rs387907131

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_001044385.3(TMEM237):​c.76C>T​(p.Gln26*) variant causes a stop gained, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000714 in 1,401,220 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

TMEM237
NM_001044385.3 stop_gained, splice_region

Scores

3
3
1
Splicing: ADA: 0.03180
1

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 1.31

Publications

2 publications found
Variant links:
Genes affected
TMEM237 (HGNC:14432): (transmembrane protein 237) The protein encoded by this gene is a tetraspanin protein that is thought to be involved in WNT signaling. Defects in this gene are a cause of Joubert syndrome-14. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]
TMEM237 Gene-Disease associations (from GenCC):
  • Joubert syndrome 14
    Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Ambry Genetics
  • Joubert syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Joubert syndrome with oculorenal defect
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Joubert syndrome with renal defect
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Meckel syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 12 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 26 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 2-201640264-G-A is Pathogenic according to our data. Variant chr2-201640264-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 31183.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TMEM237NM_001044385.3 linkc.76C>T p.Gln26* stop_gained, splice_region_variant Exon 3 of 13 ENST00000409883.7 NP_001037850.1
TMEM237NM_152388.4 linkc.52C>T p.Gln18* stop_gained, splice_region_variant Exon 3 of 13 NP_689601.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TMEM237ENST00000409883.7 linkc.76C>T p.Gln26* stop_gained, splice_region_variant Exon 3 of 13 5 NM_001044385.3 ENSP00000386264.2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
7.14e-7
AC:
1
AN:
1401220
Hom.:
0
Cov.:
28
AF XY:
0.00
AC XY:
0
AN XY:
696108
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
31278
American (AMR)
AF:
0.00
AC:
0
AN:
36726
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25062
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36974
South Asian (SAS)
AF:
0.00
AC:
0
AN:
76344
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
38160
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5628
European-Non Finnish (NFE)
AF:
9.15e-7
AC:
1
AN:
1092674
Other (OTH)
AF:
0.00
AC:
0
AN:
58374
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.325
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.00
Hom.:
0

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Joubert syndrome 14 Pathogenic:2
Feb 23, 2015
UW Hindbrain Malformation Research Program, University of Washington
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:research

- -

Dec 09, 2011
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.56
D
BayesDel_noAF
Pathogenic
0.57
CADD
Pathogenic
63
DANN
Uncertain
1.0
Eigen
Pathogenic
0.74
Eigen_PC
Uncertain
0.55
FATHMM_MKL
Uncertain
0.80
D
PhyloP100
1.3
Vest4
0.22
GERP RS
4.0
Mutation Taster
=7/193
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.032
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

Other links and lift over

dbSNP: rs387907131; hg19: chr2-202504987; API