Genetic Variant OPA1:c.-11C>T (chr3-193593367-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_130837.3(OPA1):c.-11C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000129 in 1,546,146 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.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

OPA1
NM_130837.3 5_prime_UTR

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.581

Publications

1 publications found

Variant links:

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 links:

ATP13A4 (HGNC:25422): (ATPase 13A4) Predicted to enable ATPase-coupled cation transmembrane transporter activity. Predicted to be involved in cellular calcium ion homeostasis. Predicted to be located in endoplasmic reticulum membrane and endosome membrane. [provided by Alliance of Genome Resources, Apr 2022]

ATP13A4 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.73).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_130837.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
OPA1	NM_130837.3	MANE Select	c.-11C>T	5_prime_UTR	Exon 1 of 31	NP_570850.2	O60313-10
OPA1	NM_130836.3		c.-11C>T	5_prime_UTR	Exon 1 of 30	NP_570849.2	O60313-2
OPA1	NM_130835.3		c.-11C>T	5_prime_UTR	Exon 1 of 30	NP_570848.1	E5KLJ9

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
OPA1	ENST00000361510.8	TSL:5 MANE Select	c.-11C>T	5_prime_UTR	Exon 1 of 31	ENSP00000355324.2	O60313-10
OPA1	ENST00000361908.8	TSL:1	c.-11C>T	5_prime_UTR	Exon 1 of 30	ENSP00000354681.3	O60313-2
OPA1	ENST00000968586.1		c.-11C>T	5_prime_UTR	Exon 1 of 32	ENSP00000638645.1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152278

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD2 exomes

AF:

0.00000667

AC:

AN:

149880

AF XY:

0.0000126

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

7.17e-7

AC:

AN:

1393750

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

687210

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31270

American (AMR)

AF:

0.00

AC:

AN:

35322

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25016

East Asian (EAS)

AF:

0.00

AC:

AN:

35446

South Asian (SAS)

AF:

0.0000127

AC:

AN:

78708

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49202

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4628

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1076542

Other (OTH)

AF:

0.00

AC:

AN:

57616

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000656

AC:

AN:

152396

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74530

show subpopulations

African (AFR)

AF:

0.0000240

AC:

AN:

41600

American (AMR)

AF:

0.00

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.73

CADD

Benign

(source)

DANN

Benign

0.95

PhyloP100

0.58

PromoterAI

0.070

Neutral

(source)

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

3.1

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over