ABCB4|ATP-binding cassette, sub-family B (MDR/TAP), member 4|ABC21|GBD1|MDR2|MDR2/3|MDR3|PFIC-3|PGY3|ATP-binding cassette, subfamily B, member 4|P glycoprotein 3/multiple drug resistance 3|P-glycoprotein-3/multiple drug resistance-3|multidrug resistance