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Rao E, Kumar Chandraker S, Misha Singh M, Kumar R. Global distribution of β-thalassemia mutations: An update. Gene 2024; 896:148022. [PMID: 38007159 DOI: 10.1016/j.gene.2023.148022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/29/2023] [Accepted: 11/21/2023] [Indexed: 11/27/2023]
Abstract
One excellent illustration of how a single gene abnormality may result in a spectrum of disease incidence is the incredible phenotypic variety of β-thalassemia, which spans from severe anemia and transfusion needs to an utterly asymptomatic sickness. However, genetic causes of β-thalassemia and how the anemia's severity might be altered at various stages in its pathophysiology have been well investigated. There are currently known to be more than 350 mutations that cause genetic disease. However only 20 β thalassemia mutations account for more than 80% of the β thalassemia mutation across the globe due to phenomenon of geographical clustering where each population has a few common mutations together with a varying number of rare ones. Due to migration of the population, the spectrum of thalassemia mutation in changing from time to time. In this review, efforts are made to collate β globin gene mutations in different countries and populations.
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Affiliation(s)
- Ekta Rao
- ICMR-National Institute of Research in Tribal Health, Jabalpur, M.P, India
| | | | - Mable Misha Singh
- Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Ravindra Kumar
- ICMR-National Institute of Research in Tribal Health, Jabalpur, M.P, India.
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Mousavi SS, Karami H, Tamadoni A, Mahmoudi H, Shekarriz R, Siami R, Hashemi-Soteh MB. Spectrum of Beta-Thalassemia Mutations in Potential Carriers with Microcytic Hypochromic Anemia from Mazandaran and Golestan, Northern Provinces of Iran. BIOMED RESEARCH INTERNATIONAL 2024; 2024:8664803. [PMID: 38322302 PMCID: PMC10846921 DOI: 10.1155/2024/8664803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/04/2023] [Accepted: 12/11/2023] [Indexed: 02/08/2024]
Abstract
Introduction β-Thalassaemia is the most common genetic disorder and is considered as a major public health concern in Iran. Different countrywide studies have shown a heterogeneous mutational basis of β-thalassaemia with different frequencies in each area. This study is aimed at investigating the common and rare mutations in Mazandaran and Golestan, northern provinces of Iran. Methods 5425 microcytic and hypochromic individuals were investigated from Mazandaran and Golestan provinces. From these, 1323 beta carrier or affected individuals were selected where 938 persons were from Mazandaran and 385 people were from Golestan province, respectively. Result 53 different mutations were identified, IVSII-1 (G>A) was the most common (59.14%) followed by Cd 22/23/24 (-7 bp) (5.34%), Cd 8 (-AA) (4.93%), Cd30 (G>A) (4.00%), and IVSI-5 (G>C) (3.70%) with a total of 77.11% in Mazandaran Province, respectively. In Golestan Province, IVSI-5 (G>C) was the most frequent (44.62%) followed by IVSII-1 (G>A) (27.18%), Cd 15 (TGG>TAG) (4.36%), Fr 8/9(+G) (3.85%), and Cd 8(-AA) (2.05%) with a total of 82.06%, respectively. From the 53 different mutations, 22 numbers have been observed in both provinces. Two deletions of the beta gene named Sicilian and Asian-Indian have been detected in Mazandaran with a frequency of 0.72% each. Conclusion The 53 different mutations identified in this study were the most ever reported mutations in the country. Due to diversity of different ethnic groups, there are many varieties of mutation in beta globin gene in Iran. It could be assumed that both founder effect and natural selection caused by migration from neighboring areas have complemented each other to produce the high frequency of unique alleles within each region.
