29 May 2026 KRAS gene mutation status in colorectal cancer in the Republic of Kazakhstan: Results of the first multicentre retrospective study codon 12 mutation; targeted therapy; anti-EGFR; molecular oncology; gene polymorphism Kaldygul Smagulova, Saken Khaydarov*, Dilyara Kaidarova, Emil Makimbetov, Innara Turkpenovakhaidarov.s@kaznmu.kz https://doi.org/10.54890/1694-8882-2026-2-13