Variant rs778082287 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_033163.5(FGF8):c.497A>G(p.Asn166Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,870 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FGF8
NM_033163.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.87

Variant links:

Genes affected

FGF8 (HGNC:3686): (fibroblast growth factor 8) 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 protein is known to be a factor that supports androgen and anchorage independent growth of mammary tumor cells. Overexpression of this gene has been shown to increase tumor growth and angiogensis. The adult expression of this gene is restricted to testes and ovaries. Temporal and spatial pattern of this gene expression suggests its function as an embryonic epithelial factor. Studies of the mouse and chick homologs revealed roles in midbrain and limb development, organogenesis, embryo gastrulation and left-right axis determination. The alternative splicing of this gene results in four transcript variants. [provided by RefSeq, Jul 2008]

FGF8 links:

LOC105378457 (HGNC:):

LOC105378457 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FGF8	NM_033163.5 linkuse as main transcript	c.497A>G	p.Asn166Ser	missense_variant	6/6	ENST00000320185.7
LOC105378457	XR_007062268.1 linkuse as main transcript	n.148T>C		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FGF8	ENST00000320185.7 linkuse as main transcript	c.497A>G	p.Asn166Ser	missense_variant	6/6	1	NM_033163.5	A2	P55075-4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250692

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135596

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460870

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726784

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Holoprosencephaly sequence

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Muenke lab, National Institutes of Health

Apr 18, 2018

Statistically different in zebrafish functional studies compared to the normal FGF8 isoform. However, experimental variability was detected between repeated independent studies. Experimental and bioinformatic predictions suggest a weak hypomorph. ACMG: PS3;PP3 (variable hypomorph; site affected by glycosylation based on this variant as well as synthetic codon variants tested for glycosylation changes reflected by altered electrophoretic mobility in Western blots). Stronger loss of activity seen with purely synthetic codon variants. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Uncertain

0.027

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

DANN

Uncertain

0.99

Eigen

Benign

0.075

Eigen_PC

Benign

0.089

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.94

D;D;D;D;D

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.71

D;D;D;D;D

MetaSVM

Uncertain

0.59

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.85

Sift4G

Uncertain

0.030

D;D;D;D;D

Polyphen

1.0, 0.029, 0.15

.;D;B;B;B

Vest4

0.60

MutPred

0.68

.;Loss of stability (P = 0.099);.;.;.;

MVP

0.73

MPC

0.87

ClinPred

0.53

GERP RS

3.7

Varity_R

0.89

gMVP

0.59

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