rs137852661

Positions:

• chr10-101775168-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP5 BP4

The NM_033163.5(FGF8):​c.118T>C​(p.Phe40Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: FGF8 NM_033163.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.287

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 10-101775168-A-G is Pathogenic according to our data. Variant chr10-101775168-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 9123.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.336237). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FGF8	NM_033163.5	c.118T>C	p.Phe40Leu	missense_variant	3/6	ENST00000320185.7	NP_149353.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FGF8	ENST00000320185.7	c.118T>C	p.Phe40Leu	missense_variant	3/6	1	NM_033163.5	ENSP00000321797.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Hypogonadotropic hypogonadism 6 with or without anosmia Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Aug 01, 2008

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.41
BayesDel_addAF	Uncertain	0.049	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	13
DANN	Benign	0.92
DEOGEN2	Uncertain	0.52	D;.
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.4
FATHMM_MKL	Benign	0.016	N
LIST_S2	Benign	0.37	T;T
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.34	T;T
MetaSVM	Benign	-0.91	T
MutationAssessor	Benign	1.0	L;L
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-0.50	N;N
REVEL	Uncertain	0.46
Sift	Benign	0.84	T;T
Sift4G	Benign	0.14	T;T
Polyphen		0.0	B;B
Vest4		0.26
MutPred		0.33		Gain of helix (P = 0.0696);Gain of helix (P = 0.0696);
MVP		0.96
MPC		0.96
ClinPred		0.042	T
GERP RS		-4.0
Varity_R		0.038
gMVP		0.53

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs137852661; hg19: chr10-103534925;