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AitRaise I, Amalou G, Bakhchane A, Bousfiha A, Abdelghaffar H, Majida C, Bonnet C, Petit C, Barakat A. Homozygous Missense Variants in FOXI1 and TMPRSS3 Genes Associated with Non-syndromic Deafness in Moroccan Families. Biochem Genet 2023:10.1007/s10528-023-10515-5. [PMID: 37777971 DOI: 10.1007/s10528-023-10515-5] [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] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/05/2023] [Indexed: 10/03/2023]
Abstract
One of the most prevalent sensorineural disorders, autosomal recessive non-syndromic hearing loss (ARNSHL) which can affect all age groups, from the newborn (congenital) to the elderly (presbycusis). Important etiologic, phenotypic, and genotypic factors can cause deafness. So far, the high genetic variability that explains deafness makes molecular diagnosis challenging. In Morocco, the GJB2 gene is the primary cause of non-syndromic hereditary deafness, while the existence of a variant in the LRTOMT gene is the second cause of this condition. After excluding these two frequently occurring GJB2 and LRTOMT variants, whole-exome sequencing was carried out in two Moroccan consanguineous families with hearing loss. As a result, two novel variants in the TMPRSS3 (c.1078G>A, p. Ala 360Thr) and FOXI1 (c.6C>G, p. Ser 2Arg) genes have been discovered in deaf patients and the pathogenic effect has been anticipated by several bioinformatics and molecular modeling systems. For the first time, these variants are identified in the Moroccan population, showing the population heterogeneity and demonstrating the value of the WES in hearing loss diagnosis.
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Affiliation(s)
- Imane AitRaise
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratory of Biochemistry, Environment and Agri-food, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ghita Amalou
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amale Bousfiha
- Laboratory of Physiopathology and Molecular Genetics, Ben M'sik Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratory of Biochemistry, Environment and Agri-food, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Charif Majida
- Genetics and Immuno-cell Therapy Team, Mohammed First University, Oujda, Morocco
| | - Crystel Bonnet
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, 75012, Paris, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, 75012, Paris, France
- Collège de France, 75005, Paris, France
| | - Abdelhamid Barakat
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.
- Genomics and Human Genetics Laboratory, Département de Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
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Benhsaien I, Essadssi S, Elkhattabi L, Bakhchane A, Abdelghaffar H, Bousfiha AA, Badou A, Barakat A. Omenn syndrome caused by a novel homozygous mutation in recombination activating gene 1. Immunobiology 2021; 226:152090. [PMID: 33964732 DOI: 10.1016/j.imbio.2021.152090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/21/2020] [Revised: 02/12/2021] [Accepted: 03/29/2021] [Indexed: 11/20/2022]
Abstract
Omenn syndrome (OS) is a type of severe combined immunodeficiency (SCID) that is distinguished by, lymphadenopathy, hepatosplenomegaly, erythroderma, alopecia with normal to elevated T-cell counts, eosinophilia, and elevated serum IgE levels. Recombination activation gene (RAG) 1 or RAG2 mutations that result in partial V(D)J recombination activity are known to be the main cause of OS. Other genes (DCLRE1C, LIG4, IL7RA, common gamma chain, ADA, RMRP, and CHD7) have also been linked to OS, although with low frequency. Here, we report a two-month-old Moroccan girl from consanguineous marriage with chronic diarrhea, recurrent and opportunistic infections, failure to thrive, desquamative erythroderma, hepatosplenomegaly, and axillary lymphadenitis. The immunological assessment showed normal lymphocyte and NK cell counts but an absence of B cells, agammaglobulinemia contrasting with a high level of IgE. On the other hand, Sanger sequencing of RAG1 and RAG2 exon 2 regions revealed a new homozygous deleterious mutation in the RAG1 gene. This c.1184C > T mutation caused a change from Proline to Leucine at position 395 of the protein, leading to a partial loss of function. Early and rapid diagnosis of the disease may facilitate urgent life-saving treatment.
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Affiliation(s)
- Ibtihal Benhsaien
- Clinical Immunology Unit, Infectious Disease Department, Children Hospital, Ibn Rochd University Hospital, Casablanca, Morocco; Cellular and Molecular Pathology Laboratory, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco; Clinical Immunology, Autoimmunity and Inflammation Laboratory (LICIA), Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Soukaina Essadssi
- Laboratory of Genomics and Human Genetics,Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360 Casablanca, Morocco; Laboratory of Biosciences, Integrated and Molecular Functional Exploration (LBEFIM), Faculty of Science and Technology of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Lamiae Elkhattabi
- Laboratory of Genomics and Human Genetics,Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360 Casablanca, Morocco
| | - Amina Bakhchane
- Laboratory of Genomics and Human Genetics,Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360 Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratory of Biosciences, Integrated and Molecular Functional Exploration (LBEFIM), Faculty of Science and Technology of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ahmed Aziz Bousfiha
- Clinical Immunology Unit, Infectious Disease Department, Children Hospital, Ibn Rochd University Hospital, Casablanca, Morocco; Clinical Immunology, Autoimmunity and Inflammation Laboratory (LICIA), Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Abdallah Badou
- Cellular and Molecular Pathology Laboratory, Faculty of Medicine and Pharmacy, Hassan II University, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics,Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360 Casablanca, Morocco.
