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Zhao H, Du C, Yang G, Wang Y. Diagnosis, treatment, and research status of rare diseases related to birth defects. Intractable Rare Dis Res 2023; 12:148-160. [PMID: 37662624 PMCID: PMC10468410 DOI: 10.5582/irdr.2023.01052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/17/2023] [Accepted: 08/22/2023] [Indexed: 09/05/2023] Open
Abstract
Rare diseases are diseases that occur at low prevalence, and most of them are chronic and serious diseases that are often life-threatening. Currently, there is no unified definition for rare diseases. The diagnosis, treatment, and research of rare diseases have become the focus of medicine and biopharmacology, as well as the breakthrough point of clinical and basic research. Birth defects are the hard-hit area of rare diseases and the frontiers of its research. Since most of these defects have a genetic basis, early screening and diagnosis have important scientific value and social significance for the prevention and control of such diseases. At present, there is no effective treatment for most rare diseases, but progress in prenatal diagnosis and screening can prevent the occurrence of diseases and help prevent and treat rare diseases. This article discusses the progress in genetic-related birth defects and rare diseases.
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Affiliation(s)
- Hongjuan Zhao
- Department of Gynecology and Obstetrics, Shandong Provincial Third Hospital, Shandong University, Ji'nan, China
| | - Chen Du
- Department of Gynecology and Obstetrics, Inner Mongolia Medical University Affiliated Hospital, Hohhot, China
| | - Guang Yang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Wang
- Department of Gynecology and Obstetrics, Inner Mongolia Medical University Affiliated Hospital, Hohhot, China
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Labarque V, Mancuso ME, Kartal-Kaess M, Ljung R, Mikkelsen TS, Andersson NG. F8/F9 variants in the population-based PedNet Registry cohort compared with locus-specific genetic databases of the European Association for Haemophilia and Allied Disorders and the Centers for Disease Control and Prevention Hemophilia A or Hemophilia B Mutation Project. Res Pract Thromb Haemost 2023; 7:100036. [PMID: 36798899 PMCID: PMC9926204 DOI: 10.1016/j.rpth.2023.100036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/11/2022] [Accepted: 12/17/2022] [Indexed: 01/11/2023] Open
Abstract
Background Hemophilia A and B are caused by variants in the factor (F) VIII or FIX gene. Selective reporting may influence the distribution of variants reported in genetic databases. Objectives To compare the spectrum of F8 and F9 variants in an international population-based pediatric cohort (PedNet Registry) with the spectrum found in the European Association for Haemophilia and Allied Disorders (EAHAD) and the Centers for Disease Control and Prevention Hemophilia A or Hemophilia B Mutation Project (CHAMP/CHBMP) databases. Methods All patients registered in the PedNet Registry on January 1, 2021 were included in this study. As comparators, data from patients with severe hemophilia included in the CHAMP/CHBMP registry (US center data) and EAHAD were used. Results Genetic information was available for 1941 patients. Intron 22 inversion was present in 52% of patients with severe hemophilia A; frameshift (36%), missense (28%), and nonsense (20%) were the most frequent variants in patients with severe hemophilia A who were inversion-negative. The most frequent variants in severe hemophilia B were missense (48%). In nonsevere disease, most variants were missense variants (moderate hemophilia A: 91%; mild hemophilia A: 95%, moderate and mild hemophilia B: 86% each). Comparison with the databases demonstrated a higher proportion of missense variants associated with severe hemophilia B in EAHAD (68%) than in PedNet (48%) and CHBMP (46%). Conclusion The PedNet population-based cohort provides an alternative to the established databases, which collect data by selective reporting, as it is a well-maintained database covering the full spectrum of pathogenic F8 and F9 variants, and indicates the number of patients affected by each particular variant.
