According to a study published in the Journal of Health Disparities Research Vietnamese breast cancer patients, particularly those older than 50, have higher rates of HER2+ breast cancer. The study collected data of Vietnamese women with invasive breast cancer at the Lester & Sue Smith Breast Cancer in Houston, Texas and found 15 of 33 women had HER2 over-expressing breast cancer. This rate of 45%, compared with 2010 Surveillance, Epidemiology, and End Results (SEER) registry data which showed 28% for all U.S. breast cancer patient diagnoses that year, indicates a statistically significant higher rate of HER2+ breast cancer with an odds ratio of 4.7 (45% vs 15%).
For the patients who were older than 50 years old, 52% were HER2 positive. Almost half of the HER2 group had grade 3 tumors. This data is similar to other studies that have looked at breast cancer in Vietnamese patients. Access full text here
Journal of Health Disparities Research and Practice Volume 9, Issue 4 Winter 2016 http://digitalscholarship.unlv.edu/jhdrp/