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Discrepancies between estimated and perceived risk of cancer among individuals with hereditary nonpolyposis colorectal cancer

In English

Författare

Summary, in English

Communicating cancer risk and recommending adequate control programs is central for genetic counseling. Individuals affected by hereditary nonpolyposis colorectal cancer (HNPCC) are at about 80% life-time risk of colorectal cancer and for female carriers 40-60% risk of endometrial cancer and 10-15% risk of ovarian cancer. The perceived risk among mutation carriers may, however, deviate from the risk communicated and has been demonstrated to influence adherence to control programs. We investigated the perceived cancer risk among HNPCC mutation carriers (n = 47) and correlated the findings to individual characteristics. A perceived risk of colorectal cancer above 60% was reported by 22/45 individuals, and only one out of five mutation carriers reported a perceived risk > 80%. Female mutation carriers, individuals below age 50, and individuals who received their oncogenetic counseling within 1 year prior to the study reported higher, albeit not significantly, perceived risks of colorectal cancer. Higher perceived risks were also reported by individuals who had lost a parent to HNPCC-related cancer at early age, whereas individuals with a personal history of cancer did not report a higher perceived risk. Regarding gynecological cancer, 6/18 females reported a perceived risk of 40-60% for endometrial cancer, whereas the remaining women both underestimated and overestimated their risk, and none of the women referred to the risk of ovarian cancer. We conclude that despite educational efforts and an increasing amount of data on the cancer risk in HNPCC, a minority of the mutation carriers report a perceived risk at the same level as that communicated during oncogenetic counseling.

Publiceringsår

2007

Språk

Engelska

Sidor

183-186

Publikation/Tidskrift/Serie

Genetic Testing

Volym

11

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Mary Ann Liebert, Inc.

Ämne

  • Cancer and Oncology
  • Medical Genetics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1557-7473