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Metabolic Myopathy clinical trials

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NCT ID: NCT05456997 Terminated - Pheochromocytoma Clinical Trials

Metabolic Myopathy in Endocrinopathy

LYDIA
Start date: March 20, 2023
Phase:
Study type: Observational

Endocrine diseases including Cushing's syndrome and phaeochromocytoma/paraganglioma (PPGL) but not Conn's syndrome are associated with muscle wasting and weakness. The study's aim is to identify epigenetic determinants of muscle homeostasis in these conditions following medical treatment and adrenalectomy. This is an observational pilot study that will recruit 66 patients from 3 diagnostic groups: Cushing's syndrome (16), PPGL (20) and Conn's syndrome (30). Indices of muscle bulk and strength will be assessed at diagnosis and at outpatient follow-up 6-9 weeks after adrenalectomy. At these times blood and urine will be collected and a muscle biopsy taken from the operation site at the time of surgery. Pathway analysis in these samples will identify potentially novel signalling pathways contributing to muscle wasting via prolonged exposure to high levels of corticosteroid and catecholamines. This will highlight commonalities and differences in pathogenesis of muscle wasting from a variety of different causes. Finally, it will inform identification of novel therapies for muscle atrophy.