Genetic Variant IGF1R:p.Arg659Pro (chr15-98916111-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP2BP4

The NM_000875.5(IGF1R):c.1976G>C(p.Arg659Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,172 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

IGF1R
NM_000875.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.38

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 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.

BP4

Computational evidence support a benign effect (MetaRNN=0.28295225).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IGF1R	NM_000875.5 link	c.1976G>C	p.Arg659Pro	missense_variant	Exon 9 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.1976G>C	p.Arg659Pro	missense_variant	Exon 9 of 21		NM_000875.5	ENSP00000497069.1	P08069
IGF1R	ENST00000559925.5 link	n.1976G>C		non_coding_transcript_exon_variant	Exon 9 of 10	1
IGF1R	ENST00000649865.1 link	c.1976G>C	p.Arg659Pro	missense_variant	Exon 9 of 21			ENSP00000496919.1	C9J5X1
IGF1R	ENST00000560144.1 link	n.204G>C		non_coding_transcript_exon_variant	Exon 2 of 4	3		ENSP00000456950.1	H3BSZ8

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251448

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135902

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.94

BayesDel_addAF

Benign

-0.022

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.59

D;.;D;.

Eigen

Benign

-0.099

Eigen_PC

Benign

-0.062

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.94

.;.;D;D

M_CAP

Benign

0.025

MetaRNN

Benign

0.28

T;T;T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.6

L;.;L;.

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.7

.;.;N;N

REVEL

Uncertain

0.43

Sift

Benign

0.048

.;.;D;D

Sift4G

Benign

0.22

.;.;T;T

Polyphen

0.27

B;P;B;P

Vest4

0.69, 0.70

MutPred

0.59

Loss of catalytic residue at R659 (P = 0.0616);Loss of catalytic residue at R659 (P = 0.0616);Loss of catalytic residue at R659 (P = 0.0616);Loss of catalytic residue at R659 (P = 0.0616);

MVP

0.84

MPC

1.2

ClinPred

0.33

GERP RS

0.57

Varity_R

0.42

gMVP

0.75

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over