Genetic Variant COQ4:p.Arg6Pro (chr9-128322875-G-C) – 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_016035.5(COQ4):c.17G>C(p.Arg6Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000759 in 1,581,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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. R6H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000070 ( 0 hom. )

Consequence

COQ4
NM_016035.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.439

Publications

1 publications found

Variant links:

Genes affected

COQ4 (HGNC:19693): (coenzyme Q4) This gene encodes a component of the coenzyme Q biosynthesis pathway. Coenzyme Q, an essential component of the electron transport chain, shuttles electrons between complexes I or II to complex III of the mitochondrial transport chain. This protein appears to play a structural role in stabilizing a complex that contains most of the coenzyme Q biosynthesis enzymes. Mutations in this gene are associated with mitochondrial disorders linked to coenzyme Q deficiency. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]

COQ4 links:

TRUB2 (HGNC:17170): (TruB pseudouridine synthase family member 2) Pseudouridine is an abundant component of rRNAs and tRNAs and is enzymatically generated by isomerization of uridine by pseudouridine synthase (Zucchini et al., 2003 [PubMed 12736709]).[supplied by OMIM, Mar 2008]

TRUB2 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 (MetaRNN=0.056223333).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016035.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COQ4	NM_016035.5	MANE Select	c.17G>C	p.Arg6Pro	missense	Exon 1 of 7	NP_057119.3	Q9Y3A0-1
	COQ4	NM_001305942.2		c.17G>C	p.Arg6Pro	missense	Exon 1 of 4	NP_001292871.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
COQ4	ENST00000300452.8	TSL:1 MANE Select	c.17G>C	p.Arg6Pro	missense	Exon 1 of 7	ENSP00000300452.3	Q9Y3A0-1
COQ4	ENST00000926106.1		c.17G>C	p.Arg6Pro	missense	Exon 1 of 8	ENSP00000596165.1
COQ4	ENST00000926105.1		c.17G>C	p.Arg6Pro	missense	Exon 1 of 8	ENSP00000596164.1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000157

AC:

AN:

191518

AF XY:

0.0000282

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:

0.0000122

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000700

AC:

AN:

1429302

Hom.:

Cov.:

AF XY:

0.0000141

AC XY:

AN XY:

709546

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32666

American (AMR)

AF:

0.00

AC:

AN:

40608

Ashkenazi Jewish (ASJ)

AF:

0.0000392

AC:

AN:

25520

East Asian (EAS)

AF:

0.00

AC:

AN:

38272

South Asian (SAS)

AF:

0.0000835

AC:

AN:

83854

European-Finnish (FIN)

AF:

0.00

AC:

AN:

43542

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5704

European-Non Finnish (NFE)

AF:

0.00000182

AC:

AN:

1099950

Other (OTH)

AF:

0.00

AC:

AN:

59186

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152368

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74512

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41590

American (AMR)

AF:

0.00

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.000414

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000169

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.59

CADD

Benign

(source)

DANN

Benign

0.68

DEOGEN2

Benign

0.0081

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.035

LIST_S2

Benign

0.49

M_CAP

Benign

0.0083

MetaRNN

Benign

0.056

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.81

PhyloP100

-0.44

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.1

REVEL

Benign

0.020

Sift

Benign

0.16

Sift4G

Benign

0.15

Polyphen

0.0

Vest4

0.18

MutPred

0.35

Loss of MoRF binding (P = 0)

MVP

0.095

MPC

0.63

ClinPred

0.031

GERP RS

-1.8

PromoterAI

-0.017

Neutral

(source)

Varity_R

0.17

gMVP

0.62

Mutation Taster

=96/4

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over