Table 3.
Causative mutations and putative pathogenic variants identified in this study
Patient | Clinical type | Gene | Exon | Nucleotide variant | Protein variant | Reference | Segregation analysis |
---|---|---|---|---|---|---|---|
Patients with two pathogenic mutations in the same gene | |||||||
RP-807 | USH2 | MYO7A | 40 | c.5516 T > C | p.Leu1839Pro | Novel. UV3 | Yes |
MYO7A | 27 | c.3503G > A | p.Arg1168Gln | Novel. UV3 | |||
RP-808¶ | USH1 | CDH23 | 47 | c.6059-9G > A | --- | von Brederlow et al., (2002) [40] | No |
CDH23 | 10 | c.871G > A | p.Gly291Arg | Novel. UV3 | |||
RP-890 | USH3 | USH2A | 26 | c.5278delG | p.Asp1760Metfs*10 | Garcia-Garcia et al., (2011) [41] | No |
USH2A | 26 | c.5278delG | p.Asp1760Metfs*10 | Garcia-Garcia et al., (2011) [41] | |||
RP-1182 | USH1 | PCDH15 | 22_23 | Duplication exons 22_23 | --- | Novel. UV4 | No |
PCDH15 | 22_23 | Duplication exons 22_23 | --- | Novel. UV4 | |||
RP-1183 | USH1 | CDH23 | 26 | c.3016G > A | p.Glu1006Lys | Schultz et al., (2011) [42] | No |
CDH23 | 26 | c.3016G > A | p.Glu1006Lys | Schultz et al., (2011) [42] | |||
RP-1234 | USH1 | MYO7A | 43 | c.5884delTTCT | p.Phe1962Leufs*7 | Novel. UV4 | Yes |
MYO7A | 43 | c.5884delTTCT | p.Phe1962Leufs*7 | Novel. UV4 | |||
RP-1237 | USH1 | CDH23 | 46 | c.6049G > A | p.Gly2017Ser | Roux et al., (2006) [43] | No |
CDH23 | 46 | c.6049G > A | p.Gly2017Ser | Roux et al., (2006) [43] | |||
RP-1374¶ | USH1 | PCDH15 | 2 | c.7C > T | p.Arg3* | Ahmed et al., (2001) [44] | Yes |
PCDH15 | 27 | c.3717 + 2dupT | --- | Jaijo et al., (2012) [45] | |||
RP-1422 | USH1 | MYO7A | 43 | c.5944G > A | p.Gly1982Arg | Riazuddin et al., (2008) [46] | Yes |
MYO7A | 43 | c.5944G > A | p.Gly1982Arg | Riazuddin et al., (2008) [46] | |||
RP-1522¶ | USH2 | USH2A | 13 | c.2299delG | p.Glu767Serfs*21 | Liu et al., (1999) [47] | No |
USH2A | 20 | Deletion exon 20 | --- | Novel. UV4 | |||
RP-1551 | USH1 | PCDH15 | 27 | c.3511delA | p.Asp1172Ilefs*13 | Novel. UV4 | Yes |
PCDH15 | 27 | c.3511delA | p.Asp1172Ilefs*13 | Novel. UV4 | |||
RP-1614¶ | USH1 | MYO7A | 44 | c.6025delG | p.Ala2009Profs*32 | Bharadwaj et al., (2000) [48] | No |
MYO7A | 40 | c.5537C > A | p.Pro1846His | Novel. UV3 | |||
RP-1760¶ | USH2 | USH2A | 55 | c.10888delA | p.Gly3631Valfs*43 | Novel. UV4 | No |
USH2A | 13 | c.2296 T > C | p.Cys766Arg | Glöcke et al., (2013) [35] | |||
RP-1781 | USH2 | CDH23 | 29 | Duplication exon 29 | --- | Novel. UV4 | No |
CDH23 | 68 | c.9569C > T | p.Ala3190Val | Novel. UV3 | |||
RP-1791 | USH1 | MYO7A | 20 | c.2283-1G > T | --- | Roux et al., (2006) [43] | Yes |
MYO7A | 28 | c.3594C > A | p.Cys1198* | Roux et al., (2011) [43] | |||
RP-1802 | USH2 | USH2A | 63 | c.13811 + 2 T > G | --- | Besnard et al., (2014) [37] | No |
USH2A | 50 | c.9799 T > C | p.Cys3267Arg | Aller et al., (2006) [49] | |||
