The hla-pgx-open HLA pharmacogenomics table (CPIC + PharmGKB), JSON or CSV. Open data, no key, not billable.

CC BY-SA 4.0 (hla-pgx-open). Every pgx response carries pgx_snapshot (UTC date and git commit of the table), the scope sentence and the attribution block. Guideline lookup over published CPIC and PharmGKB associations, keyed by two-field HLA allele. Decision support only; not a medical device. After an allogeneic transplant the recipient's blood carries the donor's genome, and which genome should drive an HLA-mediated drug alert is an open question (NCT06856226); this lookup reports both and decides nothing.