Immuneering
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Immuneering (IMRX) investor relations material

Immuneering Study Result summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Study Result summary7 Jan, 2026

12-month overall survival and efficacy results

  • 12-month overall survival reached 64% for first-line pancreatic cancer patients treated with atebumetanib plus chemotherapy, nearly double the 35% benchmark from standard of care, with median overall survival not yet reached at a median follow-up of 13.4 months.

  • Median progression-free survival was 8.5 months versus 5.5 months for standard of care; overall response rate was 39% (vs. 23%), and disease control rate was 81% (vs. 48%).

  • Consistent survival benefit observed over time: 27-point separation at 6 months, 36-point at 9 months, and 29-point at 12 months compared to standard of care.

  • Expanded cohort of over 50 patients is showing survival trends consistent with the original 34-patient cohort, with updated data to be reported in the first half of 2026.

  • The study population was older (median age 69), with over two-thirds above 65, reinforcing the significance of the results.

Safety, tolerability, and quality of life

  • Atebumetanib plus chemotherapy demonstrated a favorable safety profile, with only anemia and neutropenia as Grade 3 adverse events in over 10% of patients; no new safety signals identified.

  • Grade 3 neutropenia and anemia each occurred in 18% of patients, lower or comparable to rates in pivotal studies of other regimens.

  • No Grade 5 events were reported in the study cohort.

  • Patients experienced meaningful improvements in quality of life, including weight gain, improved appetite, and increased independence, as highlighted in a case study.

  • Quality of life metrics will be included as secondary endpoints in the upcoming Phase 3 trial.

Next steps and future plans

  • A pivotal global Phase 3 trial (MapKeeper 301) will enroll approximately 510 patients, comparing atebumetanib plus chemotherapy to standard of care, with overall survival as the primary endpoint; first patient dosing expected mid-year and top-line results anticipated in mid-2028.

  • Additional data from the expanded cohort and circulating tumor DNA analyses will be reported in the first half of the year.

  • Phase 2 combination studies in non-small cell lung cancer are planned to start in 2026, including combinations with Libtayo.

  • The company is well-funded with a cash runway into 2029, supporting ongoing and future studies.

Phase III control arm median OS assumption?
Ideal atebemetinib patient population profile?
Impact of subsequent therapies on OS data?
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Frequently asked questions

Immuneering Corporation is a clinical-stage oncology company focused on developing novel therapeutics for cancer patients. The company leverages bioinformatics and computational biology to design drugs that cyclically disrupt core oncogenic signaling pathways, such as the MAPK pathway, with the aim of reducing tumor growth while minimizing toxicity. Immuneering’s pipeline includes its lead product candidate, IMM-1-104, a dual-MEK inhibitor in clinical trials targeting cancers caused by mutations in RAS and/or RAF. Another notable candidate is IMM-6-415, also targeting solid tumors. The company emphasizes a disease-agnostic approach, aiming to address cancers with high unmet medical needs through insights derived from its translational bioinformatics platform. The company is headquartered in Cambridge, Massachusetts, and its shares are listed on the NASDAQ.

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