rs531744802

Positions:

• chr2-174575327-C-G
• chr2-174575327-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001375834.1(WIPF1):​c.235G>C​(p.Gly79Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,658 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: WIPF1 NM_001375834.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.441

Genes affected

WIPF1 (HGNC:12736): (WAS/WASL interacting protein family member 1) This gene encodes a protein that plays an important role in the organization of the actin cytoskeleton. The encoded protein binds to a region of Wiskott-Aldrich syndrome protein that is frequently mutated in Wiskott-Aldrich syndrome, an X-linked recessive disorder. Impairment of the interaction between these two proteins may contribute to the disease. Two transcript variants encoding the same protein have been identified for this gene. [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14653069).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WIPF1	NM_001375834.1	c.235G>C	p.Gly79Arg	missense_variant	4/8	ENST00000679041.1	NP_001362763.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WIPF1	ENST00000679041.1	c.235G>C	p.Gly79Arg	missense_variant	4/8		NM_001375834.1	ENSP00000503603	P3
	ENST00000454203.1	n.101C>G		non_coding_transcript_exon_variant	1/2	3
	ENST00000442996.1	n.217+27850C>G		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000410 AC: 6 AN: 1461658 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727124

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Wiskott-Aldrich syndrome 2 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 08, 2019

This sequence change replaces glycine with arginine at codon 79 of the WIPF1 protein (p.Gly79Arg). The glycine residue is highly conserved and there is a moderate physicochemical difference between glycine and arginine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with WIPF1-related conditions. 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: "Benign"; Align-GVGD: "Class C0"). 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.58
BayesDel_addAF	Uncertain	0.089	D
BayesDel_noAF	Benign	-0.11
CADD	Benign	16
DANN	Benign	0.95
DEOGEN2	Benign	0.31	T;.;T;T;.;T;.;T;T
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.35
FATHMM_MKL	Benign	0.37	N
LIST_S2	Benign	0.67	.;T;.;T;T;T;T;D;T
M_CAP	Benign	0.054	D
MetaRNN	Benign	0.15	T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	0.15	D
MutationAssessor	Uncertain	2.4	M;M;M;M;M;.;.;.;.
MutationTaster	Benign	0.98	N;N;N;N;N;N;N
PrimateAI	Uncertain	0.49	T
PROVEAN	Benign	-1.6	N;N;N;N;N;N;N;N;D
REVEL	Uncertain	0.43
Sift	Benign	0.077	T;T;T;T;T;T;T;T;T
Sift4G	Uncertain	0.0070	D;D;D;D;D;D;.;T;.
Polyphen		0.99	D;D;D;D;D;D;.;.;.
Vest4		0.59
MutPred		0.37		Gain of methylation at G79 (P = 0.0031);Gain of methylation at G79 (P = 0.0031);Gain of methylation at G79 (P = 0.0031);Gain of methylation at G79 (P = 0.0031);Gain of methylation at G79 (P = 0.0031);Gain of methylation at G79 (P = 0.0031);.;Gain of methylation at G79 (P = 0.0031);Gain of methylation at G79 (P = 0.0031);
MVP		0.47
MPC		0.67
ClinPred		0.35	T
GERP RS		2.1
Varity_R		0.059
gMVP		0.35

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: rs531744802; hg19: chr2-175440055;