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The inaugural Clinical and Scientific Conference on Adenylosuccinate Synthetase 1 (ADSS1) myopathy was held on June 3, 2024, at the National Institutes of Health (NIH) National Center for Advancing Translational Sciences (NCATS) in Rockville, Maryland, USA. ADSS1 myopathy is an ultra-rare, inherited neuromuscular disease. Features of geographical patient clusters in South Korea, Japan, India and the United States of America were characterised and discussed. Pre-clinical animal and cell-based models were discussed, providing unique insight into disease pathogenesis. The biochemical pathogenesis was discussed, and potential therapeutic targets identified. Potential clinical and pre-clinical biomarkers were discussed. An ADSS1 myopathy consortium was established and a roadmap for therapeutic development created.
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http://dx.doi.org/10.1186/s13023-024-03429-x | DOI Listing |
Neuropathology
August 2025
Department of Laboratory Medicine, National Center Hospital, NCNP, Tokyo, Japan.
ADSS1 myopathy, previously known as adenylosuccinate synthetase-like 1 (ADSSL1) myopathy, is an autosomal recessive muscle disease caused by variants in ADSS1 (adenylosuccinate synthase 1). ADSS1 myopathy is complicated by respiratory muscle weakness or cardiomyopathy as well as limb muscle weakness. We analyzed two siblings with ADSS1 myopathy, both harboring compound heterozygous pathogenic variants (c.
View Article and Find Full Text PDFOrphanet J Rare Dis
November 2024
Cure ADSSL1, Glendale, CA, USA.
Mol Genet Genomic Med
November 2024
Department of Neurology, Sichuan Taikang Hospital, Chengdu, Sichuan, China.
Background: Distal myopathies are genetic muscle disorders caused by mutations in various genes. A study found that mutations in adenylosuccinate synthetase-like 1 (ADSSL1) are associated with distal myopathy in nine patients from six unrelated families in South Korea. Previous research showed that affected individuals experienced distal muscle weakness starting in adolescence, along with mild facial muscle weakness, slightly elevated or normal serum creatine kinase (CK) levels, and the presence of a few rimmed vacuoles in muscle fibers or minimal chronic myopathic damage.
View Article and Find Full Text PDFNeuromuscul Disord
November 2021
Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima 734-8553, Japan.
ADSSL1 myopathy is an inherited myopathy with limb weakness, respiratory muscle paralysis, dysphagia, and myocardial symptoms. We present an autopsy case of a 66-year-old male carrying compound heterozygous variants c.781G>A (p.
View Article and Find Full Text PDFJ Neuromuscul Dis
February 2022
Institut de Myologie, Paris, France.
Background: Clinical and molecular data on the occurrence and frequency of inherited neuromuscular disorders (NMD) in the Lebanese population is scarce.
Objective: This study aims to provide a retrospective overview of hereditary NMDs based on our clinical consultations in Lebanon.
Methods: Clinical and molecular data of patients referred to a multi-disciplinary consultation for neuromuscular disorders over a 20-year period (1999-2019) was reviewed.