{"denomUnitsSelected":"Participants","description":"Polymorphisms in ABCG2 encode for BCRP, for which palbociclib has been shown as a substrate. Genomic DNA was to be isolated from peripheral blood samples from consenting patients to determine ABCG2 polymorphisms.","reportingStatus":"NOT_POSTED","timeFrame":"At enrollment","title":"Polymorphisms in Breast Cancer Resistance Protein (BCRP; ABCG2)","type":"OTHER_PRE_SPECIFIED"}