chr6-127998874-C-A

Position:

• chr6-127998874-C-A

Variant summary

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

The NM_002844.4(PTPRK):​c.2525G>T​(p.Ser842Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PTPRK NM_002844.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.74

Genes affected

PTPRK (HGNC:9674): (protein tyrosine phosphatase receptor type K) The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP possesses an extracellular region, a single transmembrane region, and two tandem catalytic domains, and thus represents a receptor-type PTP. The extracellular region contains a meprin-A5 antigen-PTP mu (MAM) domain, an Ig-like domain and four fibronectin type III-like repeats. This PTP was shown to mediate homophilic intercellular interaction, possibly through the interaction with beta- and gamma-catenin at adherens junctions. Expression of this gene was found to be stimulated by TGF-beta 1, which may be important for the inhibition of keratinocyte proliferation. [provided by RefSeq, Jul 2008]

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
PTPRK	NM_002844.4	c.2525G>T	p.Ser842Ile	missense_variant	16/30	ENST00000368226.9
PTPRK	NM_001291981.2	c.2573G>T	p.Ser858Ile	missense_variant	18/33
PTPRK	NM_001135648.3	c.2525G>T	p.Ser842Ile	missense_variant	16/31
PTPRK	NM_001291984.2	c.2522G>T	p.Ser841Ile	missense_variant	16/30

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTPRK	ENST00000368226.9	c.2525G>T	p.Ser842Ile	missense_variant	16/30	1	NM_002844.4	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 1428652 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 708322

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

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

Nov 18, 2023

The c.2525G>T (p.S842I) alteration is located in exon 16 (coding exon 16) of the PTPRK gene. This alteration results from a G to T substitution at nucleotide position 2525, causing the serine (S) at amino acid position 842 to be replaced by an isoleucine (I). 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	Uncertain	0.39
BayesDel_addAF	Uncertain	0.16	D
BayesDel_noAF	Uncertain	-0.010
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.092	.;.;.;T;T;.;T
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.97	D
M_CAP	Benign	0.026	D
MetaRNN	Uncertain	0.59	D;D;D;D;D;D;D
MetaSVM	Benign	-0.69	T
MutationAssessor	Uncertain	2.3	.;.;.;.;M;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Uncertain	0.70	T
PROVEAN	Uncertain	-3.3	D;D;D;D;D;D;D
REVEL	Benign	0.17
Sift	Uncertain	0.0010	D;D;D;D;D;D;D
Sift4G	Benign	0.098	T;D;T;D;T;D;.
Polyphen		0.69	P;.;D;.;P;.;.
Vest4		0.89
MutPred		0.32		.;.;.;.;Loss of disorder (P = 0.0041);.;.;
MVP		0.47
MPC		1.2
ClinPred		0.98	D
GERP RS		5.8
Varity_R		0.55
gMVP		0.75

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.31		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.31		Position offset: -12

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: chr6-128320019;