MAC Regimen

**Semantic type:** Therapeutic or Preventive Procedure

**Definition:** A regimen consisting of methotrexate, dactinomycin (Actinomycin-D) and chlorambucil, used for the treatment of good-prognosis metastatic gestational trophoblastic tumors (GTT).

**Synonyms:** - MAC - Methotrexate-Actinomycin-D-Chlorambucil Regimen - Methotrexate/Dactinomycin/Cyclophosphamide Regimen