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  • Title: New malignant diseases after allogeneic marrow transplantation for childhood acute leukemia.
    Author: Socié G, Curtis RE, Deeg HJ, Sobocinski KA, Filipovich AH, Travis LB, Sullivan KM, Rowlings PA, Kingma DW, Banks PM, Travis WD, Witherspoon RP, Sanders J, Jaffe ES, Horowitz MM.
    Journal: J Clin Oncol; 2000 Jan; 18(2):348-57. PubMed ID: 10637249.
    Abstract:
    PURPOSE: To determine the incidence of and risk factors for second malignancies after allogeneic bone marrow transplantation (BMT) for childhood leukemia. PATIENTS AND METHODS: We studied a cohort of 3, 182 children diagnosed with acute leukemia before the age of 17 years who received allogeneic BMT between 1964 and 1992 at 235 centers. Observed second cancers were compared with expected cancers in an age- and sex-matched general population. Risks factors were evaluated using Poisson regression. RESULTS: Twenty-five solid tumors and 20 posttransplant lymphoproliferative disorders (PTLDs) were observed compared with 1.0 case expected (P <.001). Cumulative risk of solid cancers increased sharply to 11.0% (95% confidence interval, 2.3% to 19.8%) at 15 years and was highest among children at ages younger than 5 years at transplantation. Thyroid and brain cancers (n = 14) accounted for most of the strong age trend; many of these patients received cranial irradiation before BMT. Multivariate analyses showed increased solid tumor risks associated with high-dose total-body irradiation (relative risk [RR] = 3.1) and younger age at transplantation (RR = 3.7), whereas chronic graft-versus-host disease was associated with a decreased risk (RR = 0.2). Risk factors for PTLD included chronic graft-versus-host disease (RR = 6.5), unrelated or HLA-disparate related donor (RR = 7. 5), T-cell-depleted graft (RR = 4.8), and antithymocyte globulin therapy (RR = 3.1). CONCLUSION: Long-term survivors of BMT for childhood leukemia have an increased risk of solid cancers and PTLDs, related to both transplant therapy and treatment given before BMT. Transplant recipients, especially those given radiation, should be monitored closely for second cancers.
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