rs1555735951

Variant names:

• chr19-7126585-ATCACTGGCA-CTTCC
• rs1555735951
• NM_000208.4:c.3003_3012delTGCCAGTGATinsGGAAG

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP2

The NM_000208.4(INSR):​c.3003_3012delTGCCAGTGATinsGGAAG​(p.Ser1001ArgfsTer37) variant causes a frameshift, missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as not provided (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: INSR NM_000208.4 frameshift, missense, splice_region
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 9.57
• Publications: 1 publications found

Genes affected

INSR (HGNC:6091): (insulin receptor) This gene encodes a member of the receptor tyrosine kinase family of proteins. The encoded preproprotein is proteolytically processed to generate alpha and beta subunits that form a heterotetrameric receptor. Binding of insulin or other ligands to this receptor activates the insulin signaling pathway, which regulates glucose uptake and release, as well as the synthesis and storage of carbohydrates, lipids and protein. Mutations in this gene underlie the inherited severe insulin resistance syndromes including type A insulin resistance syndrome, Donohue syndrome and Rabson-Mendenhall syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2015]

INSR Gene-Disease associations (from GenCC):

• insulin-resistance syndrome type A

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
• Donohue syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• hyperinsulinism due to INSR deficiency

  Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
• Rabson-Mendenhall syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the INSR gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 29 curated pathogenic missense variants (we use a threshold of 10). The gene has 9 curated benign missense variants. Gene score misZ: 3.8314 (above the threshold of 3.09). Trascript score misZ: 5.4593 (above the threshold of 3.09). GenCC associations: The gene is linked to Donohue syndrome, insulin-resistance syndrome type A, Rabson-Mendenhall syndrome, hyperinsulinism due to INSR deficiency.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000208.4. 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
	INSR	NM_000208.4	MANE Select	c.3003_3012delTGCCAGTGATinsGGAAG	p.Ser1001ArgfsTer37	frameshift missense splice_region	Exon 16 of 22	NP_000199.2	P06213-1
	INSR	NM_001079817.3		c.2967_2976delTGCCAGTGATinsGGAAG	p.Ser989ArgfsTer37	frameshift missense splice_region	Exon 15 of 21	NP_001073285.1	P06213-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	INSR	ENST00000302850.10	TSL:1 MANE Select	c.3003_3012delTGCCAGTGATinsGGAAG	p.Ser1001ArgfsTer37	frameshift missense splice_region	Exon 16 of 22	ENSP00000303830.4	P06213-1
	INSR	ENST00000341500.9	TSL:1	c.2967_2976delTGCCAGTGATinsGGAAG	p.Ser989ArgfsTer37	frameshift missense splice_region	Exon 15 of 21	ENSP00000342838.4	P06213-2
	INSR	ENST00000904791.1		c.3000_3009delTGCCAGTGATinsGGAAG	p.Ser1000ArgfsTer37	frameshift missense splice_region	Exon 16 of 22	ENSP00000574850.1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: not provided

Revision: no classification provided

Pathogenic	VUS	Benign	Condition
-	-	-	Leprechaunism syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.6
Mutation Taster		=0/200	disease causing (fs/PTC)

Splicing

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: rs1555735951;

hg19: chr19-7126596;