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Kalleas C, Anagnostopoulos K, Sinopoulou K, Delaki E, Margaritis D, Bourikas G, Tsatalas C, Kortsaris A, Tentes I. Phenotype and Genotype Frequency of β-Thalassemia and Sickle Cell Disease Carriers in Halkidiki, Northern Greece. Hemoglobin 2011; 36:64-72. [DOI: 10.3109/03630269.2011.642489] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jiffri EH, Bogari N, Zidan KH, Teama S, Elhawary NA. Molecular updating of β-thalassemia mutations in the Upper Egyptian population. Hemoglobin 2010; 34:538-47. [PMID: 21077761 DOI: 10.3109/03630269.2010.526440] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We have updated the dataset of the molecular spectrum of the β-thalassemia (β-thal) in Upper Egypt. Buccal swabs were analyzed from 94 unrelated patients with β-thal major (β-TM) using reverse dot-blot and multiplex amplification refractory mutation system-polymerase chain reaction (ARMS-PCR). The most frequent mutation was IVS-I-110 (G>A) (57%). The IVS-I-110, IVS-I-6 (T>C) and IVS-I-1 (G>A) mutations accounted for 87% of the β-thal anomalies. The codon 39 (C>T) and frameshift codon (FSC) 6 (-A) (GAG>-GG) mutations were only detected in Al-Minya and Qina, respectively. We did not observe the IVS-II-745 (C>G) or -101 (C>T) mutations. Forty-three percent of Upper Egyptians were homozygotes. Our efforts were an important step to complete the mutation map of β-thal in Egypt restricted to Cairo and the Nile Delta regions. This study will help to develop preventative programs for Upper Egyptians. It addressed the genetic drift of the β-thal gene mutations in Africa, Asia, and Europe.
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Affiliation(s)
- Essam H Jiffri
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdul-Aziz University-Jeddah, Jeddah, Kingdom of Saudi Arabia
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Boussiou M, Karababa P, Sinopoulou K, Tsaftaridis P, Plata E, Loutradi-Anagnostou A. The molecular heterogeneity of β-thalassemia in Greece. Blood Cells Mol Dis 2008; 40:317-9. [DOI: 10.1016/j.bcmd.2007.11.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2007] [Revised: 10/28/2007] [Accepted: 11/05/2007] [Indexed: 10/22/2022]
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. RL, . HM, . ER. Multiplex PCR Assay for the Detection of Aflatoxigenic and Non-Aflatoxigenic Aspergilli. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/jm.2008.136.142] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Glynou K, Kastanis P, Boukouvala S, Tsaoussis V, Ioannou PC, Christopoulos TK, Traeger-Synodinos J, Kanavakis E. High-Throughput Microtiter Well-Based Chemiluminometric Genotyping of 15 HBB Gene Mutations in a Dry-Reagent Format. Clin Chem 2007; 53:384-91. [PMID: 17259233 DOI: 10.1373/clinchem.2006.077776] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Background: Hemoglobinopathies are the most common inherited diseases worldwide. Various methods for genotyping of hemoglobin, beta (HBB) gene mutations have been reported, but there is need for a high sample-throughput, cost-effective method for simultaneous screening of several mutations. We report a method that combines the high detectability and dynamic range of chemiluminescence with the high allele-discrimination ability of probe extension reactions for simultaneous genotyping of 15 HBB mutations in a high sample-throughput, dry-reagent format.
Methods: We genotyped the HBB mutations IVSI-110G>A, CD39C>T, IVSI-1G>A, IVSI-6T>C, IVSII-745C>G, IVSII-1G>A, FSC6GAG>G-G, −101C>T, FSC5CCT>C−, IVSI-5G>A, FSC8AAG>−G, −87C>G, IVSII-848C>A, term+6C>G, and HbS (cd6GAG>GTG). The method used comprises the following: (a) duplex PCR that produces fragments encompassing all 15 mutations, (b) probe extension reactions in the presence of fluorescein-modified dCTP, using unpurified amplicons, and (c) microtiter well-based assay of extension products with a peroxidase-antifluorescein conjugate and a chemiluminogenic substrate. We used lyophilized dry reagents to simplify the procedure and assigned the genotype by the signal ratio of the normal-to-mutant–specific probe.
Results: We standardized the method by analyzing 60 samples with known genotypes and then validated by blindly genotyping 115 samples with 45 genotypes. The results were fully concordant with sequencing. The reproducibility (including PCR, probe extension reaction, and chemiluminometric assay) was studied for 20 days, and the CVs were 11%–19%.
Conclusions: This method is accurate, reproducible, and cost-effective in terms of equipment and reagents. The application of the method is simple, rapid, and robust. The microtiter well format allows genotyping of a large number of samples in parallel for several mutations.
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Liao HK, Su YN, Kao HY, Hung CC, Wang HT, Chen YJ. Parallel minisequencing followed by multiplex matrix-assisted laser desorption/ionization mass spectrometry assay for beta-thalassemia mutations. J Hum Genet 2005; 50:139-150. [PMID: 15761692 DOI: 10.1007/s10038-005-0234-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2004] [Accepted: 01/17/2005] [Indexed: 11/25/2022]
Abstract
Beta-thalassemia is a common monogenic disease caused by mutations in the human beta-globin gene (HBB), many of which are differentially represented in human subpopulations stratified by ethnicity. This study describes an efficient and highly accurate method to screen for the eight most-common disease-causing mutations, covering more than 98% of HBB alleles in the Taiwanese population, using parallel minisequencing and multiplex assay by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The MALDI-TOF MS was optimized for sensitivity and resolution by "mass tuning" the PinPoint assay for eight HBB SNPs. Because of the close proximity and clustering of mutations in HBB, primer extension reactions were conducted in parallel. Efficient sequential desalting using POROS and cationic exchange chromatography allowed for an unambiguous multiplex genotyping by MALDI-TOF MS. The embellishing SNP assay allowed for highly accurate identification of the eight most-common beta-thalassemia mutations in homozygous normal control, carrier, and eight heterozygous carrier mixtures, as well as the diagnosis of a high-risk family. The results demonstrated a flexible strategy for rapid identification of clustering SNPs in HBB with a high degree of accuracy and specificity. It can be adapted easily for high-throughput diagnosis of various hereditary diseases or to establish family heritage databases for clinical applications.
