Novel MLH1 nonsense variant in a patient with suspected Lynch syndrome

Autor: Nobue Takaiso, Issei Imoto, Toshihiko Matsumoto, Akiyo Yoshimura
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Human Genome Variation, Vol 11, Iss 1, Pp 1-3 (2024)
Druh dokumentu: article
ISSN: 2054-345X
DOI: 10.1038/s41439-024-00294-9
Popis: Abstract Loss-of-function germline variants of MLH1 cause Lynch syndrome. Here, we present the case of a 43-year-old male patient diagnosed with cecal and transverse colon adenocarcinomas. The characteristics of the case met the revised Bethesda guidelines, and the tumors demonstrated a high frequency of microsatellite instability. Genetic testing for mismatch repair genes (indicative of Lynch syndrome) revealed a novel heterozygous germline pathogenic variant, NM_000249.4:c.856A>T/NP_000240.1:p.(Lys286Ter), in MLH1.
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