title: Acute leukemia after alkylating-agent therapy of ovarian cancer.
abstract: To estimate the leukemogenic potential of alkylating agents, we surveyed 70 institutions using these drugs for the frequency of second cancers in patients with advanced ovarian cancer. Thirteen cases of acute nonlymphocytic leukemia occurred among 5455 patients, as compared to 0.62 cases expected (relative risk = 21.0). All 13 had received alkylating agents. Nine also received radiotherapy. The relative risk for patients given chemotherapy was 36.1 and rose to 171.4 for those surviving for two years (rate = 13.75 per 1000 patients per year). To evaluate the role of therapy versus underlying disease, a historical control of 13,309 patients with ovarian cancer in the National Cancer Institute's End Results Program was analyzed. No excess of leukemia was noted in this group, even among 6596 women receiving radiation. The excess of acute nonlymphocytic leukemia, therefore, appears attribute to alkylating agents, although the effect may be enhanced by exposure to radiation, as previously suggested for Hodgkin's disease.
mesh_terms: D000208:Acute Disease; D000477:Alkylating Agents / Q000008:administration & dosage / Q000009:adverse effects*; D006585:Altretamine / Q000009:adverse effects; D002699:Chlorambucil / Q000009:adverse effects; D003520:Cyclophosphamide / Q000009:adverse effects; D005260:Female; D005472:Fluorouracil / Q000009:adverse effects; D006801:Humans; D007938:Leukemia / Q000139:chemically induced*; D004915:Leukemia, Erythroblastic, Acute / Q000139:chemically induced; D007951:Leukemia, Myeloid / Q000139:chemically induced; D015470:Leukemia, Myeloid, Acute / Q000139:chemically induced; D008558:Melphalan / Q000009:adverse effects; D008875:Middle Aged; D009362:Neoplasm Metastasis; D010051:Ovarian Neoplasms / Q000188:drug therapy* / Q000532:radiotherapy; D012306:Risk; D013852:Thiotepa / Q000009:adverse effects; D013997:Time Factors; D014499:Uracil Mustard / Q000009:adverse effects
chemical_list: D000477:Alkylating Agents; D002699:Chlorambucil; D003520:Cyclophosphamide; D013852:Thiotepa; D008558:Melphalan; D006585:Altretamine; D005472:Fluorouracil; D014499:Uracil Mustard