Dear FUMA users,
Currently FUMA only supports hg19. If your data is in GRCh38, you can:
1. use UCSC Liftover to obtain coordinates in hg19
2. provide your data with rsID (and not chr:pos in GRCh38). When only rsID is provided, FUMA looks up chr:pos from dbSNP version 146.
Of course there will be some loss of variants due to the conversion not being perfect. We are working on updating FUMA resources to GRCh38 so thanks for your patience.
Best,
Tanya