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Novel Kiaa0753 Mutations Extend the Phenotype of Skeletal Ciliopathies Publisher Pubmed



Hammarsjo A1, 2 ; Wang Z3, 4 ; Vaz R1 ; Taylan F1 ; Sedghi M5 ; Girisha KM6 ; Chitayat D7, 8 ; Neethukrishna K6 ; Shannon P9 ; Godoy R7 ; Gowrishankar K10 ; Lindstrand A1, 2 ; Nasiri J11 ; Baktashian M12 Show All Authors
Authors
  1. Hammarsjo A1, 2
  2. Wang Z3, 4
  3. Vaz R1
  4. Taylan F1
  5. Sedghi M5
  6. Girisha KM6
  7. Chitayat D7, 8
  8. Neethukrishna K6
  9. Shannon P9
  10. Godoy R7
  11. Gowrishankar K10
  12. Lindstrand A1, 2
  13. Nasiri J11
  14. Baktashian M12
  15. Newton PT13
  16. Guo L3
  17. Hofmeister W1
  18. Pettersson M1, 2
  19. Chagin AS13
  20. Nishimura G14
  21. Yan L15
  22. Matsumoto N16
  23. Nordgren A1, 2
  24. Miyake N16
  25. Grigelioniene G1, 2
  26. Ikegawa S3
Show Affiliations
Authors Affiliations
  1. 1. Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
  2. 2. Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
  3. 3. Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
  4. 4. Department of Medical Genetics, Institute of Basic Medical Sciences, Peking Union Medical College, Beijing, China
  5. 5. Medical Genetics Laboratory, Alzahra University Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
  6. 6. Department of Medical Genetics, Kasturba Medical College, Manipal University, Manipal, India
  7. 7. Prenatal Diagnosis and Medical Genetics Program, Department of Obstetrics and Gynecology, University of Toronto, Toronto, ON, Canada
  8. 8. Division of Clinical and Metabolic Genetics, Department of Pediatrics, University of Toronto, Toronto, ON, Canada
  9. 9. Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
  10. 10. Medical Genetics, Kanchi Kamakoti Childs Trust Hospital, Chennai Tamilnadu, India
  11. 11. Department of Pediatric Neurology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  12. 12. Stud. Research Committee, Department of Modern Sciences and Technologies, Mashhad University of Medical Sciences, Mashhad, Iran
  13. 13. Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
  14. 14. Intractable Disease Center, Saitama University Hospital, Saitama, Japan
  15. 15. Department of Neurology, China-Japan Friendship Hospital, Beijing, China
  16. 16. Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan

Source: Scientific Reports Published:2017


Abstract

The skeletal ciliopathies are a heterogeneous group of disorders with a significant clinical and genetic variability and the main clinical features are thoracic hypoplasia and short tubular bones. To date, 25 genes have been identified in association with skeletal ciliopathies. Mutations in the KIAA0753 gene have recently been associated with Joubert syndrome (JBTS) and orofaciodigital (OFD) syndrome. We report biallelic pathogenic variants in KIAA0753 in four patients with short-rib type skeletal dysplasia. The manifestations in our patients are variable and ranging from fetal lethal to viable and moderate skeletal dysplasia with narrow thorax and abnormal metaphyses. We demonstrate that KIAA0753 is expressed in normal fetal human growth plate and show that the affected fetus, with a compound heterozygous frameshift and a nonsense mutation in KIAA0753, has an abnormal proliferative zone and a broad hypertrophic zone. The importance of KIAA0753 for normal skeletal development is further confirmed by our findings that zebrafish embryos homozygous for a nonsense mutation in kiaa0753 display altered cartilage patterning. © 2017 The Author(s).
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