ABCB1 and infection: We assessed relationships between PPQ concentration and probability of detecting infections with P. falciparum containing mutations associated with decreased aminoquinoline sensitivity, including in pfmdr1, the gene that encodes multidrug resistance protein 1 (PF3D7_0523000), and in pfcrt, the gene that encodes the chloroquine resistance transporter (PF3D7_0709000).