rs780492515

Positions:

chr19-45553567-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_025136.4(OPA3):c.487C>T(p.Leu163Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,460,802 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. L163L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

OPA3
NM_025136.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.599

Variant links:

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]

OPA3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18698195).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
OPA3	NM_025136.4 linkuse as main transcript	c.487C>T	p.Leu163Phe	missense_variant	2/2	ENST00000263275.5
OPA3	XM_006723403.5 linkuse as main transcript	c.328C>T	p.Leu110Phe	missense_variant	3/3
OPA3	NM_001017989.3 linkuse as main transcript	c.143-24111C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OPA3	ENST00000263275.5 linkuse as main transcript	c.487C>T	p.Leu163Phe	missense_variant	2/2	1	NM_025136.4	P1	Q9H6K4-1
OPA3	ENST00000323060.4 linkuse as main transcript	c.143-24111C>T		intron_variant		1			Q9H6K4-2
OPA3	ENST00000544371.1 linkuse as main transcript	c.328C>T	p.Leu110Phe	missense_variant	2/2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000814

AC:

AN:

245650

Hom.:

AF XY:

0.00000745

AC XY:

AN XY:

134166

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1460802

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726812

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

3-Methylglutaconic aciduria type 3;C1833809:Optic atrophy 3

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 15, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 556177). This variant has not been reported in the literature in individuals affected with OPA3-related conditions. This variant is present in population databases (rs780492515, gnomAD 0.006%). This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 163 of the OPA3 protein (p.Leu163Phe). -

3-Methylglutaconic aciduria type 3

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Counsyl

Jan 16, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

T;T

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.33

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.59

T;T

M_CAP

Uncertain

0.16

MetaRNN

Benign

0.19

T;T

MetaSVM

Benign

-0.38

MutationAssessor

Benign

2.0

M;.

MutationTaster

Benign

1.0

N;N;N

PROVEAN

Benign

-1.4

N;N

REVEL

Benign

0.23

Sift

Benign

0.10

T;T

Sift4G

Benign

0.11

T;D

Polyphen

0.88

P;.

Vest4

0.11

MutPred

0.25

Loss of MoRF binding (P = 0.1045);.;

MVP

0.71

ClinPred

0.38

GERP RS

1.2

Varity_R

0.056

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over