Genetic Variant NM_015275.3:c.3056C>A (chr12-105160144-C-A) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP3_Moderate

The NM_015275.3(WASHC4):c.3056C>A(p.Pro1019His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,920 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. P1019R) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

WASHC4
NM_015275.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.74

Publications

0 publications found

Variant links:

Genes affected

WASHC4 (HGNC:29174): (WASH complex subunit 4) This gene encodes a component of the WASH complex, which functions in the intracellular transport of endosomes. Mutations in this gene have been detected in individuals with autosomal recessive cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

WASHC4 Gene-Disease associations (from GenCC):

autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
intellectual disability, autosomal recessive 43
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
schizophrenia
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

WASHC4 links:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr12-105160144-C-G is described in ClinVar as Pathogenic. ClinVar VariationId is 133296.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.877

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015275.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WASHC4	NM_015275.3	MANE Select	c.3056C>A	p.Pro1019His	missense	Exon 29 of 33	NP_056090.1
	WASHC4	NM_001293640.2		c.3059C>A	p.Pro1020His	missense	Exon 29 of 33	NP_001280569.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
WASHC4	ENST00000332180.10	TSL:1 MANE Select	c.3056C>A	p.Pro1019His	missense	Exon 29 of 33	ENSP00000328062.6
WASHC4	ENST00000620430.5	TSL:1	c.3059C>A	p.Pro1020His	missense	Exon 29 of 33	ENSP00000484713.1
WASHC4	ENST00000551224.1	TSL:2	c.290C>A	p.Pro97His	missense	Exon 3 of 4	ENSP00000447015.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1460920

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726838

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86208

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53350

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111260

Other (OTH)

AF:

0.00

AC:

AN:

60366

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.38

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.73

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.78

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.97

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.88

MetaSVM

Uncertain

0.51

PhyloP100

7.7

PrimateAI

Pathogenic

0.86

PROVEAN

Pathogenic

-6.7

REVEL

Pathogenic

0.90

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

1.0

Vest4

0.95

MutPred

0.60

Gain of catalytic residue at T1021 (P = 0)

MVP

0.89

MPC

0.77

ClinPred

1.0

GERP RS

4.8

Varity_R

0.78

gMVP

0.71

Mutation Taster

=31/69

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over