When a doctor knows about health disparities and risk factors among ethnic groups, that can play a significant role in catching and treating cancers. For Asian Americans, there are big gaps in that data. Now the first long-term study of cancer in those communities is getting underway. Researchers from Cedars-Sinai and UC Irvine will recruit from SoCal’s big Asaian American communities – with a goal of representing many ethnic groups. The initial target is for 20 thousand study participants nationwide. Josie Huang reports.