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Essadssi S, Benhsaien I, Bakhchane A, Charoute H, Abdelghaffar H, Bousfiha AA, Barakat A. A Homozygous RAG1 Gene Mutation in a Case of Combined Immunodeficiency: Clinical, Molecular, and Computational Analysis. Hum Hered 2020; 84:272-278. [PMID: 33075768 DOI: 10.1159/000510062] [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] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 07/09/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The recombination-activating gene 1 and 2 (RAG1/RAG2) proteins are essential to initiate the V(D)J recombination process, the result is a diverse repertoire of antigen receptor genes and the establishment of the adaptive immunity. RAG1 mutations can lead to multiple forms of combined immunodeficiency. METHODS In this report, whole exome sequencing was performed in a Moroccan child suffering from combined immunodeficiency, with T and B lymphopenia, autoimmune hemolytic anemia, and cytomegalovirus (CMV) infection. RESULTS After filtering data and Sanger sequencing validation, one homozygous mutation c.2446G>A (p.Gly816Arg) was identified in the RAG1 gene. CONCLUSION This finding expands the spectrum of immunological and genetic profiles linked to RAG1 mutation, it also illustrates the necessity to consider RAG1 immunodeficiency in the presence of autoimmune hemolytic anemia and CMV infection, even assuming the immunological phenotype appears more or less normal.
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Affiliation(s)
- Soukaina Essadssi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratory of Biosciences, Integrated and Molecular Functional Exploration (LBEFIM), Faculty of Science and Technology of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ibtihal Benhsaien
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
| | - Amina Bakhchane
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratory of Biosciences, Integrated and Molecular Functional Exploration (LBEFIM), Faculty of Science and Technology of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ahmed Aziz Bousfiha
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco,
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Bousfiha A, Riahi Z, Elkhattabi L, Bakhchane A, Charoute H, Snoussi K, Bonnet C, Petit C, Barakat A. Further Evidence for the Implication of the MET Gene in Non-Syndromic Autosomal Recessive Deafness. Hum Hered 2019; 84:109-116. [PMID: 31801140 DOI: 10.1159/000503450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/18/2019] [Indexed: 11/19/2022] Open
Abstract
Mutations in the mesenchymal epithelial transition factor (MET) gene are frequently associated with multiple human cancers but can also lead to human non-syndromic autosomal recessive deafness (DFNB97). In the present study, we identified a novel homozygous missense mutation in the METgene causing a non-syndromic hearing impairment DFNB97 form. Whole-exome sequencing was performed to determine the genetic causes of hearing loss in a Moroccan consanguineous family with an affected daughter. The structural analysis of native and mutant in the SEMA domain of the MET receptor was investigated using a molecular dynamics simulation (MDS) approach. We identified a novel pathogenic homozygous c.948A>G (p.Ile316Met) mutation in the MET gene in one deaf Moroccan young girl carrying a total bilateral non-syndromic hearing impairment. The results of the MDS approach show that an Ile316Met mutation in the SEMA domain leads to protein flexibility loss. This may produce a major impact on the structural conformation of the MET receptor, which also affects the function and binding site of the receptor. This is the first time that a mutation in the MET gene is described in a Moroccan family. Moreover, this study reports the second family in the world associating deafness and mutation in the MET gene.
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Affiliation(s)
- Amale Bousfiha
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de Physiopathologie et Génétique Moléculaire, Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Morocco
| | - Zied Riahi
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Lamiae Elkhattabi
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Khalid Snoussi
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Crystel Bonnet
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Christine Petit
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France.,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Collège de France, Paris, France
| | - Abdelhamid Barakat
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco,
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Naasse Y, Bakhchane A, Charoute H, Jennane F, Bignon-Topalovic J, Malki A, Bashamboo A, Barakat A, Rouba H, McElreavey K. A Novel Homozygous Missense Mutation in the FU-CRD2 Domain of the R-spondin1 Gene Associated with Familial 46,XX DSD. Sex Dev 2017; 11:269-274. [PMID: 29262419 DOI: 10.1159/000485393] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2017] [Indexed: 11/19/2022] Open
Abstract
R-spondin proteins are secreted agonists of canonical WNT/β-catenin signaling. Homozygous RSPO1 mutations cause a syndrome of 46,XX disorder of sexual development (DSD), palmoplantar keratoderma (PPK), and predisposition to squamous cell carcinoma. We report exome sequencing data of two 46,XX siblings, one with testicular DSD and the other with suspected ovotesticular DSD. Both have PPK and hearing impairment and carried a novel homozygous mutation c.332G>A (p.Cys111Tyr) located in the highly conserved furin-like cysteine-rich domain-2 (FU-CRD2). Cysteines in the FU-CRDs are strictly conserved, indicating their functional importance in WNT signaling through interaction with the leucine-rich repeat-containing G-protein-coupled receptors. This is the first RSPO1 missense mutation reported in association with human disease.
