Genetic Variant TOR1AIP1:p.Trp15Ser (chr1-179882546-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_015602.4(TOR1AIP1):c.44G>C(p.Trp15Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000194 in 1,493,602 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W15R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

TOR1AIP1
NM_015602.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.68

Variant links:

Genes affected

TOR1AIP1 (HGNC:29456): (torsin 1A interacting protein 1) This gene encodes a type 2 integral membrane protein that binds A- and B-type lamins. The encoded protein localizes to the inner nuclear membrane and may be involved in maintaining the attachment of the nuclear membrane to the nuclear lamina during cell division. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Apr 2016]

TOR1AIP1 links:

ENSG00000272906 (HGNC:):

ENSG00000272906 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOR1AIP1	NM_015602.4 link	c.44G>C	p.Trp15Ser	missense_variant	Exon 1 of 10	ENST00000606911.7	NP_056417.2	Q5JTV8-1
TOR1AIP1	NM_001267578.2 link	c.44G>C	p.Trp15Ser	missense_variant	Exon 1 of 10		NP_001254507.1	Q5JTV8-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TOR1AIP1	ENST00000606911.7 link	c.44G>C	p.Trp15Ser	missense_variant	Exon 1 of 10	1	NM_015602.4	ENSP00000476687.1		Q5JTV8-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152136

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000309

AC:

AN:

129546

Hom.:

AF XY:

0.0000437

AC XY:

AN XY:

68698

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000663

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000209

AC:

AN:

1341466

Hom.:

Cov.:

AF XY:

0.0000213

AC XY:

AN XY:

656048

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000265

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152136

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74304

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:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000868

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Nov 03, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.44G>C (p.W15S) alteration is located in exon 1 (coding exon 1) of the TOR1AIP1 gene. This alteration results from a G to C substitution at nucleotide position 44, causing the tryptophan (W) at amino acid position 15 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Uncertain

0.031

BayesDel_noAF

Uncertain

-0.010

CADD

Uncertain

DANN

Benign

0.79

DEOGEN2

Uncertain

0.45

.;.;T

Eigen

Benign

-0.13

Eigen_PC

Benign

-0.19

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.77

T;T;T

M_CAP

Benign

0.040

MetaRNN

Uncertain

0.64

D;D;D

MetaSVM

Benign

-0.78

MutationAssessor

Benign

1.8

L;.;L

PrimateAI

Uncertain

0.64

PROVEAN

Pathogenic

-4.6

D;D;.

REVEL

Benign

0.23

Sift

Uncertain

0.0010

D;D;.

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

0.86

.;.;P

Vest4

0.60

MutPred

0.50

Gain of glycosylation at W15 (P = 7e-04);Gain of glycosylation at W15 (P = 7e-04);Gain of glycosylation at W15 (P = 7e-04);

MVP

0.50

MPC

0.23

ClinPred

0.70

GERP RS

4.4

Varity_R

0.36

gMVP

0.25

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

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