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August 2, 2026Hemoglobin

α- and β-Thalassemia Show Distinct Bone Microarchitectural Phenotypes in Southeast Asian Adults: Associations with Marrow Expansion Phenotype

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Authors

NTNattiya TeawtrakulDSDueanchonnee SribenjalakDTDaris Theerakulpisut

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Overview

Prospective study reveals different bone characteristics in α-thalassemia versus β-thalassemia, suggesting implications for management.

Key Points

  • This study aims to characterize bone microarchitecture differences between α- and β-thalassemia in adults.
  • Prospective study of 86 adults with thalassemia in northeast Thailand.
  • Measured lumbar spine and femoral neck bone mineral density and trabecular bone score using DXA.
  • Adjusted genotype effects for transfusion-dependent thalassemia status and marrow expansion phenotype score.
  • α-thalassemia showed higher lumbar spine BMD (0.822 ± 0.130 g/cm²) compared to β-thalassemia (0.754 ± 0.117 g/cm²; p = 0.039).
  • Lower frequency of low lumbar spine Z-score (<−2) in α-thalassemia (12.5% vs. 45.7%; p = 0.021).
  • Mean marrow expansion phenotype score was lower in α-thalassemia (0.88 ± 0.62) compared to β-thalassemia (1.84 ± 0.88; p < 0.001).

Cite This Study

Teawtrakul et al. (2026) studied this question.

synapsesocial.com/papers/6a6eeb101b0468a7eeab3d5ehttps://doi.org/10.1080/03630269.2026.2708953
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