Limb-girdle muscular dystrophies
RSS feedTwo molecules with therapeutic potential identified in LGMD R2
A collaboration involving I-Stem, Genethon and the Institute of Myology carried out a high-throughput screening of 2,239 drugs already approved for other diseases and other bioactive compounds on immortalised myoblast models of limb-girdle muscular dystrophy type R2 (LGMD R2) carrying the L1341P missense mutation in the DYSF gene or in muscle fibres from dysferlin-deficient mice: … [Read more]
Late dysferlinopathy presenting as generalized permanent myalgia
The team at the Institute of Myology (Paris) reports the observation of a 52-year-old woman suffering for four years from permanent generalized muscle pain, aggravated by physical activity and associated with joint pain. She also complained of fatigue in the upper limbs, with difficulty holding her arms up. Muscle biopsy revealed a marked decrease in … [Read more]
Advances 2024 in limb-girdle muscular dystrophies
This document presents limb-girdle muscular dystrophy research news from the past year (ongoing observational studies and clinical trials, scientific and medical publications, etc.). As the name suggests, limb girdle muscular dystrophies (LGMD) affect the “limb girdle” muscles. Symptoms generally appear before the age of 30, with slow progression and no facial muscle involvement. Common symptoms … [Read more]
Overview of the main myopathies that can begin in the over-50s
A French review has set out to provide an overview of the most emblematic late-onset myopathies (LOMs), those which may appear after the age of 50, and to identify the pitfalls to be avoided and the important steps in the diagnostic approach to these pathologies. Based on an assessment of the literature and medical data … [Read more]
TRAPPC11 diseases reviewed
On the occasion of the description of a Mexican case with an anomaly in the gene encoding the TRAPPC11 complex, a team from Mexico City reviewed the 54 cases of TRAPPC11-pathies published to date: the muscle involvement was of the slowly progressive limb-girdle muscular dystrophy type (LGMDR18) with or without developmental delay and/or cognitive difficulties … [Read more]
Overview of neuromuscular diseases
After a brief reminder of the structure of the motor unit and the various modes of inheritance, this document provides short descriptions of the neuromuscular diseases that are part of our scope at AFM-Téléthon, as well as how to manage and treat them. For each group of diseases, as well as in the motor unit … [Read more]
Atamyo Therapeutics obtains authorisation to launch a gene therapy clinical trial in limb-girdle muscular dystrophy linked to SGCG
Following several proofs of concept, Atamyo Therapeutics, a spin-off from Geenethon, has obtained authorisation to start a new gene therapy trial in patients suffering from limb-girdle muscular dystrophy (LGMD) R5 linked to SGCG (gamma-sarcoglycanopathy). Its aim is to test the safety, pharmacodynamics and efficacy of ATA-200, a product resulting from the work of Isabelle Richard, … [Read more]
Gene therapy shows encouraging results in humans for limb-girdle muscular dystrophy linked to SGCB
An ongoing clinical trial sponsored by Sarepta Therapeutics is investigating the safety and efficacy of SRP-9003 (rAAVrh74. MHCK7.hSGCB vector) following systemic infusion in six patients with SGCB-related limb-girdle muscular dystrophy (LGMD R4). Two years after administration of a minimum dose of 1.85 x 1013 vg/kg, analyses showed : the product was fairly well tolerated, with … [Read more]
Combination of ribitol and gene therapy shows synergistic effects in LGMD R9 mouse models
American researchers have sought to combine two therapeutic approaches in mouse models of FKRP-related limb-girdle muscular dystrophy type R9 (LGMD R9): oral supplementation with 5% ribitol at five weeks of age, followed four weeks later by administration of a dose of 1e13 vg/kg (low) or 5e13 vg/kg (high) of gene therapy (AAV9-FKRP). Compared with mice … [Read more]
A founder effect identified in South Indian patients with beta-sarcoglycanopathy
Beta sarcoglycanopathy is one of the four forms of limb-girdle myopathy associated with sarcoglycan deficiency. Indian clinicians have just identified an outbreak of this disease in their country: 14 patients from 13 unrelated families in southern India (the states of Karnataka, Tamil Nadu and Andra Pradesh) were diagnosed with limb-girdle muscular dystrophy with beta-sarcoglycan deficiency, … [Read more]
