TABLE 2.
Variant | Variant interpretation | Sequencing method | References | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Patient | Gene | Nucleotide change | Amino acid | Zygosity | CADD score | GnomAD AF | ClinVar clinical significance | ACMG classification | Evidence | ||
1 | TSPEAR | c.533C>T | p.Pro178Leu | Hom | 17.86 | 0.00003668 | NA | VUS | PM2, PP3, BP5 | Hearing loss panel | Newly reported |
TMPRSS3 | c.1204G>A | p.Gly402Arg | Hom | 31 | 0 | NA | VUS | PM2, PP3, BP5 | |||
2 | TSPEAR | c.1163T>C | p.Val388Ala | Hom | 33 | 0 | NA | VUS | PM2, PP3, BP5 | Hearing loss panel | Newly reported |
TMPRSS3 | c.1211C>T | p.Pro404Leu | Hom | 26.1 | 0.00001193 | Pathogenic | Likely pathogenic | PP1, PM2, PM3, PP3, PM1, BP5 | |||
3 | TSPEAR | c.1726_1728delGTCinsTTa | p.Val576Leufs*38 | Hom | 33 | 0 | Likely pathogenic | Pathogenic | PVS1, PM2, PP3 | WES | Delmaghani et al. (2012) |
4 | TSPEAR | c.1566G>A | p.Pro522Pro | Het | 33 | 0.00007454 | NA | VUS | PM2, PM3, PP3 | Hearing loss panel | Sloan‐Heggen et al. (2016) |
TSPEAR | c.1676_1677delAT | p.Tyr559Cysfs*134 | Het | 31 | 0 | Pathogenic/Likely pathogenic | Pathogenic | PVS1, PM2, PP3 | |||
5 | TSPEAR | c.38delT | p.Leu13Argfs*38 | Het | 24.6 | 0.00008334 | NA | Pathogenic | PVS1, PM2, PM3, PP3, BP5 | Hearing loss panel | Newly reported |
TSPEAR | c.589C>T | p.Arg197* | Het | 36 | 0.000305 | Conflicting | Pathogenic | PVS1, PM2, PM3, PP3, BP5 | |||
GJB2 | c.35delG | p.Gly12Valfs*2 | Het | 25.3 | 0.006188 | Pathogenic | Pathogenic | PVS1, PS3, PS4, PM2, PP1‐S, PP3, BP5 | |||
GJB6 | del(GJB6‐D13S1854) | NA | Het | NA | NA | Pathogenic | Pathogenic | PVS1, PS3, PS4, PP1‐S, PM2, BP5 | |||
6 | TSPEAR | c.1915G>A | p.Asp639Asn | Het | 28.2 | 0.002251 | Conflicting | VUS | PM2, PM3, PP3, BS2 | WES | Newly reported |
TSPEAR | c.589C>T | p.Arg197* | Het | 36 | 0.000305 | Conflicting | Pathogenic | PVS1, PM2, PP3 | |||
7 | TSPEAR | c.1915G>A | p.Asp639Asn | Het | 28.2 | 0.002251 | Conflicting | VUS | PM2, PP3, BS2 | WES | Newly reported |
TSPEAR | c.1754G>T | p.Ser585Ile | Het | 25.6 | 0.00006734 | Uncertain significance | VUS | PM2, PP3 | |||
8 | TSPEAR | c.589C>T | p.Arg197* | Het | 36 | 0.000305 | Conflicting | Pathogenic | PVS1, PM2, PM3, PP3 | WES | Newly reported |
TSPEAR | c.83‐13708_1566+248del | NA | Het | NA | NA | NA | Pathogenic | PVS1, PM2, PM3, PP3 | |||
9 | TSPEAR | c.1574G>A | p.Gly525Asp | Het | 24.2 | 0.00003199 | NA | VUS | PM2, PM3, PP3 | WES | Newly reported |
TSPEAR | c.543‐1G>A | NA | Het | 23.9 | 0.000007119 | NA | Pathogenic | PVS1, PM2, PP3 | |||
10 | TSPEAR | c.942C>G | p.Tyr314* | Het | 36 | 0 | Likely pathogenic | Pathogenic | PVS1, PM2, PP3 | WES | Newly reported |
TSPEAR | c.1469T>A | p.Leu490Gln | Het | 29.7 | 0.00005569 | Uncertain significance | VUS | PM2, PM3, PP3 | |||
11 | TSPEAR | c.1726_1728delGTCinsTT | p.Val576Leufs*38 | Hom | 33 | 0 | Likely pathogenic | Pathogenic | PVS1, PM2, PP3 | WES | Peled et al. (2016) |
12 | TSPEAR | c.1726_1728delGTCinsTT | p.Val576Leufs*38 | Het | 33 | 0 | Likely pathogenic | Pathogenic | PVS1, PM2, PP3 | WES | Peled et al. (2016) |
TSPEAR | c.454_457delCTGG | p.Leu152Trpfs*29 | Het | 23.3 | 0.000004063 | Pathogenic | Pathogenic | PVS1, PM2, PP3 | |||
