Immunohistochemical "null" pattern of all four mismatch repair proteins in Lynch syndrome-associated small bowel adenocarcinoma: a case report and comprehensive genomic profiling.
Kageyama S et al.
Virchows Archiv : an International Journal of Pathology, 2025
Immunohistochemical null-phenotype for mismatch repair proteins in colonic carcinoma associated with concurrent MLH1 hypermethylation and MSH2 somatic mutations.