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Affiliation(s)
| | - Hossein Karami
- Department of Pediatrics Hematology & Oncology, Thalassemia Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ahmad Tamadoni
- Non-Communicable Pediatric Diseases Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Hassan Mahmoudi
- The Clinical Research Development Unit of Amirkola Children's Hospital, Babol University of Medical Sciences, Babol, Iran
| | - Ramin Shekarriz
- Department of Hematology and Oncology, Gastrointestinal Cancer Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Rita Siami
- Ghaemshahr Health Center, Mazandaran University of Medical Sciences, Sari, Mazandaran, Iran
| | - Mohammad Bagher Hashemi-Soteh
- Immunogenetic Research Center, Molecular and Cell Biology Research Center, Biochemistry and Genetic Department, Medical Faculty, Mazandaran University of Medical Sciences, Sari, Iran
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Khamooshian S, Kazeminia M, Moradi K. In silico analysis and the pathogenicity classification of PTS gene variants among Iranian population. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00351-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
6-Pyruvoyl-tetrahydropterin synthase (PTPS) deficiency is an autosomal recessive disorder caused by PTS gene mutations. The aim of this study was to collect all PTS gene variants detected among Iranian patients with PTPS deficiency as well as in the Iranome project and classify them based on American College of Medical Genetics and Genomics (ACMG-AMP) guidelines.
Results
The number of PTS gene variants reported among Iranian PTPS patients and in the Iranome project were 19 and 36, respectively. Given that one variant was reported in both of our sources, the total number of variants was 54. These variants were classified as pathogenic (n = 11), likely pathogenic (n = 7), VUS (n = 23), likely benign (n = 1), and benign (n = 12). Out of 19 variants reported among Iranian PTPS patients, c.155A>G (p.Asn52Ser, rs104894275) and c.317C>T (p.Thr106Met, rs200712908) were the most frequent ones, each with a frequency of 10%. c.84-3C>G (rs1230781262) (7.5%) and c.281A>T (p.Asp94Val) (5%) were in the next ranks of the list of variants.
Conclusions
The ACMG-AMP criteria need to be updated depending on the type of disease. In addition, to the best of our knowledge, no template has been described for classifying the variants identified in PTPS deficiency. Therefore, this study can be a good reference for future studies in this subject.
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Xian J, Wang Y, He J, Li S, He W, Ma X, Li Q. Molecular Epidemiology and Hematologic Characterization of Thalassemia in Guangdong Province, Southern China. Clin Appl Thromb Hemost 2022; 28:10760296221119807. [PMID: 35979587 PMCID: PMC9393661 DOI: 10.1177/10760296221119807] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction: About 2% of the population in the world are carriers
of the thalassemia gene. Thalassemia is highly prevalent in Southern China, and
traditional clinical testing methods would cause missed diagnosis of partial
static thalassemia. Here, we reviewed and summarized a set of simple and
clinically feasible thalassemia detection protocols adopted by the Prenatal
Diagnosis and Reproductive Center of our hospital. Methods: From
January 1, 2015, to December 31, 2020, 31 512 peripheral blood samples and 3828
prenatal samples were collected in our study. All the peripheral blood samples
were performed through thalassemia screening by routine blood tests and
hemoglobin electrophoresis and gene detection. The prenatal diagnosis would be
implemented for the fetus if the parents were carriers of the same type of
thalassemia. Results: A total of 6137 (19.48%) cases were diagnosed
as thalassemia, in which 4749 (15.07%) were α-thalassemia, 1196 (3.80%) were
β-thalassemia and 192 (0.61%) were co-inheritance of α- and β-thalassemia. For
prenatal samples, 3160 (82.55%) cases were diagnosed as thalassemia, in which
2021 (52.80%) were α-thalassemia, 997 (26.05%) were β-thalassemia and 142
(3.71%) were co-inheritance of α- and β-thalassemia. In addition, we also found
five novel mutations, including NC_000016.9:g.223681-227492del3812; HBA1:
c.301-31_301-24delCTCGGCCCinsG; HBA2: c.95+7C>T for α-thalassemia and HBB:
c.263_276delCACTGAGTGAGCTG; HBB: c.315+143G>A for β-thalassemia.
