NM_000377.3:c.538C>T

Variant names:

• chrX-48686113-C-T
• rs145040665
• NM_000377.3:c.538C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000377.3(WAS):​c.538C>T​(p.His180Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000887 in 112,713 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H180N) has been classified as Likely benign.

• Frequency: Genomes: 𝑓 0.0000089 (0 hom., 1 hem., cov: 23)
• Consequence: WAS NM_000377.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.44
• Publications: 5 publications found

Genes affected

WAS (HGNC:12731): (WASP actin nucleation promoting factor) The Wiskott-Aldrich syndrome (WAS) family of proteins share similar domain structure, and are involved in transduction of signals from receptors on the cell surface to the actin cytoskeleton. The presence of a number of different motifs suggests that they are regulated by a number of different stimuli, and interact with multiple proteins. Recent studies have demonstrated that these proteins, directly or indirectly, associate with the small GTPase, Cdc42, known to regulate formation of actin filaments, and the cytoskeletal organizing complex, Arp2/3. Wiskott-Aldrich syndrome is a rare, inherited, X-linked, recessive disease characterized by immune dysregulation and microthrombocytopenia, and is caused by mutations in the WAS gene. The WAS gene product is a cytoplasmic protein, expressed exclusively in hematopoietic cells, which show signalling and cytoskeletal abnormalities in WAS patients. A transcript variant arising as a result of alternative promoter usage, and containing a different 5' UTR sequence, has been described, however, its full-length nature is not known. [provided by RefSeq, Jul 2008]

WAS Gene-Disease associations (from GenCC):

• Wiskott-Aldrich syndrome

  Inheritance: XL, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
• X-linked severe congenital neutropenia

  Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
• thrombocytopenia 1

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000232828 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.22671112).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000377.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WAS	NM_000377.3	MANE Select	c.538C>T	p.His180Tyr	missense	Exon 6 of 12	NP_000368.1
	WAS	NM_001438877.1		c.538C>T	p.His180Tyr	missense	Exon 6 of 12	NP_001425806.1
	WAS	NM_001438878.1		c.538C>T	p.His180Tyr	missense	Exon 6 of 12	NP_001425807.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WAS	ENST00000376701.5	TSL:1 MANE Select	c.538C>T	p.His180Tyr	missense	Exon 6 of 12	ENSP00000365891.4
	WAS	ENST00000698635.1		c.538C>T	p.His180Tyr	missense	Exon 6 of 12	ENSP00000513850.1
	WAS	ENST00000698626.1		c.538C>T	p.His180Tyr	missense	Exon 6 of 13	ENSP00000513845.1

Frequencies

GnomAD3 genomes AF: 0.00000887 AC: 1 AN: 112713 Hom.: 0 Cov.: 23

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000188

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 33

GnomAD4 genome AF: 0.00000887 AC: 1 AN: 112713 Hom.: 0 Cov.: 23 AF XY: 0.0000287 AC XY: 1 AN XY: 34855

African (AFR) AF: 0.00 AC: 0 AN: 31006

American (AMR) AF: 0.00 AC: 0 AN: 10660

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2658

East Asian (EAS) AF: 0.00 AC: 0 AN: 3617

South Asian (SAS) AF: 0.00 AC: 0 AN: 2807

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 6216

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 240

European-Non Finnish (NFE) AF: 0.0000188 AC: 1 AN: 53310

Other (OTH) AF: 0.00 AC: 0 AN: 1514

Alfa AF: 0.00 Hom.: 77

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.078
BayesDel_addAF	Uncertain	0.083	D
BayesDel_noAF	Benign	-0.12
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0078	T
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.74	T
M_CAP	Pathogenic	0.70	D
MetaRNN	Benign	0.23	T
MetaSVM	Pathogenic	0.97	D
MutationAssessor	Benign	1.8	L
PhyloP100		1.4
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-0.47	N
REVEL	Uncertain	0.42
Sift	Benign	0.11	T
Sift4G	Benign	1.0	T
Polyphen		0.48	P
Vest4		0.20
MutPred		0.18		Gain of phosphorylation at H180 (P = 0.0279)
MVP		0.79
MPC		1.0
ClinPred		0.26	T
GERP RS		4.3
Varity_R		0.18
gMVP		0.47
Mutation Taster		=94/6	polymorphism

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

Other links and lift over

dbSNP: rs145040665; hg19: chrX-48544502; COSMIC: COSV64997835; COSMIC: COSV64997835;