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Wu LS, Luo X, Tan M, Zhang LJ, Luo HF, Huang G, Huang P, Chen J, Chen Y. Prevalence of thalassemia-carrier couples and fertility risk assessment. Int J Hematol 2024; 119:374-382. [PMID: 38411864 DOI: 10.1007/s12185-024-03722-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 01/16/2024] [Accepted: 01/24/2024] [Indexed: 02/28/2024]
Abstract
Thalassemia is a highly prevalent hematologic disease in Guizhou, China. This study aimed to determine the epidemiological characteristics of thalassemia in couples at childbearing age and assess the neonatal risk of thalassemia in this subpopulation. A cohort of 4481 couples at childbearing age were recruited for thalassemia carrier screening by both traditional hematological tests and next-generation sequencing. Of them, 1314 (14.66%) thalassemia carriers were identified, including 857 (9.76%) α-thalassemia, 391 (4.36%) β-thalassemia, and 48 (0.54%) composite α and β-thalassemia. A total of 12 α-globin gene alterations and 16 β-globin mutations were detected, including four novel thalassemia mutations. SEA was the most common α-thalassemia genotype (26.86%), CD41-42 the most common β-thalassemia genotype (36.57%), and αα/- α3.7 + CD41-42 the most common composite α- and β-thalassemia genotype (18.75%). Ethnically, the Zhuang had the highest rate of thalassemia gene carriers among the ethnic groups. Geographically, Qiannan had the highest rate of thalassemia gene carriers. In addition, 38 of the 48 couples with composite α- and β-thalassemia were high-risk thalassemia carriers, and 4 carrying the -SEA/αα gene needed fertility guidance.
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Affiliation(s)
- Liu-Song Wu
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, 149 Dalian Rd., Zunyi, 56300, Guizhou, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, Guizhou, China
- Collaborative Innovation Center for Tissue Injury Repair and Regenerative Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Xi Luo
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, 149 Dalian Rd., Zunyi, 56300, Guizhou, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, Guizhou, China
- Collaborative Innovation Center for Tissue Injury Repair and Regenerative Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Mei Tan
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, 149 Dalian Rd., Zunyi, 56300, Guizhou, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, Guizhou, China
- Collaborative Innovation Center for Tissue Injury Repair and Regenerative Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Li-Jun Zhang
- Department of Pediatrics, The Qian-Nan-Zhou People's Hospital of Guizhou, Guizhou, China
| | - Hong-Fang Luo
- Department of Pediatrics, The 2nd Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China
| | - Ge Huang
- Clinical Laboratory, The Qian-Dong-Nan People's Hospital of Guizhou, Guizhou, China
| | - Pei Huang
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, 149 Dalian Rd., Zunyi, 56300, Guizhou, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, Guizhou, China
- Collaborative Innovation Center for Tissue Injury Repair and Regenerative Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Jindong Chen
- Exploring Health, LLC., 3 Lanyue Rd., Huangpu District, Guangzhou, 510663, China.
- Department of Urology, University of Rochester Medical Center, Rochester, NY, 14642, USA.
| | - Yan Chen
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, 149 Dalian Rd., Zunyi, 56300, Guizhou, China.
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, Guizhou, China.
- Collaborative Innovation Center for Tissue Injury Repair and Regenerative Medicine of Zunyi Medical University, Zunyi, Guizhou, China.
