rs376555896

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP5

The NM_001077418.3(TMEM231):​c.241C>T​(p.Leu81Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000672 in 1,591,210 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. L81L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000072 ( 0 hom. )

Consequence

TMEM231
NM_001077418.3 missense

Scores

3
10
5

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:2

Conservation

PhyloP100: 4.04

Publications

2 publications found
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]
TMEM231 Gene-Disease associations (from GenCC):
  • ciliopathy
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • Joubert syndrome 20
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
  • Meckel syndrome, type 11
    Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
  • Joubert syndrome with oculorenal defect
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Meckel syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • orofaciodigital syndrome III
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 16-75555872-G-A is Pathogenic according to our data. Variant chr16-75555872-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 445818.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001077418.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM231
NM_001077418.3
MANE Select
c.241C>Tp.Leu81Phe
missense
Exon 2 of 7NP_001070886.1Q9H6L2-1
TMEM231
NM_001077416.2
c.400C>Tp.Leu134Phe
missense
Exon 1 of 6NP_001070884.2Q9H6L2
TMEM231
NR_074083.2
n.284C>T
non_coding_transcript_exon
Exon 2 of 7

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM231
ENST00000258173.11
TSL:1 MANE Select
c.241C>Tp.Leu81Phe
missense
Exon 2 of 7ENSP00000258173.5Q9H6L2-1
TMEM231
ENST00000568377.5
TSL:1
c.328C>Tp.Leu110Phe
missense
Exon 1 of 6ENSP00000476267.1Q9H6L2-2
TMEM231
ENST00000565067.5
TSL:5
c.241C>Tp.Leu81Phe
missense
Exon 2 of 6ENSP00000457254.1H3BTN6

Frequencies

GnomAD3 genomes
AF:
0.0000263
AC:
4
AN:
152240
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000724
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000188
AC:
4
AN:
212802
AF XY:
0.00000862
show subpopulations
Gnomad AFR exome
AF:
0.0000838
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000317
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000716
AC:
103
AN:
1438970
Hom.:
0
Cov.:
30
AF XY:
0.0000729
AC XY:
52
AN XY:
713190
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32888
American (AMR)
AF:
0.00
AC:
0
AN:
41802
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25498
East Asian (EAS)
AF:
0.0000258
AC:
1
AN:
38752
South Asian (SAS)
AF:
0.00
AC:
0
AN:
82582
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51102
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5688
European-Non Finnish (NFE)
AF:
0.0000917
AC:
101
AN:
1101268
Other (OTH)
AF:
0.0000168
AC:
1
AN:
59390
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.459
Heterozygous variant carriers
0
6
12
17
23
29
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000263
AC:
4
AN:
152240
Hom.:
0
Cov.:
33
AF XY:
0.0000134
AC XY:
1
AN XY:
74380
show subpopulations
African (AFR)
AF:
0.0000724
AC:
3
AN:
41454
American (AMR)
AF:
0.00
AC:
0
AN:
15294
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5192
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10628
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68048
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.488
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000676
Hom.:
0
Bravo
AF:
0.0000151
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000120
AC:
1
ExAC
AF:
0.0000166
AC:
2

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
1
-
-
Ciliopathy (1)
1
-
-
Joubert syndrome 20 (1)
1
-
-
Joubert syndrome 20;C3809352:Meckel syndrome, type 11 (1)
-
1
-
not provided (1)
-
1
-
TMEM231-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.22
BayesDel_addAF
Pathogenic
0.17
D
BayesDel_noAF
Uncertain
0.0
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Benign
0.38
T
Eigen
Pathogenic
0.80
Eigen_PC
Pathogenic
0.79
FATHMM_MKL
Benign
0.62
D
LIST_S2
Benign
0.85
T
M_CAP
Benign
0.041
D
MetaRNN
Uncertain
0.67
D
MetaSVM
Uncertain
-0.081
T
MutationAssessor
Uncertain
2.3
M
PhyloP100
4.0
PrimateAI
Uncertain
0.58
T
PROVEAN
Uncertain
-2.4
N
REVEL
Uncertain
0.53
Sift
Uncertain
0.0060
D
Sift4G
Uncertain
0.014
D
Polyphen
0.99
D
Vest4
0.66
MVP
0.53
MPC
1.9
ClinPred
0.85
D
GERP RS
5.9
PromoterAI
0.047
Neutral
Varity_R
0.41
gMVP
0.42
Mutation Taster
=18/82
disease causing

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

Other links and lift over

dbSNP: rs376555896; hg19: chr16-75589770; API