✦ LIBER ✦

Family history and survival after colorectal cancer diagnosis

✍ Scribed by Adam J. Bass; Jeffrey A. Meyerhardt; Jennifer A. Chan; Edward L. Giovannucci; Charles S. Fuchs

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 94 KB
Volume: 112
Category: Article
ISSN: 0008-543X
DOI: 10.1002/cncr.23294

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

BACKGROUND

A history of colorectal cancer in a first‐degree relative is a recognized risk factor for developing this malignancy. The influence of a family history of colorectal cancer on survival after a diagnosis of colorectal cancer was examined in a large cohort of women.

METHODS

We analyzed data from 1001 women diagnosed with colorectal cancer while participating in a prospective cohort study. Data on family history were obtained before cancer diagnosis. We computed Cox proportional hazards for cancer‐specific and overall mortality according to a family history of colorectal cancer, adjusting for other predictors for survival.

RESULTS

Before diagnosis, 16% of colorectal patients reported a history of colorectal cancer in a first‐degree relative. Patients with a history of colorectal cancer in 1 or more first‐degree relatives experienced an adjusted hazard ratio (HR) for overall mortality of 1.32 (95% confidence interval [CI], 1.01–1.72) and colorectal cancer‐specific mortality of 1.38 (95% CI, 1.02–1.86) when compared with those without a family history. Moreover, patients with 2 or more affected relatives had an HR for overall mortality of 2.07 (95% CI, 1.14–3.76) and cancer‐specific mortality of 2.19 (95% CI, 1.10–4.38). The significant deleterious effect of family history was limited to patients with advanced disease at presentation and cancers originating in the colon.

CONCLUSIONS

Among women with colorectal cancer, a history of colorectal cancer in a first‐degree relative was associated with a significant decrease in survival. Additional study is needed to validate these findings and determine whether specific germline polymorphisms correlate with clinical outcomes. Cancer 2008. © 2008 American Cancer Society.

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