15-77037138-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_003978.5(PSTPIP1):c.1213C>T(p.Arg405Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000599 in 1,611,742 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00052 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00061 ( 1 hom. )

Consequence

PSTPIP1
NM_003978.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:3

Conservation

PhyloP100: 0.398

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.02797556).

BP6

Variant 15-77037138-C-T is Benign according to our data. Variant chr15-77037138-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 242307.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=3}.

BS2

High AC in GnomAd4 at 79 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PSTPIP1	NM_003978.5 link	c.1213C>T	p.Arg405Cys	missense_variant	Exon 15 of 15	ENST00000558012.6	NP_003969.2	O43586-1A0A0S2Z5P3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PSTPIP1	ENST00000558012.6 link	c.1213C>T	p.Arg405Cys	missense_variant	Exon 15 of 15	1	NM_003978.5	ENSP00000452746.1		O43586-1

Frequencies

GnomAD3 genomes

AF:

0.000513

AC:

AN:

152100

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000459

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000691

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000568

AC:

140

AN:

246402

Hom.:

AF XY:

0.000581

AC XY:

AN XY:

134350

show subpopulations

Gnomad AFR exome

AF:

0.000527

Gnomad AMR exome

AF:

0.00128

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000328

Gnomad FIN exome

AF:

0.0000941

Gnomad NFE exome

AF:

0.000611

Gnomad OTH exome

AF:

0.00134

GnomAD4 exome

AF:

0.000608

AC:

887

AN:

1459524

Hom.:

Cov.:

AF XY:

0.000558

AC XY:

405

AN XY:

726006

show subpopulations

Gnomad4 AFR exome

AF:

0.000269

Gnomad4 AMR exome

AF:

0.00159

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.000186

Gnomad4 FIN exome

AF:

0.000135

Gnomad4 NFE exome

AF:

0.000676

Gnomad4 OTH exome

AF:

0.000464

GnomAD4 genome

AF:

0.000519

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.000484

AC XY:

AN XY:

74416

show subpopulations

Gnomad4 AFR

AF:

0.000482

Gnomad4 AMR

AF:

0.000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000691

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000725

Hom.:

Bravo

AF:

0.000642

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.00156

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000597

AC:

ExAC

AF:

0.000425

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000436

EpiControl

AF:

0.000712

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Pyogenic arthritis-pyoderma gangrenosum-acne syndrome

Uncertain:1Benign:2

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Oct 29, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The PSTPIP1 c.1213C>T; p.Arg405Cys variant (rs201253322, ClinVar variation ID: 242307), is reported in the literature in at least one individual affected with pyoderma gangrenosum, acne and suppurative hidradenitis (PASH) syndrome (Calderon-Castrat 2016), and in multiple individuals affected with pyogenic sterile arthritis, pyoderma gangrenosum, and acne (PAPA) syndrome (Starnes 2014, Stone 2022). This variant has also been reported in an individual with an autoinflammatory syndrome, hemophagocytic lymphohistiocytosis (Gowin 2021) and in an individual with hidradenitis suppurativa (Morales-Heil 2023). It is observed in the general population with an overall allele frequency of 0.057% (158/277726 alleles) in the Genome Aggregation Database (v2.1.1). Computational analyses predict that this variant is neutral (REVEL: 0.056). However, functional analyses of the variant protein show reduced binding of PSTPIP1 to WASp (Starnes 2014, Morales-Heil 2023). Due to conflicting information, the clinical significance of the p.Arg405Cys variant is uncertain at this time. References: Calderon-Castrat X et al. PSTPIP1 gene mutation in a pyoderma gangrenosum, acne and suppurative hidradenitis (PASH) syndrome. Br J Dermatol. 2016 Jul;175(1):194-8. PMID: 26713508 Gowin E et al. Mutation in the proline-serine-threonine phosphatase-interacting protein 1 (PSTPIP1) gene in a patient with acute lymphoblastic leukemia. Cent Eur J Immunol. 2021;46(2):270-274. PMID: 34764798. Morales-Heil DJ et al. Rare missense variants in the SH3 domain of PSTPIP1 are associated with hidradenitis suppurativa. HGG Adv. 2023 Mar 13;4(2):100187. PMID: 37013170. Starnes TW et al. The F-BAR protein PSTPIP1 controls extracellular matrix degradation and filopodia formation in macrophages. Blood. 2014 Apr 24;123(17):2703-14. PMID: 24421327 Stone DL et al. Excess Serum Interleukin-18 Distinguishes Patients With Pathogenic Mutations in PSTPIP1. Arthritis Rheumatol. 2022 Feb;74(2):353-357. PMID: 34492165. -

Jan 27, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Feb 17, 2022

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Published functional studies demonstrate that R405C may alter the interaction of PSTPIP1 with cytoskeleton and cell migration regulators (Starnes et al., 2014); In silico analysis supports that this missense variant does not alter protein structure/function; This substitution does not occur in the coiled-coil domain region, the region where definitive PAPA-associated variants have been identified to date.; This variant is associated with the following publications: (PMID: 24764557, 27106250, 26713508, 30619323, 24421327, 32909274, 34764798, 32942279) -

Autoinflammatory syndrome

Uncertain:1

Apr 19, 2022

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

PSTPIP1-related disorder

Benign:1

Nov 03, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.20

T;.;.

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.29

FATHMM_MKL

Benign

0.15

LIST_S2

Uncertain

0.90

D;D;D

M_CAP

Benign

0.032

MetaRNN

Benign

0.028

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;.;.

PrimateAI

Benign

0.45

PROVEAN

Benign

-1.7

N;N;N

REVEL

Benign

0.056

Sift

Benign

0.13

T;T;T

Sift4G

Benign

0.068

T;T;T

Polyphen

0.28

B;.;B

Vest4

0.36

MVP

0.55

MPC

0.21

ClinPred

0.014

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.18

gMVP

0.60

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

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