Phenotype #0000073809

Individual ID 00095409
Associated disease MRMV1
Phenotype details Voluntary EMG - abnormal bilateral EMG activity during unilateral contraction of APB muscle. Focal TMS - abnormal bilateral motor evoked potentials in the thenar muscle following unilateral stimulation of the motor cortex. Shorter cortical silent period following unilateral M1 stimulation; lengthening of cortical silent period following bilateral M1 stimulation. During intended unilateral contraction, dissocciation of task-related short-interval intracortical inhibition modulation between task and mirror APB. F waves - normal ipsilateral F waves evoked from unilateral median nerve stimulation. SEP - normal, lateralized latencies of the N20 and P25 parietal components of the median nerve somatosensory evoked potentials. LLR - normal ipsilateral V1 but abnormal bilateral V2 long-latency EMG responses recorded in both thenar muscles.

Frequency of ipsilateral MEPs = 100%. Relative amplitude (MEPipsi/MEPcontra) = 47%. Latency of contralateral MEPs (ms) = 21,9. Latency of ipsilateral MEPs (ms) = 22,5.
Diagnosis/Initial -
Inheritance Familial, autosomal dominant
Diagnosis/Definite -
Age/Examination -
Age/Diagnosis -
Age/Onset -
Phenotype/Onset -
MotorSkills Difficulties in fine bimanual activities; pain/cramp during sustained manual activities
Severity_score Woods & Teuber 3 (hands, forearms and arms)
Protein -
Brain/Imaging MRI
Owner name Ashley Marsh
Database submission license No license selected
Created by Ashley Marsh
Date created 2017-01-13 22:04:50 +01:00 (CET)
Date last edited 2020-01-10 12:28:57 +01:00 (CET)

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