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Ann Oncol. 2010 Jan;21(1):152-60. doi: 10.1093/annonc/mdp290. Epub 2009 Jul 21.

Race and ethnicity correlate with survival in patients with gastric adenocarcinoma.

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  • 1City of Hope Comprehensive Cancer Center, City of Hope National Medical Center, Duarte, CA, USA. jokim@coh.org

Abstract

BACKGROUND:

Asian centers have consistently reported superior gastric cancer outcomes. Our study examines gastric cancer survival among different races and ethnicities in a large, heterogeneous USA population.

PATIENTS AND METHODS:

Patients with gastric adenocarcinoma treated in Los Angeles County from 1988 to 2006 were identified from the Los Angeles County Cancer Surveillance Program. Patients were categorized by race and ethnicity as White, Asian, Hispanic and Black.

RESULTS:

Of 13 084 patients, 39% were White, 22% Asian, 28% Hispanic, 11% Black and 2% other. Asian patients demonstrated higher survival than Whites, Hispanics and Blacks [median survival (MS) 16.3 versus 8.4, 8.7 and 7.9 months, respectively; log-rank P values < 0.001]. Multivariate Cox regression analysis showed that Asians had improved probability of survival [hazard ratio (HR) 0.76, 95% confidence interval (CI) 0.72-0.82; P < 0.001]. In patients who underwent curative-intent surgery, Asian patients demonstrated higher survival than Whites, Hispanics and Blacks (MS 32.7 versus 18.8, 19.9 and 18.9 months, respectively; log-rank P values < 0.001). Multivariate Cox regression analysis showed that Asians had improved probability of survival after surgery (HR 0.79, 95% CI 0.71-0.88; P < 0.001).

CONCLUSIONS:

Asians with gastric adenocarcinoma have superior outcomes in Los Angeles County. These outcomes verify disparities in gastric cancer survival among different races and ethnicities independent of established clinical and pathologic factors.

PMID:
19622590
[PubMed - indexed for MEDLINE]
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