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Charzewska A, Maiwald R, Kahrizi K, Oehl-Jaschkowitz B, Dufke A, Lemke J, Enders H, Najmabadi H, Tzschach A, Hachmann W, Jensen C, Bienek M, Poznański J, Nawara M, Chilarska T, Obersztyn E, Hoffman-Zacharska D, Gos M, Bal J, Kalscheuer V. The power of the Mediator complex-Expanding the genetic architecture and phenotypic spectrum of MED12
-related disorders. Clin Genet 2018; 94:450-456. [DOI: 10.1111/cge.13412] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/27/2018] [Accepted: 07/03/2018] [Indexed: 01/22/2023]
Affiliation(s)
- A. Charzewska
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - R. Maiwald
- MVZ für Medizinische Genetik und Molekulare Medizin; Cologne Germany
| | - K. Kahrizi
- Genetics Research Center; University of Social Welfare and Rehabilitation Sciences; Tehran Iran
| | - B. Oehl-Jaschkowitz
- Gemeinschaftspraxis für Humangenetik, Biomedizinisches Zentrum; Homburg Germany
| | - A. Dufke
- Institut für Medizinische Genetik und Angewandte Genomik; Tübingen Germany
| | - J.R. Lemke
- Institut für Medizinische Genetik und Angewandte Genomik; Tübingen Germany
- Institut für Humangenetik am Universitätsklinikum Leipzig AöR; Leipzig Germany
| | - H. Enders
- Institut für Medizinische Genetik und Angewandte Genomik; Tübingen Germany
- MVZ Humangenetik Ulm; Ulm Germany
| | - H. Najmabadi
- Genetics Research Center; University of Social Welfare and Rehabilitation Sciences; Tehran Iran
| | - A. Tzschach
- Institut für Medizinische Genetik und Angewandte Genomik; Tübingen Germany
- Institut für Klinische Genetik, Medizinische Fakultät CGC; Technische Universität Dresden; Dresden Germany
| | - W. Hachmann
- Elisabeth-Krankenhaus Rheydt, Klinik für Kinder und Jugendliche; Mönchengladbach Germany
| | - C. Jensen
- Department of Human Molecular Genetics; Max Planck Institute for Molecular Genetics; Berlin Germany
- Abteilung Funktionelle Genomforschung, Universitätsmedizin; Greifswald Germany
| | - M. Bienek
- Department of Human Molecular Genetics; Max Planck Institute for Molecular Genetics; Berlin Germany
| | - J. Poznański
- Department of Biophysics; Polish Academy of Sciences, Institute of Biochemistry and Biophysics; Warsaw Poland
| | - M. Nawara
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - T. Chilarska
- Department of Genetics; Polish Mother's Memorial Hospital Research Institute; Łódź Poland
| | - E. Obersztyn
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | | | - M. Gos
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - J. Bal
- Department of Medical Genetics; Institute of Mother and Child; Warsaw Poland
| | - V.M. Kalscheuer
- Max Planck Institute for Molecular Genetics, Research Group Development and Disease; Berlin Germany
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Fattahi Z, Kalhor Z, Fadaee M, Vazehan R, Parsimehr E, Abolhassani A, Beheshtian M, Zamani G, Nafissi S, Nilipour Y, Akbari M, Kahrizi K, Kariminejad A, Najmabadi H. Improved diagnostic yield of neuromuscular disorders applying clinical exome sequencing in patients arising from a consanguineous population. Clin Genet 2016; 91:386-402. [DOI: 10.1111/cge.12810] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 04/28/2016] [Accepted: 05/25/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Z. Fattahi
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - Z. Kalhor
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
| | - M. Fadaee
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - R. Vazehan
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - E. Parsimehr
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - A. Abolhassani
