Can anyone recommend one or more databases that provides mappings between haplotypes and molecular phenotypes? The canonical example would be CYP450 variants (CYP2C19*1 --> WT; CYP2C19*2 --> non-functional; CYP2C19*17 --> ultra-rapid metabolizer).

I'm specifically looking for something that we might interact with programmatically for genome-wide studies.

Thanks!