CPA chemotherapy combination used to treat chronic lymphocytic leukemia (CLL). It includes the drugs chlorambucil hydrochloride and prednisone. Also called chlorambucil-prednisone, chlorambucil-prednisone regimen, and CP regimen.More InformationCHLORAMBUCIL-PREDNISONESearch NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#