chr16-75542641-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP5BP4

The NM_001077418.3(TMEM231):c.625G>A(p.Asp209Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000428 in 1,613,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

TMEM231
NM_001077418.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:7U:1

Conservation

PhyloP100: 3.81

Publications

7 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

TMEM231 links:

ENSG00000260092 (HGNC:):

ENSG00000260092 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-75542641-C-T is Pathogenic according to our data. Variant chr16-75542641-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 39822.

BP4

Computational evidence support a benign effect (MetaRNN=0.34586817). . Strength limited to SUPPORTING due to the PP5.

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

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TMEM231	NM_001077418.3	MANE Select	c.625G>A	p.Asp209Asn	missense	Exon 5 of 7	NP_001070886.1	Q9H6L2-1
TMEM231	NM_001077416.2		c.784G>A	p.Asp262Asn	missense	Exon 4 of 6	NP_001070884.2	Q9H6L2
TMEM231	NR_074083.2		n.791G>A		non_coding_transcript_exon	Exon 5 of 7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TMEM231	ENST00000258173.11	TSL:1 MANE Select	c.625G>A	p.Asp209Asn	missense	Exon 5 of 7	ENSP00000258173.5	Q9H6L2-1
TMEM231	ENST00000568377.5	TSL:1	c.712G>A	p.Asp238Asn	missense	Exon 4 of 6	ENSP00000476267.1	Q9H6L2-2
TMEM231	ENST00000565067.5	TSL:5	c.481G>A	p.Asp161Asn	missense	Exon 4 of 6	ENSP00000457254.1	H3BTN6

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

152074

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000682

AC:

AN:

249258

AF XY:

0.0000592

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000556

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000115

Gnomad OTH exome

AF:

0.000496

GnomAD4 exome

AF:

0.0000431

AC:

AN:

1461640

Hom.:

Cov.:

AF XY:

0.0000468

AC XY:

AN XY:

727102

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000540

AC:

AN:

1111838

Other (OTH)

AF:

0.0000331

AC:

AN:

60368

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000395

AC:

AN:

152074

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74290

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41414

American (AMR)

AF:

0.00

AC:

AN:

15240

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.0000474

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000120

AC:

ExAC

AF:

0.0000827

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000356

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Joubert syndrome 20;C3809352:Meckel syndrome, type 11 (2)

not provided (2)

Inborn genetic diseases (1)

Joubert syndrome 20 (1)

Joubert syndrome and related disorders (1)

TMEM231-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.51

CADD

Benign

(source)

DANN

Uncertain

0.97

DEOGEN2

Benign

0.13

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.51

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.81

M_CAP

Benign

0.039

MetaRNN

Benign

0.35

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.7

PhyloP100

3.8

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.6

REVEL

Benign

0.17

Sift

Benign

0.20

Sift4G

Uncertain

0.039

Polyphen

0.079

Vest4

0.34

MVP

0.28

MPC

0.012

ClinPred

0.32

GERP RS

2.3

Varity_R

0.056

gMVP

0.46

Mutation Taster

=24/76

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over