RP-1835 | USH2 | USH2A | 57 | c.11065C > T | p.Arg3689* | Le Quesne Stabej et al., 2012 [50] | Yes |
USH2A | 22 | c.4758 + 3A > G | --- | Novel. UV3 | |||
RP-1864 | USH2 | MYO7A | 6 | c.494C > T | p.Thr165Met | Ouyang et al., (2005) [51] | No |
MYO7A | 6 | c.494C > T | p.Thr165Met | Ouyang et al., (2005) [51] | |||
RP-1895 | USH2 | GPR98 | 79_83 | Duplication exons 79_83 | --- | Besnard et al., (2012) [52] | No |
GPR98 | 79_83 | Duplication exons 79_83 | --- | Besnard et al., (2012) [52] | |||
RP-1904 | USH2 | GPR98 | 11 | c.2145_2149delGTTTT | p.Leu715Phefs*6 | Novel. UV4 | Yes |
GPR98 | 14 | c.2612delG | p.Gly871Glufs*8 | Novel. UV4 | |||
RP-1910 | USH1 | CDH23 | 60 | c.8722 + 1delG | --- | Oshima et al., (2008) [53] | Yes |
CDH23 | 60 | c.8722 + 1delG | --- | Oshima et al., (2008) [53] | |||
RP-1924 | USH1 | MYO7A | 39 | c.5392C > T | p.Gln1798* | Janecke et al., (1999) [54] | Yes |
MYO7A | 27 | c.3503G > A | p.Arg1168Gln | Novel. UV3 | |||
RP-1927 | USH2 | USH2A | 21 | c.4474G > T | p.Glu1492* | Bernal et al., (2005) [55] | Yes |
USH2A | 2 | c.269A > G | p.Tyr90Cys | Novel. UV3 | |||
RP-1948 | USH1 | MYO7A | 7 | C.707 T > A | p.Leu236Gln | Novel. UV3 | No |
MYO7A | 42 | c.5749G > T | p.Glu1917* | Jacobson et al., (2009) [56] | |||
RP-1960 | USH2 | USH2A | 25 | c.5167G > C | p.Gly1723Arg | Novel. UV3 | No |
USH2A | 7 | c.1214delA | p.Asn405Ilefs*3 | Bernal et al., (2005) [55] | |||
Patients with three pathogenic mutations in two different genes | |||||||
RP-1847 | USH2 | USH2A | 62 | c.12067-2A > C | --- | Kaiserman et al., (2007) [57] | Yes |
USH2A | 14 | Deletion exon 14 | --- | Glöckle et al., (2013) [35] | |||
USH1G | 2 | c.805C > T | p.Arg269* | Novel. UV4 | |||
RP-1923 | USH2 | USH2A | 62 | c.12093delC | p.Tyr4031* | Garcia-Garcia et al., (2011) [41] | No |
USH2A | 44 | Deletion exon 44 | --- | Glöckle et al., (2013) [35] | |||
DFNB31 | 9 | c.2234G > A | p.Arg745His | Novel. UV3 | |||
Patients with only one pathogenic mutation | |||||||
RP-1455 | USH1 | USH2A | 28 | c.5666A > G | p.Asp1889Gly | Novel. UV3 | No |
RP-1496 | USH3 | GPR98 | 19 | c.3443G > A | p.Gly1148Asp | Novel. UV3 | No |
RP-1741 | USH2 | USH2A | PE40 | c.7592-2144A > G | --- | Vaché et al., (2012) [58] | No |
RP-1929 | USH2 | GPR98 | 58 | c.11974G > A | p.Asp3992Asn | Novel. UV3 | No |
RP-1953 | USH2 | USH1C | 18 | c.1859G > T | p.Arg620Leu | Ouyang et al., (2002) [59] | No |
Patients with pathologic mutations in different genes | |||||||
RP-1426¶ | USH1 | MYO7A | 49 | c.6610G > C | p.Ala2204Pro | Jaijo et al., (2007) [60] | Yes |
CDH23 | 39 | c.5068-2A > T | --- | Novel. UV4 | |||
RP-1950 | USH2 | USH2A | 70 | c.2299delG | p.Glu767Serfs*21 | Liu et al., (1999) [47] | No |
GPR98 | 70 | c.14278C > T | p.Pro4760Ser | Novel. UV3 |
Patients previously included in the test group are marked with ¶.
Novel variants are marked in bold.
PE: Pseudoexon 40.