Conclusion: The present study updates the epidemiological
characteristics and mutation spectrum of thalassemia in Southern China and
demonstrated five novel mutations. Our research provides a reference for
clinical diagnosis and treatment, prenatal diagnosis, or reproductive genetic
counseling for patients with thalassemia in Guangdong.
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Affiliation(s)
- Jiajia Xian
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
| | - Yanchao Wang
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
| | - Jianchun He
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
| | - Shaoying Li
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
| | - Wenzhi He
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
| | - Xiaoyan Ma
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
| | - Qing Li
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, 117980The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Guangzhou, Guangdong, China
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Moradi K, Aznab M, Tahmasebi S, Omidniakan L, Bijari N, Alibakhshi R. Distribution of HBB Gene Mutations in the Kurdish Population of Ilam Province, West Iran. Hemoglobin 2020; 44:244-248. [PMID: 32869674 DOI: 10.1080/03630269.2020.1797772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
β-Thalassemia (β-thal) is one of the most common diseases in Iran. Here, we report the spectrum of HBB gene mutations in 176 Kurdish β-thal carriers from the northern part of Ilam Province, Iran. The amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) technique was used to identify common β-globin gene mutations observed in Iran. Samples negative on ARMS-PCR were analyzed by direct sequencing of the β-globin gene. In total, 12 different mutations were identified on the β-globin gene. The mutations of IVS-II-1 (G>A) (HBB: c.315+1G>A), codons 8/9 (+G) (HBB: c.27_28insG), codons 36/37 (-T) (HBB: c.112delT) and IVS-I-110 (G>A) (HBB: c.93-21G>A), were the most prevalent mutations in our samples, with frequencies of 59.09, 10.80, 7.95 and 7.39%, respectively. In general, the mutation spectrum of the β-globin gene in the northern part of Ilam Province is most similar to that in other western provinces of Iran. On the other hand, due to the high prevalence of carriers and β-thal major (β-TM) patients in this province, our results can be helpful in identifying carriers as well as at-risk fetuses through the prenatal diagnosis program.
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Affiliation(s)
- Keivan Moradi
- Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mozaffar Aznab
- Department of Hematology Oncology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Susan Tahmasebi
- Medical Genetics Laboratory, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Leila Omidniakan
- Medical Genetics Laboratory, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nushin Bijari
- Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Alibakhshi
- Department of Biochemistry, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Some Determinants of Contraceptive Use Among Women at the Reproductive Age with Thalassemia Major Children in Sistan and Baluchestan Province, Iran. WOMEN’S HEALTH BULLETIN 2019. [DOI: 10.5812/whb.90092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Health-related Quality of Life and Associated Factors Among Thalassemia Major Patients, Southeast of Iran. J Pediatr Hematol Oncol 2017; 39:513-517. [PMID: 28859037 DOI: 10.1097/mph.0000000000000963] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Low quality of life (QOL) is a feature that has been overlooked in thalassemia major (TM) patients. Our aim was to assess QOL in school-aged TM patients in Zabol city and surrounding rural areas in southeast of Iran. The study was performed in 2014. QOL was evaluated using Pediatric Quality of Life Inventory 4 (PedsQL4) questionnaire addressing physical, emotional, social, and educational, along with psychological health in 80 TM patients. Also, 80 age-matched and sex-matched subjects without any chronic illness served as control group. Mean age of the patients was 11.7±4.1 years old. Total QOL scores was 51.4±13.3 in the patients. In comparison, mean value of total QOL score in controls was 91.1±3.3 (P<0.0001). Poor and moderate QOL were observed in 44.7% and 48.7% of the patients, respectively. Mean functioning scores for physical, emotional, social, educational, and psychological dimensions in the patients were 56.2±119, 69.6.4±23.3, 27.1±22.1, 52.3±18.1, and 48.9±11.8, respectively. The lowest level of QOL was related to the social field (81.3% with less than average score), while the highest QOL was related to the emotional aspect (58.8% with good QOL; >75 scores). Overall, female sex, poor compliance with chelation therapy, and residency in urban areas were significantly associated with poor QOL. In conclusion, providing a psychiatric health package seems to be essential for improving QOL in TM patients, especially in social field.
