chrX-83509019-T-C
Position:
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2PP3_StrongPP5_Moderate
The NM_000307.5(POU3F4):c.695T>C(p.Ile232Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 24)
Consequence
POU3F4
NM_000307.5 missense
NM_000307.5 missense
Scores
12
1
1
Clinical Significance
Conservation
PhyloP100: 7.84
Genes affected
POU3F4 (HGNC:9217): (POU class 3 homeobox 4) This gene encodes a member of the POU-III class of neural transcription factors. This family member plays a role in inner ear development. The protein is thought to be involved in the mediation of epigenetic signals which induce striatal neuron-precursor differentiation. Mutations in this gene are associated with X chromosome-linked nonsyndromic mixed deafness. [provided by RefSeq, Dec 2012]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.987
PP5
Variant X-83509019-T-C is Pathogenic according to our data. Variant chrX-83509019-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 43350.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chrX-83509019-T-C is described in Lovd as [Likely_pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
POU3F4 | NM_000307.5 | c.695T>C | p.Ile232Thr | missense_variant | 1/1 | ENST00000644024.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
POU3F4 | ENST00000644024.2 | c.695T>C | p.Ile232Thr | missense_variant | 1/1 | NM_000307.5 | P1 | ||
ENST00000625081.1 | n.196A>G | non_coding_transcript_exon_variant | 1/1 |
Frequencies
GnomAD3 genomes Cov.: 24
GnomAD3 genomes
Cov.:
24
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome Cov.: 24
GnomAD4 genome
Cov.:
24
ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
X-linked mixed hearing loss with perilymphatic gusher Pathogenic:1
Likely pathogenic, no assertion criteria provided | clinical testing | Laboratory of Molecular Genetics, Montpellier University Hospital | May 25, 2023 | present in 3 affected male patients in one family - |
Rare genetic deafness Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Dec 11, 2012 | The Ile232Thr variant in POU3F4 has not been reported in the literature nor prev iously identified by our laboratory. It is also absent from large and broad Euro pean American and African American populations by the NHLBI Exome Sequencing Pro ject (http://evs.gs.washington.edu/EVS). Computational analyses (biochemical ami no acid properties, conservation, AlignGVGD, PolyPhen2, and SIFT) suggest that t he Ile232Thr variant may impact the protein, though this information is not pred ictive enough to determine pathogenicity. This variant is within the highly con served POU specific domain (amino acid 194-260). Except for one common variant ( p.Gly237Ala; dbSNP rs5921979), all other missense variants in this region have o nly been identified in individuals with X-linked hearing loss. Given the locatio n of the variant and the unique phenotypic presentation that is reasonably speci fic for POU3F4 (mixed hearing loss with absent modiolus and dilated, bulbous int ernal auditory canal), we feel this variant is likely pathogenic, though additio nal studies are required to fully establish its clinical significance. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
FATHMM_MKL
Pathogenic
D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D
MetaSVM
Pathogenic
D
MutationTaster
Benign
D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;.
REVEL
Pathogenic
Sift
Pathogenic
D;.
Sift4G
Pathogenic
D;.
Vest4
MutPred
Loss of stability (P = 0.081);Loss of stability (P = 0.081);
MVP
MPC
ClinPred
D
GERP RS
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at