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Affiliation(s)
- Yassine Naasse
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
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Kindil Z, Senhaji MA, Bakhchane A, Charoute H, Chihab S, Nadifi S, Barakat A. Genetic investigation of XPA gene: high frequency of the c.682C>T mutation in Moroccan XP patients with moderate clinical profile. BMC Res Notes 2017; 10:704. [PMID: 29208038 PMCID: PMC5718079 DOI: 10.1186/s13104-017-3042-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 06/15/2017] [Accepted: 11/30/2017] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE Xeroderma pigmentosum (XP) is a genetically and clinically heterogeneous disease, associated with an inherited defect in one of eight different genes (XPA to XPG and XPV). In addition to the early onset of the skin manifestations, the XP group A is marked by the presence of a mild to severe neural disorders which appear tardily and worsens with age. In this study, 9 patients with moderate clinical profile belonging to 6 XP families were recruited to determine the XPA mutational spectrum in Morocco, using the direct sequencing of the whole coding region of the XPA gene. RESULTS The genetic investigation of the XPA gene showed that 7 from 9 patients were homozygous for the c.682C>T, p.Arg228X mutation, while all their investigated family members were heterozygous. The frequency of this mutation was estimated to be 83.33% (5/6 families) .The molecular analysis of the 5 other exons of the XPA gene, showed that the 2 negative siblings carried no mutation in the XPA gene. This finding suggests that c.682C>T (p.Arg228X) mutation is relatively associated with moderate phenotype in XP group A Moroccan families; this result will also contribute to improve the molecular diagnosis of XP disease in Moroccan patients.
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Affiliation(s)
- Zineb Kindil
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco.,Laboratory of Genetics and Molecular Pathology, Faculty of Medicine, Hassan II University, Casablanca, Morocco
| | - Mohamed Amine Senhaji
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Soumia Chihab
- Department of Dermatology, Hospital University Ibn Rochd, Casablanca, Morocco
| | - Sellama Nadifi
- Laboratory of Genetics and Molecular Pathology, Faculty of Medicine, Hassan II University, Casablanca, Morocco
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco.
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Salime S, Charif M, Bousfiha A, Elrharchi S, Bakhchane A, Charoute H, Kabine M, Snoussi K, Lenaers G, Barakat A. Homozygous mutations in PJVK and MYO15A genes associated with non-syndromic hearing loss in Moroccan families. Int J Pediatr Otorhinolaryngol 2017; 101:25-29. [PMID: 28964305 DOI: 10.1016/j.ijporl.2017.07.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 03/21/2017] [Revised: 07/19/2017] [Accepted: 07/19/2017] [Indexed: 01/03/2023]
Abstract
OBJECTIVES Autosomal recessive non-syndromic hearing loss is a heterogeneous disorder and the most prevalent human genetic sensorineural defect. In this study, we investigated the geneticcause of sensorineural hearing loss in Moroccan patients and presented the importance of whole exome sequencing (WES) to identify candidate genes in two Moroccan families with profound deafness. METHODS After excluding mutations previously reported in Moroccan deaf patients, whole exome sequencing was performed and Sanger sequencing was used to validate mutations in these genes. RESULTS Our results disclosed the c.113_114insT (p.Lys41GlufsX8) and c.406C > T (p.Arg130X) homozygous mutations in PJVK and a homozygous c.5203C > T (p.Arg1735Trp) mutation in MYO15A, both genes responsible for non-syndromic recessive hearing loss DFNB59 and DFNB3, respectively. CONCLUSION We identified in Moroccan deaf patients two mutations in PJVK and one mutation in MYO15A described for the first time in association with non-syndromic recessive hearing loss. These results emphasize that whole exome sequencing is a powerful diagnostic strategy to identify pathogenic mutations in heterogeneous disorders with many various causative genes.
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Affiliation(s)
- Sara Salime
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; Laboratoire de santé et Environnement, Université Hassan II, Faculté des Sciences Aïn Chock, Casablanca, Morocco
| | - Majida Charif
- MitoLab Team, CNRS UMR6015, INSERM U1083, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933 Angerscedex 9, France
| | - Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Soukaina Elrharchi
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Mostafa Kabine
- Laboratoire de santé et Environnement, Université Hassan II, Faculté des Sciences Aïn Chock, Casablanca, Morocco
| | - Khalid Snoussi
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Guy Lenaers
- MitoLab Team, CNRS UMR6015, INSERM U1083, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933 Angerscedex 9, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.
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Bousfiha A, Bakhchane A, Charoute H, Detsouli M, Rouba H, Charif M, Lenaers G, Barakat A. Novel compound heterozygous mutations in the GPR98 (USH2C) gene identified by whole exome sequencing in a Moroccan deaf family. Mol Biol Rep 2017; 44:429-434. [PMID: 28951997 DOI: 10.1007/s11033-017-4129-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 09/19/2017] [Indexed: 01/26/2023]
Abstract
In the present work, we identified two novel compound heterozygote mutations in the GPR98 (G protein-coupled receptor 98) gene causing Usher syndrome. Whole-exome sequencing was performed to study the genetic causes of Usher syndrome in a Moroccan family with three affected siblings. We identify two novel compound heterozygote mutations (c.1054C > A, c.16544delT) in the GPR98 gene in the three affected siblings carrying post-linguale bilateral moderate hearing loss with normal vestibular functions and before installing visual disturbances. This is the first time that mutations in the GPR98 gene are described in the Moroccan deaf patients.
