Blog Archives

Call 2018, July: ‘GenOmics of rare diseases’

The French Foundation for rare diseases (Fondation maladies rares) is pleased to launch its call for research projects dedicated to applications of next generation sequencing to unraveling genetic and molecular bases of rare diseases. The goal of the open call for proposals is to support hypotheses driven research projects aimed at exploring genetic and molecular … [Read more]

N-acetyl cysteine alleviates oxidative stress and protects mice from dilated cardiomyopathy caused by mutations in nuclear A-type lamins gene

Cardiomyopathy caused by lamin A/C gene (LMNA) mutations (hereafter referred as LMNA cardiomyopathy) is an anatomic and pathologic condition associated with muscular and electrical dysfunction of the heart, often leading to heart failure-related disability. There is currently no specific therapy available for patients that target the molecular pathophysiology of LMNA cardiomyopathy. An international study, which … [Read more]

Identification of molecules that inhibit DUX4 gene expression in FSHD

  Facioscapulohumeral muscular dystrophy (FSHD) is among the most prevalent of the adult-onset muscular dystrophies. FSHD causes a loss of muscle mass and function, resulting in severe debilitation and reduction in quality of life. Currently only the symptoms of FSHD can be treated and with minimal benefit. The available options are not curative and none … [Read more]

Extending the clinical and mutational spectrum of TRIM32-related myopathies in a non-Hutterite population

TRIM32-related myopathies represent a phenotypic spectrum of a rare autosomal recessive muscle disorder. The disease is described as a mild and progressive myopathy without characteristic clinical features. Originally classified as limb-girdle muscular dystrophy (LGMD) 2H (OMIM #254110), the disorder was first identified in the Hutterite population and the homozygous TRIM32 founder mutation, p.Asp487Asn, was identified … [Read more]

Targeted gene panel screening to identify undiagnosed late onset Pompe disease

  Mutations in the GAA gene may cause a late onset Pompe disease presenting with proximal weakness without the characteristic muscle pathology, and therefore a test for GAA activity is the first tier analysis in all undiagnosed patients with hyperCKemia and/or limb-girdle muscular weakness. By using MotorPlex, a targeted gene panel for next generation sequencing, … [Read more]

Utility of two SMN1 variants to improve genetic counselling for carriers of SMA

  Spinal muscular atrophy (SMA) is caused by deletions/mutations in SMN1. Most heterozygous SMA carriers have only one SMN1 copy in one of the alleles (1/0 carriers). However, a few carriers lack SMN1 in one of their chromosomes, but present two gene copies in the other. These “2/0 carriers” are undistinguishable from non-carrier individuals (1/1) … [Read more]

Autoimmune Myasthenia Gravis: Results of the French FORCE Trial

The results of the FORCE trial evaluating the effects of rituximab in refractory myasthenia gravis have been published.   The FORCE trial The FORCE trial is a Phase II pilot trial coordinated by Prof. O. Benveniste (Inflammatory Myopathies & Targeted Innovative Therapies, Myology Research Center) and supported by the AFM-Téléthon. The objective was to evaluate … [Read more]

Dantrolene enhances exon-skipping efficacy in the mdx mouse

  Duchenne muscular dystrophy (DMD) is caused by mutations in DMD, resulting in loss of dystrophin, which is essential to muscle health. DMD “exon skipping” uses anti-sense oligo-nucleotides (AONs) to force specific exon exclusion during mRNA processing to restore reading frame and rescue of partially functional dystrophin protein. Although exon-skipping drugs in humans show promise, … [Read more]

Effects of cognitive behavioural therapy on the health status of severely fatigued patients with myotonic dystrophy type 1

Myotonic dystrophy type 1, the most common adult-onset form of muscular dystrophy, is a multisystem disease with progressively worsening symptoms. Fatigue constitutes the most common non-muscular symptom in patients with this disease,1 and can exact a heavy toll on their quality of life. This multicentre, single-blind, randomised trial aimed to determine whether cognitive behavioural therapy … [Read more]

Launch of a study on diaphragm functioning

In a few weeks, a post-mortem collection of diaphragm and abdominal muscle samples will begin at the GHU Pitié-Salpêtrière-Charles Foix as part of the DIAVITAL protocol. The team coordinating the collection of samples (B. Riou, V. Justice) will organise the muscle biopsies, which will immediately be managed by the Institute of Myology’s MYOBANK-AFM tissue bank … [Read more]