rs397514463
Positions:
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate
The NM_021728.4(OTX2):c.586G>T(p.Gly196Ter) variant causes a stop gained change. 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 Pathogenic (★).
Frequency
Genomes: not found (cov: 33)
Consequence
OTX2
NM_021728.4 stop_gained
NM_021728.4 stop_gained
Scores
4
2
1
Clinical Significance
Conservation
PhyloP100: 6.12
Genes affected
OTX2 (HGNC:8522): (orthodenticle homeobox 2) This gene encodes a member of the bicoid subfamily of homeodomain-containing transcription factors. The encoded protein acts as a transcription factor and plays a role in brain, craniofacial, and sensory organ development. The encoded protein also influences the proliferation and differentiation of dopaminergic neuronal progenitor cells during mitosis. Mutations in this gene cause syndromic microphthalmia 5 (MCOPS5) and combined pituitary hormone deficiency 6 (CPHD6). This gene is also suspected of having an oncogenic role in medulloblastoma. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Pseudogenes of this gene are known to exist on chromosomes two and nine. [provided by RefSeq, Jul 2012]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 14 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 14-56802043-C-A is Pathogenic according to our data. Variant chr14-56802043-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 30027.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
OTX2 | NM_021728.4 | c.586G>T | p.Gly196Ter | stop_gained | 5/5 | ENST00000672264.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
OTX2 | ENST00000672264.2 | c.586G>T | p.Gly196Ter | stop_gained | 5/5 | NM_021728.4 | A1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Syndromic microphthalmia type 5 Pathogenic:1
Pathogenic, no assertion criteria provided | literature only | OMIM | Feb 01, 2010 | - - |
Anophthalmia-microphthalmia syndrome Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Oct 24, 2021 | For these reasons, this variant has been classified as Pathogenic. This variant disrupts a region of the OTX2 protein in which other variant(s) (p.Ser203*) have been determined to be pathogenic (Invitae). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. ClinVar contains an entry for this variant (Variation ID: 30027). This premature translational stop signal has been observed in individual(s) with microphthalmia, anophthalmia, coloboma spectrum (PMID: 19965921). This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Gly188*) in the OTX2 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 102 amino acid(s) of the OTX2 protein. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
D;D;D;D
Vest4
GERP RS
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