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - M. Beheshtian
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - G. Zamani
- Department of NeurologyTehran University of Medical Sciences Tehran Iran
| | - S. Nafissi
- Department of Pediatric Neurology, Pediatrics Center of Excellence, Children's Medical CenterTehran University of Medical Sciences Tehran Iran
| | - Y. Nilipour
- Pediatric Pathology Research Center, Mofid Children HospitalShahid Beheshti University of Medical Sciences Tehran Iran
| | - M.R. Akbari
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
- Women's College Research InstituteWomen's College Hospital Toronto Canada
- Dalla Lana School of Public HealthUniversity of Toronto Toronto Canada
| | - K. Kahrizi
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
| | - A. Kariminejad
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
| | - H. Najmabadi
- Genetics Research CenterUniversity of Social Welfare and Rehabilitation Sciences Tehran Iran
- Kariminejad ‐ Najmabadi Pathology & Genetics Center Tehran Iran
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Papari E, Bastami M, Farhadi A, Abedini SS, Hosseini M, Bahman I, Mohseni M, Garshasbi M, Moheb LA, Behjati F, Kahrizi K, Ropers HH, Najmabadi H. Investigation of primary microcephaly in Bushehr province of Iran: novel STIL and ASPM mutations. Clin Genet 2012; 83:488-90. [PMID: 22989186 DOI: 10.1111/j.1399-0004.2012.01949.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 06/09/2012] [Accepted: 08/07/2012] [Indexed: 11/27/2022]
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Soltani Banavandi MJ, Kahrizi K, Behjati F, Mohseni M, Darvish H, Bahman I, Abedinni SS, Ghasemi Firouzabadi S, Jafari E, Ghadami S, Sabbagh F, Kavoosi GR, Najmabadi H. Investigation of genetic causes of intellectual disability in kerman province, South East of iran. Iran Red Crescent Med J 2012; 14:79-85. [PMID: 22737560 PMCID: PMC3372047] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2011] [Accepted: 10/12/2011] [Indexed: 11/30/2022]
Abstract
BACKGROUND Intellectual disability (ID) has a worldwide prevalence of 1-3% and results from extraordinary heterogeneous. To shed more light on the causes of ID in Kerman Province, in Southeast Iran, we set out in 2008 to perform systematic clinical studies and homozygosity mapping in large Iranian families with ID. METHODS Fifty seven families with a minimum of two mentally retarded children from Kerman Province were initially tested for metabolic disorders, by Tandem mass spectrometry. Fragile X testing and standard karyotyping were performed for all probands of families. Cases with autosomal recessive (AR) pattern of inheritance and microcephaly were subjected to homozygosity mapping by using several microsatellite markers for known MCPH loci. RESULTS Three out of seven families with X-linked pattern of inheritance were positive for fragile X syndrome. Chromosome abnormality was not observed in any of dysmorphic patients and all families were negative for metabolic tests. Among the remaining 50 families of AR ID, six were found to be microcephalic, of which 2 linked to two MCPH loci (33.3%). The rest 4 families were not linked to any of the known loci. CONCLUSION The results of this study showed that ID with microcephaly comprised 12% of ID cases in Kerman Province. In two families with apparent linkage to the MCPH5 and MCPH6 locus, mutation screening was not successful, which might indicate that either the mutation is located in the regulatory sequences of the gene or that there might be another genes present in these regions, which is mutated in such cases.
