rs147966742

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_016464.5(TMEM138):c.461G>A(p.Arg154His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000109 in 1,613,926 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R154C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00058 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000060 ( 1 hom. )

Consequence

TMEM138
NM_016464.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 7.36

Publications

0 publications found

Variant links:

Genes affected

TMEM138 (HGNC:26944): (transmembrane protein 138) This gene encodes a multi-pass transmembrane protein. Reduced expression of this gene in mouse fibroblasts causes short cilia and failure of ciliogenesis. Expression of this gene is tightly coordinated with expression of the neighboring gene TMEM216. Mutations in this gene are associated with the autosomal recessive neurodevelopmental disorder Joubert Syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2012]

TMEM138 Gene-Disease associations (from GenCC):

Joubert syndrome 16
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
ciliopathy
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
Joubert syndrome with oculorenal defect
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TMEM138 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.031042129).

BP6

Variant 11-61368681-G-A is Benign according to our data. Variant chr11-61368681-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 570566.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000578 (88/152308) while in subpopulation AFR AF = 0.00202 (84/41566). AF 95% confidence interval is 0.00167. There are 0 homozygotes in GnomAd4. There are 51 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016464.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TMEM138	NM_016464.5	MANE Select	c.461G>A	p.Arg154His	missense	Exon 5 of 5	NP_057548.1
TMEM138	NM_001441180.1		c.458G>A	p.Arg153His	missense	Exon 5 of 5	NP_001428109.1
TMEM138	NM_001330281.2		c.287G>A	p.Arg96His	missense	Exon 5 of 5	NP_001317210.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TMEM138	ENST00000278826.11	TSL:1 MANE Select	c.461G>A	p.Arg154His	missense	Exon 5 of 5	ENSP00000278826.5
TMEM138	ENST00000543594.6	TSL:1	n.*672G>A		non_coding_transcript_exon	Exon 5 of 5	ENSP00000509354.1
TMEM138	ENST00000542946.2	TSL:1	c.*2447G>A		3_prime_UTR	Exon 3 of 3	ENSP00000445792.1

Frequencies

GnomAD3 genomes

AF:

0.000572

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00200

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000147

AC:

AN:

251228

AF XY:

0.000125

show subpopulations

Gnomad AFR exome

AF:

0.00160

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000602

AC:

AN:

1461618

Hom.:

Cov.:

AF XY:

0.0000481

AC XY:

AN XY:

727134

show subpopulations

African (AFR)

AF:

0.00137

AC:

AN:

33476

American (AMR)

AF:

0.000313

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000812

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53324

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5726

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111900

Other (OTH)

AF:

0.000282

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000578

AC:

AN:

152308

Hom.:

Cov.:

AF XY:

0.000685

AC XY:

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.00202

AC:

AN:

41566

American (AMR)

AF:

0.000196

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.509

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:

0.000243

Hom.:

Bravo

AF:

0.000563

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000206

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Joubert syndrome 16

Uncertain:1Benign:1

Feb 21, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Nov 27, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 154 of the TMEM138 protein (p.Arg154His). This variant is present in population databases (rs147966742, gnomAD 0.2%). This variant has not been reported in the literature in individuals affected with TMEM138-related conditions. ClinVar contains an entry for this variant (Variation ID: 570566). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

not provided

Uncertain:1

Aug 20, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 22282472)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.092

BayesDel_noAF

Uncertain

0.090

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.78

Eigen

Uncertain

0.67

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.90

M_CAP

Benign

0.071

MetaRNN

Benign

0.031

MetaSVM

Uncertain

0.51

MutationAssessor

Uncertain

2.6

PhyloP100

7.4

PrimateAI

Benign

0.38

PROVEAN

Uncertain

-2.7

REVEL

Uncertain

0.63

Sift

Uncertain

0.010

Sift4G

Uncertain

0.0090

Polyphen

0.90

Vest4

0.36

MVP

0.74

MPC

0.76

ClinPred

0.078

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.28

gMVP

0.69

Mutation Taster

=38/62

disease causing

(source)

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

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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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over