rs8191859

Positions:

• chr6-160064458-G-A
• chr6-160064458-G-C
• chr6-160064458-G-T

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_Strong BP6 BS1 BS2

The NM_000876.4(IGF2R):​c.3944G>A​(p.Gly1315Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000346 in 1,614,076 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in Lovd as Likely benign (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

• Frequency:
  • Genomes: 𝑓 0.00045 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00034 (3 hom.)
• Consequence: IGF2R NM_000876.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.57

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 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -13 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.01205796).
• BP6: Variant 6-160064458-G-A is Benign according to our data. Variant chr6-160064458-G-A is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000447 (68/152256) while in subpopulation EAS AF= 0.00986 (51/5174). AF 95% confidence interval is 0.0077. There are 0 homozygotes in gnomad4. There are 37 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 68 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IGF2R	NM_000876.4	c.3944G>A	p.Gly1315Glu	missense_variant	28/48	ENST00000356956.6	NP_000867.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IGF2R	ENST00000356956.6	c.3944G>A	p.Gly1315Glu	missense_variant	28/48	1	NM_000876.4	ENSP00000349437.1

Frequencies

GnomAD3 genomes AF: 0.000447 AC: 68 AN: 152138 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000524

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00983

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.000956

GnomAD3 exomes AF: 0.00111 AC: 279 AN: 251466 Hom.: 3 AF XY: 0.00110 AC XY: 150 AN XY: 135914

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.0000992

Gnomad EAS exome AF: 0.0146

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000326

GnomAD4 exome AF: 0.000336 AC: 491 AN: 1461820 Hom.: 3 Cov.: 31 AF XY: 0.000345 AC XY: 251 AN XY: 727226

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.0000894

Gnomad4 ASJ exome AF: 0.0000383

Gnomad4 EAS exome AF: 0.00854

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000531

Gnomad4 OTH exome AF: 0.00137

GnomAD4 genome AF: 0.000447 AC: 68 AN: 152256 Hom.: 0 Cov.: 32 AF XY: 0.000497 AC XY: 37 AN XY: 74440

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.000523

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00986

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000588

Gnomad4 OTH AF: 0.000946

Alfa AF: 0.000739 Hom.: 1

Bravo AF: 0.000604

ExAC AF: 0.00102 AC: 124

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.45	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.15	T;T
Eigen	Uncertain	0.44
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.87	.;D
MetaRNN	Benign	0.012	T;T
MetaSVM	Benign	-1.1	T
PrimateAI	Benign	0.47	T
PROVEAN	Uncertain	-2.4	N;.
REVEL	Benign	0.15
Sift	Uncertain	0.015	D;.
Sift4G	Uncertain	0.013	D;.
Polyphen		0.99	D;D
Vest4		0.47
MVP		0.35
MPC		1.1
ClinPred		0.096	T
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.46
gMVP		0.52

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

Other links and lift over

dbSNP: rs8191859; hg19: chr6-160485490;