KRAS and neoplasm: Factors found to be significantly associated with worse OS were age 15–39 years (p = 0.002), right-sided tumour (p < 0.001), poor differentiation (p < 0.001), signet ring cell feature (p < 0.001), KRAS mutation (p = 0.013), BRAF mutation (p < 0.001) and pMMR (p = 0.016).