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Jezela-Stanek A, Szczepanik E, Mierzewska H, Rydzanicz M, Rutkowska K, Knaus A, Śmigiel R, Stępniak I, Markiewicz MG, Boniel S, Krawitz P, Płoski R. Evidence of the milder phenotypic spectrum of c.1582G>A PIGT variant: Delineation based on seven novel Polish patients. Clin Genet 2021; 98:468-476. [PMID: 32725661 DOI: 10.1111/cge.13822] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/18/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 11/29/2022]
Abstract
PIGT is one of over 29 glycosylphosphatidylinositol biosynthesis defect genes. Mutations cause genetically determined disorders characterized mainly by epilepsy with fever-sensitivity, central hypotonia, psychomotor delay and congenital malformations. The disease is known as multiple congenital anomalies-hypotonia-seizures syndrome 3 (MCAHS3) or glycosylphosphatidylinositol biosynthesis defect-7. Twenty-eight cases have been reported until today. We present seven novel Polish patients, all harboring 1582G>A variant in a homozygous or compound heterozygous state which seems to cause a milder phenotype of the disease.
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Affiliation(s)
- Aleksandra Jezela-Stanek
- Department of Genetics and Clinical Immunology, National Institute of Tuberculosis and Lung Diseases, Warsaw, Poland
| | - Elżbieta Szczepanik
- Clinic of Pediatric Neurology, Institute of Mother and Child, Warsaw, Poland
| | - Hanna Mierzewska
- Clinic of Pediatric Neurology, Institute of Mother and Child, Warsaw, Poland
| | | | - Karolina Rutkowska
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Alexej Knaus
- Institute for Genomic Statistics and Bioinformatics, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Robert Śmigiel
- Department of Pediatrics, Division Pediatric Propedeutics and Rare Disorders, Wroclaw Medical University, Wroclaw, Poland
| | - Iwona Stępniak
- Department of Genetics, Institute of Psychiatry and Neurology, Warsaw, Poland
| | - Michał G Markiewicz
- First Department of Neurology, Institute of Psychiatry and Neurology, Warsaw, Poland
| | - Snir Boniel
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Peter Krawitz
- Institute for Genomic Statistics and Bioinformatics, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
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