chr19-45529184-G-A
Variant names:
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PVS1_StrongBS1_Supporting
The NM_001017989.3(OPA3):c.415C>T(p.Gln139*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000377 in 1,458,268 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 31)
Exomes 𝑓: 0.000038 ( 1 hom. )
Consequence
OPA3
NM_001017989.3 stop_gained
NM_001017989.3 stop_gained
Scores
3
3
1
Clinical Significance
Conservation
PhyloP100: 2.94
Genes affected
OPA3 (HGNC:8142): (outer mitochondrial membrane lipid metabolism regulator OPA3) The mouse ortholog of this protein co-purifies with the mitochondrial inner membrane. Mutations in this gene have been shown to result in 3-methylglutaconic aciduria type III and autosomal dominant optic atrophy and cataract. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 3 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. Fraction of 0.236 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
BS1
Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.0000377 (55/1458268) while in subpopulation SAS AF= 0.000626 (54/86222). AF 95% confidence interval is 0.000492. There are 1 homozygotes in gnomad4_exome. There are 43 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes Cov.: 31
GnomAD3 genomes
Cov.:
31
GnomAD3 exomes AF: 0.0000957 AC: 23AN: 240216Hom.: 1 AF XY: 0.000137 AC XY: 18AN XY: 131506
GnomAD3 exomes
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GnomAD4 exome AF: 0.0000377 AC: 55AN: 1458268Hom.: 1 Cov.: 31 AF XY: 0.0000593 AC XY: 43AN XY: 725646
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725646
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GnomAD4 genome Cov.: 31
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31
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
3-Methylglutaconic aciduria type 3 Uncertain:1
Aug 11, 2017
Counsyl
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
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Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
Vest4
GERP RS
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at