Asian populations, the most common melanoma subtypes are acral and mucosal melanoma, which comprise greater than 70% of all melanomas, a rate that is much higher than that seen in white populations (6% to 7%). KIT mutations or amplification are reported about 20% in acral or mucosal melanomas (JAMA. 2011;305(22):2327-2334). Therefore, c-Kit mutations are likely the most common kind of genetic mutations in Asians, and the investigation of c-Kit inhibitors is a high priority in this population.