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Bazi A, Sharifi-Rad J, Rostami D, Sargazi-Aval O, Safa A. Diabetes Mellitus in Thalassaemia Major Patients: A Report from the Southeast of Iran. J Clin Diagn Res 2017; 11:BC01-BC04. [PMID: 28658748 DOI: 10.7860/jcdr/2017/24762.9806] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/03/2017] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Diabetes Mellitus (DM) represents a major concern in Thalassaemia Major (TM) patients. AIM The present study was conducted to evaluate the frequency of Impaired Fasting Glucose (IFG) and DM in TM patients in Southeast of Iran. MATERIALS AND METHODS Fasting Blood Glucose (FBS) was determined using fasting blood samples in 148 TM patients. Demographical data was collected by a questionnaire. Clinical and laboratory variables including cell blood counts, pre-transfusion Haemoglobin (Hb) level, and five-year ferritin were extracted from medical records. Statistical analysis was performed in SPSS19.0 software using chi-square, student t-test and logistic regression. RESULTS Females and males comprised 83 (56.1%) and 65 (43.9%) subjects respectively. The mean age and mean five-year ferritin were 17.3±6.1 year-old and 5060.6±2395 ng/ml respectively. Overall, 39 (26.4%) patients had IFG, while 13 (8.8%) were diagnosed with DM. Significant differences were identified in the mean age, volume of transfused blood per occasion, and mean five-years ferritin between the patients with IFG or DM and the patients with normal fasting glucose level. Patients with age >25-year-old had an increased risk of both IFG (OR=4.7,95% CI: 1.3-17, p=0.01) and DM (OR= 7.1, 95% CI: 1-49.2, p=0.04). In addition, splenectomized patients showed a higher risk for IFG (OR=4.3, 95% CI: 1.5-12.1, p=0.005), and ferritin value >6000 ng/ml were associated with an elevated risk of DM (OR=7, 95% CI: 0.8-60.1, p=0.07). CONCLUSION Our results indicated that higher age, mean five-years ferritin, volume of blood transfused per occasion, as well as splenectomy were risk factors of IFG and DM in TM patients.
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Affiliation(s)
- Ali Bazi
- Lecturer, Clinical Research Development Unit, Amir-Al-Momenin Hospital, Zabol University Medical Science, Zabol, Iran
| | - Javad Sharifi-Rad
- Research Scholar, Department of Biochemistry, Phytochemistry Research Scholar, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Daryoush Rostami
- Associate Professor, Department of Hematology, Faculty of Allied Medical Science, Zabol University Medical Science, Zabol, Iran
| | - Omolbanin Sargazi-Aval
- Lecturer, Department of Hematology, Faculty of Allied Medical Science, Zabol University Medical Science, Zabol, Iran
| | - Amin Safa
- Lecturer, Department of Immunology, Faculty of Allied Medical Science, Zabol University Medical Science, Zabol, Iran
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Miri-Moghaddam E, Bahrami S, Naderi M, Bazi A, Karimipoor M. Molecular Characterization of β-Thalassemia Intermedia in Southeast Iran. Hemoglobin 2017; 40:173-8. [PMID: 27117567 DOI: 10.3109/03630269.2016.1167735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Inheritance of mild mutations within the β-globin gene and coinheritance of α-thalassemia (α-thal) are known as two important genetic modifiers in β-thalassemia (β-thal) intermedia (β-TI). We aimed to evaluate the spectrum of β- and α-thal mutations in β-TI patients in Southeast Iran. Common β- and α-globin gene mutations were detected by amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) and multiplex gap-PCR, respectively. There were 26 male (57.8%) and 19 female (42.2%) patients. HBB: c.92 + 5T > C [IVS-I-5 (G > C)] and HBB: c.-138C + 1G > A [IVS-II-I (G > A)] represented the prevalent alleles with respective frequencies of 60.0 and 10.0%. Other β-globin mutations included HBB: c.