3-58424821-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_017771.5(PXK):c.1598C>A(p.Thr533Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,874 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PXK NM_017771.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.91

Genes affected

PXK (HGNC:23326): (PX domain containing serine/threonine kinase like) This gene encodes a phox (PX) domain-containing protein which may be involved in synaptic transmission and the ligand-induced internalization and degradation of epidermal growth factors. Variations in this gene may be associated with susceptibility to systemic lupus erythematosus (SLE). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09873772).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PXK	NM_017771.5	c.1598C>A	p.Thr533Asn	missense_variant	18/18	ENST00000356151.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PXK	ENST00000356151.7	c.1598C>A	p.Thr533Asn	missense_variant	18/18	1	NM_017771.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461874 Hom.: 0 Cov.: 37 AF XY: 0.00000138 AC XY: 1 AN XY: 727232

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

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

Jan 08, 2024

The c.1598C>A (p.T533N) alteration is located in exon 18 (coding exon 18) of the PXK gene. This alteration results from a C to A substitution at nucleotide position 1598, causing the threonine (T) at amino acid position 533 to be replaced by an asparagine (N). 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	Benign	0.087
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.55
Cadd	Benign	16
Dann	Benign	0.97
DEOGEN2	Benign	0.0094	T
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.13
FATHMM_MKL	Benign	0.36	N
LIST_S2	Benign	0.39	T
M_CAP	Benign	0.0038	T
MetaRNN	Benign	0.099	T
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	D;N;N;N;N;N
PROVEAN	Benign	0.37	N
REVEL	Benign	0.088
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.14	T
Vest4		0.14
MutPred		0.18		Gain of solvent accessibility (P = 0.0021);
MVP		0.27
ClinPred		0.84	D
GERP RS		5.0

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

LitVar

Other links and lift over

dbSNP: rs2062602283; hg19: chr3-58410548;