IMRX News & Events

"We are excited that new survival data from 55 first-line pancreatic cancer patients treated with atebimetinib + mGnP in our Phase 2a clinical trial will be reported in an oral presentation at the ASCO Annual Meeting on June 1st," said Ben Zeskind, CEO of Immuneering. "We believe the upcoming presentation at ASCO is an excellent opportunity to build on the recent momentum in second-line pancreatic cancer and demonstrate atebimetinib's potential to provide a differentiated first-line option for patients. Our Phase 3 study of atebimetinib + mGnP in first-line pancreatic cancer patients, MAPKeeper 301, is now recruiting patients, and we remain on track to dose the first patient by mid-2026. Our Phase 2 lung cancer trial is on track to dose the first patient in the second half of the year. I believe we are entering a new era in cancer care where treatments have the potential to drive longer survival with fewer harsh side effects, and that atebimetinib will play an important role in that future."

Immuneering Corporation announced that updated data from the Phase 2a clinical trial evaluating atebimetinib, IMM-1-104, in combination with modified gemcitabine/nab-paclitaxel in first-line pancreatic cancer patients will be presented as an oral presentation at the 2026 American Society of Clinical Oncology, ASCO, Annual Meeting, taking place May 29 - June 2, 2026, in Chicago, IL. The oral presentation will highlight data from an expanded cohort totaling 55 first-line patients, which includes the initial cohort of 34 patients that the company previously reported plus an additional 21 patients. "We are excited to present new survival data from an expanded cohort of 55 first-line pancreatic cancer patients treated with atebimetinib in combination with mGnP in an oral presentation at ASCO," said Ben Zeskind, Ph.D., CEO of Immuneering. "Atebimetinib was designed with three distinct mechanisms to promote survival: shrinking tumors durably, preserving body mass, and maximizing tolerability."

Immuneering announced the presentation of new genetic data at the 2026 American Association for Cancer Research, AACR, Annual Meeting taking place April 17-22, 2026 in San Diego, CA. Key Findings from the AACR Presentation: Rare MAPK pathway reactivation: Across 86 patients treated with atebimetinib monotherapy and 37 patients treated in combination with chemotherapy, emergent and acquired mutations rarely converged on the RAS/MAPK pathway, in contrast to what is commonly observed with chronic RAS-targeted therapies. Diffuse, non-convergent resistance patterns: Emergent resistance following atebimetinib treatment utilized a variety of non-MAPK pathways, rather than converging on a single escape mechanism. Limited early adaptive resistance: ctDNA analysis showed minimal early molecular evolution during treatment, indicating that atebimetinib is not driving adaptive resistance and may impose less selective pressure than continuous pathway inhibition. Taken together, the data position atebimetinib as a differentiated MEK inhibitor with potential to drive deep and durable antitumor activity.