Genetic Variant PSTPIP2:p.Ser187Leu (chr18-45998796-G-A) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_024430.4(PSTPIP2):c.560C>T(p.Ser187Leu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000342 in 1,461,238 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

PSTPIP2
NM_024430.4 missense, splice_region

Scores

Splicing: ADA: 0.9803

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.00

Publications

0 publications found

Variant links:

Genes affected

PSTPIP2 (HGNC:9581): (proline-serine-threonine phosphatase interacting protein 2) Predicted to enable actin filament binding activity. Predicted to be involved in actin filament polymerization. Predicted to be located in cytoskeleton and membrane. Predicted to be active in actin filament; cytoplasm; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

PSTPIP2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PSTPIP2	NM_024430.4 link	c.560C>T	p.Ser187Leu	missense_variant, splice_region_variant	Exon 8 of 15	ENST00000409746.5	NP_077748.3	Q9H939-1A0A0S2Z4R2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PSTPIP2	ENST00000409746.5 link	c.560C>T	p.Ser187Leu	missense_variant, splice_region_variant	Exon 8 of 15	1	NM_024430.4	ENSP00000387261.4	Q9H939-1
PSTPIP2	ENST00000589328.5 link	c.560C>T	p.Ser187Leu	missense_variant, splice_region_variant	Exon 8 of 14	1		ENSP00000468622.1	Q9H939-2
PSTPIP2	ENST00000588801.5 link	n.655C>T		splice_region_variant, non_coding_transcript_exon_variant	Exon 8 of 9	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000797

AC:

AN:

251018

AF XY:

0.0000147

show subpopulations

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

AF:

0.00000342

AC:

AN:

1461238

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726892

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33450

American (AMR)

AF:

0.0000224

AC:

AN:

44688

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26118

East Asian (EAS)

AF:

0.00

AC:

AN:

39652

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86220

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53340

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111630

Other (OTH)

AF:

0.00

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 25, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.560C>T (p.S187L) alteration is located in exon 8 (coding exon 8) of the PSTPIP2 gene. This alteration results from a C to T substitution at nucleotide position 560, causing the serine (S) at amino acid position 187 to be replaced by a leucine (L). 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

0.13

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.28

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.44

.;T

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.86

D;D

M_CAP

Benign

0.018

MetaRNN

Benign

0.32

T;T

MetaSVM

Benign

-0.82

MutationAssessor

Uncertain

2.6

M;M

PhyloP100

6.0

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-2.4

.;N

REVEL

Benign

0.15

Sift

Uncertain

0.0030

.;D

Sift4G

Uncertain

0.020

D;D

Polyphen

0.90

P;P

Vest4

0.44

MutPred

0.39

Loss of disorder (P = 0.0272);Loss of disorder (P = 0.0272);

MVP

0.62

MPC

0.35

ClinPred

0.85

GERP RS

5.4

Varity_R

0.20

gMVP

0.63

Mutation Taster

=61/39

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.98

dbscSNV1_RF

Pathogenic

0.77

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over