-138C > T [-88 (C > T)], HBB: c.27_28insG [frameshift codons (FSC) 8/9 (+G)], HBB: c.46delT [codon 15 (-T)], HBB: c.93-22_95del (IVS-I, 25 del), and the 619 bp deletion (NG_000007.3: g.71609_72227del619). The predominant genotypic combinations were β(0)/β(0) (68.9%), β(0)/β(+ )(8.9%) and β(+)/β(+ )(2.2%). Coinheritance of α-thal was observed in 33.0% of the patients, with the -α(3.7) (rightward) (NG_000006.1: g.34164_37967del3804) as the most common deletion (86.0%). One patient was diagnosed with the -α(4.2) (leftward) (AF221717) and one with the - -(MED) (g.24664_41064del16401) deletions, while no patients carried the -(α)(20.5) (g.15164_37864del22701), α(-5 nt) (HBA2: c.95 + 2_95_6delTGAGG) or codon 19 (-G) (HBA2: c.56delG) mutations. The alleviating molecular mechanism was not explainable by β(+ )or concurrent α-thal in more than half of our β-TI patients. This encourages conducting more studies to identify other contributing factors, especially Hb F-inducing genetic modifiers.
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Affiliation(s)
- Ebrahim Miri-Moghaddam
- a Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences , Zahedan , Iran.,b Department of Genetics , Faculty of Medicine, Zahedan University of Medical Sciences , Zahedan , Iran
| | - Sara Bahrami
- c Department of Biology , Payame Noor University , Zahedan , Iran
| | - Majid Naderi
- d Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences , Zahedan , Iran.,e Department of Pediatric Hematology & Oncology , Faculty of Medicine, Zahedan University of Medical Sciences , Zahedan , Iran
| | - Ali Bazi
- f Faculty of Allied Medical Sciences , Zabol University of Medical Sciences , Zabol , Iran
| | - Morteza Karimipoor
- g Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran , Tehran , Iran
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Mahdieh N, Rabbani B. Beta thalassemia in 31,734 cases with HBB gene mutations: Pathogenic and structural analysis of the common mutations; Iran as the crossroads of the Middle East. Blood Rev 2016; 30:493-508. [DOI: 10.1016/j.blre.2016.07.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 06/13/2016] [Accepted: 07/08/2016] [Indexed: 12/16/2022]
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Bazi A, Miri-Moghaddam E, Moudi Z. The High Birth Rate of Thalassemia Major and the Associated Problems in Sistan and Baluchistan Province, Iran. ACTA ACUST UNITED AC 2016. [DOI: 10.17795/gct-38670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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DabbaghBagheri S, Ghadami S, Mollazadeh F, Saadat A, Zeinali S. Revisiting a Complex Rearrangement Involving a 619 Base Pairs Deletion, 6 Nucleotide Insertion Followed by a A > G Substitution Causing β°-Thalassemia. Indian J Hematol Blood Transfus 2016; 32:500-503. [PMID: 27812264 DOI: 10.1007/s12288-016-0682-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 05/09/2016] [Indexed: 11/29/2022] Open
Abstract
One of the prevalent inherited blood disorders is thalassemia syndrome that characterized by reduction (β+) or absence (β0) of β globin chain synthesis. The β globin (HBB) gene map in the short arm of chromosome 11 and most of the mutations in this gene are single nucleotide substitutions, insertions or deletions of nucleotides. Nucleotide sequence analysis of a partially deleted β-globin gene from an Iranian carrier of β-thalassemia displayed a complex rearrangement involving a 619 base pairs (bp) deletion. This rearrangement had originally been named as the 619 bp deletion and later on as the 619 bp deletion with a 7 bp insertion. In our study, using by single chain sequencing, we have shown that the actual rearrangement involves a 619 bp deletion, a 6 bp insertion followed by a G > A substitution deleting the exon 3 of the β-globin gene. This clarification has to be inserted into the relevant databases as some of them still site the original 619 bp deletion with wrong breakpoints.
