11-2159863-A-C

Position:

• chr11-2159863-A-C

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Moderate PP5_Moderate

The NM_000207.3(INS):​c.322T>G​(p.Tyr108Asp) 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 Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y108C) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: INS NM_000207.3 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 5.21

Genes affected

INS (HGNC:6081): (insulin) This gene encodes insulin, a peptide hormone that plays a vital role in the regulation of carbohydrate and lipid metabolism. After removal of the precursor signal peptide, proinsulin is post-translationally cleaved into three peptides: the B chain and A chain peptides, which are covalently linked via two disulfide bonds to form insulin, and C-peptide. Binding of insulin to the insulin receptor (INSR) stimulates glucose uptake. A multitude of mutant alleles with phenotypic effects have been identified, including insulin-dependent diabetes mellitus, permanent neonatal diabetes diabetes mellitus, maturity-onset diabetes of the young type 10 and hyperproinsulinemia. There is a read-through gene, INS-IGF2, which overlaps with this gene at the 5' region and with the IGF2 gene at the 3' region. [provided by RefSeq, May 2020]

INS-IGF2 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 2 uncertain in NM_000207.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr11-2159862-T-C is described in ClinVar as [Likely_risk_allele]. Clinvar id is 21120.Status of the report is criteria_provided_single_submitter, 1 stars. We mark this variant Likely_pathogenic, oryginal submissions are: {not_provided=2, Likely_risk_allele=1}.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.865
• PP5: Variant 11-2159863-A-C is Pathogenic according to our data. Variant chr11-2159863-A-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1526010.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
INS	NM_000207.3	c.322T>G	p.Tyr108Asp	missense_variant	3/3	ENST00000381330.5
INS-IGF2	NR_003512.4	n.246+922T>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
INS	ENST00000381330.5	c.322T>G	p.Tyr108Asp	missense_variant	3/3	1	NM_000207.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Neonatal diabetes mellitus Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Molecular Genetics, Madras Diabetes Research Foundation

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.55
CADD	Pathogenic	29
DANN	Uncertain	0.99
Eigen	Pathogenic	0.77
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.21	T
M_CAP	Pathogenic	0.92	D
MetaRNN	Pathogenic	0.87	D
MetaSVM	Pathogenic	1.0	D
MutationTaster	Benign	1.0	D;D;D;D;D;D
PROVEAN	Benign	-0.82	N
REVEL	Pathogenic	0.77
Sift	Uncertain	0.027	D
MutPred		0.63		Gain of loop (P = 0.0013);
MVP		0.95
ClinPred		1.0	D
GERP RS		3.6

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-2181093;