The randomized FIRE‐4.5 (AIO KRK0116) trial compared first‐line therapy with FOLFOXIRI (folinic acid, fluorouracil, oxaliplatin, and irinotecan) plus either cetuximab or bevacizumab in B‐Raf proto‐oncogene, serine/threonine kinase (BRAF) V600E‐mutant metastatic colorectal cancer (mCRC) patients. The gene discussed is MARK2; the disease is metastatic colorectal cancer.