Table 1 Novel mutations found in this study.

Mutation	Exon	Nucleotide change	No of families
Mis‐sense
A2249D	35	6746C→A	1
R2354H	37	7061G→A	1
C3251R	50	9751T→C	1
C3267R	50	9799T→C	1
T3571M	54	10712C→T	2
T4337M	63	13010C→T	1
P4818L	66	14453C→T	1
Frameshift
R2095GfsX2	32	6238delA	1
T2812MfsX17	42	8435_8438delCCTA	1
C3425FfsX4	52	10272_10273dupTT	1
Y3745fsX1	58	11234dupA	1
F4703HfsX6	64	14110_14111insA	1
Duplication
Y3472dup	53	10414_10416dupTAT	1
Splicing
		IVS26+1C→G	1

Reference sequence for the USH2A gene AY481573.