FDA grants accelerated approval for Scemblix (asciminib) for adult patients with newly diagnosed Philadelphia chromosome-positive chronic myeloid leukemia in chronic phase

The accelerated approval is based on major molecular response rate (MMR) at week 48 from the ASC4FIRST Phase III trial that compared once daily Scemblix to all other investigator-selected (IS) standard of care (SoC) tyrosine kinase inhibitors (TKIs) (imatinib, nilotinib, dasatinib, and bosutinib). In the study, Scemblix demonstrated superior MMR rates in both primary endpoints at week 48 vs. IS SoC TKIs and imatinib alone. Continued approval for the newly diagnosed indication may be contingent upon verification and description of clinical benefit from confirmatory evidence.

The expanded indication in Ph+ CML-CP increases the population eligible for Scemblix by approximately four times, including newly diagnosed and previously treated adults. Newly diagnosed patients will now have access to a treatment that has shown superior efficacy vs. all standard of care therapies and a favorable safety and tolerability profile.

“Many patients who are newly diagnosed with CML struggle to navigate this chronic condition and may switch or even stop treatment because of side effects that interrupt their daily lives,” said Lee Greenberger, Ph.D., Chief Scientific Officer at The Leukemia & Lymphoma Society. “That’s why approvals of new first-line treatment options are so important. For patients, finding a medicine that’s right for them at the very beginning of treatment may lead to better long-term disease control with fewer side effects.”