BACKGROUND AND OBJECTIVES: Seven Italian centers reported data on survival, causes of death and appearance of complications in patients with thalassemia major. The interactions between gender, birth cohort, complications, and ferritin on survival and complications were analyzed. DESIGN AND METHODS: Survival after the first decade was studied for 977 patients born since 1960 whereas survival since birth and complication appearance was studied for the 720 patients born after 1970. Better survival was demonstrated for patients born in more recent years (p<0.00005) and for females (p=0.0003); 68% of the patients are alive at the age of 35 years. In the entire population 67% of the deaths were due to heart disease. RESULTS: There was a significant association between birth cohort and complication-free survival (p<0.0005). The prevalence of complications was: heart failure 6.8%, arrhythmia 5.7%, hypogonadism 54.7%, hypothyroidism 10.8%, diabetes 6.4%, HIV infection 1.7%, and thrombosis 1.1%. Lower ferritin levels were associated with a lower probability of heart failure (hazard ratio =3.35, p<0.005) and with prolonged survival (hazard ratio = 2.45, p<0.005), using a cut-off as low as 1,000 ng/mL. INTERPRETATION AND CONCLUSIONS: Survival and complication-free survival of patients with thalassemia major continue to improve, especially for female patients born shortly before or after the availability of iron chelation.

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Survival and complications in patients with thalassemia major treated with transfusion and deferoxamine

Biology and clinical significance of cytogenetic abnormalities in childhood acute lymphoblastic leukemia.

Clinical and biologic relevance of immunologic marker studies in childhood acute lymphoblastic leukemia

Improved outcome in adult B-cell acute lymphoblastic leukemia

Current Status of Cytogenetic Research in Childhood Acute Lymphoblastic Leukemia

Thirty-two children or adolescents had B cell acute lymphocytic leukemia (ALL) diagnosed by demonstration of surface immunoglobulin expression on greater than 10% of their bone marrow blasts. All patients had greater than 25% bone marrow lymphoblasts. Only five of 32 patients (16%) presented with an abdominal mass; however, 24 cases (75%) had FAB L3 morphology. By comparison with findings in common ALL, these 32 children were older (median age, 8 years) and had a higher incidence of central nervous system disease at presentation (22%); all but one were white, and 24 were males. Blast cells from individual cases expressed mu kappa (n = 13), mu lambda (n = 9), gamma kappa (n = 1), alpha kappa (n = 1), or mu with an undetermined light chain (n = 8). The most frequently identified cytogenetic abnormality was the classic B cell-associated t(8;14)(q23;q24) (n = 4); the t(1;19)(q23;p13.3), t(9;22)(q23;q11), and t(1;22) were observed in single cases. Twenty patients were treated uniformly on a single protocol designed for children with advanced B cell malignancy; therapy for the other 12 children varied. Nine children (28%) are surviving event-free; all but one for 3 years or more. We conclude that approximately 25% of children with B cell ALL are curable with intensive multiagent chemotherapy and that classification by immunophenotyping is superior to use of clinical and/or lymphoblast morphologic features.

Clinical and biological heterogeneity of childhood B cell acute lymphocytic leukemia: implications for clinical trials.

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Clinical and biological heterogeneity of childhood B cell acute lymphocytic leukemia: implications for clinical trials.