6-159969361-C-G

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_000876.4(IGF2R):c.115C>G(p.Gln39Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000173 in 1,294,430 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 0 hom. )

Consequence

IGF2R
NM_000876.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.362

Variant links:

Genes affected

IGF2R (HGNC:5467): (insulin like growth factor 2 receptor) This gene encodes a receptor for both insulin-like growth factor 2 and mannose 6-phosphate. The binding sites for each ligand are located on different segments of the protein. This receptor has various functions, including in the intracellular trafficking of lysosomal enzymes, the activation of transforming growth factor beta, and the degradation of insulin-like growth factor 2. Mutation or loss of heterozygosity of this gene has been association with risk of hepatocellular carcinoma. The orthologous mouse gene is imprinted and shows exclusive expression from the maternal allele; however, imprinting of the human gene may be polymorphic, as only a minority of individuals showed biased expression from the maternal allele (PMID:8267611). [provided by RefSeq, Nov 2015]

IGF2R links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.027146578).

BS2

High AC in GnomAd at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IGF2R	NM_000876.4 linkuse as main transcript	c.115C>G	p.Gln39Glu	missense_variant	1/48	ENST00000356956.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
IGF2R	ENST00000356956.6 linkuse as main transcript	c.115C>G	p.Gln39Glu	missense_variant	1/48	1	NM_000876.4	P1
IGF2R	ENST00000677704.1 linkuse as main transcript	c.115C>G	p.Gln39Glu	missense_variant, NMD_transcript_variant	1/49
IGF2R	ENST00000676781.1 linkuse as main transcript	c.115C>G	p.Gln39Glu	missense_variant, NMD_transcript_variant	1/49

Frequencies

GnomAD3 genomes

AF:

0.0000659

AC:

AN:

151798

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

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:

0.0000883

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000187

AC:

214

AN:

1142632

Hom.:

Cov.:

AF XY:

0.000191

AC XY:

106

AN XY:

554252

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:

0.000223

Gnomad4 OTH exome

AF:

0.0000442

GnomAD4 genome

AF:

0.0000659

AC:

AN:

151798

Hom.:

Cov.:

AF XY:

0.0000809

AC XY:

AN XY:

74134

show subpopulations

Gnomad4 AFR

AF:

0.0000966

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:

0.0000883

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000907

ExAC

AF:

0.0000109

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 26, 2023

The c.115C>G (p.Q39E) alteration is located in exon 1 (coding exon 1) of the IGF2R gene. This alteration results from a C to G substitution at nucleotide position 115, causing the glutamine (Q) at amino acid position 39 to be replaced by a glutamic acid (E). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.053

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.80

Cadd

Benign

7.1

Dann

Benign

0.57

DEOGEN2

Benign

0.099

T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.020

M_CAP

Benign

0.040

MetaRNN

Benign

0.027

T;T

MetaSVM

Benign

-0.99

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.43

N;.

REVEL

Benign

0.051

Sift

Benign

1.0

T;.

Sift4G

Benign

1.0

T;.

Polyphen

0.013

B;B

Vest4

0.066

MutPred

0.19

Gain of disorder (P = 0.1314);Gain of disorder (P = 0.1314);

MVP

0.25

MPC

0.10

ClinPred

0.052

GERP RS

-0.36

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.050

gMVP

0.26

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