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Affiliation(s)
- Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco.,Laboratoire des Sciences Biologiques, Filière Technique de Santé, Institution Supérieure des Professions Infirmières et Techniques de Santé (ISPITS), Casablanca, Morocco
| | - Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Mustapha Detsouli
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hassan Rouba
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Majida Charif
- PREMMI, Mitochondrial Medicine Research Centre, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933, Angers Cedex 9, France
| | - Guy Lenaers
- PREMMI, Mitochondrial Medicine Research Centre, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933, Angers Cedex 9, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco.
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9
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Bakhchane A, Charif M, Bousfiha A, Boulouiz R, Nahili H, Rouba H, Charoute H, Lenaers G, Barakat A. Novel compound heterozygous MYO7A mutations in Moroccan families with autosomal recessive non-syndromic hearing loss. PLoS One 2017; 12:e0176516. [PMID: 28472130 PMCID: PMC5417485 DOI: 10.1371/journal.pone.0176516] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 04/12/2017] [Indexed: 12/12/2022] Open
Abstract
The MYO7A gene encodes a protein belonging to the unconventional myosin super family. Mutations within MYO7A can lead to either non syndromic hearing loss or to the Usher syndrome type 1B (USH1B). Here, we report the results of genetic analyses performed on Moroccan families with autosomal recessive non syndromic hearing loss that identified two families with compound heterozygous MYO7A mutations. Five mutations (c.6025delG, c.6229T>A, c.3500T>A, c.5617C>T and c.4487C>A) were identified in these families, the latter presenting two differently affected branches. Multiple bioinformatics programs and molecular modelling predicted the pathogenic effect of these mutations. In conclusion, the absence of vestibular and retinal symptom in the affected patients suggests that these families have the isolated non-syndromic hearing loss DFNB2 (nonsyndromic autosomal recessive hearing loss) presentation, instead of USH1B.
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Affiliation(s)
- Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Majida Charif
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- Equipe MitoLab, INSERM U1083, CNRS 6015, Institut MitoVasc, Université d’Angers, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Redouane Boulouiz
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Halima Nahili
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Guy Lenaers
- Equipe MitoLab, INSERM U1083, CNRS 6015, Institut MitoVasc, Université d’Angers, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- * E-mail:
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10
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Bousfiha A, Bakhchane A, Charoute H, Riahi Z, Snoussi K, Rouba H, Bonnet C, Petit C, Barakat A. A novel PEX1 mutation in a Moroccan family with Zellweger spectrum disorders. Hum Genome Var 2017; 4:17009. [PMID: 28446956 PMCID: PMC5390255 DOI: 10.1038/hgv.2017.9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 02/03/2017] [Accepted: 02/07/2017] [Indexed: 01/18/2023] Open
Abstract
Mutations in the PEX1 gene are usually associated with recessive inherited diseases including Zellweger spectrum disorders. In this work, we identified a new pathogenic missense homozygous PEX1 mutation (p.Leu1026Pro, c.3077T>C) in two Moroccan syndromic deaf siblings from consanguineous parents. This variation is located in the P-loop containing nucleoside triphosphate hydrolase of protein domain and probably causes an alteration in the hydrolysis of ATP.
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Affiliation(s)
- Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Zied Riahi
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Khalid Snoussi
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Crystel Bonnet
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Christine Petit
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France.,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Collège de France, Paris, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
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11
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Charoute H, Kefi R, Bounaceur S, Benrahma H, Reguig A, Kandil M, Rouba H, Bakhchane A, Abdelhak S, Barakat A. Novel variants of mitochondrial DNA associated with Type 2 diabetes mellitus in Moroccan population. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 29:9-13. [PMID: 27728995 DOI: 10.1080/24701394.2016.1233530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this study, we investigated the association of mtDNA variants and haplogroups with Type 2 diabetes (T2D) in Moroccan patients. The Hypervariable Segments 1 of the mtDNA was sequenced in 108 diabetic patients and 97 controls. Association analyses were performed using Fisher's exact test and multivariate logistic regression. The prevalence of five mtDNA variants (C16187T, C16270T, T16172C, A16293G, and C16320T) was significantly higher in cases than in controls. Among these variants, only C16270T (p = .02) and C16320T (p = .03) remains significant after adjusting by age and gender. We showed that C16270T and C16320T variants were strongly associated with increased risk of T2D in Moroccan patients.
