We report a novel α2-globin chain hemoglobin (Hb) variant in a 23-year-old female of Chinese Han nationality. The Hb variant can be detected by glycated Hb electrophoresis (CapillaryS2, Hb A program). However, Hb fractions analyzed by capillary electrophoresis (CE) (CapillaryS2, Hb program) and high performance liquid chromatography (HPLC), (VARIANT II™ β-Thalassemia Short Program) showed no suspicious Hb variant. Sanger sequencing revealed a novel mutation [α67(E16)Thr→Ile, HBA2: c.203C>T]. We named this novel variant Hb Sichuan after the geographic origin of the proband.
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http://dx.doi.org/10.1080/03630269.2018.1540352 | DOI Listing |
Asian J Transfus Sci
September 2022
Department of Zoology, CCS HAU, Hisar, Haryana, India.
Context: Hemoglobinopathies are the most common heterogeneous group of monogenetic disorder in the world and its prevalence varies with geographical regions. India is developing country and many studies show a significant burden of hemoglobinopathies in India.
Aims: The aim of the present study was to check the prevalence of various hemoglobinopathies in anemic subjects using high-performance liquid chromatography (HPLC) method in Pune region which has multiple ethnic population groups from all parts of India.
Background: This study aimed to evaluate the efficacy of third-generation sequencing (TGS) and a thalassemia (Thal) gene diagnostic kit in identifying Thal gene mutations.
Methods: Blood samples (n = 119) with positive hematology screening results were tested using polymerase chain reaction (PCR)-based methods and TGS on the PacBio-Sequel-II-platform, respectively.
Results: Out of the 119 cases, 106 cases showed fully consistent results between the two methods, with TGS identified HBA1/2 and HBB gene mutations in 82 individuals.
BMC Med Inform Decis Mak
January 2025
Department of Pathology and Laboratory Medicine, The Aga Khan University Hospital, Stadium Road, Karachi, 74800, Pakistan.
Background: Reference intervals (RIs) are crucial for distinguishing healthy from sick individuals and vary across age groups. Hemoglobinopathies are common in Pakistan, making the quantification of hemoglobin variants essential for screening. Direct RIs are established by measuring values from a healthy reference population, whereas indirect RIs, use statistical analysis of routine lab data to estimate values, making it feasible in settings where direct data is unavailable.
View Article and Find Full Text PDFZhonghua Yi Xue Yi Chuan Xue Za Zhi
January 2025
Precision Medical Lab Center, People's Hospital of Yangjiang, Yangjiang, Guangdong 529500, China.
Objective: To analyze the correlation between variants in the start codon of the α-globin gene and phenotypes of thalassemia, so as to provide a basis for the diagnosis and prevention of α-thalassemia.
Methods: A retrospective study was conducted on 7 patients diagnosed by Yangjiang People's Hospital and Guangzhou Hybribio Co. Ltd.
Hemoglobin
January 2025
Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center affiliated with Guangzhou Medical University, Guangzhou, Guangdong Province, China.
Microcytosis of red cells and mild anemia are common in thalassemia carriers but those phenotypes are not specific. It is really a challenge for clinical interpretation of those variants. Co-segregation with disease in affected family members or specific phenotypes such as the abnormal Hb H are very helpful to assess the pathogenicity of rare variants.
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