Hi, when doing the analysis both in v2 data and v4, I realized that v2 has much less genetic ancestry annotation than v4. What I mean is the ‘Exome GroupMax FAF group’ in v2 and the ‘GroupMax FAF group’ in v4.
From v2 to v4, I know that for some ancestry groups, ancestry data entry increased about 100-fold. Is there an algorithm used to infer the ancestry of the entry? What contributes to the increase in annotation of the ancestry group? Or if it’s manually added, what’s the data source of ancestry to the variants used to be blank in v2?
Many thanks!