chr16-78876099-A-G

Variant names:

• chr16-78876099-A-G
• rs1079638
• NM_016373.4:c.1057-335509A>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.1057-335509A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.286 in 152,026 control chromosomes in the GnomAD database, including 6,465 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 0.29 (6465 hom., cov: 32)
• Consequence: WWOX NM_016373.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.420
• Publications: 3 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=-0.83).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.362 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WWOX	NM_016373.4	c.1057-335509A>G		intron_variant	Intron 8 of 8	ENST00000566780.6	NP_057457.1
WWOX	NM_001291997.2	c.718-335509A>G		intron_variant	Intron 7 of 7		NP_001278926.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WWOX	ENST00000566780.6	c.1057-335509A>G		intron_variant	Intron 8 of 8	1	NM_016373.4	ENSP00000457230.1

Frequencies

GnomAD3 genomes AF: 0.286 AC: 43486 AN: 151908 Hom.: 6458 Cov.: 32

Gnomad AFR AF: 0.236

Gnomad AMI AF: 0.250

Gnomad AMR AF: 0.367

Gnomad ASJ AF: 0.388

Gnomad EAS AF: 0.240

Gnomad SAS AF: 0.375

Gnomad FIN AF: 0.219

Gnomad MID AF: 0.421

Gnomad NFE AF: 0.300

Gnomad OTH AF: 0.317

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

GnomAD4 genome AF: 0.286 AC: 43512 AN: 152026 Hom.: 6465 Cov.: 32 AF XY: 0.286 AC XY: 21221 AN XY: 74302

African (AFR) AF: 0.236 AC: 9796 AN: 41454

American (AMR) AF: 0.367 AC: 5604 AN: 15268

Ashkenazi Jewish (ASJ) AF: 0.388 AC: 1348 AN: 3470

East Asian (EAS) AF: 0.240 AC: 1239 AN: 5172

South Asian (SAS) AF: 0.376 AC: 1810 AN: 4812

European-Finnish (FIN) AF: 0.219 AC: 2312 AN: 10554

Middle Eastern (MID) AF: 0.439 AC: 129 AN: 294

European-Non Finnish (NFE) AF: 0.300 AC: 20385 AN: 67982

Other (OTH) AF: 0.314 AC: 661 AN: 2108

Alfa AF: 0.292 Hom.: 1050

Bravo AF: 0.298

Asia WGS AF: 0.290 AC: 1014 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.85
DANN	Benign	0.62
PhyloP100		-0.42
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: rs1079638; hg19: chr16-78909996;