Genetic Variant NM_002007.4:c.137G>T (chr11-69774948-C-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_002007.4(FGF4):c.137G>T(p.Arg46Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000528 in 1,325,344 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0000053 ( 0 hom. )

Consequence

FGF4
NM_002007.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.22

Variant links:

Genes affected

FGF4 (HGNC:3682): (fibroblast growth factor 4) 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 oncogenic transforming activity. This gene and FGF3, another oncogenic growth factor, are located closely on chromosome 11. Co-amplification of both genes was found in various kinds of human tumors. Studies on the mouse homolog suggested a function in bone morphogenesis and limb development through the sonic hedgehog (SHH) signaling pathway. [provided by RefSeq, Jul 2008]

FGF4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGF4	NM_002007.4 link	c.137G>T	p.Arg46Leu	missense_variant	Exon 1 of 3	ENST00000168712.3	NP_001998.1	P08620-1A0A7U3JW12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FGF4	ENST00000168712.3 link	c.137G>T	p.Arg46Leu	missense_variant	Exon 1 of 3	1	NM_002007.4	ENSP00000168712.1		P08620-1
FGF4	ENST00000538040.1 link	n.217G>T		non_coding_transcript_exon_variant	Exon 1 of 2	1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000528

AC:

AN:

1325344

Hom.:

Cov.:

AF XY:

0.00000612

AC XY:

AN XY:

653568

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:

0.00000664

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 28, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.137G>T (p.R46L) alteration is located in exon 1 (coding exon 1) of the FGF4 gene. This alteration results from a G to T substitution at nucleotide position 137, causing the arginine (R) at amino acid position 46 to be replaced by a leucine (L). 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

0.27

BayesDel_addAF

Benign

-0.087

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.63

Eigen

Benign

-0.12

Eigen_PC

Benign

-0.050

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.88

M_CAP

Pathogenic

0.76

MetaRNN

Uncertain

0.45

MetaSVM

Benign

-0.67

MutationAssessor

Benign

1.9

PrimateAI

Pathogenic

0.92

PROVEAN

Benign

-2.2

REVEL

Benign

0.15

Sift

Benign

0.17

Sift4G

Benign

0.097

Polyphen

0.64

Vest4

0.30

MutPred

0.45

Loss of disorder (P = 0.0445);

MVP

0.64

MPC

1.4

ClinPred

0.86

GERP RS

3.2

Varity_R

0.15

gMVP

0.75

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