Variant chr16-80981835-G-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_020188.5(CMC2):c.124C>T(p.Arg42Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000323 in 1,609,620 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: 0.000034 ( 0 hom. )

Consequence

CMC2
NM_020188.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.63

Variant links:

Genes affected

CMC2 (HGNC:24447): (C-X9-C motif containing 2) Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

CMC2 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, 0.766

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CMC2	NM_020188.5 linkuse as main transcript	c.124C>T	p.Arg42Trp	missense_variant	3/4	ENST00000219400.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CMC2	ENST00000219400.8 linkuse as main transcript	c.124C>T	p.Arg42Trp	missense_variant	3/4	1	NM_020188.5	P1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152056

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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:

0.0000362

AC:

AN:

248768

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

134406

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000164

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000531

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000336

AC:

AN:

1457564

Hom.:

Cov.:

AF XY:

0.0000276

AC XY:

AN XY:

725192

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000760

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000397

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152056

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74274

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.0000113

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000412

AC:

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 submitter

clinical testing

Ambry Genetics

Jun 10, 2024

The c.124C>T (p.R42W) alteration is located in exon 3 (coding exon 2) of the CMC2 gene. This alteration results from a C to T substitution at nucleotide position 124, causing the arginine (R) at amino acid position 42 to be replaced by a tryptophan (W). 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

0.28

BayesDel_addAF

Benign

-0.019

BayesDel_noAF

Uncertain

0.0

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.28

T;T;T;T;T;.;.;T

Eigen

Benign

0.12

Eigen_PC

Uncertain

0.24

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.95

.;.;.;.;D;.;D;D

M_CAP

Benign

0.040

MetaRNN

Pathogenic

0.77

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

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

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

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-4.4

D;D;D;D;D;D;D;.

REVEL

Benign

0.25

Sift

Benign

0.097

T;T;T;T;T;T;T;.

Sift4G

Benign

0.088

T;T;T;T;T;T;T;T

Polyphen

0.27

B;.;B;B;B;.;.;.

Vest4

0.74

MutPred

0.65

Loss of disorder (P = 0.0311);.;Loss of disorder (P = 0.0311);Loss of disorder (P = 0.0311);Loss of disorder (P = 0.0311);Loss of disorder (P = 0.0311);Loss of disorder (P = 0.0311);.;

MVP

0.37

MPC

0.0072

ClinPred

0.20

GERP RS

5.9

Varity_R

0.40

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.32

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.32

Position offset: -29

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