13 | TSPEAR | c.1852T>A | p.Tyr618Asn | Het | 32 | 0.0000199 | Pathogenic | VUS | PM2, PP3 | WES | Peled et al. (2016) |
TSPEAR | c.1915G>A | p.Asp639Asn | Het | 28.2 | 0.002251 | Conflicting | VUS | PM2, PP3, BS2 | |||
14 | TSPEAR | c.240T>G | p.Cys80Trp | Het | 23.3 | 0 | NA | VUS | PM2, PM3, PP3 | Ectodermal dysplasia panel; Sanger sequencing | Newly reported |
TSPEAR | c.633+2C>A | NA | Het | 22.7 | 0.000004001 | NA | Pathogenic | PVS1, PM2, PP3 | |||
15 | TSPEAR | c.1505delA | p.Lys502Argfs*67 | Hom | 18.1 | 0.00001592 | NA | Pathogenic | PVS1, PM2, PP3 | SNP array; Sanger sequencing | Newly reported |
16 | TSPEAR | c.1726_1728delinsTT | p.Val576Leufs*38 | Het | 33 | 0 | Likely pathogenic | Pathogenic | PVS1, PM2, PM3, PP3 | WES | Newly reported |
TSPEAR | c.589C>T | p.Arg197* | Het | 36 | 0.000305 | Conflicting | Pathogenic | PVS1, PM2, PP3, PM3 | |||
ATP1A3 | c.2767G>A | p.Asp923Asn | Het | 23.8 | 0 | Pathogenic | Likely pathogenic | PS1, PM1, PM2, PP3 | |||
17 | TSPEAR | c.1915G>A | p.Asp639Asn | Het | 28.2 | 0.002251 | Conflicting | VUS | PM2, PP3, BS2 | GenoDENT: dental anomalies panel; Sanger sequencing | Newly reported |
TSPEAR | c.1331G>A | p.Arg444Gln | Het | 28.5 | 0.00008862 | NA | VUS | PM2, PP3 | |||
18 | TSPEAR | c.1663C>T | p.Gln555* | Het | 39 | 0 | NA | Pathogenic | PVS1, PM2, PM3, PP3 | GenoDENT: dental anomalies panel; Sanger sequencing | Newly reported |
TSPEAR | c.1899dup | p.Thr634Hisfs*60 | Het | 34 | 0 | NA | Pathogenic | PVS1, PM2, PM3, PP3 | |||
19 | TSPEAR | c.1726_1728delGTCinsTT | p.Val576Leufs*38 | Hom | 33 | 0 | Likely pathogenic | Pathogenic | PVS1, PM2, PP3 | WES | Du et al. (2018) |
20 | TSPEAR | c. 1877T>C | p.Phe626Ser | Hom | 28.5 | 0.0001401 | NA | VUS | PM2, PP3 | WES | Du et al. (2018) |
21 | TSPEAR | c.1528C>T | p.Arg510* | Het | 37 | 0.0003256 | Uncertain significance | Pathogenic | PVS1, PM2, PP3 | WES | Song et al. (2020) |
TSPEAR | c.1330C>T | p.Arg444Trp | Het | 25.8 | 0.00001595 | Uncertain significance | VUS | PM2, PM3, PP3 |
Note: All variants in this study were classified according to American College of Medical Genetics (ACMG) 2015 criteria. Classifications are shown here, along with the evidence used to support each classification such as combined annotation dependent depletion (CADD) score and genome aggregation database (GnomAD) allele frequency. While numerous suspected pathogenic TSPEAR variants have been reported in the literature, these studies did not report ACMG scoring criteria. To provide a means of comparing newly reported TSPEAR variants to published TSPEAR variants, these published variants have been scored here using the available evidence. ClinVar accessed January 12, 2021, GnomAD v2.1.1 accessed January 13, 2021.
Abbreviations: AF, allele frequency; CADD, combined annotation dependent depletion; del, deletion; delins, deletion/insertion; dup, duplication; GnomAD, genome aggregation database; NA, not available; VUS, variant of uncertain significance.
Variants for individual 3 were originally reported as homozygous c.1726G>T and c.1728delC variants in cis, which can alternately be reported as c.1726_1728delGTCinsTT (p.Val576Leufs*38).