rs397514609

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PVS1

The ENST00000568377.5(TMEM231):​c.2T>C​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000122 in 1,473,338 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

TMEM231
ENST00000568377.5 start_lost

Scores

1
1
9

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.885

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: Likely_pathogenic. The variant received 8 ACMG points.

PVS1
Start lost variant, next in-frame start position is after 22 pathogenic variants. Next in-frame start position is after 146 codons. Genomic position: 75545915. Lost 0.420 part of the original CDS.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000568377.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM231
NM_001077418.3
MANE Select
c.12T>Cp.Tyr4Tyr
synonymous
Exon 1 of 7NP_001070886.1Q9H6L2-1
TMEM231
NM_001077416.2
c.74T>Cp.Met25Thr
missense
Exon 1 of 6NP_001070884.2Q9H6L2
TMEM231
NR_074083.2
n.55T>C
non_coding_transcript_exon
Exon 1 of 7

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM231
ENST00000568377.5
TSL:1
c.2T>Cp.Met1?
start_lost
Exon 1 of 6ENSP00000476267.1Q9H6L2-2
TMEM231
ENST00000258173.11
TSL:1 MANE Select
c.12T>Cp.Tyr4Tyr
synonymous
Exon 1 of 7ENSP00000258173.5Q9H6L2-1
TMEM231
ENST00000565067.5
TSL:5
c.12T>Cp.Tyr4Tyr
synonymous
Exon 1 of 6ENSP00000457254.1H3BTN6

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152252
Hom.:
0
Cov.:
33
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:
0.000621
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000100
AC:
1
AN:
99892
AF XY:
0.0000180
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000114
AC:
15
AN:
1321086
Hom.:
0
Cov.:
30
AF XY:
0.0000186
AC XY:
12
AN XY:
645198
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
27954
American (AMR)
AF:
0.00
AC:
0
AN:
25336
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19632
East Asian (EAS)
AF:
0.00
AC:
0
AN:
33958
South Asian (SAS)
AF:
0.000179
AC:
12
AN:
66988
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
35874
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5298
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1051130
Other (OTH)
AF:
0.0000546
AC:
3
AN:
54916
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152252
Hom.:
0
Cov.:
33
AF XY:
0.0000403
AC XY:
3
AN XY:
74382
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41476
American (AMR)
AF:
0.00
AC:
0
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5198
South Asian (SAS)
AF:
0.000621
AC:
3
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10622
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68042
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.508
Heterozygous variant carriers
0
0
1
1
2
2
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:
0.00
Hom.:
0
ExAC
AF:
0.00000872
AC:
1

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
Joubert syndrome 20;C3809352:Meckel syndrome, type 11 (2)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
-0.10
T
BayesDel_noAF
Benign
-0.39
CADD
Benign
8.8
DANN
Benign
0.97
Eigen
Benign
-0.39
Eigen_PC
Benign
-0.26
FATHMM_MKL
Benign
0.040
N
LIST_S2
Uncertain
0.90
D
M_CAP
Benign
0.046
D
MetaRNN
Benign
0.11
T
MetaSVM
Benign
-0.62
T
PhyloP100
0.89
Sift4G
Pathogenic
0.0
D
Vest4
0.28
MVP
0.061
ClinPred
0.19
T
GERP RS
2.5
PromoterAI
-0.041
Neutral
Mutation Taster
=15/185
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: rs397514609; hg19: chr16-75590096; API