As shown in Table 1, the KRAS mutation in primary tumour was equal in frequency of occurrence among the subsets of patients with CRC and affected 5 of 19 patients (26.3%) with ovarian metastases, 35 of 96 patients (36.5%) with extra-ovarian metastases only and 66 of 181 patients (36.5%) without any recurrence or metastases. Here, KRAS is linked to colorectal carcinoma.