rs606231455

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PP3_ModeratePP5

The NM_001114748.2(TMEM240):c.511C>T(p.Arg171Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000904 in 1,549,298 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000079 ( 0 hom. )

Consequence

TMEM240
NM_001114748.2 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.59

Variant links:

Genes affected

TMEM240 (HGNC:25186): (transmembrane protein 240) This gene encodes a transmembrane-domain containing protein found in the brain and cerebellum. Mutations in this gene result in spinocerebellar ataxia 21. [provided by RefSeq, Dec 2014]

TMEM240 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.881

PP5

Variant 1-1535370-G-A is Pathogenic according to our data. Variant chr1-1535370-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 161196.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMEM240	NM_001114748.2 linkuse as main transcript	c.511C>T	p.Arg171Trp	missense_variant	4/4	ENST00000378733.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMEM240	ENST00000378733.9 linkuse as main transcript	c.511C>T	p.Arg171Trp	missense_variant	4/4	2	NM_001114748.2	P1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152022

Hom.:

Cov.:

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:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD4 exome

AF:

0.00000787

AC:

AN:

1397276

Hom.:

Cov.:

AF XY:

0.00000435

AC XY:

AN XY:

689220

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000398

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000742

Gnomad4 OTH exome

AF:

0.0000173

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152022

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74252

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.0000113

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Neurodevelopmental disorder

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Laboratory of Molecular Genetics (Pr. Bezieau's lab), CHU de Nantes

Apr 06, 2020

- -

Spinocerebellar ataxia type 21

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Oct 01, 2014

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Dec 14, 2022

This variant is not present in population databases (gnomAD no frequency). 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 161196). This missense change has been observed in individual(s) with autosomal dominant spinocerebellar ataxia (PMID: 25070513). This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 171 of the TMEM240 protein (p.Arg171Trp). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.63

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

-0.020

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.66

D;D

Eigen

Benign

0.14

Eigen_PC

Benign

0.093

FATHMM_MKL

Benign

0.74

M_CAP

Pathogenic

0.98

MetaRNN

Pathogenic

0.88

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.81

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.90

PROVEAN

Uncertain

-3.5

D;D

REVEL

Pathogenic

0.69

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.90

MutPred

0.28

Loss of solvent accessibility (P = 0.0036);Loss of solvent accessibility (P = 0.0036);

MVP

0.46

ClinPred

0.92

GERP RS

1.9

Varity_R

0.38

gMVP

0.53

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over