Tretinoin
Tretinoin , also known as all-"trans" retinoic acid ( ATRA ) , is medication used for the treatment of acne and acute promyelocytic leukemia . 
<triplet> Tretinoin <subj> acne <obj> medical condition treated <subj> acute promyelocytic leukemia <obj> medical condition treated <triplet> acne <subj> Tretinoin <obj> drug used for treatment <triplet> acute promyelocytic leukemia <subj> Tretinoin <obj> drug used for treatment