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Musallam KM, Lombard L, Kistler KD, Arregui M, Gilroy KS, Chamberlain C, Zagadailov E, Ruiz K, Taher AT. Epidemiology of clinically significant forms of alpha- and beta-thalassemia: A global map of evidence and gaps. Am J Hematol 2023; 98:1436-1451. [PMID: 37357829 DOI: 10.1002/ajh.27006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 06/27/2023]
Abstract
This systematic literature review assessed the global prevalence and birth prevalence of clinically significant forms of alpha- and beta-thalassemia. Embase, MEDLINE, and the Cochrane Library were searched for observational studies published January 1, 2000, to September 21, 2021. Of 2093 unique records identified, 69 studies reported across 70 publications met eligibility criteria, including 6 records identified from bibliography searches. Thalassemia prevalence estimates varied across countries and even within countries. Across 23 population-based studies reporting clinically significant alpha-thalassemia (e.g., hemoglobin H disease and hemoglobin Bart's hydrops fetalis) and/or beta-thalassemia (beta-thalassemia intermedia, major, and/or hemoglobin E/beta-thalassemia), prevalence estimates per 100 000 people ranged from 0.2 in Spain (over 2014-2017) to 27.2 in Greece (2010-2015) for combined beta- plus alpha-thalassemia; from 0.03 in Spain (2014-2017) to 4.5 in Malaysia (2007-2018) for alpha-thalassemia; and from 0.2 in Spain (2014-2017) to 35.7 to 49.6 in Iraq (2003-2018) for beta-thalassemia. Overall, the estimated prevalence of thalassemia followed the predicted pattern of being higher in the Middle East, Asia, and Mediterranean than in Europe or North America. However, population-based prevalence estimates were not found for many countries, and there was heterogeneity in case definitions, diagnostic methodology, type of thalassemia reported, and details on transfusion requirements. Limited population-based birth prevalence data were found. Twenty-seven studies reported thalassemia prevalence from non-population-based samples. Results from such studies likely do not have countrywide generalizability as they tended to be from highly specific groups. To fully understand the global prevalence of thalassemia, up-to-date, population-based epidemiological data are needed for many countries.
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Affiliation(s)
- Khaled M Musallam
- Thalassemia Center, Burjeel Medical City, Abu Dhabi, United Arab Emirates
| | | | | | | | | | | | | | | | - Ali T Taher
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
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Santoro G, Cro F, Poma F, Kullmann C, Lapucci C, Ferrari M. The need to perform α‐thalassemia genetic testing in Italian patients with β‐thalassemia trait: A case report. Clin Case Rep 2022; 10:e6340. [PMID: 36188041 PMCID: PMC9483816 DOI: 10.1002/ccr3.6340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/04/2022] [Accepted: 08/30/2022] [Indexed: 11/24/2022] Open
Abstract
Here, we describe a case report of a Sardinian woman diagnosed as pure beta‐thalassemia carrier for her anemia who underwent to alpha‐thalassemia genetic testing that revealed she was heterozygous for both thalssemias. This allowed to reach a conclusive diagnosis useful for family counseling and for assess the reproductive risk.
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Jiang F, Tang XW, Li J, Zhou JY, Zuo LD, Li DZ. Hb Lepore-Hong Kong: First Report of a Novel δ/β-Globin Gene Fusion in a Chinese Family. Hemoglobin 2021; 45:220-224. [PMID: 34309467 DOI: 10.1080/03630269.2021.1956945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We describe a new δ/β fusion gene causing β-thalassemia (β-thal) trait and its formation mechanism. The proband was a 39-year-old woman who presented with persistent microcytic microcytosis without iron deficiency. Molecular diagnoses revealed a δβ configuration within a 54 bp region between the Cap site (+22) and codon 8, causing a deletion (NG_000007.3: g.63154_70565del). This results in a variant that has been named Hb Lepore-Hong Kong and shows a decreased β-globin mRNA in carriers compared to that of normal subjects. It is assumed that combination of this variant with β-thal may cause severe β-thal syndrome.
