1-179917932-A-C

Variant names:

• chr1-179917932-A-C
• rs886037845
• NM_015602.4:c.1445A>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_015602.4(TOR1AIP1):​c.1445A>C​(p.Glu482Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TOR1AIP1 NM_015602.4 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 8.82
• Publications: 15 publications found

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 Gene-Disease associations (from GenCC):

• TOR1AIP1-related multisystem disorder

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• TOR1AIP1-related myopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• autosomal recessive limb-girdle muscular dystrophy type 2Y

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.979

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015602.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TOR1AIP1	NM_015602.4	MANE Select	c.1445A>C	p.Glu482Ala	missense	Exon 10 of 10	NP_056417.2
	TOR1AIP1	NM_001267578.2		c.1448A>C	p.Glu483Ala	missense	Exon 10 of 10	NP_001254507.1	Q5JTV8-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TOR1AIP1	ENST00000606911.7	TSL:1 MANE Select	c.1445A>C	p.Glu482Ala	missense	Exon 10 of 10	ENSP00000476687.1	Q5JTV8-1
	TOR1AIP1	ENST00000435319.8	TSL:1	c.1082A>C	p.Glu361Ala	missense	Exon 10 of 10	ENSP00000393292.3	Q5JTV8-4
	TOR1AIP1	ENST00000271583.7	TSL:5	c.1493A>C	p.Glu498Ala	missense	Exon 11 of 11	ENSP00000271583.3	J3KN66

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.86
PhyloP100		8.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.78
gMVP		0.78
Mutation Taster		=1/99	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs886037845; hg19: chr1-179887067;