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GeneBe

3-28316351-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_182523.2(CMC1):c.128A>G(p.Lys43Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000763 in 1,572,394 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000070 ( 0 hom. )

Consequence

CMC1
NM_182523.2 missense

Scores

1
5
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.48
Variant links:
Genes affected
CMC1 (HGNC:28783): (C-X9-C motif containing 1) Predicted to enable metal ion binding activity. Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]
AZI2 (HGNC:24002): (5-azacytidine induced 2) AZI2, or NAP1, contributes to the activation of NFKB (see MIM 164011)-dependent gene expression by activating IKK-related kinases, such as NAK (TBK1; MIM 604834) (Fujita et al., 2003 [PubMed 14560022]).[supplied by OMIM, Mar 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.39787972).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CMC1NM_182523.2 linkuse as main transcriptc.128A>G p.Lys43Arg missense_variant 3/4 ENST00000466830.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CMC1ENST00000466830.6 linkuse as main transcriptc.128A>G p.Lys43Arg missense_variant 3/41 NM_182523.2 P1

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152108
Hom.:
0
Cov.:
32
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000704
AC:
10
AN:
1420286
Hom.:
0
Cov.:
27
AF XY:
0.00000849
AC XY:
6
AN XY:
706556
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000126
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000640
Gnomad4 OTH exome
AF:
0.0000171
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152108
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74306
show subpopulations
Gnomad4 AFR
AF:
0.00
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:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000905
Hom.:
0
Bravo
AF:
0.00000378

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsAug 14, 2023The c.128A>G (p.K43R) alteration is located in exon 3 (coding exon 3) of the CMC1 gene. This alteration results from a A to G substitution at nucleotide position 128, causing the lysine (K) at amino acid position 43 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.094
BayesDel_addAF
Benign
-0.054
T
BayesDel_noAF
Benign
-0.31
Cadd
Uncertain
25
Dann
Uncertain
1.0
DEOGEN2
Benign
0.31
T;T
Eigen
Uncertain
0.45
Eigen_PC
Uncertain
0.52
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.92
D;D
M_CAP
Benign
0.021
T
MetaRNN
Benign
0.40
T;T
MetaSVM
Benign
-0.71
T
MutationAssessor
Benign
1.9
L;.
MutationTaster
Benign
1.0
D;D
PrimateAI
Benign
0.35
T
PROVEAN
Uncertain
-2.5
N;N
REVEL
Benign
0.20
Sift
Benign
0.12
T;T
Sift4G
Benign
0.17
T;T
Polyphen
0.48
P;.
Vest4
0.40
MutPred
0.58
Loss of methylation at K43 (P = 0.0017);.;
MVP
0.27
MPC
0.057
ClinPred
0.95
D
GERP RS
5.6
Varity_R
0.24
gMVP
0.15

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.13
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.

Other links and lift over

dbSNP: rs1321707408; hg19: chr3-28357842; API