All fourteen rectal cancer patients in a small phase II study of dostarlimab, an anti-PD-1 monoclonal antibody, saw their cancer completely disappear—with no progression or recurrence at follow-up six to 25 months later. None of the patients required further chemotherapy, radiation, or surgery.
Longer follow-up results from the investigational phase Ib/II OrigAMI-1 study evaluating amivantamab-vmjw, a bispecific antibody targeting epidermal growth factor receptor and MET, in combination with FOLFOX or FOLFIRI chemotherapy in patients with RAS/BRAF wild-type metastatic colorectal cancer were presented during a poster session at the 2026 American Society of Clinical Oncology Gastrointestinal Cancers Symposium.
