Merus Presents Positive Petosemtamab Data in Metastatic Colorectal Cancer.

Friday, Oct 24, 2025 10:05 am ET1min read

Merus announced interim clinical data from its ongoing phase 2 trial of petosemtamab in metastatic colorectal cancer (mCRC). The bispecific antibody showed a 100% response rate in first-line left-sided mCRC and a 62% response rate in second-line left- and right-sided mCRC. The data will be presented at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics.

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