15-98957350-G-C

Position:

chr15-98957350-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_000875.5(IGF1R):c.4012G>C(p.Ala1338Pro) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,459,660 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1338T) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

IGF1R
NM_000875.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.93

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:):

SYNM-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 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), IGF1R. . Trascript score misZ 4.6449 (greater than threshold 3.09). GenCC has associacion of gene with growth delay due to insulin-like growth factor I resistance.

BP4

Computational evidence support a benign effect (MetaRNN=0.2155793).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IGF1R	NM_000875.5 linkuse as main transcript	c.4012G>C	p.Ala1338Pro	missense_variant	21/21	ENST00000650285.1	NP_000866.1	P08069

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
IGF1R	ENST00000650285.1 linkuse as main transcript	c.4012G>C	p.Ala1338Pro	missense_variant	21/21		NM_000875.5	ENSP00000497069.1	P08069
IGF1R	ENST00000649865.1 linkuse as main transcript	c.4009G>C	p.Ala1337Pro	missense_variant	21/21			ENSP00000496919.1	C9J5X1
SYNM-AS1	ENST00000559468.1 linkuse as main transcript	n.349-2962C>G		intron_variant		4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000400

AC:

AN:

249892

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135370

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:

0.00000887

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1459660

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

725780

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 23, 2023

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. This variant has not been reported in the literature in individuals affected with IGF1R-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.0009%). This sequence change replaces alanine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 1338 of the IGF1R protein (p.Ala1338Pro). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.074

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.41

T;.;T;.

Eigen

Benign

-0.23

Eigen_PC

Benign

-0.044

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.88

.;.;D;D

M_CAP

Benign

0.065

MetaRNN

Benign

0.22

T;T;T;T

MetaSVM

Benign

-0.82

MutationAssessor

Benign

0.10

N;.;N;.

PrimateAI

Uncertain

0.78

PROVEAN

Benign

0.060

.;.;N;N

REVEL

Uncertain

0.30

Sift

Benign

0.24

.;.;T;T

Sift4G

Benign

0.34

.;.;T;T

Polyphen

0.029

B;B;B;B

Vest4

0.069, 0.080

MutPred

0.36

Gain of sheet (P = 0.0344);.;Gain of sheet (P = 0.0344);.;

MVP

0.44

MPC

0.079

ClinPred

0.26

GERP RS

5.7

Varity_R

0.14

gMVP

0.64

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

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