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Affiliation(s)
- Hicham Charoute
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Rym Kefi
- b Biomedical Genomics and Oncogenetics Laboratory (LR 11 IPT 05) , Institut Pasteur de Tunis, Université de Tunis El Manar , Tunis , Tunisia
| | - Safaa Bounaceur
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Houda Benrahma
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Ahmed Reguig
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Mostafa Kandil
- c Equipe d'Anthropogénétique et Biotechnologies, Faculté des Sciences , Université Chouaïb Doukkali , El Jadida , Morocco
| | - Hassan Rouba
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Amina Bakhchane
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Sonia Abdelhak
- b Biomedical Genomics and Oncogenetics Laboratory (LR 11 IPT 05) , Institut Pasteur de Tunis, Université de Tunis El Manar , Tunis , Tunisia
| | - Abdelhamid Barakat
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
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12
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Lakbakbi El Yaagoubi F, Charoute H, Bakhchane A, Ajjemami M, Benrahma H, Errouagui A, Kandil M, Rouba H, Barakat A. Association analysis of APOA5 rs662799 and rs3135506 polymorphisms with obesity in Moroccan patients. ACTA ACUST UNITED AC 2016; 63:243-7. [PMID: 26524954 DOI: 10.1016/j.patbio.2015.09.002] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 09/29/2015] [Indexed: 01/27/2023]
Abstract
The aim of the present study is to explore the association between the APOA5 polymorphisms and haplotypes with obesity in Moroccan patients. The study was performed in 459 subjects, Obese (n=164) and non-obese (n=295). All subjects were genotyped for the APOA5 -1131T>C (rs662799) and c.56C>G (rs3135506) polymorphisms. The contribution of APOA5 polymorphisms and haplotypes in the increased risk of obesity were explored using logistic regression analyses. The -1131T>C and c.56C>G polymorphisms were significantly associated with obesity. Both polymorphisms were strongly associated with increased BMI. Analysis of constructed haplotypes showed a significant association between CG haplotype and susceptibility to obesity (OR [95%CI]=3.09 [1.93-4.97]; P<0.001). These results support a potential role for APOA5 common variants and related haplotypes as risk factors for obesity.
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Affiliation(s)
- F Lakbakbi El Yaagoubi
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco; Équipe d'anthropogénétique et biotechnologies, faculté des sciences, université Chouaïb Doukkali, El Jadida, Morocco
| | - H Charoute
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - A Bakhchane
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - M Ajjemami
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - H Benrahma
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - A Errouagui
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - M Kandil
- Équipe d'anthropogénétique et biotechnologies, faculté des sciences, université Chouaïb Doukkali, El Jadida, Morocco
| | - H Rouba
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - A Barakat
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco.
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13
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Bakhchane A, Kindil Z, Charoute H, Benchikhi K, Khadir K, Nadifi S, Baline K, Roky R, Barakat A. Compound heterozygous SLC29A3 mutation causes H syndrome in a Moroccan patient: A case report. Curr Res Transl Med 2016; 64:65-8. [PMID: 27316388 DOI: 10.1016/j.retram.2016.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 01/19/2016] [Indexed: 12/17/2022]
Abstract
H syndrome is an autosomal recessive syndrome, which affects the skin and some vital organs, it is caused by mutations in the SLC29A3 gene, encoding the human equilibrative nucleoside transporter hENT3. This report describes a patient with typical features of H syndrome. Based on the patient's clinical features, SLC29A3 was selected for molecular investigation. Through direct sequencing, a compound heterozygous alteration in the SLC29A3 gene was found. The c.243delA frameshift mutation leading to a premature termination, resulting in a truncated protein, and a splice site mutation c.300+1G>C predicted to cause a splicing error. This contribution extends the clinical variability of compound heterozygous SLC29A3 mutations resulting in an additional multisystemic manifestation of the clinical spectrum of SLC29A3 disorders.
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Affiliation(s)
- A Bakhchane
- Pasteur Institute, Human Molecular Genetic Laboratory, Casablanca, Morocco
| | - Z Kindil
- Pasteur Institute, Human Molecular Genetic Laboratory, Casablanca, Morocco
| | - H Charoute
- Pasteur Institute, Human Molecular Genetic Laboratory, Casablanca, Morocco
| | - K Benchikhi
- Department of Dermatology, Hospital University Ibn Rochd, Casablanca, Morocco
| | - K Khadir
- Department of Dermatology, Hospital University Ibn Rochd, Casablanca, Morocco
| | - S Nadifi
- Laboratory of Human Genetics and Molecular Pathology, Faculty of medicine, Hassan II University, Casablanca, Morocco
| | - K Baline
- Department of Dermatology, Hospital University Ibn Rochd, Casablanca, Morocco
| | - R Roky
- Université Hassan II Ain Chock, Laboratoire de Physiologie et génétique moléculaire, Km 8 Route d'El Jadida, BP 5366 Maarif, 20100 Casablanca, Morocco
| | - A Barakat
- Pasteur Institute, Human Molecular Genetic Laboratory, Casablanca, Morocco.
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14
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Aadam Z, Kechout N, Barakat A, Chan KW, Ben-Ali M, Ben-Mustapha I, Zidi F, Ailal F, Attal N, Doudou F, Abbadi MC, Kaddache C, Smati L, Touri N, Chemli J, Gargah T, Brini I, Bakhchane A, Charoute H, Jeddane L, El Atiqi S, El Hafidi N, Hida M, Saile R, Alj HS, Boukari R, Bejaoui M, Najib J, Barbouche MR, Lau YL, Mellouli F, Bousfiha AA. X-Linked Agammagobulinemia in a Large Series of North African Patients: Frequency, Clinical Features and Novel BTK Mutations. J Clin Immunol 2016; 36:187-94. [PMID: 26931785 DOI: 10.1007/s10875-016-0251-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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: 11/09/2015] [Accepted: 02/21/2016] [Indexed: 11/26/2022]
Abstract
PURPOSE X-linked agammagobulinemia (XLA) is a primary immunodeficiency caused by Bruton's tyrosine kinase (BTK) gene defect. XLA patients have absent or reduced number of peripheral B cells and a profound deficiency in all immunoglobulin isotypes. This multicenter study reports the clinical, immunological and molecular features of Bruton's disease in 40 North African male patients. METHODS Fifty male out of 63 (male and female) patients diagnosed with serum agammaglobulinemia and non detectable to less than 2% peripheral B cells were enrolled. The search for BTK gene mutations was performed for all of them by genomic DNA amplification and Sanger sequencing. RESULTS We identified 33 different mutations in the BTK gene in 40 patients including 12 missense mutations, 6 nonsense mutations, 6 splice-site mutations, 5 frameshift, 2 large deletions, one complex mutation and one in-frame deletion. Seventeen of these mutations are novel. This large series shows a lower frequency of XLA among male patients from North Africa with agammaglobulinemia and absent to low B cells compared with other international studies (63.5% vs. 85%). No strong evidence for genotype-phenotype correlation was observed. CONCLUSIONS This study adds to other reports from highly consanguineous North African populations, showing lower frequency of X-linked forms as compared to AR forms of the same primary immunodeficiency. Furthermore, a large number of novel BTK mutations were identified and could further help identify carriers for genetic counseling.
