Table 2.

Electromyography data from Limb girdle muscular dystrophy cases

	Individual 3	Individual 4	Individual 5
Age (years)	22	45	29
Diagnosis	Limb girdle muscular dystrophy	X-linked Emery–Dreifuss Muscular Dystrophy	Autosomal Dominant Emery–Dreifuss Muscular Dystrophy
Mutation	LMNA c.1357C>T, p. Arg453Trp	EMD c.266-3A>G   Splice site	LMNA c.1072G>A   p.Glu358Lys
Decrement on repetitive nerve stimulation (muscles tested)	No (extensor digitorum brevis, abductor digiti minimi, trapezius, nasalis)	No (abductor digiti minimi, trapezius)	No (abductor digiti minimi, trapezius)
Single fibre EMG (muscles tested)	Subtly abnormal, no blocking (extensor digitorum communis)	Jitter values ranged from normal to high, no blocking (extensor digitorum communis, abductor digiti minimi)*	No blocking or jitter (extensor digitorum communis)
Routine EMG	Typical myopathic features	Typical myopathic features and high amplitude increased duration motor unit potentials	ND

ND = not done.