On February 20, 2025 Verastem Oncology (Nasdaq: VSTM), a biopharmaceutical company committed to advancing new medicines for patients with RAS/MAPK pathway-driven cancers, reported multiple oral and poster presentations, including an oral presentation of additional analyses from the ongoing Phase 2 RAMP 201 (ENGOT-ov60/GOG-3052) trial evaluating the investigational combination of avutometinib plus defactinib in patients with recurrent low-grade serous ovarian cancer (LGSOC), at the Society of Gynecologic Oncology (SGO) 2025 Annual Meeting on Women’s Cancer, to be held on March 14-17 in Seattle, Washington (Press release, Verastem, FEB 20, 2025, View Source [SID1234650424]). Verastem will also have an exhibition booth (#622) at the meeting where it will be available to discuss its ongoing cancer research.
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"The presentation of the RAMP 201 primary analysis, which served as the basis of the acceptance of our NDA that is under Priority Review with the FDA, includes additional subgroup analysis by KRAS mutational status," said Dan Paterson, president, and chief executive officer of Verastem Oncology. "We look forward to sharing these learnings with many of the world’s leading gynecologic oncologists at SGO as part of our continued commitment to people living with recurrent low-grade serous ovarian cancer. We also recognize the importance of these findings to the broader cancer community as part of our growing pool of data reinforcing the potential to change expectations in managing RAS/MAPK pathway-driven cancers."
Oral Presentation:
Abstract Title: Avutometinib + Defactinib in Recurrent Low-Grade Serous Ovarian Cancer (ENGOT-ov60/GOG-3052/RAMP 201): Dose Intensity and Subgroup Analysis
Presenter: Rachel Grisham, M.D.
Session: Focused Forum XV: Ongoing IMPACT
Date/Time: Monday, March 17, 2025, 9:15 am PST
Oral Presentation – Investigator-Sponsored Trial:
Abstract Title: A Phase II Study of Avutometinib and Defactinib in Advanced or Recurrent Gynecologic Mesonephric Cancer: Interim Results
Presenter: Rachel Grisham, M.D.
Session: Focused Forum IV: Finding IMPACT: The Needle in the Haystack
Date and Time: Saturday, March 15, 2025, 4:15 pm PST
Preclinical Virtual Poster:
Abstract Title: Preclinical Efficacy of the Estrogen Receptor Degrader Fulvestrant in Combination with RAF/MEK clamp Avutometinib and FAK Inhibitor in Low-Grade Serous Ovarian Cancer with Acquired Resistance to Chemotherapy and Aromatase Inhibitor
Study Author: Cem Demirkiran, M.D.
About the Avutometinib and Defactinib Combination
Avutometinib is an oral RAF/MEK clamp that potently inhibits MEK1/2 kinase activities and induces inactive complexes of MEK with ARAF, BRAF, and CRAF, potentially creating a more complete and durable anti-tumor response through maximal RAS/MAPK pathway inhibition. In contrast to currently available MEK-only inhibitors, avutometinib blocks both MEK kinase activity and the ability of RAF to phosphorylate MEK. This unique mechanism allows avutometinib to block MEK signaling without the compensatory activation of MEK that appears to limit the efficacy of the MEK-only inhibitors.
Defactinib is an oral, selective inhibitor of focal adhesion kinase (FAK) and proline-rich tyrosine kinase-2 (Pyk2), the two members of the focal adhesion kinase family of non-receptor protein tyrosine kinases. FAK and Pyk2 integrate signals from integrin and growth factor receptors to regulate cell proliferation, survival, migration, and invasion. FAK activation has been shown to mediate resistance to multiple anti-cancer agents, including RAF and MEK inhibitors.
Verastem Oncology is currently conducting clinical trials with avutometinib with and without defactinib in RAS/MAPK-driven tumors as part of its Raf And Mek Program or RAMP. Verastem is currently enrolling patients and activating sites for RAMP 301 (GOG-3097/ENGOT-ov81/NCRI) (NCT06072781), an international Phase 3 confirmatory trial evaluating the combination of avutometinib and defactinib versus standard chemotherapy or hormonal therapy for the treatment of recurrent low-grade serous ovarian cancer (LGSOC).
Verastem was granted Priority Review and a Prescription Drug User Fee Act (PDUFA) date of June 30, 2025, for its New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA), for the investigational combination of avutometinib and defactinib in adults with recurrent KRAS mutant LGSOC who received at least one prior systemic therapy. Verastem initiated a rolling NDA in May 2024 to the FDA and completed its NDA submission in October 2024. The FDA granted Breakthrough Therapy Designation for the treatment of patients with recurrent LGSOC after one or more prior lines of therapy, including platinum-based chemotherapy, in May 2021. Avutometinib alone or in combination with defactinib was also granted Orphan Drug Designation by the FDA for the treatment of LGSOC.
Verastem Oncology has established a clinical collaboration with Amgen to evaluate LUMAKRAS (sotorasib) in combination with avutometinib and defactinib in both treatment-naïve patients and in patients whose KRAS G12C mutant non-small cell lung cancer progressed on a G12C inhibitor as part of the RAMP 203 trial (NCT05074810). Verastem has received Fast Track Designation from the FDA for the triplet combination in April 2024. RAMP 205 (NCT05669482), a Phase 1b/2 clinical trial evaluating avutometinib and defactinib with gemcitabine/nab-paclitaxel in patients with front-line metastatic pancreatic cancer, is supported by the PanCAN Therapeutic Accelerator Award. FDA granted Orphan Drug Designation to the avutometinib and defactinib combination for the treatment of pancreatic cancer.