19-7142813-T-G

Position:

• chr19-7142813-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000208.4(INSR):​c.2542+3A>C variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: INSR NM_000208.4 splice_region, intron
• Scores: Splicing: ADA: 0.9932
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.07

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
INSR	NM_000208.4	c.2542+3A>C		splice_region_variant, intron_variant		ENST00000302850.10	NP_000199.2
INSR	NM_001079817.3	c.2506+3A>C		splice_region_variant, intron_variant			NP_001073285.1
INSR	XM_011527988.3	c.2542+3A>C		splice_region_variant, intron_variant			XP_011526290.2
INSR	XM_011527989.4	c.2506+3A>C		splice_region_variant, intron_variant			XP_011526291.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
INSR	ENST00000302850.10	c.2542+3A>C		splice_region_variant, intron_variant		1	NM_000208.4	ENSP00000303830.4
INSR	ENST00000341500.9	c.2506+3A>C		splice_region_variant, intron_variant		1		ENSP00000342838.4
INSR	ENST00000597211.1	n.225+3A>C		splice_region_variant, intron_variant		3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249188 Hom.: 0 AF XY: 0.00000740 AC XY: 1 AN XY: 135094

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000895

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.39
CADD	Benign	23
DANN	Benign	0.79

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	0.99
dbscSNV1_RF	Pathogenic	0.74
SpliceAI score (max)		0.14		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

Other links and lift over

dbSNP: rs13306451; hg19: chr19-7142824;