15-98957101-A-C

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2

The NM_000875.5(IGF1R):c.3763A>C(p.Met1255Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

IGF1R
NM_000875.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.29

Variant links:

Genes affected

IGF1R (HGNC:5465): (insulin like growth factor 1 receptor) This receptor binds insulin-like growth factor with a high affinity. It has tyrosine kinase activity. The insulin-like growth factor I receptor plays a critical role in transformation events. Cleavage of the precursor generates alpha and beta subunits. It is highly overexpressed in most malignant tissues where it functions as an anti-apoptotic agent by enhancing cell survival. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, May 2014]

IGF1R links:

SYNM-AS1 (HGNC:55421): (SYNM antisense RNA 1)

SYNM-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the IGF1R gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 12 curated pathogenic missense variants (we use a threshold of 10). The gene has 19 curated benign missense variants. Trascript score misZ: 4.6449 (above the threshold of 3.09). GenCC associations: The gene is linked to growth delay due to insulin-like growth factor I resistance.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IGF1R	NM_000875.5 link	c.3763A>C	p.Met1255Leu	missense_variant	Exon 21 of 21	ENST00000650285.1	NP_000866.1	P08069

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
IGF1R	ENST00000650285.1 link	c.3763A>C	p.Met1255Leu	missense_variant	Exon 21 of 21		NM_000875.5	ENSP00000497069.1	P08069
IGF1R	ENST00000649865.1 link	c.3760A>C	p.Met1254Leu	missense_variant	Exon 21 of 21			ENSP00000496919.1	C9J5X1
IGF1R	ENST00000558751.1 link	n.357A>C		non_coding_transcript_exon_variant	Exon 2 of 2	4
SYNM-AS1	ENST00000559468.1 link	n.349-2713T>G		intron_variant	Intron 3 of 3	4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251490

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135916

show subpopulations

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:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.00000378

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

IGF1R-related disorder

Uncertain:1

Aug 02, 2023

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The IGF1R c.3763A>C variant is predicted to result in the amino acid substitution p.Met1255Leu. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.00088% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/15-99500330-A-C). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.030

CADD

Uncertain

DANN

Benign

0.95

DEOGEN2

Uncertain

0.69

D;.;D;.

Eigen

Benign

-0.11

Eigen_PC

Benign

0.16

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

.;.;D;D

M_CAP

Benign

0.047

MetaRNN

Uncertain

0.43

T;T;T;T

MetaSVM

Benign

-0.68

MutationAssessor

Benign

-0.81

N;.;N;.

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-1.5

.;.;N;N

REVEL

Uncertain

0.40

Sift

Benign

0.26

.;.;T;T

Sift4G

Benign

0.44

.;.;T;T

Polyphen

0.0010

B;B;B;B

Vest4

0.60, 0.61

MutPred

0.49

Gain of methylation at K1254 (P = 0.0365);.;Gain of methylation at K1254 (P = 0.0365);.;

MVP

0.86

MPC

0.35

ClinPred

0.49

GERP RS

5.6

Varity_R

0.55

gMVP

0.60

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over