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Affiliation(s)
- Veerle Labarque
- Department of Paediatrics, Paediatric Haematology and Oncology, University Hospitals Leuven, Leuven, Belgium,Correspondence Veerle Labarque, Department of Paediatrics, Paediatric Haematology and Oncology, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium.
| | - Maria Elisa Mancuso
- Center for Thrombosis and Hemorrhagic Diseases, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy,Humanitas University, Rozzano, Milan, Italy
| | - Mutlu Kartal-Kaess
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, Inselspital, University Hospital, University of Bern, Bern, Switzerland
| | - Rolf Ljung
- Department of Clinical Sciences and Paediatrics, Lund University, Lund, Sweden
| | - Torben S. Mikkelsen
- Department of Paediatric Oncology and Haematology, University Hospital, Aarhus, Denmark
| | - Nadine G. Andersson
- Department of Clinical Sciences and Paediatrics, Lund University, Lund, Sweden,Centre for Thrombosis and Haemostasis, Skåne University Hospital, Lund, Sweden
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Owaidah T, Bakr S, Al-Numair N, AbaAlkhail H, Alzahrani H, Saleh M, Khogeer H, Tarawah A, Akkad H, Al-Allaf F. Genotype Hemophilia Screening Program Identified 2 Novel Variants Including a Novel Variant (c.5816-2A > G) Causing a Pathogenic Variant of the Factor 8 Gene. Clin Appl Thromb Hemost 2023; 29:10760296231182410. [PMID: 37525882 PMCID: PMC10395182 DOI: 10.1177/10760296231182410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/17/2023] [Accepted: 05/30/2023] [Indexed: 08/02/2023] Open
Abstract
Establishing a national screening program for hemophilia patients is highly encouraged by the World Health Organization and the World Federation of Hemophilia. Hence, this study aimed to analyze the variant spectrum of F8 and F9 genes in Arab hemophilia patients. Molecular genetic and sequencing studies were performed on a cohort of 135 Saudi hemophilia patients. Out of all screened hemophilia patients (97 hemophilia A and 39 hemophilia B), 15 (11.1%) were positive for inversion 22 and 4 (3%) for inversion 1. Out of a total of 32 (23.7%) substitution/deletion mutations, 2 novel variants were identified: a novel splice acceptor site missense mutation (c.5816-2A > G) causing a pathogenic variant of the F8 gene and another splicing site point mutation in intron/exon 23 (g.164496G > A). The frequent F8 variants were (c.409A > C, p.T137P) in exon 4, (c.760A > G) in exon 6, and (c.1835G > C, p.R612P) in exon 12, while the frequent F9 variants were (c.580A > G) in exon 6 and (c.880C > T) in exon 8. These study data will enrich the spectrum of the genetic databases in the Arab population that could be applied in the future for national genetic counseling.
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Affiliation(s)
- Tarek Owaidah
- Department of Pathology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Salwa Bakr
- Department of Clinical Pathology/Hematology, Faculty of Medicine, Fayoum University, Fayoum, Egypt
| | - Nouf Al-Numair
- Centre for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Hala AbaAlkhail
- Department of Pathology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Hazzaa Alzahrani
- Department of Adult Hematology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Mahasen Saleh
- Department of Pediatric Hematology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Haitham Khogeer
- Department of Pathology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Ahmed Tarawah
- Madinah Hereditary Blood Disorders Center, Department of Pediatric Hematology, King Salman Medical City, Madinah, Saudi Arabia
| | - Hadeel Akkad
- Department of Hematology, National Blood Center, Riyadh, Saudi Arabia
| | - Faisal Al-Allaf
- Department of Medical Genetics, Umm Al-Qura University Faculty of Medicine, Makkah, Saudi Arabia
