woman [see Use in Specific Populations (8.1) ] . Pregnancy Testing Verify pregnancy status in females of reproductive potential prior to the initiation of TURALIO [see Use in Specific Populations (8.1) ] . Contraception Females Advise females of reproductive potential to use effective non-hormonal contraception during treatment with TURALIO and for 1 month after the final dose. Counsel patients to use non-hormonal method(s) of contraception, since TURALIO can render hormonal contraceptives ineffective [see Drug Interactions (7.3) , Nonclinical Toxicology (13.1) ] . Males Advise male patients with female partners of reproductive potential to use effective contraception during treatment with TURALIO and for 1 week after the final dose [see Nonclinical Toxicology (13.1) ] . Infertility Based on findings from animal studies, TURALIO may impair both male and female fertility [see Nonclinical Toxicology (13.1) ]. 8.4 Pediatric Use The safety and effectiveness of TURALIO in pediatric patients have not been established. 8.5 Geriatric Use Clinical studies of TURALIO did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. 8.6 Renal Impairment Reduce the dosage when administering TURALIO to patients with mild to severe renal impairment (CLcr 15 to 89 mL/min, estimated by Cockcroft-Gault [C-G]) [see Dosage and Administration (2.5) , Clinical Pharmacology (12.3) ] . 8.7 Hepatic Impairment No dosage adjustment is recommended for patients with mild hepatic impairment (total bilirubin ≤ upper limit of normal [ULN] with AST > ULN or total bilirubin >1 to 1.5 × ULN with any AST) [see Clinical Pharmacology (12.3) ] . Reduce the dosage of TURALIO for patients with moderate hepatic impairment (total bilirubin >1.5 to 3 × ULN, not due to Gilbert's syndrome, with any AST) [see Dosage and Administration (2.6) , Clinical Pharmacology (12.3) ] . TURALIO has not been studied in patients with severe hepatic impairment (total bilirubin >3 to 10 × ULN and any AST).

16 HOW SUPPLIED/STORAGE AND HANDLING TURALIO 125 mg capsules are supplied as size 1 with white opaque body and powder blue opaque cap with black print "DSC521", available in: 28 count bottle 120 count bottle NDC#: 65597-407-28 NDC#: 65597-407-20 Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. Keep containers closed and do not remove desiccant from bottles.

Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. Keep containers closed and do not remove desiccant from bottles.

WARNING: HEPATOTOXICITY TURALIO can cause serious and potentially fatal liver injury [see Warnings and Precautions (5.1) ] . Monitor liver tests prior to initiation of TURALIO and at specified intervals during treatment. Withhold and dose reduce or permanently discontinue TURALIO based on severity of hepatotoxicity [see Dosage and Administration (2.2) , Warnings and Precautions (5.1) ] . TURALIO is available only through a restricted program called the TURALIO Risk Evaluation and Mitigation Strategy (REMS) Program [see Warnings and Precautions (5.2) ] . WARNING: HEPATOTOXICITY See full prescribing information for complete boxed warning. TURALIO can cause serious and potentially fatal liver injury. ( 5.1 ) Monitor liver tests prior to initiation of TURALIO and at specified intervals during treatment. Withhold and dose reduce or permanently discontinue TURALIO based on severity of hepatotoxicity. ( 2.2 , 5.1 ) TURALIO is available only through a restricted program called the TURALIO Risk Evaluation and Mitigation Strategy (REMS) Program. ( 5.2 )