16-75540132-C-T

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_001077418.3(TMEM231):​c.813G>A​(p.Val271=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0972 in 1,613,238 control chromosomes in the GnomAD database, including 23,591 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.099 ( 2475 hom., cov: 33)
Exomes 𝑓: 0.097 ( 21116 hom. )

Consequence

TMEM231
NM_001077418.3 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.923
Variant links:
Genes affected
TMEM231 (HGNC:37234): (transmembrane protein 231) This gene encodes a transmembrane protein, which is a component of the B9 complex involved in the formation of the diffusion barrier between the cilia and plasma membrane. Mutations in this gene cause Joubert syndrome (JBTS). Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2013]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.36).
BP6
Variant 16-75540132-C-T is Benign according to our data. Variant chr16-75540132-C-T is described in ClinVar as [Benign]. Clinvar id is 130591.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=0.923 with no splicing effect.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.7 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TMEM231NM_001077418.3 linkuse as main transcriptc.813G>A p.Val271= synonymous_variant 7/7 ENST00000258173.11
TMEM231NM_001077416.2 linkuse as main transcriptc.972G>A p.Val324= synonymous_variant 6/6
TMEM231NR_074083.2 linkuse as main transcriptn.979G>A non_coding_transcript_exon_variant 7/7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TMEM231ENST00000258173.11 linkuse as main transcriptc.813G>A p.Val271= synonymous_variant 7/71 NM_001077418.3 P1Q9H6L2-1

Frequencies

GnomAD3 genomes
AF:
0.0995
AC:
15129
AN:
152106
Hom.:
2468
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0193
Gnomad AMI
AF:
0.108
Gnomad AMR
AF:
0.283
Gnomad ASJ
AF:
0.101
Gnomad EAS
AF:
0.719
Gnomad SAS
AF:
0.308
Gnomad FIN
AF:
0.0674
Gnomad MID
AF:
0.0601
Gnomad NFE
AF:
0.0500
Gnomad OTH
AF:
0.109
GnomAD3 exomes
AF:
0.184
AC:
45706
AN:
247938
Hom.:
10066
AF XY:
0.177
AC XY:
23870
AN XY:
134654
show subpopulations
Gnomad AFR exome
AF:
0.0189
Gnomad AMR exome
AF:
0.422
Gnomad ASJ exome
AF:
0.0868
Gnomad EAS exome
AF:
0.754
Gnomad SAS exome
AF:
0.277
Gnomad FIN exome
AF:
0.0670
Gnomad NFE exome
AF:
0.0524
Gnomad OTH exome
AF:
0.138
GnomAD4 exome
AF:
0.0969
AC:
141614
AN:
1461012
Hom.:
21116
Cov.:
32
AF XY:
0.101
AC XY:
73122
AN XY:
726822
show subpopulations
Gnomad4 AFR exome
AF:
0.0141
Gnomad4 AMR exome
AF:
0.406
Gnomad4 ASJ exome
AF:
0.0862
Gnomad4 EAS exome
AF:
0.742
Gnomad4 SAS exome
AF:
0.272
Gnomad4 FIN exome
AF:
0.0661
Gnomad4 NFE exome
AF:
0.0511
Gnomad4 OTH exome
AF:
0.117
GnomAD4 genome
AF:
0.0995
AC:
15143
AN:
152226
Hom.:
2475
Cov.:
33
AF XY:
0.112
AC XY:
8331
AN XY:
74402
show subpopulations
Gnomad4 AFR
AF:
0.0192
Gnomad4 AMR
AF:
0.284
Gnomad4 ASJ
AF:
0.101
Gnomad4 EAS
AF:
0.720
Gnomad4 SAS
AF:
0.307
Gnomad4 FIN
AF:
0.0674
Gnomad4 NFE
AF:
0.0500
Gnomad4 OTH
AF:
0.110
Alfa
AF:
0.0560
Hom.:
264
Bravo
AF:
0.116
Asia WGS
AF:
0.446
AC:
1546
AN:
3478
EpiCase
AF:
0.0541
EpiControl
AF:
0.0552

ClinVar

Significance: Benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:4
Benign, criteria provided, single submitterclinical testingGeneDxFeb 02, 2016This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Likely benign, no assertion criteria providedclinical testingGenetic Services Laboratory, University of Chicago-Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -
Benign, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)May 28, 2015- -
Joubert syndrome 20;C3809352:Meckel syndrome, type 11 Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeJan 31, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.36
CADD
Benign
2.4
DANN
Benign
0.82

Splicing

Name
Calibrated prediction
Score
Prediction
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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs2242406; hg19: chr16-75574030; COSMIC: COSV50739084; COSMIC: COSV50739084; API