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GÖK V, ÜNAL E. Comprehensive approach to hemophilia. J Health Sci Med / JHSM 2022. [DOI: 10.32322/jhsm.1108174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Hemophilia A, B are X-linked recessive bleeding disorder that typically results from a deficiency of clotting factor VIII (FVIII) and factor IX (FIX). The severity of the disease is determined according to the FVIII and FIX levels. Hemophilia A and B have similar symptoms and are both characterized by bleeding, particularly in large joints such as ankles, knees, elbows. Recurrent bleeding in joints eventually causes progressive hemophilic arthropathy. Life-threatening hemorrhages may occur rarely. Treatment of hemophilia has improved significantly in recent years with clotting factor concentrates. The average life expectancy was
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Mosaad RM, Amr KS, Rabie EA, Mostafa NO, Habib SA, El-Kamah GY. Genomic alterations in the F8 gene correlating with severe hemophilia A in Egyptian patients. Mol Genet Genomic Med 2020; 9:e1575. [PMID: 33342086 PMCID: PMC8077131 DOI: 10.1002/mgg3.1575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 11/02/2020] [Accepted: 11/20/2020] [Indexed: 11/30/2022] Open
Abstract
Background Hemophilia A (HA) is an inherited X‐linked recessive coagulation disorder caused by factor VIII (F8) deficiency. F8 rearrangements involving intron 22 (int22) and intron 1 (int1) account for almost half of severe HA phenotype also a hotspot exon 14 provides numerous mutational patterns. This study aims to identify F8 gene mutations among Egyptian HA patients. Methods DNA samples from 60 HA patients were screened for int22 and int1 rearrangements using simplified inverse shifting PCR (IS‐PCR) followed by exon 14 sequencing. Also, four uncharacterized patients were studied by targeted exome sequencing. Results In 33.3% of the studied patients, we identified three int22 rearrangements, three exon 14 mutations (two frameshift; one novel (NM_000132.3:c.2734_2735delAA, p.(N912Ffs*6)), a second reported mutation (NM_000132.3:c.3091_3094delAGAA, p.(K1031Lfs*9)), and one nonsense mutation (NM_000132.3:c.2440C>T, p.(R814*)). All identified mutations were detected in patients with severe HA phenotype. Targeted exome sequencing could not detect any known pathogenic variants. Conclusion Intron 22 rearrangement and exon 14 mutations correlate with most severe hemophilia A Egyptian patients.
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Affiliation(s)
- Rehab M Mosaad
- Molecular Genetics and Enzymology Department, Human Genetics and Genome Research Division (HGGR), National Research Centre (NRC), Cairo, Egypt
| | - Khalda S Amr
- Medical Molecular Genetics, HGGR, NRC, Cairo, Egypt
| | - Eman A Rabie
- Medical Molecular Genetics, HGGR, NRC, Cairo, Egypt.,Biotechnology Program, School of Sciences and Engineering, The American University in Cairo (AUC), Cairo, Egypt
| | - Naglaa O Mostafa
- Department of Hematology, Pediatric Hospital, Cairo University, Cairo, Egypt
| | - Sonia A Habib
- Department of Pediatrics, Medical Division, NRC, Cairo, Egypt
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Nasirnejad Sola F, Morovvati S, Sabetghadam Moghadam M, Entezari M. Mutation detection and inhibitor risk in Iranian patients with Hemophilia A: Six novel mutations. Clin Case Rep 2020; 8:2976-2985. [PMID: 33363863 PMCID: PMC7752620 DOI: 10.1002/ccr3.3294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 07/19/2020] [Accepted: 08/11/2020] [Indexed: 01/21/2023] Open
Abstract
This investigation facilitates a better understanding of inhibitor development, the critical treatment morbidity in HA patients. Furthermore, six novel mutations are reported, which would expand the mutation spectrum of the F8 gene.
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Affiliation(s)
- Farzaneh Nasirnejad Sola
- Department of GeneticsFaculty of Advanced Sciences and TechnologyIslamic Azad University of Medical SciencesTehranIran
| | - Saeid Morovvati
- Human Genetic Research CenterBaqiyatallah University of Medical SciencesTehranIran
| | - Mitra Sabetghadam Moghadam
- Department of GeneticsFaculty of Advanced Sciences and TechnologyIslamic Azad University of Medical SciencesTehranIran
| | - Malihe Entezari
- Department of GeneticsFaculty of Advanced Sciences and TechnologyIslamic Azad University of Medical SciencesTehranIran
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