dbSNP rs1553276975: COQ8A:p.Ala134Asp (chr1-226965223-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_020247.5(COQ8A):c.401C>A(p.Ala134Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,516 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict 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. A134G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

COQ8A
NM_020247.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.01

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

autosomal recessive ataxia due to ubiquinone deficiency
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
coenzyme Q10 deficiency
Inheritance: AR Classification: DEFINITIVE Submitted by: Illumina

COQ8A links:

ENSG00000288674 (HGNC:):

ENSG00000288674 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.114390105).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COQ8A	NM_020247.5 link	c.401C>A	p.Ala134Asp	missense_variant	Exon 3 of 15	ENST00000366777.4	NP_064632.2	Q8NI60-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
COQ8A	ENST00000366777.4 link	c.401C>A	p.Ala134Asp	missense_variant	Exon 3 of 15	1	NM_020247.5	ENSP00000355739.3	Q8NI60-1
ENSG00000288674	ENST00000366779.6 link	n.*5128C>A		non_coding_transcript_exon_variant	Exon 20 of 32	2		ENSP00000355741.2
ENSG00000288674	ENST00000366779.6 link	n.*5128C>A		3_prime_UTR_variant	Exon 20 of 32	2		ENSP00000355741.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461516

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727048

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53092

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111992

Other (OTH)

AF:

0.00

AC:

AN:

60388

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

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.052

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Benign

0.87

DEOGEN2

Benign

0.063

T;.;T

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.48

FATHMM_MKL

Benign

0.40

LIST_S2

Benign

0.57

.;T;T

M_CAP

Benign

0.051

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Benign

-0.87

PhyloP100

1.0

PrimateAI

Benign

0.35

PROVEAN

Benign

0.10

N;N;N

REVEL

Benign

0.12

Sift

Benign

0.51

T;T;T

Sift4G

Benign

0.50

T;T;T

Polyphen

0.28

B;.;B

Vest4

0.29

MutPred

0.16

Loss of MoRF binding (P = 0.059);.;Loss of MoRF binding (P = 0.059);

MVP

0.70

MPC

0.059

ClinPred

0.14

GERP RS

3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.3

Varity_R

0.16

gMVP

0.40

Mutation Taster

=88/12

polymorphism

(source)

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over