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    Frequency and relationship of HLA allele in Turkish patients with Fanconi anemia
    (Cukurova University, 30 Eylül 2024) Zanjani, Behnoush Nasr; Çiftçi, Hayriye Şentürk; Çınar, Çiğdem Kekik; Celkan, Tülin Tiraje; Yalman, Nevin; Oğuz, Fatma Savran
    Purpose: Fanconi anemia (FA) is a childhood disorder inherited in an autosomal recessive manner. It is characterized by bone marrow failure, a range of congenital physical abnormalities, increased susceptibility to cancer, chromosomal instability, and heightened sensitivity to cross-linking agents. The aim of this study was to determine the role of the HLA Class I and Class II alleles in genetic susceptibility to Fanconi anemia in Turkish patients. Materials and Methods: In this study, we retrospectively evaluated the HLA-A, -B, and -DRB1 allele frequencies of patients with Fanconi anemia who underwent hematopoietic stem cell transplantation between 2010 and 2021. HLA-A, -B, -DR of all patients and healthy Turkish individuals were genotyped. Results: The study included 86 patients with Fanconi anemia and 300 healthy controls. The most common antigens in patients with Fanconi were HLA-A*02, HLA-B*35 and DRB1*11. Moreover, in the patient group, the HLA-A*23 allele was significantly lower than the control group. When we evaluated the patient group according to gender the HLA-A*01 allele was significantly higher in the female patient group. Conclusion: Our study provides valuable insights into the genetic susceptibility of Turkish patients with Fanconi anemia, focusing on the role of HLA Class I and Class II alleles. HLA-B*14 may be a risk factor and HLA-A*23 may be protective for Fanconi anemia. These results contribute to our understanding of the complex genetic factors underlying Fanconi anemia and may have implications for improved diagnosis, prognosis, and potential therapeutic interventions for affected individuals.