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Affiliation(s)
- Samira DabbaghBagheri
- Medical Genetics Lab, Kawsar Human Genetics Research Center, No. 41 Majlesi St., ValiAsr St., Tehran, Iran
| | - Shirin Ghadami
- Department of Molecular Medicine, Biotechnology Research Center, Pasteur Institute of Iran, Pasteur St., Tehran, Iran ; Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Faeze Mollazadeh
- Medical Genetics Lab, Kawsar Human Genetics Research Center, No. 41 Majlesi St., ValiAsr St., Tehran, Iran
| | - Ameneh Saadat
- Medical Genetics Lab, Kawsar Human Genetics Research Center, No. 41 Majlesi St., ValiAsr St., Tehran, Iran
| | - Sirous Zeinali
- Department of Molecular Medicine, Biotechnology Research Center, Pasteur Institute of Iran, Pasteur St., Tehran, Iran ; Medical Genetics Lab, Kawsar Human Genetics Research Center, No. 41 Majlesi St., ValiAsr St., Tehran, Iran
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Ansari H, Ansari Moghaddam A, Mohammadi M, Peyvand M, Gorgij A, Shahraki Sanavi F. Health Status and Life Situation of Street Children in Zahedan, Southeast of Iran. HEALTH SCOPE 2015. [DOI: 10.17795/jhealthscope-31077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rajaeefard A, Hajipour M, Tabatabaee HR, Hassanzadeh J, Rezaeian S, Moradi Z, Sharafi M, Shafiee M, Semati A, Safaei S, Soltani M. Analysis of survival data in thalassemia patients in Shiraz, Iran. Epidemiol Health 2015. [PMID: 26212506 PMCID: PMC4616013 DOI: 10.4178/epih/e2015031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES The survival rate of thalassemia patients has not been conclusively established, and the factors associated with survival remain unclear. This study aimed to determine the survival rate of thalassemia among patients in southern Iran and to identify the factors associated with mortality from thalassemia. METHODS This retrospective cohort study was conducted based on a retrospective review of the medical records of 911 beta-thalassemia patients in 2014. Data analysis was conducted using the Kaplan-Meier method and Cox regression analysis. RESULTS Overall, 212 patients (23.3%) died, and 26.8% had thalassemia intermedia. The 20-year, 40-year, and 60-year survival rates were 85%, 63%, and 54%, respectively. Both crude and adjusted analyses found that education, marital status, ferritin levels, and comorbidities were related to mortality. CONCLUSIONS Sociodemographic and hematological factors were found to be significantly associated with the survival rate of thalassemia. Addressing these factors may help healthcare providers and physicians to provide the best possible care and to improve the survival rate.