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Affiliation(s)
- Zahra Aadam
- Laboratory of Biology and Health URAC34-Metabolic and Immunologic pathology Research Team, Faculty of Science of BenM'sik, King Hassan II University, Casablanca, Morocco
- Institut Pasteur, Human Molecular Genetic Laboratory, Casablanca, Morocco
| | - Nadia Kechout
- Department of Immunology, Institut Pasteur d'Algérie, Faculty of Medicine, Algiers, Algeria
| | - Abdelhamid Barakat
- Institut Pasteur, Human Molecular Genetic Laboratory, Casablanca, Morocco.
| | - Koon-Wing Chan
- Departments of Pediatrics and Adolescent Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Meriem Ben-Ali
- Laboratory of Transmission, Control and Immunobiology of Infections (LR11IPT02), Institut Pasteur de Tunis, and University Tunis El Manar, Tunis, Tunisia
| | - Imen Ben-Mustapha
- Laboratory of Transmission, Control and Immunobiology of Infections (LR11IPT02), Institut Pasteur de Tunis, and University Tunis El Manar, Tunis, Tunisia
| | - Fethi Zidi
- Department of Pediatrics, Regional Hospital of Tozeur, Tozeur, Tunisia
| | - Fatima Ailal
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
| | - Nabila Attal
- Department of Immunology, Institut Pasteur d'Algérie, Faculty of Medicine, Algiers, Algeria
| | - Fatouma Doudou
- Department of Immunology, Institut Pasteur d'Algérie, Faculty of Medicine, Algiers, Algeria
| | - Mohamed-Cherif Abbadi
- Department of Immunology, Institut Pasteur d'Algérie, Faculty of Medicine, Algiers, Algeria
| | | | - Leila Smati
- Department of Pediatrics, EPH Bologhine, Faculty of Medicine, Algiers, Algeria
| | - Nabila Touri
- Department of Pediatrics, CHU Blida, Blida, Algeria
| | - Jalel Chemli
- Department of Pediatrics, Sahloul Hospital, Sousse, Tunisia
| | - Tahar Gargah
- Department of Pediatrics, Charles Nicolle Hospital, Tunis, Tunisia
| | - Ines Brini
- Department of Pediatrics B, Children's Hospital of Tunis, Tunis, Tunisia
| | - Amina Bakhchane
- Institut Pasteur, Human Molecular Genetic Laboratory, Casablanca, Morocco
| | - Hicham Charoute
- Institut Pasteur, Human Molecular Genetic Laboratory, Casablanca, Morocco
| | - Leila Jeddane
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
| | - Sara El Atiqi
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
| | - Naïma El Hafidi
- Department of Pediatric Infectious Diseases, Avicenne University Hospital, Rabat, Morocco
| | - Mustapha Hida
- Department of Pediatrics, Hassan II University Hospital, Fez, Morocco
| | - Rachid Saile
- Laboratory of Biology and Health URAC34-Metabolic and Immunologic pathology Research Team, Faculty of Science of BenM'sik, King Hassan II University, Casablanca, Morocco
| | - Hanane Salih Alj
- Laboratory of Biology and Health URAC34-Metabolic and Immunologic pathology Research Team, Faculty of Science of BenM'sik, King Hassan II University, Casablanca, Morocco
| | - Rachida Boukari
- Department of Pediatrics, CHU Mustapaha Bacha, Faculty of Medicine, Algiers, Algeria
| | - Mohamed Bejaoui
- National Bone Marrow Transplantation Center, Jebel Lakhdar, Tunis, Tunisia
| | - Jilali Najib
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
| | - Mohamed-Ridha Barbouche
- Laboratory of Transmission, Control and Immunobiology of Infections (LR11IPT02), Institut Pasteur de Tunis, and University Tunis El Manar, Tunis, Tunisia
| | - Yu-Lung Lau
- Departments of Pediatrics and Adolescent Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Fethi Mellouli
- National Bone Marrow Transplantation Center, Jebel Lakhdar, Tunis, Tunisia
| | - Ahmed Aziz Bousfiha
- Clinical Immunology Unit, Ibn Rochd Hospital, King Hassan II University-AinChok, Casablanca, Morocco
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15
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Karkar A, Barakat A, Bakhchane A, Fettah H, Slassi I, Dorboz I, Boespflug-Tanguy O, Nadifi S. A novel mutation in the ABCD1 gene of a Moroccan patient with X-linked adrenoleukodystrophy: case report. BMC Neurol 2015; 15:244. [PMID: 26607867 PMCID: PMC4660798 DOI: 10.1186/s12883-015-0503-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 11/21/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND X-linked adrenoleukodystrophy (X-ALD; OMIM: 300100) is the most common peroxisomal disease caused by mutations in the ATP-binding cassette, sub-family D member 1 gene or ABCD1 (geneID: 215), the coding gene for the adrenoleukodystrophy protein (ALDP), which is an ATP-binding transport protein associated to an active transport of very long chain fatty acids (VLCFAs). Dysfunction of ALDP induces an accumulation of VLCFAs in all tissues leading to a neurodegenerative disorder that involves the nervous system white matter. CASE PRESENTATION In our case report, magnetic resonance imaging (MRI) as well as the high levels of VLCFAs prompted the diagnosis the X-ALD. Molecular analysis of ABCD1 gene have shown a pathogenic homozygous nonsense mutation (c.1677C > G; p.(Tyr559*)) in exon 7. CONCLUSION Thus, we identified here a novel mutation in the ABCD1 gene in a Moroccan patient causing X-linked adrenoleukodystrophy.
