Journal
CANCER GENETICS
Volume 208, Issue 12, Pages 621-624Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cancergen.2015.10.001
Keywords
DNA helicase MCM9; primary ovarian failure; hereditary mixed polyposis; chromosomal instability; colorectal cancer
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Funding
- Israel Cancer Association [ILS20100104]
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Mutations in MCM9, which encodes DNA helicase, were recently shown to cause a clinical phenotype of primary ovarian failure and chromosomal instability. MCM9 plays an essential role in homologous recombination-mediated double-strand break repair. We describe a multiplex family with early colorectal carcinoma and mixed polyposis associated with primary hypergonadotropic hypogonadism. A combination of whole genome homozygosity mapping as well as exome sequencing and targeted gene sequencing identified a homozygous c.672_673deIGGinsC mutation that predicts a truncated protein, p.Glu225Lysfs(star)4. Our data expand the phenotypic spectrum of MCM9 mutations and suggest a link between MCM9 and inherited predisposition to mixed polyposis and early-onset colorectal cancer.
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