chr1-179882539-G-A

Position:

chr1-179882539-G-A

Variant summary

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

The NM_015602.4(TOR1AIP1):c.37G>A(p.Glu13Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000257 in 1,480,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 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. E13V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

TOR1AIP1
NM_015602.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 4.14

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:

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=0.026823103).

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000591 (9/152184) while in subpopulation EAS AF= 0.00135 (7/5188). AF 95% confidence interval is 0.000633. There are 0 homozygotes in gnomad4. There are 5 alleles in male gnomad4 subpopulation. Median coverage is 31. 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/exons	MANE	Protein	UniProt
TOR1AIP1	NM_015602.4 linkuse as main transcript	c.37G>A	p.Glu13Lys	missense_variant	1/10	ENST00000606911.7	NP_056417.2	Q5JTV8-1
TOR1AIP1	NM_001267578.2 linkuse as main transcript	c.37G>A	p.Glu13Lys	missense_variant	1/10		NP_001254507.1	Q5JTV8-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
TOR1AIP1	ENST00000606911.7 linkuse as main transcript	c.37G>A	p.Glu13Lys	missense_variant	1/10	1	NM_015602.4	ENSP00000476687.1	Q5JTV8-1
TOR1AIP1	ENST00000271583.7 linkuse as main transcript	c.37G>A	p.Glu13Lys	missense_variant	1/11	5		ENSP00000271583.3	J3KN66
TOR1AIP1	ENST00000528443.6 linkuse as main transcript	c.37G>A	p.Glu13Lys	missense_variant	1/10	2		ENSP00000435365.2	Q5JTV8-3
ENSG00000272906	ENST00000610272.1 linkuse as main transcript	n.57C>T		non_coding_transcript_exon_variant	1/1	6

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152184

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:

0.00135

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.0000705

AC:

AN:

113552

Hom.:

AF XY:

0.0000669

AC XY:

AN XY:

59768

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000709

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000549

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000357

GnomAD4 exome

AF:

0.0000218

AC:

AN:

1327830

Hom.:

Cov.:

AF XY:

0.0000123

AC XY:

AN XY:

647868

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000194

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000667

Gnomad4 OTH exome

AF:

0.000275

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00135

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000957

Bravo

AF:

0.0000491

ExAC

AF:

0.0000614

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Autosomal recessive limb-girdle muscular dystrophy type 2Y

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 09, 2022	This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 13 of the TOR1AIP1 protein (p.Glu13Lys). This variant is present in population databases (rs749592068, gnomAD 0.09%). 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: 476284). 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: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Apr 11, 2023	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 01, 2024

The c.37G>A (p.E13K) alteration is located in exon 1 (coding exon 1) of the TOR1AIP1 gene. This alteration results from a G to A substitution at nucleotide position 37, causing the glutamic acid (E) at amino acid position 13 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Oct 01, 2024

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis indicates that this missense variant does not alter protein structure/function -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.039

BayesDel_noAF

Uncertain

0.060

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

.;.;T

Eigen

Benign

0.091

Eigen_PC

Benign

0.022

FATHMM_MKL

Benign

0.66

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Benign

0.025

MetaRNN

Benign

0.027

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

L;.;L

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.5

N;N;.

REVEL

Benign

0.20

Sift

Uncertain

0.016

D;D;.

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

0.94

.;.;P

Vest4

0.28

MVP

0.46

MPC

0.47

ClinPred

0.17

GERP RS

5.3

Varity_R

0.12

gMVP

0.22

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