%0 Case Reports %T Precision oncology strategy in cetuximab-resistant ERRFI1-mutant colon cancer: case report of disease progression on afatinib. %A Kuznetsova O %A Lebedeva A %A Kavun A %A Belova E %A Fedyanin M %A Mileyko V %A Ivanov M %A Nosov D %J Am J Transl Res %V 15 %N 9 %D 2023 %M 37854204 %F 3.94 %X Despite the existence of effective first and second line therapy options for patients with colorectal cancer, heavily treated patients have limited additional therapies. Genomic profiling is a promising tool for guiding subsequent treatment selection. Here, we describe the results of treating a colorectal cancer patient with molecularly-matched therapy based on the results of genomic profiling. The patient received a combination of afatinib and bevacizumab due to the presence of ERRFI1 variant. To our knowledge, this is the first report on the effect of EGFR inhibitors in patients with ERRFI1-altered RAS/BRAF wild-type colorectal adenocarcinoma.