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Endocrine side effects have included inhibition of endogenous testosterone release by means of feedback inhibition of pituitary luteinizing hormone (LH). Large doses of exogenous anabolic steroids may suppress spermatogenesis through inhibition of pituitary follicle stimulating hormone (FSH). The androgenic activity of anabolic steroids may decrease levels of thyroxin-binding globulin and result in decreased total T4 serum levels and increased resin uptake of T3 and T4. Free thyroid hormone levels remain unchanged and there is no clinical evidence of thyroid dysfunction. [ Ref ]
At 3 months after entry into the study, 51% of patients with disease of idiopathic etiology (21 of the 41 evaluable patients from both groups) showed improvement based on investigator's evaluation of transfusion requirements and peripheral blood counts. Hematological response rate (complete/moderate based on sponsor's evaluation) at 3 months for the ATGAM and androgen group was 44% compared with 43% for the group receiving ATGAM, androgen and bone marrow infusion. The group of patients who received mismatched bone marrow infusion had better estimated 1-year survival rate, although the difference between these estimates was not statistically significant (p=); 83% at 12 months for the group receiving bone marrow infusion versus 59% for the ATGAM and androgen alone group. Estimated 1-year survival rate for both groups combined was 73%.