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Affiliation(s)
- Abdolreza Rajaeefard
- Department of Epidemiology, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahmoud Hajipour
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamid Reza Tabatabaee
- Department of Epidemiology, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Jafar Hassanzadeh
- Department of Epidemiology, Research Centre for Health Sciences, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shahab Rezaeian
- Department of Epidemiology, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Moradi
- Department of Midwifery, School of Nursing and Midwifery, Fasa University of Medical Sciences, Fasa, Iran
| | - Mehdi Sharafi
- Center for Disease Control and Prevention, Deputy of Health Services, Fasa University of Medical Sciences, Fasa, Iran
| | - Mohsen Shafiee
- Department of Nursing, School of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Semati
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sanaz Safaei
- Islamic Azad University Khorasgan (Isfahan) Branch, Isfahan, Iran
| | - Maryam Soltani
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
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15
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Hassan SM, Harteveld CL, Bakker E, Giordano PC. Broader spectrum of β-thalassemia mutations in Oman: regional distribution and comparison with neighboring countries. Hemoglobin 2015; 39:107-10. [PMID: 25677748 DOI: 10.3109/03630269.2015.1009632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of this study was to expand and study the molecular spectrum of β-thalassemia (β-thal) mutations in Oman by examining cases from seven different regions and comparing the prevalence with neighboring countries. A total of 446 cases of β hemoglobinopathies was obtained and analyzed to determine the frequency and distribution of the different β alleles. The molecular spectrum of β-thal in Oman revealed the presence of 32 mutations from different origins and 11 alleles are reported for the first time in the Omani population. The wide heterogeneous spectrum of β-thal mutations found can be associated with the history of trade and migration as well as the past domination from other countries. The presented data will facilitate the development of a comprehensive prevention strategy in Oman.
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Affiliation(s)
- Suha M Hassan
- Molecular Genetic Laboratory, National Genetic Centre , Muscat , Sultanate of Oman and
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16
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Sargolzaie N, Miri-Moghaddam E. A Local Equation for Differential Diagnosis of β-Thalassemia Trait and Iron Deficiency Anemia by Logistic Regression Analysis in Southeast Iran. Hemoglobin 2014; 38:355-8. [DOI: 10.3109/03630269.2014.948187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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17
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Genetic epidemiology, hematological and clinical features of hemoglobinopathies in Iran. BIOMED RESEARCH INTERNATIONAL 2013; 2013:803487. [PMID: 23853772 PMCID: PMC3703361 DOI: 10.1155/2013/803487] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Accepted: 06/03/2013] [Indexed: 11/17/2022]
Abstract
There is large variation in the molecular genetics and clinical features of hemoglobinopathies in Iran. Studying structural variants of hemoglobin demonstrated that the β-chain variants of hemoglobin S and D-Punjab are more prevalent in the Fars (southwestern Iran) and Kermanshah (western Iran) provinces, respectively. Also, α-chain variants of Hb Q-Iran and Hb Setif are prevalent in western Iran. The molecular basis and clinical severity of thalassemias are extremely heterogenous among Iranians due to the presence of multiethnic groups in the country. β-Thalassemia is more prevalent in northern and southern Iran. Among 52 different β-thalassemia mutations that have been identified among Iranian populations, IVSII-1 G:A is the most frequent mutation in most parts of the country. The presence of IVS I-5 G:C mutation with high frequency in southeastern Iran might reflect gene flow from neighboring countries. A wide spectrum of α-thalassemia alleles has been detected among Iranians with -α(3.7 kb) as the most prevalent α-thalassemia mutation. The prevention program of thalassemia birth in Iran has reduced the birth rate of homozygous β-thalassemia since the implementation of the program in 1997. In this review genetic epidemiology, clinical and hematological aspects of hemoglobinopathies, and the prevention programs of β-thalassemia in Iran will be discussed.
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18
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Miri-Moghaddam E, Zadeh-Vakili A, Nikravesh A, Sistani SS, Naroie-Nejad M. Sistani population: a different spectrum of β-thalassemia mutations from other ethnic groups of Iran. Hemoglobin 2013; 37:138-47. [PMID: 23437895 DOI: 10.3109/03630269.2013.769886] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This study aimed to characterize the molecular spectrum of β-thalassemia (β-thal) mutations and evaluate the services available for prenatal diagnosis (PND) among the Sistani population of Iran. Mutations were analyzed with amplification refractory mutation system (ARMS), gap-polymerase chain reaction (gap-PCR), multiplex ligation-dependent probe amplification (MLPA) analysis and direct sequencing. Fetal diagnosis was also confirmed by linkage analysis. Over a 9-year period (2002-2011), 405 at-risk Sistani couples were referred for mutation analysis and/or PND. Of the referred couples, 18.5% had one to three affected children with β-thal major (β-TM) and the remainder had no children or were not married. Most of the couples (73.3%) lived in urban areas and the rate of consanguineous marriage was 76.8%. Twenty-one mutations were identified, of which the most frequent ones were IVS-I-5 (G>C) with a frequency of 74.1%, followed by codon 15 G>A (5.0%), codon -88 (C>T) (3.8%), IVS-II-1 (G>A) (3.4%), codons 8/9 (+G) (2.9%) and IVS-I-1 (G>T) (2.7%), which accounted for about 91.9% of the total β-thal mutations for this region. Furthermore, fetal DNA was obtained from chorionic villus sampling (CVS) for 266 pregnant women and 68 (25.5%) fetuses were diagnosed as affected. In summary, β-thal mutations are very heterogeneous and significantly different from those found in other parts of Iran and are similar to those of Pakistani and Indian populations. These results could greatly facilitate timely and accurate PND.
