rs1521479

Positions:

• chr15-98936042-C-T

Variant summary

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

The NM_000875.5(IGF1R):​c.3297+616C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.483 in 152,002 control chromosomes in the GnomAD database, including 18,593 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 0.48 (18593 hom., cov: 31)
• Consequence: IGF1R NM_000875.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.26

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.641 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IGF1R	NM_000875.5	c.3297+616C>T		intron_variant		ENST00000650285.1	NP_000866.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IGF1R	ENST00000650285.1	c.3297+616C>T		intron_variant			NM_000875.5	ENSP00000497069	P4
IGF1R	ENST00000649865.1	c.3294+616C>T		intron_variant				ENSP00000496919	A1

Frequencies

GnomAD3 genomes AF: 0.484 AC: 73442 AN: 151884 Hom.: 18577 Cov.: 31

Gnomad AFR AF: 0.319

Gnomad AMI AF: 0.545

Gnomad AMR AF: 0.565

Gnomad ASJ AF: 0.484

Gnomad EAS AF: 0.660

Gnomad SAS AF: 0.660

Gnomad FIN AF: 0.568

Gnomad MID AF: 0.547

Gnomad NFE AF: 0.524

Gnomad OTH AF: 0.521

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

GnomAD4 genome AF: 0.483 AC: 73487 AN: 152002 Hom.: 18593 Cov.: 31 AF XY: 0.490 AC XY: 36412 AN XY: 74290

Gnomad4 AFR AF: 0.319

Gnomad4 AMR AF: 0.565

Gnomad4 ASJ AF: 0.484

Gnomad4 EAS AF: 0.659

Gnomad4 SAS AF: 0.660

Gnomad4 FIN AF: 0.568

Gnomad4 NFE AF: 0.524

Gnomad4 OTH AF: 0.527

Alfa AF: 0.495 Hom.: 2356

Bravo AF: 0.475

Asia WGS AF: 0.642 AC: 2235 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
CADD	Benign	0.64
DANN	Benign	0.60

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: rs1521479; hg19: chr15-99479271;