ERBB2 and colorectal carcinoma: In addition, studies by Li JL18, Styczen26, Drecoll32, Fotiades33, Farzand34, Kavanagh35, Li Q36, Ramieri37, Schuell38, Seo39, Gao40, and Stahler41 reported high HER2 expression in 54.5%, 63.6%, 14%, 33.3%, 54.8%, 10%, 15.5%, 10%, 4%, 6%, 50%, and 14.4% of primary tumors of CRC, respectively.