chr11-69810513-C-T

Position:

chr11-69810513-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 4P and 3B. PM1PM2BP4_ModerateBS1_Supporting

The NM_005247.4(FGF3):c.512G>A(p.Arg171His) variant causes a missense change. The variant allele was found at a frequency of 0.0000684 in 1,609,168 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00043 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

FGF3
NM_005247.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.40

Variant links:

Genes affected

FGF3 (HGNC:3681): (fibroblast growth factor 3) The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members possess broad mitogenic and cell survival activities and are involved in a variety of biological processes including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion. This gene was identified by its similarity with mouse fgf3/int-2, a proto-oncogene activated in virally induced mammary tumors in the mouse. Frequent amplification of this gene has been found in human tumors, which may be important for neoplastic transformation and tumor progression. Studies of the similar genes in mouse and chicken suggested the role in inner ear formation. [provided by RefSeq, Jul 2008]

FGF3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM1

In a chain Fibroblast growth factor 3 (size 221) in uniprot entity FGF3_HUMAN there are 18 pathogenic changes around while only 4 benign (82%) in NM_005247.4

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0999549).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000427 (65/152336) while in subpopulation AFR AF= 0.00144 (60/41584). AF 95% confidence interval is 0.00115. There are 0 homozygotes in gnomad4. There are 31 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FGF3	NM_005247.4 linkuse as main transcript	c.512G>A	p.Arg171His	missense_variant	3/3	ENST00000334134.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FGF3	ENST00000334134.4 linkuse as main transcript	c.512G>A	p.Arg171His	missense_variant	3/3	1	NM_005247.4	P1
FGF3	ENST00000646078.1 linkuse as main transcript	n.359G>A		non_coding_transcript_exon_variant	3/3

Frequencies

GnomAD3 genomes

AF:

0.000420

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.00

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000109

AC:

AN:

238996

Hom.:

AF XY:

0.0000689

AC XY:

AN XY:

130534

show subpopulations

Gnomad AFR exome

AF:

0.00152

Gnomad AMR exome

AF:

0.0000592

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000332

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000309

AC:

AN:

1456832

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

724540

show subpopulations

Gnomad4 AFR exome

AF:

0.00108

Gnomad4 AMR exome

AF:

0.0000226

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000541

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.000427

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.000416

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.00144

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.000378

ESP6500AA

AF:

0.00137

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000174

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Mar 21, 2023	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 04, 2023	This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 171 of the FGF3 protein (p.Arg171His). This variant is present in population databases (rs35983315, gnomAD 0.2%). This variant has not been reported in the literature in individuals affected with FGF3-related conditions. ClinVar contains an entry for this variant (Variation ID: 2076938). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.26

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.90

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.93

M_CAP

Uncertain

0.24

MetaRNN

Benign

0.10

MetaSVM

Uncertain

-0.087

MutationAssessor

Uncertain

2.7

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.79

PROVEAN

Uncertain

-3.6

REVEL

Uncertain

0.33

Sift

Uncertain

0.021

Sift4G

Uncertain

0.0060

Polyphen

1.0

Vest4

0.40

MVP

0.87

MPC

1.1

ClinPred

0.19

GERP RS

4.0

Varity_R

0.26

gMVP

0.27

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