Verastem Oncology Announces the Initiation of a Rolling Submission of NDA to FDA Seeking Accelerated Approval of Avutometinib and Defactinib Combination for the Treatment of Adult Patients with Recurrent KRAS Mutant Low-Grade Serous Ovarian Cancer

Verastem Oncology (Nasdaq: VSTM), a biopharmaceutical company committed to advancing new medicines for patients with cancer, today announced that it has initiated the rolling submission of a New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA) seeking accelerated approval of the combination of avutometinib, a RAF/MEK clamp, and defactinib, a selective FAK inhibitor, for adult patients with recurrent KRAS mutant (KRAS mt) low-grade serous ovarian cancer (LGSOC), who received at least one prior systemic therapy. The rolling review process allows the Company to submit completed sections of an application for review by the FDA before all sections become available. The initial sections of the application will include the nonclinical and quality sections. In discussions with the FDA, Verastem reached agreement to submit a primary efficacy analysis based on the RAMP 201 study with 12 months of follow up. Based on discussions with the FDA, we understand that the proposed indication for final submission of the clinical module can be expanded in the event Verastem provides data that demonstrates a substantial improvement over available therapy in the KRAS wild-type (KRAS wt) population. FDA has accepted Verastem’s plan to submit the clinical module in the second half of 2024 to complete the NDA application. Previously, the FDA granted Breakthrough Therapy Designation (BTD) for the combination for treatment of patients with recurrent LGSOC, regardless of KRAS status, following one or more previous lines of therapy and Orphan Drug Designation (ODD) for the combination in certain LGSOC indications. The Company plans to request a priority review of the NDA. Currently, there are no FDA-approved treatments specifically for recurrent LGSOC.

"The initiation of our rolling NDA submission of the avutometinib and defactinib combination for accelerated approval, is an important step towards addressing the significant unmet needs that patients face living with KRAS mutant low-grade serous ovarian cancer,"​ said Dan Paterson, president and chief executive officer of Verastem Oncology. "The data from our ongoing RAMP 201 trial continues to support our belief that the avutometinib and defactinib combination has the potential to be a new standard of care in patients with recurrent low-grade serous ovarian cancer, if approved. In the second half of this year, we anticipate completing our NDA submission with the mature data from the RAMP 201 trial and discussing with the FDA a path forward for patients with KRAS wild-type disease. We also expect to present the mature dataset at a medical meeting in the second half of 2024."​