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  • Title: A novel FKRP gene mutation in a Taiwanese patient with limb-girdle muscular dystrophy 2I.
    Author: Lin YC, Murakami T, Hayashi YK, Nishino I, Nonaka I, Yuo CY, Jong YJ.
    Journal: Brain Dev; 2007 May; 29(4):234-8. PubMed ID: 17055682.
    Abstract:
    Limb-girdle muscular dystrophy (LGMD) is a group of hereditary muscle diseases with preferential involvement of the shoulder and pelvic girdle muscles, but with no pathognomonic features as in facioscapulohumeral and congenital muscular dystrophies. We report 18-year-old female with progressive shoulder and pelvic muscle weakness. She had marked restrictive pulmonary dysfunction. Echocardiogram showed mild decrease in ejection fraction of 52% (normal: >55%). She was first seen in our hospital at age 2 years with progressive proximal muscle weakness and elevated creatine kinase (CK) level to 15,290 IU/L, with what clinically and pathologically appeared to be steroid-responsive inflammatory myopathy. She responded dramatically to steroid therapy. Progressive proximal muscle weakness began again at age 8 years. Serum CK was 14,910 IU/L. She was wheelchair-bound by age 12. Muscle biopsy showed dystrophic changes without inflammation with reduced immunoreactivity to an antibody against sugar chain (VIA4-1) of alpha-dystroglycan. On laminin overlay assay, there was a nearly complete loss of laminin-binding activity to alpha-dystroglycan. Genetic analysis of fukutin-related protein (FKRP) gene revealed a novel compound heterozygous mutation of c.823C>T (p.R275C) and c.948delC, confirming the diagnosis of LGMD2I, the first reported case in East Asia.
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