16-78099789-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_016373.4(WWOX):c.11T>G(p.Leu4Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000711 in 1,406,234 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. L4V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: WWOX NM_016373.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 7.16

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.793

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WWOX	NM_016373.4	c.11T>G	p.Leu4Arg	missense_variant	1/9	ENST00000566780.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WWOX	ENST00000566780.6	c.11T>G	p.Leu4Arg	missense_variant	1/9	1	NM_016373.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.11e-7 AC: 1 AN: 1406234 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 695308

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.21e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 04, 2024

The c.11T>G (p.L4R) alteration is located in exon 1 (coding exon 1) of the WWOX gene. This alteration results from a T to G substitution at nucleotide position 11, causing the leucine (L) at amino acid position 4 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Mar 18, 2022

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Benign	0.18	T;T;.;.;T;.;.;.
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.54
FATHMM_MKL	Benign	0.70	D
LIST_S2	Uncertain	0.94	D;D;D;D;D;D;D;D
M_CAP	Uncertain	0.26	D
MetaRNN	Pathogenic	0.79	D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.21	D
MutationAssessor	Benign	0.55	N;.;N;N;.;N;N;N
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.84	D
PROVEAN	Benign	-1.3	N;.;N;N;N;N;N;N
Sift	Pathogenic	0.0	D;.;D;D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D;D;D;D
Polyphen		1.0	D;.;D;D;.;D;D;.
Vest4		0.83
MutPred		0.31		Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);Gain of disorder (P = 0.0233);
MVP		0.96
ClinPred		0.99	D
GERP RS		5.1
Varity_R		0.70
gMVP		0.34

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr16-78133686;