16-78136263-C-G

Variant names:

• chr16-78136263-C-G
• rs1074963
• NM_016373.4:c.409+21109C>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_016373.4(WWOX):​c.409+21109C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.651 in 152,142 control chromosomes in the GnomAD database, including 32,626 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.65 (32626 hom., cov: 33)
• Consequence: WWOX NM_016373.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.11
• Publications: 7 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]

WWOX Gene-Disease associations (from GenCC):

• genetic developmental and epileptic encephalopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• autosomal recessive spinocerebellar ataxia 12

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
• developmental and epileptic encephalopathy, 28

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• 46,XY partial gonadal dysgenesis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• undetermined early-onset epileptic encephalopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.54).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.741 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WWOX	NM_016373.4	c.409+21109C>G		intron_variant	Intron 4 of 8	ENST00000566780.6	NP_057457.1
WWOX	NM_001291997.2	c.70+21109C>G		intron_variant	Intron 3 of 7		NP_001278926.1
WWOX	NM_130791.5	c.409+21109C>G		intron_variant	Intron 4 of 5		NP_570607.1
WWOX	NR_120436.3	n.648+21109C>G		intron_variant	Intron 4 of 5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WWOX	ENST00000566780.6	c.409+21109C>G		intron_variant	Intron 4 of 8	1	NM_016373.4	ENSP00000457230.1

Frequencies

GnomAD3 genomes AF: 0.650 AC: 98887 AN: 152024 Hom.: 32583 Cov.: 33

Gnomad AFR AF: 0.748

Gnomad AMI AF: 0.559

Gnomad AMR AF: 0.631

Gnomad ASJ AF: 0.565

Gnomad EAS AF: 0.752

Gnomad SAS AF: 0.570

Gnomad FIN AF: 0.615

Gnomad MID AF: 0.509

Gnomad NFE AF: 0.606

Gnomad OTH AF: 0.634

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.651 AC: 98990 AN: 152142 Hom.: 32626 Cov.: 33 AF XY: 0.648 AC XY: 48233 AN XY: 74388

African (AFR) AF: 0.748 AC: 31052 AN: 41506

American (AMR) AF: 0.631 AC: 9643 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.565 AC: 1962 AN: 3470

East Asian (EAS) AF: 0.752 AC: 3893 AN: 5176

South Asian (SAS) AF: 0.570 AC: 2747 AN: 4820

European-Finnish (FIN) AF: 0.615 AC: 6514 AN: 10592

Middle Eastern (MID) AF: 0.514 AC: 151 AN: 294

European-Non Finnish (NFE) AF: 0.606 AC: 41180 AN: 67978

Other (OTH) AF: 0.634 AC: 1340 AN: 2112

Alfa AF: 0.634 Hom.: 3797

Bravo AF: 0.656

Asia WGS AF: 0.647 AC: 2251 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.54
CADD	Benign	12
DANN	Benign	0.61
PhyloP100		2.1
Mutation Taster		=100/0	polymorphism (auto)

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: rs1074963; hg19: chr16-78170160;