rs121913142

Positions:

• chr19-7172333-A-C

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP2 PP3_Strong PP5

The ENST00000302850.10(INSR):​c.1225T>G​(p.Phe409Val) variant causes a missense change. 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 Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: INSR ENST00000302850.10 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 6.82

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), INSR. . Gene score misZ 3.8314 (greater than the threshold 3.09). Trascript score misZ 5.4593 (greater than threshold 3.09). GenCC has associacion of gene with insulin-resistance syndrome type A, hyperinsulinism due to INSR deficiency, Rabson-Mendenhall syndrome, Donohue syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.984
• PP5: Variant 19-7172333-A-C is Pathogenic according to our data. Variant chr19-7172333-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 14690.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
INSR	NM_000208.4	c.1225T>G	p.Phe409Val	missense_variant	5/22	ENST00000302850.10	NP_000199.2
INSR	NM_001079817.3	c.1225T>G	p.Phe409Val	missense_variant	5/21		NP_001073285.1
INSR	XM_011527988.3	c.1225T>G	p.Phe409Val	missense_variant	5/22		XP_011526290.2
INSR	XM_011527989.4	c.1225T>G	p.Phe409Val	missense_variant	5/21		XP_011526291.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
INSR	ENST00000302850.10	c.1225T>G	p.Phe409Val	missense_variant	5/22	1	NM_000208.4	ENSP00000303830	A2
INSR	ENST00000341500.9	c.1225T>G	p.Phe409Val	missense_variant	5/21	1		ENSP00000342838	P3
INSR	ENST00000598216.1	n.1200T>G		non_coding_transcript_exon_variant	5/10	1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Insulin-resistant diabetes mellitus Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jan 05, 1991

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.93
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.87	.;D
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.96	D;D
M_CAP	Pathogenic	0.55	D
MetaRNN	Pathogenic	0.98	D;D
MetaSVM	Uncertain	0.64	D
MutationAssessor	Pathogenic	3.1	M;M
MutationTaster	Benign	1.0	A;A
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-2.2	N;N
REVEL	Pathogenic	0.85
Sift	Uncertain	0.0070	D;D
Sift4G	Uncertain	0.033	D;D
Polyphen		0.95	P;D
Vest4		0.91
MutPred		0.89		Loss of stability (P = 0.0467);Loss of stability (P = 0.0467);
MVP		0.98
MPC		2.0
ClinPred		0.96	D
GERP RS		4.9
Varity_R		0.89
gMVP		0.90

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

Other links and lift over

dbSNP: rs121913142; hg19: chr19-7172344;