rs200243596

Positions:

• chr3-193618911-C-A
• chr3-193618911-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_130837.3(OPA1):​c.653C>A​(p.Ser218Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,122 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S218F) has been classified as Likely benign.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
• Consequence: OPA1 NM_130837.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.21

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-AS1 (HGNC:40421): (OPA1 antisense RNA 1)

ACMG classification

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=0.101460546).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OPA1	NM_130837.3	c.653C>A	p.Ser218Tyr	missense_variant	6/31	ENST00000361510.8
OPA1-AS1	NR_046634.1	n.191-1G>T		splice_acceptor_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OPA1	ENST00000361510.8	c.653C>A	p.Ser218Tyr	missense_variant	6/31	5	NM_130837.3	A1
OPA1-AS1	ENST00000444085.1	n.110-1G>T		splice_acceptor_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152122 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 30

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152122 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74318

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Uncertain	0.093	D
BayesDel_noAF	Benign	-0.10
CADD	Pathogenic	28
DANN	Benign	0.96
DEOGEN2	Benign	0.0049	T;.;.;T;T;.;.;.;.;.;.;.
Eigen	Benign	-0.49
Eigen_PC	Benign	-0.32
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Uncertain	0.86	D;D;D;D;.;D;D;D;D;D;D;D
M_CAP	Benign	0.059	D
MetaRNN	Benign	0.10	T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.39	T
MutationTaster	Benign	0.59	D;D;N;N;N;N
PrimateAI	Uncertain	0.49	T
PROVEAN	Benign	-0.050	N;N;N;.;N;N;.;.;.;.;D;.
REVEL	Benign	0.26
Sift	Benign	0.072	T;T;T;.;T;T;.;.;.;.;T;.
Sift4G	Benign	0.34	T;T;T;.;T;T;.;.;.;.;D;.
Polyphen		0.0010	B;.;.;B;B;.;.;.;.;.;.;.
Vest4		0.28
MutPred		0.21		.;.;Gain of glycosylation at S218 (P = 0.0042);.;.;.;.;.;.;Gain of glycosylation at S218 (P = 0.0042);.;.;
MVP		0.38
MPC		0.13
ClinPred		0.80	D
GERP RS		4.8
Varity_R		0.082
gMVP		0.33

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

Other links and lift over

dbSNP: rs200243596; hg19: chr3-193336700;