rs17473132

Positions:

• chr4-122855376-G-A

Variant summary

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

The NM_001361665.2(FGF2):​c.179-20945G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0773 in 152,204 control chromosomes in the GnomAD database, including 570 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 0.077 (570 hom., cov: 32)
• Consequence: FGF2 NM_001361665.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.777

Genes affected

FGF2 (HGNC:3676): (fibroblast growth factor 2) The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members bind heparin and possess broad mitogenic and angiogenic activities. This protein has been implicated in diverse biological processes, such as limb and nervous system development, wound healing, and tumor growth. The mRNA for this gene contains multiple polyadenylation sites, and is alternatively translated from non-AUG (CUG) and AUG initiation codons, resulting in five different isoforms with distinct properties. The CUG-initiated isoforms are localized in the nucleus and are responsible for the intracrine effect, whereas, the AUG-initiated form is mostly cytosolic and is responsible for the paracrine and autocrine effects of this FGF. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.169 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FGF2	NM_001361665.2	c.179-20945G>A		intron_variant		ENST00000644866.2	NP_001348594.1
FGF2	NM_002006.6	c.578-20945G>A		intron_variant			NP_001997.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FGF2	ENST00000644866.2	c.179-20945G>A		intron_variant			NM_001361665.2	ENSP00000494222	P1
FGF2	ENST00000264498.9	c.578-20945G>A		intron_variant		1		ENSP00000264498
FGF2	ENST00000608478.1	c.179-20945G>A		intron_variant		1		ENSP00000477134	P1

Frequencies

GnomAD3 genomes AF: 0.0773 AC: 11760 AN: 152086 Hom.: 571 Cov.: 32

Gnomad AFR AF: 0.0433

Gnomad AMI AF: 0.0362

Gnomad AMR AF: 0.175

Gnomad ASJ AF: 0.124

Gnomad EAS AF: 0.0666

Gnomad SAS AF: 0.0794

Gnomad FIN AF: 0.0853

Gnomad MID AF: 0.149

Gnomad NFE AF: 0.0726

Gnomad OTH AF: 0.102

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

GnomAD4 genome AF: 0.0773 AC: 11758 AN: 152204 Hom.: 570 Cov.: 32 AF XY: 0.0800 AC XY: 5956 AN XY: 74406

Gnomad4 AFR AF: 0.0432

Gnomad4 AMR AF: 0.175

Gnomad4 ASJ AF: 0.124

Gnomad4 EAS AF: 0.0662

Gnomad4 SAS AF: 0.0790

Gnomad4 FIN AF: 0.0853

Gnomad4 NFE AF: 0.0726

Gnomad4 OTH AF: 0.102

Alfa AF: 0.0763 Hom.: 175

Bravo AF: 0.0832

Asia WGS AF: 0.0560 AC: 195 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	15
DANN	Benign	0.67

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: rs17473132; hg19: chr4-123776531;