rs879255592

Variant names:

• chr3-193647127-G-A
• rs879255592
• NM_130837.3:c.1817G>A

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1 PM2 PP3_Moderate PP5

The NM_130837.3(OPA1):​c.1817G>A​(p.Cys606Tyr) 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. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: OPA1 NM_130837.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 10.0
• Publications: 5 publications found

Genes affected

OPA1 (HGNC:8140): (OPA1 mitochondrial dynamin like GTPase) The protein encoded by this gene is a nuclear-encoded mitochondrial protein with similarity to dynamin-related GTPases. The encoded protein localizes to the inner mitochondrial membrane and helps regulate mitochondrial stability and energy output. This protein also sequesters cytochrome c. Mutations in this gene have been associated with optic atrophy type 1, which is a dominantly inherited optic neuropathy resulting in progressive loss of visual acuity, leading in many cases to legal blindness. [provided by RefSeq, Aug 2017]

OPA1 Gene-Disease associations (from GenCC):

• autosomal dominant optic atrophy, classic form

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
• optic atrophy

  Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
• optic atrophy with or without deafness, ophthalmoplegia, myopathy, ataxia, and neuropathy

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
• OPA1-related optic atrophy with or without extraocular features

  Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
• Behr syndrome

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• mitochondrial DNA depletion syndrome 14 (cardioencephalomyopathic type)

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Leigh syndrome

  Inheritance: AR Classification: MODERATE Submitted by: ClinGen
• autosomal dominant optic atrophy plus syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000306963 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 6 uncertain in NM_130837.3
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.905
• PP5: Variant 3-193647127-G-A is Pathogenic according to our data. Variant chr3-193647127-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 225120.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OPA1	NM_130837.3	c.1817G>A	p.Cys606Tyr	missense_variant	Exon 19 of 31	ENST00000361510.8	NP_570850.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OPA1	ENST00000361510.8	c.1817G>A	p.Cys606Tyr	missense_variant	Exon 19 of 31	5	NM_130837.3	ENSP00000355324.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Optic atrophy with or without deafness, ophthalmoplegia, myopathy, ataxia, and neuropathy Pathogenic:1

Jul 16, 2025

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.93
BayesDel_addAF	Pathogenic	0.52	D
BayesDel_noAF	Pathogenic	0.51
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.13	T;.;.;D;D;.;.;.;.;.;.
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.90
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D;D;D;D;.;D;D;D;D;D;D
M_CAP	Pathogenic	0.40	D
MetaRNN	Pathogenic	0.91	D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Pathogenic	3.0	.;.;.;M;M;.;.;.;.;.;.
PhyloP100		10
PrimateAI	Pathogenic	0.89	D
PROVEAN	Pathogenic	-8.8	D;D;D;.;D;D;.;.;.;.;.
REVEL	Pathogenic	0.87
Sift	Uncertain	0.019	D;D;D;.;D;D;.;.;.;.;.
Sift4G	Uncertain	0.034	D;D;D;.;D;D;.;.;.;.;.
Polyphen		1.0	D;.;.;D;D;.;.;.;.;.;.
Vest4		0.84
MutPred		0.68		.;.;Gain of MoRF binding (P = 0.0743);.;.;.;.;.;.;.;.;
MVP		0.94
MPC		2.0
ClinPred		1.0	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.84
gMVP		0.91
Mutation Taster		=0/100	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs879255592; hg19: chr3-193364916;