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Metastatic Colorectal Cancer in Young Adults: A Study From the South Australian Population-Based Registry.

Abstract：

BACKGROUND:Colorectal cancer (CRC) is a common malignancy. There is growing evidence that CRC incidence is increasing in the younger population. There is controversy surrounding the prognosis of young patients with CRC. In this study we reviewed Australian patients with metastatic CRC (mCRC) who were younger than 40 years of age at the time of diagnosis of metastatic disease. To our knowledge this is the first study to focus on this age group with mCRC. PATIENTS AND METHODS:This was a retrospective study using data from the South Australian Metastatic Colorectal Cancer database. We compared patient and disease characteristics, management approaches, and outcomes for age groups < 40 and ≥ 40. A multivariate Cox proportional hazards model was fitted to compare the survival outcomes (death from all causes) between the 2 groups. RESULTS:From 3318 patients, 46 (1.4%) were younger than 40 years of age. In a comparison of patients in the younger than 40-year-old group with the older group, a greater proportion had synchronous metastatic disease (80.4% vs. 64.4%, respectively; P = .04) and disease originating from the left colon (71.7% vs. 61.7%, respectively; P = .035); also a larger proportion in the younger than 40-year-old group received chemotherapy compared with the older group (82.6% vs. 58.7%, respectively; P < .01). In the adjusted multivariate model, survival was not significantly different between the 2 groups (hazard ratio, 0.81; 95% confidence interval, 0.56-1.16; log rank P = .25). CONCLUSION:Young-onset mCRC patients, when defined as aged younger than 40 years, have equivalent survival compared with their older counterparts. This is despite differences in disease characteristics and management approach between the 2 groups.

journal_name

Clin Colorectal Cancer

journal_title

Clinical colorectal cancer

authors

Vatandoust S,Price TJ,Ullah S,Roy AC,Beeke C,Young JP,Townsend A,Padbury R,Roder D,Karapetis CS

doi

10.1016/j.clcc.2015.07.005

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

32-6

issue

eissn

1533-0028

issn

1938-0674

pii

S1533-0028(15)00096-1

journal_volume

pub_type

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Metastatic Colorectal Cancer in Young Adults: A Study From the South Australian Population-Based Registry.