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Affiliation(s)
- Ebrahim Miri-Moghaddam
- Genetics of Non-Communicable Disease Research Centre, Zahedan University of Medical Sciences, Zahedan, Iran.
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19
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Miri-Moghaddam E, Zadeh-Vakili A. Profile of β-thalassemia and its prenatal diagnosis in Khorasan-e-Jonobi Province, Iran. Hemoglobin 2013; 36:456-63. [PMID: 22920564 DOI: 10.3109/03630269.2012.712928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This study was performed to determine the molecular spectrum of β-thalassemia (β-thal) mutations in at-risk couples from Khorasan-e-Jonobi Province in East Iran. During the past 9 years, 106 couples were referred to our Center for detection of their β-thal carrier status. Samples were initially tested for the most common Iranian α- and β-thal mutations by gap-polymerase chain reaction (gap-PCR) and amplification refractory mutation system (ARMS)-PCR, respectively. In cases with negative results, direct DNA sequencing was used to identify additional β-globin mutations. Fetal DNA was obtained from chorionic villus sampling (CVS) (n = 55), 47.2% were referred during pregnancy and 23.0% of couples underwent more than one prenatal diagnosis (PND). Of the 14 mutations that were detected in Khorasan-e-Jonobi Province, Iran, the IVS-I-5 (G>C) and codon 44 (-C) mutations were the most frequently identified variants, representing 45.9 and 24.8% of the total; these were followed by three mutations in the following order: -88 (C >T) (5.3%); codons 8/9 (+G), a rare mutation, and codons 37/38/39 [-7 nucleotides (nts)], each with a frequency of 4.5%. These findings provide complementary information on the region specific profile of β-thal in eastern Iran.
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Affiliation(s)
- Ebrahim Miri-Moghaddam
- Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
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20
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Prevalence and molecular identification of the mediterranean variant among G6PD-deficient Sistani and Balouch males in Southeastern Iran. Biochem Genet 2012; 51:131-8. [PMID: 23108800 DOI: 10.1007/s10528-012-9548-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 07/23/2012] [Indexed: 10/27/2022]
Abstract
To determine the prevalence of G6PD deficiency and a Mediterranean mutation among males in southeastern Iran, we studied 1,097 Sistani and Balouch schoolboys. A questionnaire was used to collect demographic data and a history of malaria infection; blood samples were evaluated for G6PD deficiency and the G6PD Mediterranean mutation. Of the 1,097 boys screened, 175 were G6PD deficient (5.8 % of the Sistani boys and 19.3 % of the Balouch boys). The malaria survey indicated that among Balouch subjects, malaria infection was about 14 times that of Sistani subjects. Molecular characterization of G6PD-deficient samples revealed a general frequency of 85.1 % for the Mediterranean variant among all subjects (75 % among Sistani and 86.2 % among Balouch cases). The high prevalence of G6PD deficiency among Balouch populations confirms the hypothesis that the distribution of G6PD deficiency is concordant with the geographic distribution of malaria.
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