6-52236986-A-C

Position:

• chr6-52236986-A-C

Variant summary

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

The NM_052872.4(IL17F):​c.437T>G​(p.Val146Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: IL17F NM_052872.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.25

Genes affected

IL17F (HGNC:16404): (interleukin 17F) The protein encoded by this gene is a cytokine that shares sequence similarity with IL17. This cytokine is expressed by activated T cells, and has been shown to stimulate the production of several other cytokines, including IL6, IL8, and CSF2/GM_CSF. This cytokine is also found to inhibit the angiogenesis of endothelial cells and induce endothelial cells to produce IL2, TGFB1/TGFB, and monocyte chemoattractant protein-1. [provided by RefSeq, Jul 2008]

IL17F (HGNC:):

ACMG classification

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	Protein	UniProt
IL17F	NM_052872.4	c.437T>G	p.Val146Gly	missense_variant	3/3	ENST00000336123.5	NP_443104.1
IL17F	XM_011514276.1	c.437T>G	p.Val146Gly	missense_variant	4/4		XP_011512578.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IL17F	ENST00000336123.5	c.437T>G	p.Val146Gly	missense_variant	3/3	1	NM_052872.4	ENSP00000337432.4
IL17F	ENST00000478427.1	n.621T>G		non_coding_transcript_exon_variant	2/2	1
IL17F	ENST00000699946.1	c.437T>G	p.Val146Gly	missense_variant	4/4			ENSP00000514702.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Candidiasis, familial, 6 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 25, 2020

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C15"). This variant has not been reported in the literature in individuals with IL17F-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces valine with glycine at codon 146 of the IL17F protein (p.Val146Gly). The valine residue is weakly conserved and there is a moderate physicochemical difference between valine and glycine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.46
BayesDel_addAF	Benign	-0.046	T
BayesDel_noAF	Benign	-0.30
CADD	Uncertain	23
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.69	D
Eigen	Benign	0.093
Eigen_PC	Benign	0.016
FATHMM_MKL	Benign	0.075	N
LIST_S2	Benign	0.23	T
M_CAP	Benign	0.017	T
MetaRNN	Uncertain	0.44	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Uncertain	2.5	M
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.28	T
PROVEAN	Pathogenic	-4.4	D
REVEL	Uncertain	0.39
Sift	Uncertain	0.0080	D
Sift4G	Benign	0.068	T
Polyphen		0.85	P
Vest4		0.18
MutPred		0.65		Loss of stability (P = 9e-04);
MVP		0.82
MPC		0.53
ClinPred		0.98	D
GERP RS		5.7
Varity_R		0.89
gMVP		0.79

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

Other links and lift over

dbSNP: rs1763973005; hg19: chr6-52101784;