12-105144438-G-C

Variant names:

• chr12-105144438-G-C
• rs74426960
• NM_015275.3:c.2162G>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_015275.3(WASHC4):​c.2162G>C​(p.Arg721Pro) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,278 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. R721H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: WASHC4 NM_015275.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.88
• Publications: 0 publications found

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)

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.779

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WASHC4	NM_015275.3	c.2162G>C	p.Arg721Pro	missense_variant	Exon 21 of 33	ENST00000332180.10	NP_056090.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WASHC4	ENST00000332180.10	c.2162G>C	p.Arg721Pro	missense_variant	Exon 21 of 33	1	NM_015275.3	ENSP00000328062.6

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461278 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726950

African (AFR) AF: 0.00 AC: 0 AN: 33434

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.00 AC: 0 AN: 39648

South Asian (SAS) AF: 0.00 AC: 0 AN: 86240

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53404

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111576

Other (OTH) AF: 0.00 AC: 0 AN: 60374

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.94
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.10	T;T
Eigen	Uncertain	0.50
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.95	D;D
M_CAP	Benign	0.021	T
MetaRNN	Pathogenic	0.78	D;D
MetaSVM	Benign	-1.0	T
PhyloP100		6.9
PrimateAI	Pathogenic	0.80	T
PROVEAN	Benign	-2.2	N;.
REVEL	Uncertain	0.35
Sift	Benign	0.093	T;.
Sift4G	Benign	0.26	T;T
Polyphen		0.88	P;.
Vest4		0.94
MutPred		0.51		Gain of catalytic residue at R717 (P = 2e-04);.;
MVP		0.71
MPC		0.55
ClinPred		0.88	D
GERP RS		6.0
Varity_R		0.57
gMVP		0.93
Mutation Taster		=51/49	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs74426960; hg19: chr12-105538216;