Lynch syndrome

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Lynch syndrome, also hereditary non-polyposis colorectal cancer syndrome (abbreviated HNPCC), is a constellation of clinical findings caused by a mutation in a mismatch repair gene, of which there are several.[1]

As the name suggests, HNPCC is a form of inherited colorectal cancer that is not characterized by abundant intestinal polyps (non-polyposis), as in adenomatous polyposis coli.

Clinical

Divided into:[1]

  • Lynch syndrome I - colon cancer associated.
  • Lynch syndrome II - non-colon cancer associated.

Associations

  • Colorectal carcinoma.
  • Non-endometrioid endometrial carcinoma.[2]
  • Stomach.[1]
  • Biliary tree.[1]

Genes

  • MSH2 gene.[1]
  • MLH1 gene.[3]
  • PMS2 gene.[4]
  • MSH6 gene.[5]
  • Others.

Special types

Muir-Torre syndrome

Muir-Torre syndrome is a subset of HNPCC that includes the presence of sebaceous adenomas.[6] It is caused by mutations in MSH2 or MLH1.[7]

See also

References

  1. Jump up to: 1.0 1.1 1.2 1.3 1.4 Online 'Mendelian Inheritance in Man' (OMIM) 120435
  2. Okuda T, Sekizawa A, Purwosunu Y, et al. (2010). "Genetics of endometrial cancers". Obstet Gynecol Int 2010: 984013. doi:10.1155/2010/984013. PMC 2852605. PMID 20396392. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2852605/.
  3. Online 'Mendelian Inheritance in Man' (OMIM) 120436
  4. Online 'Mendelian Inheritance in Man' (OMIM) 600259
  5. Online 'Mendelian Inheritance in Man' (OMIM) 600678
  6. Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson; Aster, Jon (2009). Robbins and Cotran pathologic basis of disease (8th ed.). Elsevier Saunders. pp. 1177. ISBN 978-1416031215.
  7. Online 'Mendelian Inheritance in Man' (OMIM) 158320