title: Skin biopsy: a new tool to diagnose sarcoglycanopathy.
abstract: Muscular dystrophies are progressive, genetic disorders of muscle degeneration. The current gold standard for diagnosis is muscle biopsy or genetic studies. Muscle biopsy is an invasive procedure and genetic testing facilities are available only in a few centers. Thus, a diagnostic test that is easily available, simpler, and less invasive is desirable. Over the past 2 decades, skin biopsy has been evolving as a suitable option. Two cases of sarcoglycanopathy are described here, which have been correctly diagnosed by skin biopsy. Muscle biopsy has been used as the gold-standard diagnostic method. Skin biopsy can substitute for muscle biopsy as the preliminary diagnostic tool directing appropriate molecular testing. However, these results require validation in studies with an adequate sample size. This holds promise for the future when repeated biopsies will be required for evaluating protein rescue in trials of novel treatment options in these disorders.
authors.affiliation: Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Biswaroop
authors.initials: B
authors.lastname: Chakrabarty
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: M C
authors.initials: MC
authors.lastname: Sharma
authors.affiliation: Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India sheffaligulati@gmail.com.
authors.forename: Sheffali
authors.initials: S
authors.lastname: Gulati
authors.affiliation: Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Madhulika
authors.initials: M
authors.lastname: Kabra
authors.affiliation: Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: R M
authors.initials: RM
authors.lastname: Pandey
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Chitra
authors.initials: C
authors.lastname: Sarkar
mesh_terms: D001706:Biopsy / Q000379:methods*; D002675:Child, Preschool; D006801:Humans; D008297:Male; D058088:Sarcoglycanopathies / Q000175:diagnosis*; D049031:Sarcoglycans / Q000378:metabolism; D012867:Skin / Q000378:metabolism / Q000473:pathology*
chemical_list: D049031:Sarcoglycans
keywords: Duchenne; muscle biopsy; muscular dystrophy; sarcoglycanopathy; skin biopsy