[SMC] Efficacy of ephedrine treatment in COLQ-related Congenital Myasthenic Syndrome (CMS): longitudinal quantitative as

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Acta Myol. 2024 Sep;43(3):116-118. doi: 10.36185/2532-1900-502.

ABSTRACT

INTRODUCTION AND AIMS: We describe a case of long-living COLQ-related congenital myasthenic syndrome (CMS) benefitting from ephedrine with an overall improvement quantified with functional measures.

RESULTS: A 71-year-old man was referred with limb-girdle/axial myopathy and fatigability since infancy. In his thirties, a decremental response was observed at 3Hz-nerve stimulation, although testing seronegative for anti-neuromuscular junction antibodies. Later, whole exome sequencing (WES)identified a homozygous likely pathogenic variant in COLQ. After 6-month ephedrine treatment, the patient doubled the distance in the 6-minute-walk test and reached 10 metres in half of the time. His forced vital capacity (FVC) and first-second-forced expiratory volume (FEV1) increased, as well as all patient-reported outcomes. At the 12-month mark, the overall improvement remained consistent/further enhanced, except for a slight decrease in FVC.

CONCLUSIONS: This case confirms the efficacy of ephedrine treatment with global improvements in a COLQ-CMS in their late adulthood, demonstrated by quantitative outcome measures. Such indicators may be of interest in upcoming CMS therapeutical trials.

PMID:39468969 | DOI:10.36185/2532-1900-502


Source: https://pubmed.ncbi.nlm.nih.gov/3946896 ... t9+e462414