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Affiliation(s)
- Adnane Karkar
- Inserm U1141, Paris Diderot University, Sorbonne Paris Cité, Robert Debré Hospital, Paris, France. .,Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Hassan II University, Casablanca, Morocco.
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco.
| | - Amina Bakhchane
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco.
| | - Houda Fettah
- Department of Neuropediatrics, Hassan II University Hospital, 9154, Casablanca, Morocco.
| | - Ilham Slassi
- Department of Neurology, Hassan II University Hospital, 9154, Casablanca, Morocco.
| | - Imen Dorboz
- Inserm U1141, Paris Diderot University, Sorbonne Paris Cité, DHU PROTECT, Robert Debré Hospital, Paris, France.
| | - Odile Boespflug-Tanguy
- Inserm U1141, Paris Diderot University, Sorbonne Paris Cité, DHU PROTECT, Robert Debré Hospital, Paris, France. .,Reference Center For Leukodystrophies, Department of Neuropediatrics and Metabolic Diseases, Robert Debré Hospital, AP-HP, Paris, France.
| | - Sellama Nadifi
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Hassan II University, Casablanca, Morocco.
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16
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Bakhchane A, Charif M, Salime S, Boulouiz R, Nahili H, Roky R, Lenaers G, Barakat A. Recessive TBC1D24 Mutations Are Frequent in Moroccan Non-Syndromic Hearing Loss Pedigrees. PLoS One 2015; 10:e0138072. [PMID: 26371875 PMCID: PMC4570774 DOI: 10.1371/journal.pone.0138072] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/26/2015] [Indexed: 11/18/2022] Open
Abstract
Mutations in the TBC1D24 gene are responsible for four neurological presentations: infantile epileptic encephalopathy, infantile myoclonic epilepsy, DOORS (deafness, onychodystrophy, osteodystrophy, mental retardation and seizures) and NSHL (non-syndromic hearing loss). For the latter, two recessive (DFNB86) and one dominant (DFNA65) mutations have so far been identified in consanguineous Pakistani and European/Chinese families, respectively. Here we report the results of a genetic study performed on a large Moroccan cohort of deaf patients that identified three families with compound heterozygote mutations in TBC1D24. Four novel mutations were identified, among which, one c.641G>A (p.Arg214His) was present in the three families, and has a frequency of 2% in control Moroccan population with normal hearing, suggesting that it acts as an hypomorphic variant leading to restricted deafness when combined with another recessive severe mutation. Altogether, our results show that mutations in TBC1D24 gene are a frequent cause (>2%) of NSHL in Morocco, and that due to its possible compound heterozygote recessive transmission, this gene should be further considered and screened in other deaf cohorts.
