PGx allele definitions are given in either GRCh37 or GRCh38 reference coordinates. * PharmCAT, CPIC and PharmGKB as a rule use build GRCh38. * Aldy uses GRCh37. * The process of changing from PharmGKB API as a rule is using GRCh37 to GRCh38 alleles, but not for the PharmGKB API seems to be only partially completedall variants. For instance, in the PharmGKB API JSON-LD dataMoreover, the build is given as "hg38", but even when the actual coordinates are mostly GRCh37 (hg19). In the PharmGKB and CPIC Excel sheets, however, the move to GRCh38 is completed.  As is evident from liftOver, hg19 is not equal to GRCHh37, nor hg38 to GRCHh38. Are we sure that there are no errors here?This could also be a source of error.