rs12540724

Positions:

• chr7-45917703-A-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_000598.5(IGFBP3):​c.404-264T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0233 in 152,310 control chromosomes in the GnomAD database, including 60 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 0.023 (60 hom., cov: 32)
• Consequence: IGFBP3 NM_000598.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.708

Genes affected

IGFBP3 (HGNC:5472): (insulin like growth factor binding protein 3) This gene is a member of the insulin-like growth factor binding protein (IGFBP) family and encodes a protein with an IGFBP domain and a thyroglobulin type-I domain. The protein forms a ternary complex with insulin-like growth factor acid-labile subunit (IGFALS) and either insulin-like growth factor (IGF) I or II. In this form, it circulates in the plasma, prolonging the half-life of IGFs and altering their interaction with cell surface receptors. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0233 (3550/152310) while in subpopulation NFE AF= 0.0355 (2414/68024). AF 95% confidence interval is 0.0343. There are 60 homozygotes in gnomad4. There are 1739 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 60 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IGFBP3	NM_000598.5	c.404-264T>C		intron_variant		ENST00000613132.5
IGFBP3	NM_001013398.2	c.422-264T>C		intron_variant
IGFBP3	XM_047420325.1	c.404-264T>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IGFBP3	ENST00000613132.5	c.404-264T>C		intron_variant		5	NM_000598.5	P4

Frequencies

GnomAD3 genomes AF: 0.0233 AC: 3549 AN: 152192 Hom.: 60 Cov.: 32

Gnomad AFR AF: 0.00620

Gnomad AMI AF: 0.0121

Gnomad AMR AF: 0.0181

Gnomad ASJ AF: 0.00432

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00829

Gnomad FIN AF: 0.0461

Gnomad MID AF: 0.0222

Gnomad NFE AF: 0.0355

Gnomad OTH AF: 0.0186

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

GnomAD4 genome AF: 0.0233 AC: 3550 AN: 152310 Hom.: 60 Cov.: 32 AF XY: 0.0233 AC XY: 1739 AN XY: 74478

Gnomad4 AFR AF: 0.00618

Gnomad4 AMR AF: 0.0181

Gnomad4 ASJ AF: 0.00432

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00850

Gnomad4 FIN AF: 0.0461

Gnomad4 NFE AF: 0.0355

Gnomad4 OTH AF: 0.0184

Alfa AF: 0.0293 Hom.: 16

Bravo AF: 0.0209

Asia WGS AF: 0.00289 AC: 10 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.76
DANN	Benign	0.47

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: rs12540724; hg19: chr7-45957302;