3-193593695-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_130837.3(OPA1):c.32+286C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0241 in 152,270 control chromosomes in the GnomAD database, including 161 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.024 (161 hom., cov: 32)
• Consequence: OPA1 NM_130837.3 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.665

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]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.78).
• BP6: Variant 3-193593695-C-T is Benign according to our data. Variant chr3-193593695-C-T is described in ClinVar as [Benign]. Clinvar id is 1281354.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0822 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OPA1	NM_130837.3	c.32+286C>T		intron_variant		ENST00000361510.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OPA1	ENST00000361510.8	c.32+286C>T		intron_variant		5	NM_130837.3	A1

Frequencies

GnomAD3 genomes AF: 0.0241 AC: 3662 AN: 152152 Hom.: 160 Cov.: 32

Gnomad AFR AF: 0.0844

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00733

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00104

Gnomad FIN AF: 0.0000942

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000176

Gnomad OTH AF: 0.0158

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0241 AC: 3673 AN: 152270 Hom.: 161 Cov.: 32 AF XY: 0.0224 AC XY: 1666 AN XY: 74454

Gnomad4 AFR AF: 0.0845

Gnomad4 AMR AF: 0.00732

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000623

Gnomad4 FIN AF: 0.0000942

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.0156

Alfa AF: 0.0236 Hom.: 16

Bravo AF: 0.0271

Asia WGS AF: 0.00808 AC: 28 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 15, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
Cadd	Benign	3.7
Dann	Benign	0.84
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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: rs6781575; hg19: chr3-193311484;