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Affiliation(s)
- Fan Jiang
- Prenatal Diagnostic Center, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Xue-Wei Tang
- Prenatal Diagnostic Center, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Jian Li
- Prenatal Diagnostic Center, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Jian-Ying Zhou
- Prenatal Diagnostic Center, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Lian-Dong Zuo
- Prenatal Diagnostic Center, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Dong-Zhi Li
- Prenatal Diagnostic Center, Guangzhou Women and Children Medical Center, Guangzhou Medical University, Guangzhou, People's Republic of China
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Ebrahimi M, Mohammadi-Asl J, Rahim F. The worldwide molecular spectrum and distribution of thalassaemia: a systematic review. Ann Hum Biol 2021; 48:307-312. [PMID: 34032183 DOI: 10.1080/03014460.2021.1909135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
CONTEXT Thalassaemia is one of the most common inherited autosomal recessive disorders around the world. A considerable amount of literature has been published about the type of mutations and the prevalence of thalassaemia, but findings are often contradictory. OBJECTIVE This systematic review aimed to provide a comprehensive view of the prevalence of thalassaemia-associated mutations in different countries, their effect on haemoglobin (Hb) levels, as well as reporting thalassaemia-associated rare mutations. METHODS A systematic search of the literature was carried out through major indexing databases (MEDLINE/PubMed, Scopus, EMBASE, Cochrane central, and ISI web of science) using keywords: "Co-inheritance, αα, β, thalassaemia" and "α-β thalassaemia, Mediterranean anemia, mutations" from 1998-September 2019. Hand-searching was also performed. There was no language restriction. RESULTS The initial searches yielded 1059 studies, of which 92 articles were included following inclusion and exclusion criteria. Of these, 3.3% (3) of articles were cohort studies, and 96.7% (89) of the remaining articles were cross-sectional studies. Our findings showed that 45.6% (42) of researchers investigated β-thalassaemia, 22.9% (21) αα-β thalassaemia, and 31.5% (29) α thalassaemia. CONCLUSION The present study provides valuable information about the spectrum of thalassaemia-associated mutations, which can be useful for preventing thalassaemia, reducing costs of care, reducing the treatment-related side effects, and showing the most defective mutations.HighlightEvaluating the increase or decrease in the birth prevalence of thalassaemiaIdentifying the most common and rare mutations in various parts of the worldComparing researchers' findings from various parts of the world.
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Affiliation(s)
- Mina Ebrahimi
- Thalassaemia and Hemoglobinopathy Research Center, Research Institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Javad Mohammadi-Asl
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Fakher Rahim
- Thalassaemia and Hemoglobinopathy Research Center, Research Institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Challenges in Thalassemia Carrier Detection in a Low Resource Setting Area of Eastern Indonesia: the Use of Erythrocyte Indices. Mediterr J Hematol Infect Dis 2021; 13:e2021003. [PMID: 33489042 PMCID: PMC7813278 DOI: 10.4084/mjhid.2021.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 12/08/2020] [Indexed: 11/25/2022] Open
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Wen W, Guo M, Peng HB, Ma L. Optimization and application of a dried blood spot-based genetic screening method for thalassemia in Shenzhen newborns. World J Pediatr 2019; 15:610-614. [PMID: 31030386 DOI: 10.1007/s12519-018-00222-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 12/18/2018] [Indexed: 10/26/2022]
Abstract
BACKGROUND To optimize and apply an approach suitable for large-scale neonatal thalassemia genetic screening in China, thalassemia genotypes were determined by polymerase chain reaction-reverse dot blot using DNA extracted from dried blood spots (DBS) obtained from newborn screening programs. METHODS Firstly, the most suitable commercial DNA extraction kit for DBS was screened. Then, the appropriate amount of DBS required for the automated high-throughput DNA extraction system was evaluated. Finally, the thalassemia prevalence and genotype spectrum in Shenzhen were investigated in 2028 newborns using the optimized screening procedure. RESULTS The Magentec extraction kit was best suited for the automated DBS DNA extraction system using eight 3-mm DBS discs. The neonatal thalassemia prevalence in Shenzhen was 9.12%; 6.31% α-thalassemia, 2.37% β-thalassemia, and 0.44% α-/β-thalassemia. CONCLUSIONS Genetic screening based on DBS can precisely identify the thalassemia genotypes. Both α- and β-thalassemia are widely distributed in Shenzhen newborns. Newborn genetic screening is important for establishing a comprehensive thalassemia prevention program and for public education.
