1-226982927-C-T

Position:

chr1-226982927-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_020247.5(COQ8A):c.973C>T(p.Arg325Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,612,186 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

COQ8A
NM_020247.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.04

Variant links:

Genes affected

COQ8A (HGNC:16812): (coenzyme Q8A) This gene encodes a mitochondrial protein similar to yeast ABC1, which functions in an electron-transferring membrane protein complex in the respiratory chain. It is not related to the family of ABC transporter proteins. Expression of this gene is induced by the tumor suppressor p53 and in response to DNA damage, and inhibiting its expression partially suppresses p53-induced apoptosis. Alternatively spliced transcript variants have been found; however, their full-length nature has not been determined. [provided by RefSeq, Jul 2008]

COQ8A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.788

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COQ8A	NM_020247.5 linkuse as main transcript	c.973C>T	p.Arg325Trp	missense_variant	8/15	ENST00000366777.4	NP_064632.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COQ8A	ENST00000366777.4 linkuse as main transcript	c.973C>T	p.Arg325Trp	missense_variant	8/15	1	NM_020247.5	ENSP00000355739	P1	Q8NI60-1
COQ8A	ENST00000366778.5 linkuse as main transcript	c.817C>T	p.Arg273Trp	missense_variant	8/15	1		ENSP00000355740		Q8NI60-3
COQ8A	ENST00000485462.5 linkuse as main transcript	n.363C>T		non_coding_transcript_exon_variant	4/11	1
COQ8A	ENST00000478406.5 linkuse as main transcript	n.952C>T		non_coding_transcript_exon_variant	4/8	2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000723

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

GnomAD3 exomes

AF:

0.0000284

AC:

AN:

246864

Hom.:

AF XY:

0.0000373

AC XY:

AN XY:

134208

show subpopulations

Gnomad AFR exome

AF:

0.0000634

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000549

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000451

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000247

AC:

AN:

1459832

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

726126

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000505

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000234

Gnomad4 OTH exome

AF:

0.0000829

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152354

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.0000721

Gnomad4 AMR

AF:

0.00

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

ExAC

AF:

0.0000413

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Athena Diagnostics

Jan 10, 2017

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 17, 2022

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 325 of the COQ8A protein (p.Arg325Trp). This variant is present in population databases (rs565573577, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with COQ8A-related conditions. ClinVar contains an entry for this variant (Variation ID: 446805). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.12

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.57

D;.;D

Eigen

Uncertain

0.31

Eigen_PC

Benign

0.16

FATHMM_MKL

Uncertain

0.77

LIST_S2

Uncertain

0.97

.;D;D

M_CAP

Benign

0.085

MetaRNN

Pathogenic

0.79

D;D;D

MetaSVM

Uncertain

0.17

MutationTaster

Benign

1.0

D;D;D;D;D;D;D

PrimateAI

Uncertain

0.59

PROVEAN

Pathogenic

-6.5

D;D;D

REVEL

Uncertain

0.56

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;.;D

Vest4

0.91

MutPred

0.53

Loss of ubiquitination at K327 (P = 0.073);.;Loss of ubiquitination at K327 (P = 0.073);

MVP

0.85

MPC

0.31

ClinPred

0.98

GERP RS

-0.70

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.91

gMVP

0.74

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