Why Single-Variant Pharmacogenomics Is Misleading: Star Alleles, Diplotypes, and What DTC Arrays Miss
A confident pharmacogenomics result from a single SNP looks reassuring and is often wrong. Real PGx is diplotype (star-allele) calling, and consumer genotyping arrays like 23andMe can't do it reliably. Here's why single-variant annotation misleads, which genes you can and can't trust from array data, and what a defensible PGx tool actually has to do.