Multiple jejunal cancers resulting from combination of germline APC and MLH1 mutations

Authors

Noralane M. Lindor, Mayo Clinic , United States
Tom C. Smyrk, Mayo Clinic , United States
Sheila Buehler, Mayo Clinic , United States
Shanaka R. Gunawardena, Mayo Clinic , United States
Brittany C. Thomas, Mayo Clinic , United States
Paul Limburg, Mayo Clinic , United States
Salman Kirmani, Mayo Clinic , United StatesFollow
Stephen N. Thibodeau, Mayo Clinic , United States

Document Type

Article

Department

Paediatrics and Child Health

Abstract

Double heterozygotes for mutations in APC and a DNA mismatch repair gene are extremely rare. We report on an individual who had truncating mutations in APC and MLH1 whose clinical presentation initially resembled Familial Adenomatous Polyposis but then emerged as a novel phenotype with multiple jejunal carcinomas. We have reviewed the relevant literature on double heterozygotes and based on what has been reported to date, this phenotype was not anticipated. It may be useful for clinicians to be aware of this observation as clinical screening guidelines are proposed for such individuals.

Comments

This work was published before the author joined Aga Khan University.

Publication (Name of Journal)

Familial Cancer

Recommended Citation

Lindor, N. M., Smyrk, T. C., Buehler, S., Gunawardena, S. R., Thomas, B. C., Limburg, P., Kirmani, S., Thibodeau, S. N. (2012). Multiple jejunal cancers resulting from combination of germline APC and MLH1 mutations. Familial Cancer, 11(4), 667-669.
Available at: https://ecommons.aku.edu/pakistan_fhs_mc_women_childhealth_paediatr/1279