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Annals of Surgical Oncology

, Volume 16, Issue 9, pp 2433–2441 | Cite as

Disparities in Gastric Cancer Outcomes Among Asian Ethnicities in the USA

  • Joseph Kim
  • Brian Mailey
  • Maheswari Senthil
  • Avo Artinyan
  • Can-Lan Sun
  • Smita Bhatia
Healthcare Policy and Outcomes

Abstract

Background

Survival for gastric cancer is reportedly higher in Asians than for other races. It is unclear whether differences in outcome exist among Asian ethnicities. Our objective was to assess gastric cancer survival in Asian ethnic groups in a large heterogeneous population.

Methods

Asian-Americans treated for gastric adenocarcinoma between 1988 and 2006 were identified from the Los Angeles County Cancer Surveillance Program. Patients were stratified and compared by ethnicity (Korean, Japanese, Chinese, Vietnamese or Filipino).

Results

Of the 1,817 Asian-Americans in the study cohort, 45% (n = 810) were Korean, 25% (n = 462) were Chinese, 11% (n = 193) were Japanese, 10% (n = 188) were Filipino, and 9% (n = 164) were Vietnamese. For the entire cohort Koreans and Filipinos had the longest and shortest median survival (MS), respectively (22.4 and 10.3 months, respectively; P < 0.001). Multivariate analysis demonstrated that Japanese and Filipino ethnicity independently predicted worse survival compared with Korean ethnicity [hazard ratio (HR) 1.37, 95% confidence interval (CI) 1.08–1.73, P = 0.008; and HR 1.71, 95% CI 1.37–2.13, P < 0.001, respectively]. In the surgical cohort, Koreans and Filipinos had the longest and shortest survival, respectively (MS of 57.8 and 21.7 months, respectively; P < 0.001). Multivariate analysis of the surgical cohort also demonstrated that Japanese and Filipino ethnicity independently predicted worse survival compared with Korean ethnicity (HR 1.61, 95% CI 1.22–2.13, P < 0.001; and HR 1.66, 95% CI 1.24–2.22, P < 0.001, respectively).

Conclusion

There are differences in gastric cancer survival among Asian ethnicities. Future studies addressing varying environmental exposures and molecular expression patterns in gastric cancer are warranted to better understand these disparities in outcome.

Keywords

Gastric Cancer Asian Ethnicity Asian Ethnic Group Cancer Surveillance Program Gastric Cancer Survival 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society of Surgical Oncology 2009

Authors and Affiliations

  • Joseph Kim
    • 1
    • 2
  • Brian Mailey
    • 2
  • Maheswari Senthil
    • 2
  • Avo Artinyan
    • 2
  • Can-Lan Sun
    • 1
    • 3
  • Smita Bhatia
    • 1
    • 3
  1. 1.Comprehensive Cancer CenterCity of HopeDuarteUSA
  2. 2.Department of Oncologic SurgeryCity of HopeDuarteUSA
  3. 3.Department of Population SciencesCity of HopeDuarteUSA

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