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Affiliation(s)
- Hsin-Kai Liao
- Institute of Chemistry, Academia Sinica, Taipei, 11529, Taiwan, Republic of China
| | - Yi-Ning Su
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
| | - Hung-Yi Kao
- Department of Chemical Engineering, National Taipei University of Technology, Taipei, Taiwan, Republic of China
| | - Chia-Cheng Hung
- Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
| | - Hsueh-Ting Wang
- Department of Chemistry, National Changhua University of Education, Changhua, Taiwan, Republic of China
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei, 11529, Taiwan, Republic of China.
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Patrinos GP, Kollia P, Papadakis MN. Molecular diagnosis of inherited disorders: lessons from hemoglobinopathies. Hum Mutat 2005; 26:399-412. [PMID: 16138310 DOI: 10.1002/humu.20225] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Hemoglobinopathies constitute a major health problem worldwide, with a high carrier frequency, particularly in certain regions where malaria has been endemic. These disorders are characterized by a vast clinical and hematological phenotypic heterogeneity. Over 1,200 different genetic alterations that affect the DNA sequence of the human alpha-like (HBZ, HBA2, HBA1, and HBQ1) and beta-like (HBE1, HBG2, HBG1, HBD, and HBB) globin genes are mainly responsible for the observed clinical heterogeneity. These mutations, together with detailed information about the resulting phenotype, are documented in the globin locus-specific HbVar database. Family studies and comprehensive hematological analyses provide useful insights for accurately diagnosing thalassemia at the DNA level. For this purpose, numerous techniques can provide accurate, rapid, and cost-effective identification of the underlying genetic defect in affected individuals. The aim of this article is to review the diverse methodological and technical platforms available for the molecular diagnosis of inherited disorders, using thalassemia and hemoglobinopathies as a model. This article also attempts to shed light on issues closely related to thalassemia diagnostics, such as prenatal and preimplantation genetic diagnoses and genetic counseling, for better-quality disease management.
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Affiliation(s)
- George P Patrinos
- Erasmus University Medical Center, Faculty of Medicine and Health Sciences, MGC-Department of Cell Biology and Genetics, Rotterdam, The Netherlands.
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Abstract
A large number of disease-causing bacteria and viruses are being sequenced and PCR is increasingly used for the diagnosis of the diseases. We have designed a multiplex PCR system for hepatitis B virus (HBV), a DNA virus, and hepatitis E virus (HEV), an RNA virus. A modified technique has been standardized for simultaneous extraction of DNA and RNA, followed by a one-step RT-PCR/PCR.
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Affiliation(s)
- V K Singh
- School of Biotechnology, Devi Ahilya University, Khandwa Road, Indore, 452 017, India
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Yavarian M, Harteveld CL, Batelaan D, Bernini LF, Giordano PC. Molecular spectrum of beta-thalassemia in the Iranian Province of Hormozgan. Hemoglobin 2001; 25:35-43. [PMID: 11300348 DOI: 10.1081/hem-100103068] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Prevention of beta-thalassemia implies knowledge of the molecular spectrum occurring in the population at risk. This knowledge is necessary, especially when a prevention protocol is applied to a multiethnic population. For this purpose, we have recently analyzed a large population of Iranian patients living in the Province of Hormozgan in Iran, and a small group of Iranian patients living in The Netherlands. We have found a different mutation spectrum in both populations as compared to the data obtained by other authors for the Iranian regions of Tehran, Fars, Sistan Balouchestan, Bushehr, and Khouzestan. The IVS-I-5 (G-->C) is the most frequent mutant in the province of Hormozgan (69%), followed by the IVS-II-1 (G-->A) (9.6%), while the IVS-I-1 (G-->A) was the most frequent defect found in the Iranian population sample in The Netherlands. The IVS-II-745 (C-->G) mutation in cis with the 5'UTR (untranslated region) +20 (C-->T) transition was observed in two unrelated, transfusion-dependent homozygotes, living in the Hormozgan Province where, in contrast with populations living in other provinces of Iran, no IVS-I-110 (G-->A) or IVS-I-1 (G-->A) mutations were found. We report the molecular spectra of our population samples and compare them with the mutation spectra observed in the Iranian populations by other authors. We discuss the severe phenotype of the patients homozygous for the IVS-II-745 (C-->G) mutation, linked in cis to the 5'UTR +20 (C-->T) transition. Molecular analysis using commercial kits is briefly compared with denaturing gradient gel electrophoresis, emphasizing the value of a rapid method of detection for molecular defects in areas where many mutations occur.
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Affiliation(s)
- M Yavarian
- The Thalassemia Medical Centre, Medical Faculty, Bandar Abbas University, Iran
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Landin B, Alvelius G, Rai DK, Elinder G. Compound heterozygosity for Hb Tacoma [beta30(B12)Arg-->Ser] and beta+-thalassemia. Hemoglobin 2000; 24:253-7. [PMID: 10975446 DOI: 10.3109/03630260008997534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- B Landin
- Department of Medical Laboratory Sciences and Technology, Huddinge University Hospital, Stockholm, Sweden.
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