JOURNAL OF PEDIATRIC HEMATOLOGY ONCOLOGY, cilt.25, sa.11, ss.885-889, 2003 (SCI-Expanded, Scopus)
Purpose: To investigate whether transforming growth factor-PI (TGF-beta1) gene polymorphisms have a role in the development, clinical progress, and treatment response in children with idiopathic thrombocytopenic purpura (ITP). Patients and Methods: Thirty-five children with acute ITP, 40 children with chronic ITP, and 97 healthy children were enrolled. After genomic DNA was extracted, TGF-beta1 gene 509 (C-->T), codon 25 (Arg-->Pro), and codon 10 (Leu-->Pro) polymorphisms were studied C using a coupled polymerase chain reaction-restriction enzyme digestion method. Results: The genotype and allele frequencies of TGF-beta1 polymorphisms between acute ITP, chronic ITP, and control group did not differ significantly. No significant association was found between TGF-beta1 polymorphisms and therapy response. Conclusions: These results demonstrate that the frequency of TGF-beta1 gene 509 (C-->T), codon 25 (Arg-->Pro), and codon 10 (Leu-->Pro) polyrnorphisms and alleles do not play a role as a genetic risk factor in the development and clinical progress of ITP. Different results may be obtained with further studies involving larger patient populations and other TGF-beta1 gene polymorphisms.