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Affiliation(s)
- Wei Wen
- Neonatal Screening Center, Shenzhen Maternity and Child Healthcare Hospital, Fuqiang Road 3012, Futian District, Shenzhen, 518017, China.
| | - Meng Guo
- Neonatal Screening Center, Shenzhen Maternity and Child Healthcare Hospital, Fuqiang Road 3012, Futian District, Shenzhen, 518017, China
| | - Hong-Bing Peng
- Neonatal Screening Center, Shenzhen Maternity and Child Healthcare Hospital, Fuqiang Road 3012, Futian District, Shenzhen, 518017, China
| | - Li Ma
- Neonatal Screening Center, Shenzhen Maternity and Child Healthcare Hospital, Fuqiang Road 3012, Futian District, Shenzhen, 518017, China
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Zhou JY, Jiang F, Li J, Chen GL, Li DZ. Coinheritance of Hb City of Hope ( HBB: c.208G>A) and β-Thalassemia: Compromising the Molecular Diagnosis of the Codons 71/72 (+A) ( HBB: c.216_217insA) Mutation by Reverse Dot-Blot Hybridization. Hemoglobin 2019; 43:145-147. [PMID: 31268351 DOI: 10.1080/03630269.2019.1626741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
More than 900 abnormal hemoglobin (Hb) β chain variants have now been characterized. The majority are due to point mutations resulting in a single amino acid substitution within the globin gene involved, with nearly twice as many β chain variants identified compared to α chain variants. Although most of these variants are clinically and hematologically silent, they can interact with different thalassemia mutations, which could sometimes render laboratory diagnostics in a routine setting difficult. In this study, we present a case of coinheritance of Hb City of Hope [β69(E13)Gly→Ser; HBB: c.208G>A] and β-thalassemia (β-thal), that compromises the molecular diagnosis of β-thal trait.
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Affiliation(s)
- Jian-Ying Zhou
- a Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center , Guangzhou Medical University , Guangzhou , Guangdong Province , People's Republic of China
| | - Fan Jiang
- a Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center , Guangzhou Medical University , Guangzhou , Guangdong Province , People's Republic of China
| | - Jian Li
- a Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center , Guangzhou Medical University , Guangzhou , Guangdong Province , People's Republic of China
| | - Gui-Lan Chen
- a Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center , Guangzhou Medical University , Guangzhou , Guangdong Province , People's Republic of China
| | - Dong-Zhi Li
- a Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center , Guangzhou Medical University , Guangzhou , Guangdong Province , People's Republic of China
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Jiang F, Chen GL, Li J, Zhou JY, Liao C, Li DZ. Analysis of the Genotypes in a Chinese Population with Increased Hb A2and Low Hematological Indices. Hemoglobin 2018; 42:154-158. [DOI: 10.1080/03630269.2018.1509869] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Fan Jiang
- Southern Medical University, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
- Prenatal Diagnostic Center, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Gui-Lan Chen
- Prenatal Diagnostic Center, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Jian Li
- Prenatal Diagnostic Center, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Jian-Ying Zhou
- Prenatal Diagnostic Center, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Can Liao
- Southern Medical University, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
- Prenatal Diagnostic Center, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Dong-Zhi Li
- Prenatal Diagnostic Center, Guangzhou Women and Children’s Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of China
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Cheng C, Peng Q, Li S, Yang L, Li W, Rao C, Lu X. Coinheritance of α- and β-Thalassemia with a Novel Mutation (HBB: c.268_281delAGTGAGCTGCACTG) in a Chinese Family. Hemoglobin 2017; 41:288-290. [PMID: 29251005 DOI: 10.1080/03630269.2017.1405018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chuyun Cheng
- Department of Gynecology and Obstetrics, Dongguan Eighth People’s Hospital, Dongguan, Guandong Province, People’s Republic of China
| | - Qi Peng
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong Province, People’s Republic of China
- Department of Pediatrics, Dongguan Eighth People’s Hospital, Dongguan, Guangdong Province, People’s Republic of China
| | - Siping Li
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong Province, People’s Republic of China
- Department of Pediatrics, Dongguan Eighth People’s Hospital, Dongguan, Guangdong Province, People’s Republic of China
| | - Lin Yang
- Department of Gynecology and Obstetrics, Dongguan Eighth People’s Hospital, Dongguan, Guandong Province, People’s Republic of China
| | - Wenrui Li