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Affiliation(s)
- M J Soltani Banavandi
- Faculty of Basic Science, Science and Research Branch, Islamic Azad University, Fars, Iran,Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - K Kahrizi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - F Behjati
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - M Mohseni
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - H Darvish
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - I Bahman
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - S S Abedinni
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - S Ghasemi Firouzabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - E Jafari
- Deptartment of Microbiology, Faculty of Basic Science, Islamic Azad University, Kerman Branch, Kerman, Iran
| | - Sh Ghadami
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - F Sabbagh
- Genetics Counseling Center, Welfare Organization of Kerman Province, Kerman, Iran
| | - Gh R Kavoosi
- Institute of Biotechnology, University of Shiraz, Shiraz, Iran
| | - H Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran,Correspondence: Hossein Najmabadi, PhD, Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Tel.: +98-21-22180138, Fax: +98-21-22180138, E-mail:
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Hemmati S, Kahrizi K, Najmabadi H, Sahrawian S. P-492 - Analysis of association serotonin transporter gene and antidepressant response to citalopram in iranian major depressive population. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)74659-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Darvish H, Esmaeeli-Nieh S, Monajemi GB, Mohseni M, Ghasemi-Firouzabadi S, Abedini SS, Bahman I, Jamali P, Azimi S, Mojahedi F, Dehghan A, Shafeghati Y, Jankhah A, Falah M, Soltani Banavandi MJ, Ghani M, Ghani-Kakhi M, Garshasbi M, Rakhshani F, Naghavi A, Tzschach A, Neitzel H, Ropers HH, Kuss AW, Behjati F, Kahrizi K, Najmabadi H. A clinical and molecular genetic study of 112 Iranian families with primary microcephaly. J Med Genet 2010; 47:823-8. [PMID: 20978018 DOI: 10.1136/jmg.2009.076398] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Primary microcephaly (MCPH) is a genetically heterogeneous disorder showing an autosomal recessive mode of inheritance. Affected individuals present with head circumferences more than three SDs below the age- and sex-matched population mean, associated with mild to severe mental retardation. Five genes (MCPH1, CDK5RAP2, ASPM, CENPJ, STIL) and two genomic loci, MCPH2 and MCPH4, have been identified so far. METHODS AND RESULTS In this study, we investigated all seven MCPH loci in patients with primary microcephaly from 112 Consanguineous Iranian families. In addition to a thorough clinical characterisation, karyotype analyses were performed for all patients. For Homozygosity mapping, microsatellite markers were selected for each locus and used for genotyping. Our investigation enabled us to detect homozygosity at MCPH1 (Microcephalin) in eight families, at MCPH5 (ASPM) in thirtheen families. Three families showed homozygosity at MCPH2 and five at MCPH6 (CENPJ), and two families were linked to MCPH7 (STIL). The remaining 81 families were not linked to any of the seven known loci. Subsequent sequencing revealed eight, 10 and one novel mutations in Microcephalin, ASPM and CENPJ, respectively. In some families, additional features such as short stature, seizures or congenital hearing loss were observed in the microcephalic patient, which widens the spectrum of clinical manifestations of mutations in known microcephaly genes. CONCLUSION Our results show that the molecular basis of microcephaly is heterogeneous; thus, the Iranian population may provide a unique source for the identification of further genes underlying this disorder.
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Affiliation(s)
- H Darvish
- Genetics Research Centre, University of Social Welfare and Rehabilitation Sciences, Kodakyar Street, Daneshjo Ave, Tehran, Iran
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Yang T, Kahrizi K, Bazazzadeghan N, Meyer N, Najmabadi H, Smith RJH. A novel mutation adjacent to the Bth mouse mutation in the TMC1 gene makes this mouse an excellent model of human deafness at the DFNA36 locus. Clin Genet 2010; 77:395-8. [PMID: 20447146 DOI: 10.1111/j.1399-0004.2009.01338.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hildebrand MS, Thorne NP, Bromhead CJ, Kahrizi K, Webster JA, Fattahi Z, Bataejad M, Kimberling WJ, Stephan D, Najmabadi H, Bahlo M, Smith RJH. Variable hearing impairment in a DFNB2 family with a novel MYO7A missense mutation. Clin Genet 2010; 77:563-71. [PMID: 20132242 DOI: 10.1111/j.1399-0004.2009.01344.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Myosin VIIA mutations have been associated with non-syndromic hearing loss (DFNB2; DFNA11) and Usher syndrome type 1B (USH1B). We report clinical and genetic analyses of a consanguineous Iranian family segregating autosomal recessive non-syndromic hearing loss (ARNSHL). The hearing impairment was mapped to the DFNB2 locus using Affymetrix 50K GeneChips; direct sequencing of the MYO7A gene was completed. The Iranian family (L-1419) was shown to segregate a novel homozygous missense mutation (c.1184G>A) that results in a p.R395H amino acid substitution in the motor domain of the myosin VIIA protein. As one affected family member had significantly less severe hearing loss, we used a candidate approach to search for a genetic modifier. This novel MYO7A mutation is the first reported to cause DFNB2 in the Iranian population and this DFNB2 family is the first to be associated with a potential modifier. The absence of vestibular and retinal defects, and less severe low frequency hearing loss, is consistent with the phenotype of a recently reported Pakistani DFNB2 family. Thus, we conclude this family has non-syndromic hearing loss (DFNB2) rather than USH1B, providing further evidence that these two diseases represent discrete disorders.
