Abstract
Six years befor the present study we performed a retrospective study of 114 subjects presenting with asymptomatic / oligosymptomatic hyperckemia (raised creatine kinase blood levels), a diagnosis being made in 21 of them. We now present the results of a long-term follow-up in 55 of the still undiagnosed 93 individuals. Most of them have remained asymptomatic and did not develop specific neuromuscular disorders. One subject became frankly symptomatic manifesting limb-girdle weakness. A diagnosis of dystrophinopathy carrier and one of possible type I SMA carrier were indirectly made in another two subjects. Almost all subjects still have hyperckemia, though the mean creatine kinase (CK) value is lower than before. CK levels have become normal in 12 subjects. Two died of neoplasia, and six developed non-neuromuscular disorders. We noted no follow-up differences in terms of CK modifications between subjects with pathological EMG and/or muscle biopsy findings and those with normal findings at first examination.
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The financial support of Associazione Amici del Centro Dino Ferrari-University of Milan, the Telethon project GTF02008, the Eurobiobank project QLTR-2001–02769 and R.F. 2002 Criobanca Automatizzata di Materiale Biologico are gratefully acknowledged.
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Received in revised form: 5 August 2005
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D’Adda, E., Sciacco, M., Fruguglietti, M.E. et al. Follow-up of a large population of asymptomatic/oligosymptomatic hyperckemic subjects. J Neurol 253, 1399–1403 (2006). https://doi.org/10.1007/s00415-006-0223-y
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DOI: https://doi.org/10.1007/s00415-006-0223-y