Table 1.

Sensory and motor nerve conduction findings at birth and at 6 months in our proband (A and B, respectively) and in her younger sibling at birth (C); n.r.: no response; (normal values)

Sensory nerve conduction findings at birth (A)				Sensory nerve conduction findings			Sensory nerve conduction findings at birth (C)
				at 6 months of age (B)
	Conduction Velocity	Latency	Response Amplitude	Conduction Velocity	Latency	Response Amplitude	Conduction Velocity	Latency	Response Amplitude
Right Sural	24 m/s (>22)	2.0 (<2.2)	3.1μV (>3)	n.r.			Right Sural	n.r.	n.r.	n.r.
Left Sural	23 m/s (>22)	1.9 (<2.2)	3.1μV (>3)	n.r.			Left Sural	n.r.	n.r.	n.r.
Right Median	n.r.	n.r.	n.r.	n.r.	n.r.	n.r.	Right Median	n.r.	n.r.	n.r.
Left Median	28 m/s (>21)	2 (<2.9)	18μV (>10)	31 m/s (>21)	2.2 (<2.8)	20μV (>15)	Left Median	18.2 m/s	1.9	10.2 uV
Right Ulnar	n.r.	n.r.	n.r.	n.r.	n.r.	n.r.	Right Ulnar	n.r.	n.r.	n.r.
Motor nerve conduction findings at birth (A)				Motor nerve conduction findings			Motor nerve conduction findings at birth (C)
				at 6 months of age (B)
Conduction Velocity	Latency	Response Amplitude	Conduction Velocity	Latency	Response Amplitude	Conduction Velocity	Latency	Response Amplitude
Right Posterior Tibial	25 m/s (>24)	1.3 (<2.5)	5 mV (>3.5)	21 m/s (>27)	4 (<3.7)	9.5 mV (>5)	Right Tibialis	19.2 m/s	6.3	3.7 mV
Left Posterior Tibial	25 m/s (>24)	1.6 (<2.5)	4.5 mV (>3.5)	23 m/s (>27)	4 (<3.7)	8.9 mV (>5)	Left Tibialis	19.4 m/s	6.6	3.2 mV
Right Peroneal	26 m/s (>25)	1.7 (<2.2)	1.4 mV (>1.2)	22 m/s (>27)	4 (<2.5)	2.5 mV (>2)	Right Peroneal	n.r.	n.r.	n.r.
Left Peroneal	26 m/s (>25)	1.8 (<2.2)	1.4 mV (>2)	21 m/s (>27)	4.1 (<2.5)	2.6 mV (>2)	Left Peroneal	n.r.	n.r.	n.r.
Right Median	n.r.	n.r.	n.r.	n.r.	n.r.	n.r.	Right Median	n.r.	n.r.	n.r.
Left Median	24 m/s (>21)	2 (<2.9)	2.4 mV (>1.7)	32 m/s (>30)	2.4 (<3.2)	3.1 mV (>2)	Left Median	26.4 m/s (>21)	5.4 (<2.9)	0.5 mV (>1.7)
Right Ulnar	n.r.	n.r.	n.r.	n.r.	n.r.	n.r.	Right Ulnar	n.r.	n.r.	n.r.