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. 2017 Nov 14;8(64):108020–108030. doi: 10.18632/oncotarget.22445

Table 2. Mechanisms of two-hit inactivation of MMR genes in LS tumors.

Germline mutation + LOH Germline mutation + somatic point mutation No obvious second hit ND
Colorectal adenoma (n = 11) 9 2 0 0
Colorectal carcinoma (n = 18) 9 6 2 1
Ovarian carcinoma (n = 16) 7 3 1 5

Mutations that had the possibility of being pathogenic (pathogenic, likely pathogenic, or pathogenicity unknown) were considered (please see Supplementary Table 1 for pathogenicity class for each mutation).

ND, not determined.