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Affiliation(s)
- M S Hildebrand
- Department of Otolaryngology, University of Iowa, Iowa City, IA, USA
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Hasanzad M, Azad M, Kahrizi K, Saffar BS, Nafisi S, Keyhanidoust Z, Azimian M, Refah AA, Also E, Urtizberea JA, Tizzano EF, Najmabadi H. Carrier frequency of SMA by quantitative analysis of the SMN1 deletion in the Iranian population. Eur J Neurol 2009; 17:160-2. [DOI: 10.1111/j.1468-1331.2009.02693.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hilgert N, Kahrizi K, Dieltjens N, Bazazzadegan N, Najmabadi H, Smith RJH, Van Camp G. A large deletion in GPR98 causes type IIC Usher syndrome in male and female members of an Iranian family. J Med Genet 2009; 46:272-6. [PMID: 19357116 DOI: 10.1136/jmg.2008.060947] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Usher syndrome (USH) is a clinically and genetically heterogeneous disease. The three recognised clinical phenotypes (types I, II and III; USH1, USH2 and USH3) are caused by mutations in nine different genes. USH2C is characterised by moderate to severe hearing loss, retinitis pigmentosa and normal vestibular function. One earlier report describes mutations in GPR98 (VLGR1) in four families segregating this phenotype. OBJECTIVE To detect the disease-causing mutation in an Iranian family segregating USH2C. In this family, five members had a phenotype compatible with Usher syndrome, and two others had nonsyndromic hearing loss. METHODS Mutation analysis of all 90 coding exons of GPR98. RESULTS Consistent with these clinical findings, the five subjects with USH carried a haplotype linked to the USH2C locus, whereas the two subjects with nonsyndromic hearing loss did not. We identified a new mutation in GPR98 segregating with USH2C in this family. The mutation is a large deletion g.371657_507673del of exons 84 and 85, presumably leading to a frameshift. CONCLUSIONS A large GPR98 deletion of 136 017 bp segregates with USH2C in an Iranian family. To our knowledge, this is only the second report of a GPR98 mutation, and the first report on male subjects with USH2C and a GPR98 mutation.
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Affiliation(s)
- N Hilgert
- Department of Medical Genetics, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
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Tzschach A, Bozorgmehr B, Hadavi V, Kahrizi K, Garshasbi M, Motazacker MM, Ropers HH, Kuss AW, Najmabadi H. Alopecia-mental retardation syndrome: clinical and molecular characterization of four patients. Br J Dermatol 2008; 159:748-51. [PMID: 18616779 DOI: 10.1111/j.1365-2133.2008.08719.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chen W, Kahrizi K, Meyer NC, Riazalhosseini Y, Van Camp G, Najmabadi H, Smith RJH. Mutation of COL11A2 causes autosomal recessive non-syndromic hearing loss at the DFNB53 locus. J Med Genet 2005; 42:e61. [PMID: 16033917 PMCID: PMC1735925 DOI: 10.1136/jmg.2005.032615] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Allele variants of COL11A2, encoding collagen type XI alpha2, cause autosomal dominant non-syndromic hearing loss (ARNSHL) at the DFNA13 locus (MIM 601868) and various syndromes that include a deafness phenotype. OBJECTIVE To describe a genome-wide scan carried out on a consanguineous Iranian family segregating ARNSHL. RESULTS Genotyping data identified a novel locus for ARNSHL on chromosome 6p21.3, which was designated DFNB53. Homozygosity for the P621T mutation of COL11A2 was present in all deaf persons in this family; this same variation was absent in 269 Iranian controls. Sequence comparison of collagen type XI alpha1 and alpha2 peptides across species shows that the replaced proline is an evolutionarily conserved amino acid. CONCLUSIONS The P621T mutation of COL11A2 affects the Y position of the canonical -Gly-X-Y- repeat in collagens. It lies near the amino-terminus of the triple helical region and causes ARNSHL. This finding suggests that mutation type and location are critical determinants in defining the phenotype of COL11A2 associated diseases.
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