chr6-159748284-A-G

Position:

• chr6-159748284-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001270531.2(WTAP):​c.367A>G​(p.Lys123Glu) 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. K123N) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: WTAP NM_001270531.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.27

Genes affected

WTAP (HGNC:16846): (WT1 associated protein) The Wilms tumor suppressor gene WT1 appears to play a role in both transcriptional and posttranscriptional regulation of certain cellular genes. This gene encodes a WT1-associating protein, which is a ubiquitously expressed nuclear protein. Like WT1 protein, this protein is localized throughout the nucleoplasm as well as in speckles and partially colocalizes with splicing factors. Alternative splicing of this gene results in several transcript variants encoding three different isoforms. [provided by RefSeq, Jul 2012]

SOD2 (HGNC:11180): (superoxide dismutase 2) This gene is a member of the iron/manganese superoxide dismutase family. It encodes a mitochondrial protein that forms a homotetramer and binds one manganese ion per subunit. This protein binds to the superoxide byproducts of oxidative phosphorylation and converts them to hydrogen peroxide and diatomic oxygen. Mutations in this gene have been associated with idiopathic cardiomyopathy (IDC), premature aging, sporadic motor neuron disease, and cancer. Alternative splicing of this gene results in multiple transcript variants. A related pseudogene has been identified on chromosome 1. [provided by RefSeq, Apr 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WTAP	NM_001270531.2	c.367A>G	p.Lys123Glu	missense_variant	6/8	ENST00000621533.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WTAP	ENST00000621533.5	c.367A>G	p.Lys123Glu	missense_variant	6/8	2	NM_001270531.2	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 09, 2024

The c.367A>G (p.K123E) alteration is located in exon 6 (coding exon 5) of the WTAP gene. This alteration results from a A to G substitution at nucleotide position 367, causing the lysine (K) at amino acid position 123 to be replaced by a glutamic acid (E). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.83
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T;T;T;T;.
Eigen	Uncertain	0.66
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.86	.;D;D;.;D
M_CAP	Benign	0.029	D
MetaRNN	Uncertain	0.58	D;D;D;D;D
MetaSVM	Benign	-0.77	T
MutationAssessor	Benign	1.6	L;.;L;.;L
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-2.8	D;.;.;.;D
REVEL	Uncertain	0.36
Sift	Uncertain	0.010	D;.;.;.;D
Sift4G	Uncertain	0.014	D;D;D;D;D
Polyphen		0.99	D;.;D;.;.
Vest4		0.79
MutPred		0.16		Loss of ubiquitination at K123 (P = 0.0233);Loss of ubiquitination at K123 (P = 0.0233);Loss of ubiquitination at K123 (P = 0.0233);Loss of ubiquitination at K123 (P = 0.0233);Loss of ubiquitination at K123 (P = 0.0233);
MVP		0.52
MPC		2.6
ClinPred		0.93	D
GERP RS		5.8
Varity_R		0.66
gMVP		0.79

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1779695584; hg19: chr6-160169316;