NM_003867.4:c.323T>C

Variant names:

• chr8-22046599-T-C
• rs398123024
• NM_003867.4:c.323T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_003867.4(FGF17):​c.323T>C​(p.Ile108Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as risk factor (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: FGF17 NM_003867.4 missense
• Clinical Significance: risk factor no assertion criteria provided O:1
• Conservation: PhyloP100: 8.02
• Publications: 0 publications found

Genes affected

FGF17 (HGNC:3673): (fibroblast growth factor 17) This gene encodes a member of the fibroblast growth factor (FGF) family. Member of the FGF family 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 expressed during embryogenesis and in the adult cerebellum and cortex and may be essential for vascular growth and normal brain development. Mutations in this gene are the cause of hypogonadotropic hypogonadism 20 with or without anosmia. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

FGF17 Gene-Disease associations (from GenCC):

• hypogonadotropic hypogonadism 20 with or without anosmia

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• hypogonadotropic hypogonadism

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Kallmann syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.952

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGF17	NM_003867.4	c.323T>C	p.Ile108Thr	missense_variant	Exon 4 of 5	ENST00000359441.4	NP_003858.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FGF17	ENST00000359441.4	c.323T>C	p.Ile108Thr	missense_variant	Exon 4 of 5	1	NM_003867.4	ENSP00000352414.3
FGF17	ENST00000518533.5	c.290T>C	p.Ile97Thr	missense_variant	Exon 4 of 5	1		ENSP00000431041.1
FGF17	ENST00000524314.1	n.1693T>C		non_coding_transcript_exon_variant	Exon 2 of 3	2
FGF17	ENST00000521709.1	n.595+308T>C		intron_variant	Intron 2 of 2	3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: risk factor

Submissions summary: Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Hypogonadotropic hypogonadism 20 with or without anosmia Other:1

May 02, 2013

OMIM

Significance: risk factor

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.39
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.94	.;D
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.98	D;D
M_CAP	Pathogenic	0.42	D
MetaRNN	Pathogenic	0.95	D;D
MetaSVM	Uncertain	0.76	D
MutationAssessor	Uncertain	2.7	.;M
PhyloP100		8.0
PrimateAI	Uncertain	0.76	T
PROVEAN	Uncertain	-2.8	D;D
REVEL	Pathogenic	0.95
Sift	Uncertain	0.0030	D;D
Sift4G	Uncertain	0.044	D;D
Polyphen		0.99	D;D
Vest4		0.94
MutPred		0.80		.;Gain of disorder (P = 0.021);
MVP		1.0
MPC		2.5
ClinPred		0.99	D
GERP RS		4.8
Varity_R		0.82
gMVP		0.92
Mutation Taster		=82/18	polymorphism

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

Other links and lift over

dbSNP: rs398123024; hg19: chr8-21904110;