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Beta-thalassemia is a heterogeneous group of hereditary blood disorders characterized by defects in the synthesis of the β- chains of hemoglobin, resulting in variable phenotypes ranging from severe anemia to clinically asymptomatic individuals. This study aims to assess the serum PTH, vitamin D, calcium, phosphorus, alkaline phosphatase, and magnesium levels in β-thalassemia major patients. A total of 50 (30 male and 20 female) patients with β- thalassemia major with ages range 11- 16 years and an equal number of sex-matched healthy adolescents as a control group were included in this study. A total of 52% of patients were lived in an urban area, and there was no significant difference between patients and the control group regarding residency. Male patients showed low statistically significant (P 0.05) mean serum PTH, vitamin D, and calcium levels, but mean serum phosphorus and alkaline phosphatase levels were significantly higher (P 0.05) as compared to the male control group. However, female patients had low, but without statistical significant (P&gt;0.05) mean serum PTH level, whereas vitamin D and calcium levels were highly significant (P 0.05) reduced. The phosphorus and ALP levels were highly significantly (P 0.05) increased as compared to female controls. Regarding β- thalassemia major group, the current study showed male patients had non-significant (P 0.05) higher levels of PTH, calcium, phosphorus, and ALP. In contrast, vitamin D level was non-significantly (P 0.05) low in male patients as compared to female patients. Mean serum level of PTH had a negative correlation with phosphorus, but it had a positive association with vitamin D, calcium, ALP, and magnesium. In conclusion, this study demonstrated that β-thalassemia major patients have a markedly deranged biochemical metabolic bone profile. Regular monitoring of PTH and biochemical mineral profile is also recommended.

PARATHYROID HORMONE AND BIOCHEMICAL METABOLIC BONE MARKERS IN PATIENTS WITH β-THALASSEMIA MAJOR IN MISAN PROVINCE / IRAQ