rs3842773

Positions:

• chr11-2157387-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NR_003512.4(INS-IGF2):​n.246+3398C>T variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0527 in 152,268 control chromosomes in the GnomAD database, including 697 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.053 (697 hom., cov: 34)
• Consequence: INS-IGF2 NR_003512.4 intron, non_coding_transcript
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.67

Genes affected

INS-IGF2 (HGNC:):

IGF2 (HGNC:5466): (insulin like growth factor 2) This gene encodes a member of the insulin family of polypeptide growth factors, which are involved in development and growth. It is an imprinted gene, expressed only from the paternal allele, and epigenetic changes at this locus are associated with Wilms tumour, Beckwith-Wiedemann syndrome, rhabdomyosarcoma, and Silver-Russell syndrome. A read-through INS-IGF2 gene exists, whose 5' region overlaps the INS gene and the 3' region overlaps this gene. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2010]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.181 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
INS-IGF2	NR_003512.4	n.246+3398C>T		intron_variant, non_coding_transcript_variant
INS-IGF2	NM_001042376.3	c.187+3398C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IGF2	ENST00000481781.3	c.-469+880C>T		intron_variant		5		P4
IGF2	ENST00000476874.1	n.70+880C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.0525 AC: 7994 AN: 152150 Hom.: 691 Cov.: 34

Gnomad AFR AF: 0.184

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0167

Gnomad ASJ AF: 0.00173

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00949

Gnomad NFE AF: 0.000573

Gnomad OTH AF: 0.0325

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0527 AC: 8020 AN: 152268 Hom.: 697 Cov.: 34 AF XY: 0.0506 AC XY: 3765 AN XY: 74456

Gnomad4 AFR AF: 0.184

Gnomad4 AMR AF: 0.0167

Gnomad4 ASJ AF: 0.00173

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000573

Gnomad4 OTH AF: 0.0322

Alfa AF: 0.0407 Hom.: 60

Bravo AF: 0.0605

Asia WGS AF: 0.00982 AC: 35 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	1.3
DANN	Benign	0.42

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: rs3842773; hg19: chr11-2178617;