rs140665645

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_052999.4(CMTM1):​c.86G>A​(p.Ser29Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000226 in 1,613,948 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00024 ( 0 hom. )

Consequence

CMTM1
NM_052999.4 missense

Scores

17

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.42
Variant links:
Genes affected
CMTM1 (HGNC:19172): (CKLF like MARVEL transmembrane domain containing 1) This gene belongs to the chemokine-like factor gene superfamily, a novel family that is similar to the chemokine and the transmembrane 4 superfamilies of signaling molecules. The protein encoded by this gene may play an important role in testicular development. Alternatively spliced transcript variants encoding different isoforms have been identified. Naturally occurring read-through transcription occurs between this locus and the neighboring locus CKLF (chemokine-like factor).[provided by RefSeq, Feb 2011]
CKLF-CMTM1 (HGNC:39977): (CKLF-CMTM1 readthrough) This locus represents naturally occurring read-through transcription between the neighboring CKLF (chemokine-like factor) and CMTM1 (CKLF-like MARVEL transmembrane domain containing 1) genes on chromosome 16. The read-through transcript produces a fusion protein that shares sequence identity with each individual gene product. [provided by RefSeq, Feb 2011]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.038105577).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CMTM1NM_052999.4 linkc.86G>A p.Ser29Asn missense_variant Exon 1 of 4 ENST00000379500.7 NP_443725.3 Q8IZ96-17

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CMTM1ENST00000379500.7 linkc.86G>A p.Ser29Asn missense_variant Exon 1 of 4 1 NM_052999.4 ENSP00000368814.2 Q8IZ96-17
CKLF-CMTM1ENST00000616804.5 linkc.237+8251G>A intron_variant Intron 2 of 3 2 ENSP00000479319.1 A0A087WVB3

Frequencies

GnomAD3 genomes
AF:
0.000105
AC:
16
AN:
152120
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:
0.000235
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000163
AC:
41
AN:
250980
Hom.:
0
AF XY:
0.000140
AC XY:
19
AN XY:
135738
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000579
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000335
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000239
AC:
349
AN:
1461828
Hom.:
0
Cov.:
33
AF XY:
0.000257
AC XY:
187
AN XY:
727222
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000447
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000374
Gnomad4 NFE exome
AF:
0.000305
Gnomad4 OTH exome
AF:
0.0000993
GnomAD4 genome
AF:
0.000105
AC:
16
AN:
152120
Hom.:
0
Cov.:
32
AF XY:
0.0000942
AC XY:
7
AN XY:
74300
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:
0.000235
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000307
Hom.:
0
Bravo
AF:
0.000106
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.000165
AC:
20
EpiCase
AF:
0.000109
EpiControl
AF:
0.000356

ClinVar

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

Submissions by phenotype

not specified Uncertain:1
Oct 20, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.86G>A (p.S29N) alteration is located in exon 1 (coding exon 1) of the CMTM1 gene. This alteration results from a G to A substitution at nucleotide position 86, causing the serine (S) at amino acid position 29 to be replaced by an asparagine (N). 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
BayesDel_addAF
Benign
-0.56
T
BayesDel_noAF
Benign
-0.73
CADD
Benign
5.5
DANN
Benign
0.94
DEOGEN2
Benign
0.0085
.;T;.;.
Eigen
Benign
-1.3
Eigen_PC
Benign
-1.5
FATHMM_MKL
Benign
0.013
N
LIST_S2
Benign
0.29
T;T;T;T
M_CAP
Benign
0.0033
T
MetaRNN
Benign
0.038
T;T;T;T
MetaSVM
Benign
-1.1
T
PrimateAI
Benign
0.33
T
PROVEAN
Benign
0.040
N;N;N;N
REVEL
Benign
0.020
Sift
Benign
0.64
T;T;T;T
Sift4G
Benign
0.72
T;T;D;D
Polyphen
0.030
B;B;.;B
Vest4
0.13
MVP
0.061
MPC
0.72
ClinPred
0.040
T
GERP RS
-5.1
gMVP
0.036

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs140665645; hg19: chr16-66600502; API