chr1-179882965-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_015602.4(TOR1AIP1):c.463C>T(p.His155Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000254 in 1,611,924 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

TOR1AIP1
NM_015602.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0700

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0064251125).

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000919 (14/152348) while in subpopulation EAS AF= 0.00271 (14/5174). AF 95% confidence interval is 0.00164. There are 0 homozygotes in gnomad4. There are 9 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOR1AIP1	NM_015602.4 link	c.463C>T	p.His155Tyr	missense_variant	Exon 1 of 10	ENST00000606911.7	NP_056417.2	Q5JTV8-1
TOR1AIP1	NM_001267578.2 link	c.463C>T	p.His155Tyr	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.463C>T	p.His155Tyr	missense_variant	Exon 1 of 10	1	NM_015602.4	ENSP00000476687.1		Q5JTV8-1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152230

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:

0.00270

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000108

AC:

AN:

240280

Hom.:

AF XY:

0.000114

AC XY:

AN XY:

131834

show subpopulations

Gnomad AFR exome

AF:

0.0000711

Gnomad AMR exome

AF:

0.0000294

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00124

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000186

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000185

AC:

AN:

1459576

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

726016

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000530

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.0000919

AC:

AN:

152348

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74500

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00271

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.0000825

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Autosomal recessive limb-girdle muscular dystrophy type 2Y

Uncertain:1

Aug 13, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces histidine, which is basic and polar, with tyrosine, which is neutral and polar, at codon 155 of the TOR1AIP1 protein (p.His155Tyr). This variant is present in population databases (rs540366779, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with TOR1AIP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 542849). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt TOR1AIP1 protein function with a negative predictive value of 80%. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Benign

0.82

DEOGEN2

Benign

0.13

.;.;T;.;T

Eigen

Benign

-0.79

Eigen_PC

Benign

-0.93

FATHMM_MKL

Benign

0.025

LIST_S2

Benign

0.72

T;T;T;T;T

M_CAP

Benign

0.0037

MetaRNN

Benign

0.0064

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.3

L;.;L;.;.

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.6

N;N;.;.;N

REVEL

Benign

0.020

Sift

Benign

0.78

T;T;.;.;T

Sift4G

Uncertain

0.039

D;D;D;T;T

Polyphen

0.0010

.;.;B;.;.

Vest4

0.084

MutPred

0.30

Gain of phosphorylation at H155 (P = 0.0045);Gain of phosphorylation at H155 (P = 0.0045);Gain of phosphorylation at H155 (P = 0.0045);.;.;

MVP

0.24

MPC

0.32

ClinPred

0.022

GERP RS

-0.32

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.10

gMVP

0.018

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