rs771232034

Positions:

chr15-77030523-T-C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_003978.5(PSTPIP1):c.584T>C(p.Ile195Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00021 in 1,612,400 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00023 ( 0 hom. )

Consequence

PSTPIP1
NM_003978.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 3.18

Variant links:

Genes affected

PSTPIP1 (HGNC:9580): (proline-serine-threonine phosphatase interacting protein 1) This gene encodes a cytoskeletal protein that is highly expressed in hemopoietic tissues. This protein functions via its interaction with several different proteins involved in cytoskeletal organization and inflammatory processes. It binds to the cytoplasmic tail of CD2, an effector of T cell activation and adhesion, downregulating CD2-triggered adhesion. It binds PEST-type protein tyrosine phosphatases (PTP) and directs them to c-Abl kinase to mediate c-Abl dephosphorylation, thereby, regulating c-Abl activity. It also interacts with pyrin, which is found in association with the cytoskeleton in myeloid/monocytic cells and modulates immunoregulatory functions. Mutations in this gene are associated with PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. It is hypothesized that the disease-causing mutations compromise physiologic signaling necessary for the maintenance of a proper inflammatory response. [provided by RefSeq, Mar 2016]

PSTPIP1 links:

PSTPIP1 (HGNC:):

PSTPIP1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.16147226).

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PSTPIP1	NM_003978.5 linkuse as main transcript	c.584T>C	p.Ile195Thr	missense_variant	9/15	ENST00000558012.6	NP_003969.2	O43586-1A0A0S2Z5P3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PSTPIP1	ENST00000558012.6 linkuse as main transcript	c.584T>C	p.Ile195Thr	missense_variant	9/15	1	NM_003978.5	ENSP00000452746.1		O43586-1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000648

AC:

AN:

246972

Hom.:

AF XY:

0.0000668

AC XY:

AN XY:

134630

show subpopulations

Gnomad AFR exome

AF:

0.0000656

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000134

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000226

AC:

330

AN:

1460238

Hom.:

Cov.:

AF XY:

0.000227

AC XY:

165

AN XY:

726350

show subpopulations

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:

0.0000116

Gnomad4 FIN exome

AF:

0.0000381

Gnomad4 NFE exome

AF:

0.000285

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.0000453

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000746

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Pyogenic arthritis-pyoderma gangrenosum-acne syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Mar 16, 2020	The PSTPIP1 c.584T>C; p.Ile195Thr variant (rs771232034), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 582444). This variant is found in the non-Finnish European population with an allele frequency of 0.013% (15/111560 alleles) in the Genome Aggregation Database. The isoleucine at codon 195 is moderately conserved, and computational analyses (SIFT: damaging, PolyPhen-2: benign) predict conflicting effects of this variant on protein structure/function. Due to limited information, the clinical significance of the p.Ile195Thr variant is uncertain at this time. -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 13, 2023	This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 195 of the PSTPIP1 protein (p.Ile195Thr). This variant is present in population databases (rs771232034, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with PSTPIP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 582444). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt PSTPIP1 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 21, 2024

The c.584T>C (p.I195T) alteration is located in exon 9 (coding exon 9) of the PSTPIP1 gene. This alteration results from a T to C substitution at nucleotide position 584, causing the isoleucine (I) at amino acid position 195 to be replaced by a threonine (T). 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

0.11

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Benign

0.90

DEOGEN2

Uncertain

0.48

T;.;.;.;T

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.49

FATHMM_MKL

Benign

0.55

LIST_S2

Benign

0.76

T;T;T;T;T

M_CAP

Benign

0.016

MetaRNN

Benign

0.16

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.9

L;.;.;L;.

PrimateAI

Benign

0.36

PROVEAN

Uncertain

-3.8

D;D;D;D;D

REVEL

Benign

0.11

Sift

Benign

0.038

D;D;D;D;D

Sift4G

Benign

0.063

T;T;T;T;T

Polyphen

0.0

B;.;.;B;.

Vest4

0.55

MutPred

0.51

Gain of phosphorylation at I195 (P = 0.0283);Gain of phosphorylation at I195 (P = 0.0283);.;Gain of phosphorylation at I195 (P = 0.0283);.;

MVP

0.67

MPC

0.19

ClinPred

0.076

GERP RS

2.5

Varity_R

0.098

gMVP

0.28

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