Blog Archives

Drug-induced myopathy is among the most common causes of muscle disease. An association has recently been described between programmed death-1 (PD-1)/PD-1 ligand (PD-L1) inhibitors and immune-related adverse events (irAE) affecting the muscle. Here, the authors report the clinical and pathological findings of nine unrelated patients with PD-1 and PD-L1 inhibitors-associated myopathy. They retrospectively analyzed 317 … [Read more]

This study aimed to assess outcomes among patients with Duchenne muscular dystrophy receiving deflazacort or prednisone in real-world practice. Clinical data for 435 boys with Duchenne muscular dystrophy from Cincinnati Children’s Hospital Medical Center were studied retrospectively using time-to-event and regression analyses. Median ages at loss of ambulation were 15.6 and 13.5 years among deflazacort- … [Read more]

Duchenne muscular dystrophy (DMD) is a progressive muscular disease characterized by chronic cycles of inflammatory and necrotic processes. Prostaglandin D2 (PGD2 ) is produced by hematopoietic PGD synthase (HPGDS), which is pathologically implicated in muscle necrosis. This randomized, double-blind, placebo-controlled early phase 2 study (NCT02752048) aimed to assess the efficacy and safety of the novel … [Read more]

This is the first report on safety and efficacy of intravenous bisphosphonates (IV BP) for treatment of disuse osteoporosis and low bone mineral density (BMD) in children with spinal muscular atrophy (SMA). IV BP appears to be safe and effective in fracture rate reduction. However, caution is necessary given the occurrence of an atypical femur … [Read more]

This study aimed to investigate the efficacy of N-acetylcysteine (NAC) for decreasing elevated oxidative stress and increasing physical endurance in individuals with ryanodine receptor 1-related myopathies (RYR1-RM). In this 6-month natural history assessment (n = 37) followed by a randomized, double-blinded, placebo-controlled trial, 33 eligible participants were block-randomized (1:1) to receive NAC (n = 16) … [Read more]

The objective was here to examine pregnancy outcomes among births to women with idiopathic inflammatory myopathy (IIM) in relation to time of IIM diagnosis using population-based data. This study used Swedish nationwide registers to identify all singleton births that occurred between 1973 and 2016 among women diagnosed with IIM between 1998 and 2016 and among … [Read more]

Spinal muscular atrophy (SMA) is genetic and progressive, caused by large bi-allelic deletions in the SMN1 gene, or the association of a large deletion and a null variant. The objective of this study was to evaluate the evidence about cognitive outcomes in SMA. Brazilian researchers have carried out an exhaustive analysis of the medical-scientific literature … [Read more]

Pathogenic variants in the HINT1 gene lead to hereditary axonopathy with neuromyotonia. However, many studies show that neuromyotonia may remain undiagnosed, while axonopathy is the major clinical finding. The most common cause of neuromyotonia and axonopathy, especially in patients of Slavic origin, is a c.110G>C (p.Arg37Pro) pathogenic variant in homozygous or compound heterozygous state. In … [Read more]

Skeletal muscle injury provokes a regenerative response, characterized by the de novo generation of myofibers that are distinguished by central nucleation and re-expression of developmentally restricted genes. In addition to these characteristics, myofiber cross-sectional area (CSA) is widely used to evaluate muscle hypertrophic and regenerative responses. Here, a team of Carlifornian researchers introduces QuantiMus, a … [Read more]