Single-centre experience with autosomal recessive limb-girdle muscular dystrophy: case series and literature review
| Autor: | Paulo José Lorenzoni, Cláudia Suemi Kamoi Kay, Renata Dal-Pra Ducci, Otto Jesus Hernandez Fustes, Paula Raquel do Vale Pascoal Rodrigues, Nyvia Milicio Coblinski Hrysay, Raquel Cristina Arndt, Lineu Cesar Werneck, Rosana Herminia Scola |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Arquivos de Neuro-Psiquiatria, Vol 81, Iss 10, Pp 922-933 (2023) |
| Druh dokumentu: | article |
| ISSN: | 0004-282X 1678-4227 |
| DOI: | 10.1055/s-0043-1772833 |
| Popis: | Limb-girdle muscular dystrophy (LGMD) is a group of myopathies that lead to progressive muscle weakness, predominantly involving the shoulder and pelvic girdles; it has a heterogeneous genetic etiology, with variation in the prevalence of subtypes according to the ethnic backgrounds and geographic origins of the populations. The aim of the present study was to analyze a series of patients with autosomal recessive LGMD (LGMD-R) to contribute to a better characterization of the disease and to find the relative proportion of the different subtypes in a Southern Brazil cohort. The sample population consisted of 36 patients with LGMD-R. A 9-gene targeted next-generation sequencing panel revealed variants in 23 patients with LGMD (64%), and it identified calpainopathy (LGMD-R1) in 26%, dysferlinopathy (LGMD-R2) in 26%, sarcoglycanopathies (LGMD-R3–R5) in 13%, telethoninopathy (LGMD-R7) in 18%, dystroglicanopathy (LGMD-R9) in 13%, and anoctaminopathy (LGMD-R12) in 4% of the patients. In these 23 patients with LGMD, there were 27 different disease-related variants in the ANO5, CAPN3, DYSF, FKRP, SGCA, SGCB, SGCG, and TCAP genes. There were different causal variants in different exons of these genes, except for the TCAP gene, for which all patients carried the p.Gln53* variant, and the FKRP gene, which showed recurrence of the p.Leu276Ile variant. We analyzed the phenotypic, genotypic and muscle immunohistochemical features of this Southern Brazilian cohort. |
| Databáze: | Directory of Open Access Journals |
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