This could raise the possibility of the aggressiveness of breast carcinoma in the neighboring country of Laos, which might share a similar ethnic background; however, the prevalence of the HER2-positive subtype differs around Asia, ranging from 6% to 65%, with the median being 19% by immunohistochemistry for score 3+ cases and 25% by FISH (Tan et al., 2010). The gene discussed is ERBB2; the disease is breast carcinoma.