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Lin XM, Jiang F, Li J, Li DZ. Dominantly Inherited β-Thalassemia Caused by a Single Nucleotide Deletion in Exon 3 of the β-Globin Gene: Hb Xiangyang ( HBB: c.393delT). Hemoglobin 2022; 46:253-255. [PMID: 35686459 DOI: 10.1080/03630269.2022.2072325] [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: 11/04/2022]
Abstract
We report a de novo frameshift mutation in exon 3 of the β-globin gene that leads to a β-thalassemia (β-thal) intermedia (β-TI) phenotype in a 6-year-old Chinese boy. This novel mutation with deletion of the last nucleotide (-T) at codon 130 results in a β-globin chain that is extended to 156 amino acid residues. This study highlights the importance of considering dominantly inherited β-thal in the investigation of anemia, even in patients with ethnic backgrounds not usually associated with β-thal and hematologically normal parents.
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Affiliation(s)
- Xiao-Mei Lin
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center affiliated to Guangzhou Medical University, Guangzhou, Guangdong Province, People's Republic of China
| | - Fan Jiang
- 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
| | - 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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Cannata M, Cassarà F, Vinciguerra M, Licari P, Passarello C, Leto F, Lo Pinto C, Pitrolo L, Ganci R, Maggio A, Giambona A. Double Heterozygosity for Hb Durham-N.C. ( HBB: c.344T>C) [β114(G16)Leu→Pro] and the IVS-I-110 ( HBB: c.93-21G>A) Causing a Severe β-Thalassemia Phenotype. Hemoglobin 2019; 43:210-213. [PMID: 31456457 DOI: 10.1080/03630269.2019.1655030] [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
The evaluation of a 10-month-old girl of Sicilian origin with a clinical phenotype of severe thalassemia led to the identification of two β-globin gene defects, a β-thalassemia (β-thal), mutation at IVS-I-110 (HBB: c.93-21G>A) and a variant hemoglobin (Hb) mutation at codon 114 (HBB: c.344T>C) on the other allele, reported as Hb Durham-N.C. (also known as Hb Brescia) [β114(G16)Leu→Pro] in the HbVar database. A very low Hb level (Hb 3.5 g/dL), microcytosis [mean corpuscular volume (MCV) 63.2 fL] and hypocromia [mean corpuscular Hb (MCH) 19.6 pg], increased red blood cell (RBC) distribution width (RDW) (36.0%), higher reticulocytes (6.2%), anisocytosis, poikilocytosis, hypocromia, basophilic stippling and inclusion body formation, were present in the affected subject. Analysis of other family components showed the presence of HBB: c.93-21G>A defect in the mother and in her brother, while Hb Durham-N.C. was absent in all other relatives, thus, this mutation has arisen as a de novo defect. This is the first case described as a severe thalassemic phenotype in a compound heterozygote carrier of this unstable Hb and a common β-thalassemic allele. The important information gained from this case is that a rare dominant or recessive mutation may arise in every individual, even if this is a very rare event.
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Affiliation(s)
- Monica Cannata
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Filippo Cassarà
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Margherita Vinciguerra
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Paola Licari
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Cristina Passarello
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Filippo Leto
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Carmen Lo Pinto
- Department of Pediatrics, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Lorella Pitrolo
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Riccardo Ganci
- Department of Pediatrics, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Aurelio Maggio
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
| | - Antonino Giambona
- Department of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of rare Diseases, Villa Sofia-Cervello Hospital , Palermo , Italy
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Jo I, Jang W, Chae H, Kim SY, Kim M, Kim Y, Han K. Hemoglobin Kansas: First Korean Family and Literature Review. Ann Lab Med 2019; 37:352-354. [PMID: 28445020 PMCID: PMC5409020 DOI: 10.3343/alm.2017.37.4.352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/30/2016] [Accepted: 03/07/2017] [Indexed: 11/19/2022] Open
Affiliation(s)
- Irene Jo
- Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Woori Jang
- Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyojin Chae
- Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - So Young Kim
- Department of Pediatrics, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Myungshin Kim
- Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
| | - Yonggoo Kim
- Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kyungja Han
- Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Traeger-Synodinos J, Harteveld CL. Preconception carrier screening and prenatal diagnosis in thalassemia and hemoglobinopathies: challenges and future perspectives. Expert Rev Mol Diagn 2017; 17:281-291. [DOI: 10.1080/14737159.2017.1285701] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Joanne Traeger-Synodinos
- Department of Medical Genetics, National and Kapodistrian University of Athens, St. Sophia’s Children’s Hospital, Athens, Greece
| | - Cornelis L. Harteveld
- Department of Clinical Genetics, Laboratory for Diagnostic Genome Analysis (LDGA), Leiden, The Netherlands
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Farashi S, Rad F, Shahmohammadi B, Imanian H, Azarkeivan A, Najmabadi H. First Report of a Dominantly Inherited β-Thalassemia Caused by a Novel Elongated β-Globin Chain. Hemoglobin 2016; 40:102-7. [DOI: 10.3109/03630269.2015.1135445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
Beta-thalassemia is uncommon in the Korean population, however it must be considered in the differential diagnosis of hypochromic anemia. The molecular characterization of beta-thalassemia is absolutely necessary for molecular diagnosis as well as any genetic epidemiological study in this region. We analyzed the molecular basis of beta-thalassemia in 47 Korean families. Using direct sequencing of genomic DNA amplified through PCR and haplotype analysis, 44 beta-thalassemia genes were characterized, all of which were heterozygous. Fourteen different mutations were identified. The common mutations noted included the initiation codon (CD) ATG-->AGG (23.4%), CD 17 A-->T (21.2%), and IVS-II-1 G-->A (12.7%). Interestingly, mutations causing dominantly inherited beta-thalassemia were common (17.0%). All cases of IVS-II-1 G-->A mutations were linked to the silent mutation of CD 91 C-->T of the -globin gene. The initiation CD ATG-->AGG and IVS-II-1 G-->A with CD 91 C-->T were found in the Far East only, and may be inherited from a common origin for each mutation, at least in Koreans. CD17 A-->T and CDs 41/42-TTCT were suggested to be introduced by gene-flow from southern China. Otherwise, Hb Korea, CDs 89/90 -GT and a novel beta-thalassemia mutation, CD 131 CAG-->TAG, were only identified in Koreans. This mutation spectrum is characteristic of the low prevalent area of beta-thalassemia, however it is quite different even from the adjacent countries, Japan or China.
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Affiliation(s)
- Sung Sup Park
- Department of Clinical Pathology, Seoul National University College of Medicine, Korea
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Park SS, Lee YJ, Kim JY, Joo SI, Hattori Y, Ohba Y, Cho HI. Beta-thalassemia in the Korean population. Hemoglobin 2002; 26:135-45. [PMID: 12144056 DOI: 10.1081/hem-120005451] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Beta-Thalassemia is uncommon in the Korean population, however, it must be considered in the differential diagnosis of hypochromic anemia. The molecular characterization of beta-thalassemia is absolutely necessary for molecular diagnosis as well as any genetic epidemiological study in this region. We analyzed the molecular basis of beta-thalassemia in 38 Korean families. Using direct sequencing of genomic DNA amplified through polymerase chain reaction and haplotype analysis, 35 beta-thalassemic genes were characterized, all of which were heterozygous. Twelve different mutations were identified. The most common mutations noted included the initiation codon ATG-->AGG (beta0) (28.9%), codon 17 (beta0) (A-->T) (18.4%), and IVS-II-1 (beta0) (G-->A) (10.5%). Interestingly, mutations causing dominantly inherited beta-thalassemia were also common (15.7%). All four cases with the IVS-II-1 (G-->A) mutation were linked to the silent mutation of codon 91 (C-->T) of the beta-globin gene. The initiation codon A7G-->AGG and IVS-II-1 (G-->A) with codon 91 (C-->T) mutations were found in the Far East only, and may be inherited from a common origin for each mutation, at least in Koreans. The codon 17 (A-->T) and codons 41/42 (beta0) (-TTCT) were suggested to be introduced by gene-flow from southern China. Otherwise, only Hb Korea [codons 33/34 (beta0) (-GTG)] and a novel beta-thalassemic mutation, codons 89/90 (beta0) (-GT), were identified in Koreans. This mutation spectrum is characteristic of the low prevalence area of beta-thalassemia in Korea, it is, however, quite different from the adjacent countries, Japan and China.
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Affiliation(s)
- Sung Sup Park
- Department of Clinical Pathology, Seoul National University College of Medicine, Seoul National University Hospital Clinical Research Institute, Korea
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