PTGFR and glaucoma: In Chinese patients with glaucoma, for example, a differential response to latanoprost has been described for single-nucleotide polymorphisms (SNPs) in the prostaglandin F2-alpha receptor (PTGFR) and solute carrier organic anion transporter family member 2A1 (SLCO2A1) genes17, with the study concluding that 2 SNPs-rs3766355 in PTGFR and rs4241366 in SLCO2A1—correlated with a good drug response over both the short- and long-term17.