| Autor: |
Kinga Sałacińska, Iwona Pinkier, Lena Rutkowska, Danuta Chlebna-Sokół, Elżbieta Jakubowska-Pietkiewicz, Izabela Michałus, Łukasz Kępczyński, Dominik Salachna, Nina Wieczorek-Cichecka, Małgorzata Piotrowicz, Tatiana Chilarska, Aleksander Jamsheer, Paweł Matusik, Małgorzata Wilk, Elżbieta Petriczko, Maria Giżewska, Iwona Stecewicz, Mieczysław Walczak, Magda Rybak-Krzyszkowska, Andrzej Lewiński, Agnieszka Gach |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Frontiers in Endocrinology, Vol 14 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1664-2392 |
| DOI: |
10.3389/fendo.2023.1149982 |
| Popis: |
Osteogenesis imperfecta (OI) is a rare genetic disorder of the connective tissue. It presents with a wide spectrum of skeletal and extraskeletal features, and ranges in severity from mild to perinatal lethal. The disease is characterized by a heterogeneous genetic background, where approximately 85%–90% of cases have dominantly inherited heterozygous pathogenic variants located in the COL1A1 and COL1A2 genes. This paper presents the results of the first nationwide study, performed on a large cohort of 197 Polish OI patients. Variants were identified using a next-generation sequencing (NGS) custom gene panel and multiplex ligation probe amplification (MLPA) assay. The following OI types were observed: 1 (42%), 2 (3%), 3 (35%), and 4 (20%). Collagen type I pathogenic variants were reported in 108 families. Alterations were observed in α1 and α2 in 70% and 30% of cases, respectively. The presented paper reports 97 distinct causative variants and expands the OI database with 38 novel pathogenic changes. It also enabled the identification of the first glycine-to-tryptophan substitution in the COL1A1 gene and brought new insights into the clinical severity associated with variants localized in “lethal regions”. Our results contribute to a better understanding of the clinical and genetic aspects of OI. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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