chr15-77032539-A-C

Variant names:

• chr15-77032539-A-C
• rs4078354
• NM_003978.5:c.838+145A>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_003978.5(PSTPIP1):​c.838+145A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PSTPIP1 NM_003978.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.894
• Publications: 17 publications found

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 Gene-Disease associations (from GenCC):

• pyogenic arthritis-pyoderma gangrenosum-acne syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)
• autoinflammatory syndrome

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• recurrent infections-inflammatory syndrome due to zinc metabolism disorder syndrome

  Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003978.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSTPIP1	NM_003978.5	MANE Select	c.838+145A>C		intron	N/A	NP_003969.2
	PSTPIP1	NM_001321137.1		c.1033+145A>C		intron	N/A	NP_001308066.1
	PSTPIP1	NM_001411086.1		c.838+145A>C		intron	N/A	NP_001398015.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PSTPIP1	ENST00000558012.6	TSL:1 MANE Select	c.838+145A>C		intron	N/A	ENSP00000452746.1
	PSTPIP1	ENST00000559295.5	TSL:1	c.872+111A>C		intron	N/A	ENSP00000452743.1
	PSTPIP1	ENST00000558870.1	TSL:1	c.77+145A>C		intron	N/A	ENSP00000452779.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00 AC: 0 AN: 82188 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 674454 Hom.: 0 Cov.: 9 AF XY: 0.00 AC XY: 0 AN XY: 345108

African (AFR) AF: 0.00 AC: 0 AN: 16790

American (AMR) AF: 0.00 AC: 0 AN: 22758

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 16010

East Asian (EAS) AF: 0.00 AC: 0 AN: 32116

South Asian (SAS) AF: 0.00 AC: 0 AN: 53072

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35146

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4128

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 460854

Other (OTH) AF: 0.00 AC: 0 AN: 33580

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	4.4
DANN	Benign	0.62
PhyloP100		0.89
PromoterAI		0.024	Neutral

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

Other links and lift over

dbSNP: rs4078354; hg19: chr15-77324880;