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong Province, People’s Republic of China
- Department of Pediatrics, Dongguan Eighth People’s Hospital, Dongguan, Guangdong Province, People’s Republic of China
| | - Chunbao Rao
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong Province, People’s Republic of China
| | - Xiaomei Lu
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong Province, People’s Republic of China
- Department of Pediatrics, Dongguan Eighth People’s Hospital, Dongguan, Guangdong Province, People’s Republic of China
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Rizo-de-la-Torre LC, Ibarra B, Sánchez-López JY, Magaña-Torres MT, Rentería-López VM, Perea-Díaz FJ. Three novel HBB mutations, c.-140C>G (-90 C>G), c.237_256delGGACAACCTCAAGGGCACCT (FS Cd 78/85 -20 bp), and c.315+2T>G (IVS2:2 T>G). Update of the mutational spectrum of β-Thalassemia in Mexican mestizo patients. Int J Lab Hematol 2017; 39:539-545. [PMID: 28603845 DOI: 10.1111/ijlh.12692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 03/24/2017] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Beta-thalassemia (β-thal) is frequent in Mexican patients with microcytosis and hypochromia. We report three novel mutations and analyze the actual mutational spectrum in Mexican population. METHODS One hundred and forty-nine β-thal Mexican mestizo patients were studied (154 alleles). ARMS-PCR was performed to identify Cd39C>T, IVS1:1G>A, IVS1:110G>A, -28A>C, initiation codonA>G and IVS1:5G>A mutations, and gap-PCR for δβ-thal Spanish type. DNA sequencing of HBB gene was carried out in negative samples for the initial screening. RESULTS Fifteen different HBB gene mutations were observed in 148 alleles; three of them are novel: -90C>G, 20 bp deletion (at codons 78/85), and IVS2:2T>G; the mutation IVS1:6T>C that was observed for first time in our population; and eleven previously described mutations. Six alleles showed normal HBB sequence. To date, a total of 21 different mutations have been observed in Mexican patients; the four most frequent mutations are of Mediterranean origin: Cd39C>T (37.2%), IVS1:1G>A (17.3%), IVS1:110G>A (13.9%), and δβ-thal Spanish type (9.0%), which represent 77.4% of the total studied alleles. CONCLUSION Considering the novel mutations -90C>G, -20 bp Cd78/85, IVS2:2T>G and the first observation of IVS1:6T>C, the molecular spectrum of β-thal in Mexicans comprises 21 different mutations, confirming the high allelic heterogeneity in Mexicans.
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Affiliation(s)
- L C Rizo-de-la-Torre
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México.,División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - B Ibarra
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - J Y Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - M T Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - V M Rentería-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - F J Perea-Díaz
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
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Low Hemoglobin among Pregnant Women in Midwives Practice of Primary Health Care, Jatinangor, Indonesia: Iron Deficiency Anemia or β-Thalassemia Trait? Anemia 2017. [PMID: 28634546 PMCID: PMC5467296 DOI: 10.1155/2017/6935648] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Low hemoglobin (Hb) or anemia is common among pregnant women in developing countries which may cause adverse pregnancy outcomes and maternal deaths. Our study aimed to assess Hb level measured by midwives in primary health care facility at rural area of Jatinangor, Indonesia, and to explore whether the anemia was due to iron deficiency (IDA) or β-thalassemia trait (β-TT). Pregnant women (n = 105) had finger prick test for Hb level during a regular antenatal care examination from October to November 2016. Hb level by finger prick test was compared with venous blood, measured by complete blood count (CBC). Indices including MCV and MCH and indices of Shine & Lal, Mentzer, Srivastava, Engels & Frase, Ehsani, and Sirdah were analyzed to differentiate anemia due to IDA and anemia due to suspect β-TT. HbA2 was measured to confirm β-TT. Anemic pregnant women were found in 86.7% by finger prick test compared to 21.9% (n = 23) by CBC. The prevalence of β-TT in our study was 5.7%. Hb measurement among pregnant women in low resource area is highly important; however, finger prick test in this study showed a high frequency of anemia which may lead to iron oversupplementation. A standard CBC is encouraged; MCV and MCH would help midwives to identify β-TT.
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Jiang H, Liu S, Zhang YL, Wan JH, Li R, Li DZ. Association of an α-Globin Gene Cluster Duplication and Heterozygous β-Thalassemia in a Patient with a Severe Thalassemia Syndrome. Hemoglobin 2015; 39:102-6. [DOI: 10.3109/03630269.2015.1012678] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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