chr1-179884747-C-CTCA

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 1P and 16B. PM4_SupportingBP6_Very_StrongBS1BS2

The NM_015602.4(TOR1AIP1):​c.531_532insTCA​(p.Val177_Arg178insSer) variant causes a conservative inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000488 in 1,611,616 control chromosomes in the GnomAD database, including 5 homozygotes. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00070 ( 2 hom., cov: 33)
Exomes 𝑓: 0.00047 ( 3 hom. )

Consequence

TOR1AIP1
NM_015602.4 conservative_inframe_insertion

Scores

Not classified

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.115
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

PM4
Nonframeshift variant in NON repetitive region in NM_015602.4. Strenght limited to Supporting due to length of the change: 1aa.
BP6
Variant 1-179884747-C-CTCA is Benign according to our data. Variant chr1-179884747-C-CTCA is described in ClinVar as [Likely_benign]. Clinvar id is 476286.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000696 (106/152304) while in subpopulation EAS AF= 0.0187 (97/5186). AF 95% confidence interval is 0.0157. There are 2 homozygotes in gnomad4. There are 65 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
TOR1AIP1NM_015602.4 linkuse as main transcriptc.531_532insTCA p.Val177_Arg178insSer conservative_inframe_insertion 2/10 ENST00000606911.7 NP_056417.2 Q5JTV8-1
TOR1AIP1NM_001267578.2 linkuse as main transcriptc.531_532insTCA p.Val177_Arg178insSer conservative_inframe_insertion 2/10 NP_001254507.1 Q5JTV8-3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
TOR1AIP1ENST00000606911.7 linkuse as main transcriptc.531_532insTCA p.Val177_Arg178insSer conservative_inframe_insertion 2/101 NM_015602.4 ENSP00000476687.1 Q5JTV8-1

Frequencies

GnomAD3 genomes
AF:
0.000703
AC:
107
AN:
152186
Hom.:
2
Cov.:
33
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:
0.0189
Gnomad SAS
AF:
0.00103
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000991
AC:
246
AN:
248180
Hom.:
0
AF XY:
0.000999
AC XY:
134
AN XY:
134194
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0119
Gnomad SAS exome
AF:
0.000870
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000177
Gnomad OTH exome
AF:
0.000166
GnomAD4 exome
AF:
0.000467
AC:
681
AN:
1459312
Hom.:
3
Cov.:
30
AF XY:
0.000470
AC XY:
341
AN XY:
725918
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0138
Gnomad4 SAS exome
AF:
0.000899
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000144
Gnomad4 OTH exome
AF:
0.000647
GnomAD4 genome
AF:
0.000696
AC:
106
AN:
152304
Hom.:
2
Cov.:
33
AF XY:
0.000873
AC XY:
65
AN XY:
74476
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.0187
Gnomad4 SAS
AF:
0.00103
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000441
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.000260
Hom.:
0
Bravo
AF:
0.000865
Asia WGS
AF:
0.00549
AC:
19
AN:
3478

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Autosomal recessive limb-girdle muscular dystrophy type 2Y Benign:2
Likely benign, criteria provided, single submitterclinical testingGenome-Nilou LabApr 11, 2023- -
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 29, 2024- -
not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingGeneDxFeb 16, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

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.

Other links and lift over

dbSNP: rs145521179; hg19: chr1-179853882; COSMIC: COSV54868738; COSMIC: COSV54868738; API