2-219297249-G-A

Position:

chr2-219297249-G-A

Variant summary

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

The NM_002846.4(PTPRN):c.2072C>T(p.Thr691Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000539 in 1,614,040 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

PTPRN
NM_002846.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.33

Variant links:

Genes affected

PTPRN (HGNC:9676): (protein tyrosine phosphatase receptor type N) 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 a single catalytic domain, and thus represents a receptor-type PTP. This PTP was found to be an autoantigen that is reactive with insulin-dependent diabetes mellitus (IDDM) patient sera, and thus may be a potential target of autoimmunity in diabetes mellitus. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Dec 2010]

PTPRN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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	Protein
PTPRN	NM_002846.4 linkuse as main transcript	c.2072C>T	p.Thr691Met	missense_variant	14/23	ENST00000295718.7	NP_002837.1
PTPRN	NM_001199763.2 linkuse as main transcript	c.1985C>T	p.Thr662Met	missense_variant	13/22		NP_001186692.1
PTPRN	NM_001199764.2 linkuse as main transcript	c.1802C>T	p.Thr601Met	missense_variant	14/23		NP_001186693.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PTPRN	ENST00000295718.7 linkuse as main transcript	c.2072C>T	p.Thr691Met	missense_variant	14/23	1	NM_002846.4	ENSP00000295718	P1	Q16849-1
PTPRN	ENST00000409251.7 linkuse as main transcript	c.1985C>T	p.Thr662Met	missense_variant	13/22	1		ENSP00000386638		Q16849-2
PTPRN	ENST00000423636.6 linkuse as main transcript	c.1802C>T	p.Thr601Met	missense_variant	14/23	2		ENSP00000392598		Q16849-3
PTPRN	ENST00000462351.5 linkuse as main transcript	n.2546C>T		non_coding_transcript_exon_variant	12/20	2

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.000865

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000599

AC:

AN:

250602

Hom.:

AF XY:

0.0000591

AC XY:

AN XY:

135416

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.000698

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000354

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000499

AC:

AN:

1461678

Hom.:

Cov.:

AF XY:

0.0000468

AC XY:

AN XY:

727142

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.000919

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000279

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000919

AC:

AN:

152362

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74502

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.000865

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000158

Hom.:

Bravo

AF:

0.0000793

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 01, 2022

The c.2072C>T (p.T691M) alteration is located in exon 14 (coding exon 14) of the PTPRN gene. This alteration results from a C to T substitution at nucleotide position 2072, causing the threonine (T) at amino acid position 691 to be replaced by a methionine (M). 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

0.96

BayesDel_addAF

Uncertain

0.015

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.79

.;D;.

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

D;D;D

M_CAP

Benign

0.044

MetaRNN

Uncertain

0.49

T;T;T

MetaSVM

Benign

-0.81

MutationAssessor

Uncertain

2.8

.;M;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.83

PROVEAN

Pathogenic

-6.0

D;D;.

REVEL

Uncertain

0.49

Sift

Uncertain

0.013

D;D;.

Sift4G

Uncertain

0.060

T;T;T

Polyphen

1.0

.;D;.

Vest4

0.76

MutPred

0.35

.;Gain of helix (P = 0.0425);.;

MVP

0.63

MPC

1.3

ClinPred

0.94

GERP RS

4.3

Varity_R

0.54

gMVP

0.65

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over