Daiichi Sankyo, Inc. issued the following announcement on Aug. 2.
Daiichi Sankyo Company, Limited (hereafter, Daiichi Sankyo) today announced that the U.S. Food and Drug Administration (FDA) approved TURALIO™ (pexidartinib) as the first and only treatment for adult patients with symptomatic TGCT associated with severe morbidity or functional limitations and not amenable to improvement with surgery. TGCT is a rare, non-malignant tumor that affects small and large joints. The disease can cause debilitating symptoms and can be locally aggressive.1,2,3
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“The FDA approval of TURALIO represents a paradigm shift in the treatment of carefully selected TGCT patients who face significant disease morbidity and for whom surgery is not an option,” said William D. Tap, MD, Chief of the Sarcoma Medical Oncology Service at Memorial Sloan Kettering Cancer Center, New York, and lead investigator for the pivotal phase 3 ENLIVEN study. “We now have a new oral treatment option that can have a meaningful clinical benefit in select patients, including a reduction in tumor size.”
“We are proud to be a part of today’s landmark approval and offer a much-needed treatment advancement for TGCT patients whose disease is not amenable to improvement with surgery, and who, until now, have had no approved systemic treatment options,” said Antoine Yver, MD, MSc, Executive Vice President and Global Head, Oncology Research and Development, Daiichi Sankyo, Inc. “With patients at the center of everything we do, Daiichi Sankyo believes patient safety and providing effective medicines are our most important responsibilities. As such, we are committed to educating patients and the healthcare providers who care for them about the benefits and risks associated with TURALIO to ensure appropriate prescribing and monitoring.”
The FDA approval of TURALIO is based on the results of the pivotal phase 3 ENLIVEN study, the first placebo-controlled study of a systemic therapy in patients with TGCT. Study results showed the primary endpoint of tumor response rate by Response Evaluation Criteria v1.1 in Solid Tumors (RECIST) was 38 percent (95% CI: 27%, 50%) in TURALIO-treated patients and zero percent (95% CI: 0%, 6%) for placebo-treated patients at Week 25 (TURALIO N=61, placebo N=59; p<0.0001). In addition, overall response rate by tumor volume score (TVS) was 56 percent (95% CI: 43%, 67%) in patients randomized to the TURALIO arm and zero percent in patients randomized to the placebo arm at Week 25 (TURALIO N=61, placebo N=59; p<0.0001). Furthermore, the analysis of mean change from baseline in range of motion at Week 25 (TURALIO N=45, placebo N=43) demonstrated a statistically significant improvement in patients treated with TURALIO, compared to placebo.
TURALIO is approved with a Boxed Warning for hepatotoxicity due to the risk of serious and potentially fatal liver injury. Hepatotoxicity with ductopenia and cholestasis has occurred in patients treated with TURALIO. Across 768 patients who received TURALIO in clinical trials, there were two irreversible cases of cholestatic liver injury. One patient died with advanced cancer and ongoing liver toxicity and one patient required a liver transplant. The mechanism of cholestatic hepatotoxicity is unknown and its occurrence cannot be predicted. It is unknown whether liver injury occurs in the absence of increased transaminases.
Because of the risk of hepatotoxicity, TURALIO will be available only through a restricted program called the TURALIO Risk Evaluation and Mitigation Strategy (REMS) Program. Under this program, only certified healthcare providers may prescribe TURALIO. Biologics by McKesson, an independent specialty pharmacy for oncology and other complex therapeutic areas, has been selected to be the exclusive specialty pharmacy provider for TURALIO.
TURALIO is available by prescription in the U.S. Daiichi Sankyo is committed to ensuring that patients in the U.S. who are prescribed TURALIO can access the medication and receive necessary financial support. Provider and patient support related to access, reimbursement and distribution for TURALIO in the U.S. will be accessible through Daiichi Sankyo Access Central by visiting www.DSIAccessCentral.com or calling 1-866-4-DSI-NOW (1-866-437-4669).
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