Does proximal myotonic myopathy show anticipation?
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Does proximal myotonic myopathy show anticipation? / Kruse, Bernd; Wöhrle, Doris; Steinbach, Peter; Gal, Andreas.
in: HUM MUTAT, Jahrgang 29, Nr. 8, 8, 2008, S. 100-102.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Does proximal myotonic myopathy show anticipation?
AU - Kruse, Bernd
AU - Wöhrle, Doris
AU - Steinbach, Peter
AU - Gal, Andreas
PY - 2008
Y1 - 2008
N2 - Proximal myotonic myopathy (DM2, PROMM) has not been reported in patients younger than 18 years, and apparent lack of congenital and childhood forms is thought to be one of the distinctive clinical characteristics of this trait. We now describe a 2-year-old boy, the youngest member of a family with a history for myotonia in 2 generations. The patient's 35-year-old mother was diagnosed with DM2 of late juvenile onset. She developed aggravating myotonic symptoms during pregnancy. Remarkably few intrauterine child movements were noticed. After birth the child showed general muscular hypotonia with delayed statomotoric development (sitting and crawling at 13 months, first lifting into standing position at 18 months). Muscle reflexes were normal. In the CL3N58 region of ZNF9, DM2-typical unstable expanded CCTG arrays of about 14.5 kb (about 2,500 repeats) were detected both in the mother and the patient by Southern blotting. Expansion of the DM1-specific DMPK CTG repeat was excluded. (c) 2008 Wiley-Liss, Inc.
AB - Proximal myotonic myopathy (DM2, PROMM) has not been reported in patients younger than 18 years, and apparent lack of congenital and childhood forms is thought to be one of the distinctive clinical characteristics of this trait. We now describe a 2-year-old boy, the youngest member of a family with a history for myotonia in 2 generations. The patient's 35-year-old mother was diagnosed with DM2 of late juvenile onset. She developed aggravating myotonic symptoms during pregnancy. Remarkably few intrauterine child movements were noticed. After birth the child showed general muscular hypotonia with delayed statomotoric development (sitting and crawling at 13 months, first lifting into standing position at 18 months). Muscle reflexes were normal. In the CL3N58 region of ZNF9, DM2-typical unstable expanded CCTG arrays of about 14.5 kb (about 2,500 repeats) were detected both in the mother and the patient by Southern blotting. Expansion of the DM1-specific DMPK CTG repeat was excluded. (c) 2008 Wiley-Liss, Inc.
M3 - SCORING: Zeitschriftenaufsatz
VL - 29
SP - 100
EP - 102
JO - HUM MUTAT
JF - HUM MUTAT
SN - 1059-7794
IS - 8
M1 - 8
ER -
