rs138560167

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_016035.5(COQ4):​c.445G>A​(p.Asp149Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,406 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. D149H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

COQ4
NM_016035.5 missense

Scores

6
13

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.16

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 Gene-Disease associations (from GenCC):
  • mitochondrial disease
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • neonatal encephalomyopathy-cardiomyopathy-respiratory distress syndrome
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM1
In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 3 uncertain in NM_016035.5
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.25287497).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
COQ4NM_016035.5 linkc.445G>A p.Asp149Asn missense_variant Exon 5 of 7 ENST00000300452.8 NP_057119.3 Q9Y3A0-1
COQ4XM_047423449.1 linkc.*45G>A 3_prime_UTR_variant Exon 4 of 4 XP_047279405.1
COQ4NM_001305942.2 linkc.*3-1279G>A intron_variant Intron 3 of 3 NP_001292871.2 A0A024R890
COQ4XM_017014792.2 linkc.*3-655G>A intron_variant Intron 3 of 3 XP_016870281.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
COQ4ENST00000300452.8 linkc.445G>A p.Asp149Asn missense_variant Exon 5 of 7 1 NM_016035.5 ENSP00000300452.3 Q9Y3A0-1
COQ4ENST00000461102.1 linkn.1784G>A non_coding_transcript_exon_variant Exon 1 of 2 2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000848
AC:
2
AN:
235792
AF XY:
0.0000157
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000566
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.88e-7
AC:
1
AN:
1453406
Hom.:
0
Cov.:
31
AF XY:
0.00000138
AC XY:
1
AN XY:
722156
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33358
American (AMR)
AF:
0.00
AC:
0
AN:
43430
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25904
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39340
South Asian (SAS)
AF:
0.0000118
AC:
1
AN:
84488
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52778
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5750
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1108282
Other (OTH)
AF:
0.00
AC:
0
AN:
60076
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
32
ExAC
AF:
0.0000165
AC:
2
Asia WGS
AF:
0.00115
AC:
4
AN:
3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.34
T
BayesDel_noAF
Benign
-0.56
CADD
Benign
20
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.58
D
Eigen
Benign
-0.12
Eigen_PC
Benign
-0.0016
FATHMM_MKL
Uncertain
0.85
D
LIST_S2
Uncertain
0.90
D
M_CAP
Benign
0.017
T
MetaRNN
Benign
0.25
T
MetaSVM
Benign
-0.97
T
MutationAssessor
Benign
1.9
L
PhyloP100
3.2
PrimateAI
Uncertain
0.53
T
PROVEAN
Uncertain
-3.8
D
REVEL
Benign
0.13
Sift
Benign
0.055
T
Sift4G
Benign
0.090
T
Polyphen
0.12
B
Vest4
0.26
MutPred
0.71
Loss of disorder (P = 0.1725);
MVP
0.56
MPC
0.50
ClinPred
0.67
D
GERP RS
4.0
Varity_R
0.33
gMVP
0.54
Mutation Taster
=79/21
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.10
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs138560167; hg19: chr9-131094474; API