16-79211692-C-G

Variant names:

• chr16-79211692-C-G
• rs200461412
• NM_016373.4:c.1141C>G

Variant summary

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

The NM_016373.4(WWOX):​c.1141C>G​(p.Arg381Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R381H) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: WWOX NM_016373.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.29
• Publications: 9 publications found

Genes affected

WWOX (HGNC:12799): (WW domain containing oxidoreductase) This gene encodes a member of the short-chain dehydrogenases/reductases (SDR) protein family. This gene spans the FRA16D common chromosomal fragile site and appears to function as a tumor suppressor gene. Expression of the encoded protein is able to induce apoptosis, while defects in this gene are associated with multiple types of cancer. Disruption of this gene is also associated with autosomal recessive spinocerebellar ataxia 12. Disruption of a similar gene in mouse results in impaired steroidogenesis, additionally suggesting a metabolic function for the protein. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

ENSG00000261722 (HGNC:):

MAF (HGNC:6776): (MAF bZIP transcription factor) The protein encoded by this gene is a DNA-binding, leucine zipper-containing transcription factor that acts as a homodimer or as a heterodimer. Depending on the binding site and binding partner, the encoded protein can be a transcriptional activator or repressor. This protein plays a role in the regulation of several cellular processes, including embryonic lens fiber cell development, increased T-cell susceptibility to apoptosis, and chondrocyte terminal differentiation. Defects in this gene are a cause of juvenile-onset pulverulent cataract as well as congenital cerulean cataract 4 (CCA4). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2010]

MAF Gene-Disease associations (from GenCC):

• Ayme-Gripp syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• cataract 21 multiple types

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics
• cataract - microcornea syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• cerulean cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• pulverulent cataract

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Fine-Lubinsky syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016373.4. 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
	WWOX	NM_016373.4	MANE Select	c.1141C>G	p.Arg381Gly	missense	Exon 9 of 9	NP_057457.1
	WWOX	NM_001291997.2		c.802C>G	p.Arg268Gly	missense	Exon 8 of 8	NP_001278926.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WWOX	ENST00000566780.6	TSL:1 MANE Select	c.1141C>G	p.Arg381Gly	missense	Exon 9 of 9	ENSP00000457230.1
	WWOX	ENST00000402655.6	TSL:1	c.494C>G	p.Pro165Arg	missense	Exon 5 of 5	ENSP00000384238.2
	WWOX	ENST00000406884.6	TSL:1	c.601C>G	p.Arg201Gly	missense	Exon 6 of 6	ENSP00000384495.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 88

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

May 14, 2019

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Pathogenic	0.22
CADD	Uncertain	23
DANN	Uncertain	0.98
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.21	T
M_CAP	Uncertain	0.21	D
MetaRNN	Uncertain	0.53	D
MetaSVM	Benign	-0.43	T
PhyloP100		7.3
PROVEAN	Benign	0.22	N
REVEL	Benign	0.21
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.035	D
Polyphen		1.0	D
Vest4		0.45
MutPred		0.40		Gain of MoRF binding (P = 0.001)
MVP		0.86
ClinPred		0.96	D
GERP RS		5.7
Varity_R		0.38

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

Other links and lift over

dbSNP: rs200461412; hg19: chr16-79245589;