Variant 4-122827046-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The ENST00000264498.9(FGF2):c.271G>A(p.Gly91Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000444 in 1,126,156 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000068 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

FGF2
ENST00000264498.9 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.897

Variant links:

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]

FGF2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3224683).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FGF2	NM_001361665.2 linkuse as main transcript	c.-129G>A		5_prime_UTR_variant	1/3	ENST00000644866.2	NP_001348594.1
FGF2	NM_002006.6 linkuse as main transcript	c.271G>A	p.Gly91Arg	missense_variant	1/3		NP_001997.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FGF2	ENST00000264498.9 linkuse as main transcript	c.271G>A	p.Gly91Arg	missense_variant	1/3	1		ENSP00000264498		P09038-4
FGF2	ENST00000644866.2 linkuse as main transcript	c.-129G>A		5_prime_UTR_variant	1/3		NM_001361665.2	ENSP00000494222	P1	P09038-2
FGF2	ENST00000608478.1 linkuse as main transcript	c.-129G>A		5_prime_UTR_variant	1/3	1		ENSP00000477134	P1	P09038-2

Frequencies

GnomAD3 genomes

AF:

0.00000678

AC:

AN:

147446

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000151

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000409

AC:

AN:

978710

Hom.:

Cov.:

AF XY:

0.00000435

AC XY:

AN XY:

460196

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000538

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000234

Gnomad4 OTH exome

AF:

0.0000275

GnomAD4 genome

AF:

0.00000678

AC:

AN:

147446

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

71740

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000151

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 21, 2022

The c.271G>A (p.G91R) alteration is located in exon 1 (coding exon 1) of the FGF2 gene. This alteration results from a G to A substitution at nucleotide position 271, causing the glycine (G) at amino acid position 91 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.033

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.33

.;T

Eigen

Benign

-0.17

Eigen_PC

Benign

-0.23

FATHMM_MKL

Benign

0.090

LIST_S2

Benign

0.53

T;T

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.32

T;T

MetaSVM

Benign

-0.65

MutationAssessor

Benign

0.55

.;N

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

0.18

N;.

REVEL

Uncertain

0.36

Sift

Uncertain

0.0030

D;.

Sift4G

Uncertain

0.0030

D;D

Polyphen

1.0

.;D

MutPred

0.44

Gain of methylation at G91 (P = 0.0042);Gain of methylation at G91 (P = 0.0042);

MVP

0.93

ClinPred

0.46

GERP RS

1.0

Varity_R

0.25

gMVP

0.089

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over