We have studied the beta-thalassemia mutations in 91 chromosomes of 43 patients with beta-thalassemia major and five with Hb S-beta-thalassemia, aged 6 months to 24 years. Many are blood transfusion-dependent and are being treated at the major hospital, the Princess Basma Hospital, in Irbid, Jordan. As many as 13 different mutations have been identified; three Mediterranean mutations [IVS-I-110 (G-->A), IVS-II-I (G-->A), and IVS-II-745 (C-->G)] were present in 54% of the chromosomes tested, while six other Mediterranean alleles were found in 24% of the chromosomes, for a total of 78% of Mediterranean origin. Sixteen chromosomes carried mutations which were observed in Arabian, Southeast Asian/Indian, and Iranian/Egyptian or Black populations; four beta-thalassemia mutations remained unidentified.
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http://dx.doi.org/10.3109/03630269408996198 | DOI Listing |
Adv Lab Med
December 2024
Department of Laboratory Service, Área de Gestión Sanitaria Norte de Huelva, Hospital de Riotinto, Minas de Riotinto, Huelva, Spain.
Objectives: To describe a variant hemoglobin that interferes with HbA analysis by cation exchange HPLC.
Case Presentation: A 78 years-old Spanish male patient visited the Internal Medicine Clinic for a routine check-up, with HbA included to screen for diabetes. He had suffered hypertension and dyslipidemia, and the patient had no previous symptoms suggestive of diabetes such as hyperglycemia, weight loss, polydipsia, polyuria or tiredness.
Accumulation of free α-globin is a critical factor in the pathogenesis of β-thalassemia. Autophagy plays a crucial role in clearing toxic free α-globin, thereby reducing disease severity. However, the impact of natural mutations in autophagy-related genes (ATGs) on the phenotypic variability of β-thalassemia remains unclear.
View Article and Find Full Text PDFHematology
December 2024
Department of Laboratory Medicine, Shenzhen Pediatrics Institute of Shantou University Medical College, Shenzhen, People's Republic of China.
Objective: To explore the effect of the Mentzer Index (MI) in screening for children thalassemia (TT) minor.
Methods: We determined the MI cutoff value of diagnosing TT minor in children by utilizing a receiver operating characteristic (ROC) curve. Samples with MI values below this threshold, and no detectable gene mutations or IDA were further analyzed using Sanger sequencing or specific primer GAP-PCR.
Front Genet
November 2024
Center for Medical Genetics and Prenatal Diagnosis, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China.
Int J Mol Sci
November 2024
Center of Expertise in Hemoglobinopathies and Their Complications, Thalassemia and Sickle Cell Disease Unit, Hippokration General Hospital, 41221 Athens, Greece.
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