Database of Biomarkers of response to monoclonal antibody therapy in breast and colorectal cancer. Developed by the Integrative Bioinformatics Group, it integrates data from existing repositories, and new data extracted and curated from the literature, providing a user-friendly web interface to facilitate the exploration of current knowledge of biomarkers of response in breast and colorectal cancer. ResMarkerDB contains more than 500 biomarker-drug-tumour associations and aims to enhance translational research efforts in identifying actionable biomarkers of drug response in cancer.