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Affiliation(s)
- Amina Bakhchane
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Majida Charif
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
- Institut des Neurosciences de Montpellier, U1051 de l’INSERM, Université de Montpellier, BP 74103, 34091 Montpellier cedex 05, France
- PREMMi, Mitochondrial Medicine Research Centre, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933 Angers cedex 9, France
| | - Sara Salime
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
- Institut des Neurosciences de Montpellier, U1051 de l’INSERM, Université de Montpellier, BP 74103, 34091 Montpellier cedex 05, France
| | - Redouane Boulouiz
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Halima Nahili
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Rachida Roky
- Université Hassan II Ain Chock, Laboratoire de Physiologie et génétique moléculaire, Km 8 Route d'El Jadida, B.P 5366 Maarif, Casablanca, 20100, Morocco
| | - Guy Lenaers
- Institut des Neurosciences de Montpellier, U1051 de l’INSERM, Université de Montpellier, BP 74103, 34091 Montpellier cedex 05, France
- PREMMi, Mitochondrial Medicine Research Centre, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933 Angers cedex 9, France
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
- * E-mail:
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17
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Charoute H, Bakhchane A, Benrahma H, Romdhane L, Gabi K, Rouba H, Fakiri M, Abdelhak S, Lenaers G, Barakat A. Mediterranean Founder Mutation Database (MFMD): Taking Advantage from Founder Mutations in Genetics Diagnosis, Genetic Diversity and Migration History of the Mediterranean Population. Hum Mutat 2015; 36:E2441-53. [PMID: 26173767 DOI: 10.1002/humu.22835] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 06/26/2015] [Indexed: 01/09/2023]
Abstract
The Mediterranean basin has been the theater of migration crossroads followed by settlement of several societies and cultures in prehistoric and historical times, with important consequences on genetic and genomic determinisms. Here, we present the Mediterranean Founder Mutation Database (MFMD), established to offer web-based access to founder mutation information in the Mediterranean population. Mutation data were collected from the literature and other online resources and systematically reviewed and assembled into this database. The information provided for each founder mutation includes DNA change, amino-acid change, mutation type and mutation effect, as well as mutation frequency and coalescence time when available. Currently, the database contains 383 founder mutations found in 210 genes related to 219 diseases. We believe that MFMD will help scientists and physicians to design more rapid and less expensive genetic diagnostic tests. Moreover, the coalescence time of founder mutations gives an overview about the migration history of the Mediterranean population. MFMD can be publicly accessed from http://mfmd.pasteur.ma.
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Affiliation(s)
- Hicham Charoute
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.,Laboratory of Agri-food and Health, Faculty of Sciences and Techniques, Hassan 1st University, BP 577, 26000, Settat, Morocco
| | - Amina Bakhchane
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Houda Benrahma
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Lilia Romdhane
- Laboratory of Biomedical Genomics and Oncogenetics LR11IPT05, Institut Pasteur de Tunis, 1002, Tunis, Tunisia
| | - Khalid Gabi
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hassan Rouba
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Malika Fakiri
- Laboratory of Agri-food and Health, Faculty of Sciences and Techniques, Hassan 1st University, BP 577, 26000, Settat, Morocco
| | - Sonia Abdelhak
- Laboratory of Biomedical Genomics and Oncogenetics LR11IPT05, Institut Pasteur de Tunis, 1002, Tunis, Tunisia
| | - Guy Lenaers
- Pôle de Recherche et d'Enseignement en Médecine Mitochondriale (PREMMi), Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933, Angers cedex 9, France
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
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18
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El Khachibi M, Diakite B, Hamzi K, Badou A, Senhaji MA, Bakhchane A, Jouhadi H, Barakat A, Benider A, Nadifi S. Screening of exon 11 of BRCA1 gene using the high resolution melting approach for diagnosis in Moroccan breast cancer patients. BMC Cancer 2015; 15:81. [PMID: 25885115 PMCID: PMC4351675 DOI: 10.1186/s12885-015-1040-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 01/23/2015] [Indexed: 11/16/2022] Open
Abstract
Background Identification of specific mutations in cancer patients may lead to the discovery of genes, which can affect susceptibility and/or prognosis. It has previously been reported that mutations in BRCA1 and BRCA2 genes are linked to breast cancer. Here, we evaluated the use of the High Resolution Melting (HRM) approach to screen for mutations in exon 11 of BRCA1 gene in Moroccan patients. Methods HRM analysis was used to screen exon 11 from 71 breast cancer patients in order to detect different variants. Conventional Sanger sequencing was used to confirm the presence of possible mutations. Distribution of different SNPs was determined by SNaPshot analysis software. Results In order to assess the efficacy of the HRM approach to screen for mutations, especially in diagnosis, we first used two samples with previously known mutations, “2924delA and 3398delC”. Indeed, these previously known sequence variants were detected by the HRM approach and yielded melting curves with atypical shape relative to wild-type control sequences. We then analyzed, 69 samples from breast cancer patients using the HRM method, and were able to detect two samples with atypical curves. Sequencing of the two samples, using the conventional Sanger approach, confirmed the presence of the same SNP (c.2612C > T) in both samples. Conclusions Our results strongly suggest that the HRM approach represents a reliable and highly sensitive method for mutation scanning, especially in diagnosis.
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Affiliation(s)
- Meryam El Khachibi
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca, Morocco.
| | - Brehima Diakite
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca, Morocco.
| | - Khalil Hamzi
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca, Morocco.
| | - Abdallah Badou
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca, Morocco.
| | - Mohamed Amine Senhaji
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca, Morocco.
| | - Amina Bakhchane
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco.
| | - Hassan Jouhadi
- Department of Oncology, Ibn Rochd University Hospital, Casablanca, Morocco.
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco.
| | - Abdellatif Benider
- Department of Oncology, Ibn Rochd University Hospital, Casablanca, Morocco.
| | - Sellama Nadifi
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, Casablanca, Morocco.
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Charif M, Bakhchane A, Abidi O, Boulouiz R, Eloualid A, Roky R, Rouba H, Kandil M, Lenaers G, Barakat A. Analysis of CLDN14 gene in deaf Moroccan patients with non-syndromic hearing loss. Gene 2013; 523:103-5. [DOI: 10.1016/j.gene.2013.03.123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 03/20/2013] [Accepted: 03/27/2013] [Indexed: 10/27/2022]
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