12-81277338-C-T

Position:

chr12-81277338-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_003625.5(PPFIA2):c.3289G>A(p.Ala1097Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000249 in 1,568,586 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

PPFIA2
NM_003625.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.44

Variant links:

Genes affected

PPFIA2 (HGNC:9246): (PTPRF interacting protein alpha 2) The protein encoded by this gene is a member of the LAR protein-tyrosine phosphatase-interacting protein (liprin) family. Liprins interact with members of LAR family of transmembrane protein tyrosine phosphatases, which are known to be important for axon guidance and mammary gland development. It has been proposed that liprins are multivalent proteins that form complex structures and act as scaffolds for the recruitment and anchoring of LAR family of tyrosine phosphatases. This protein has been shown to bind the calcium/calmodulin-dependent serine protein kinase (MAGUK family) protein (also known as CASK) and proposed to regulate higher-order brain functions in mammals. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

PPFIA2 links:

PPFIA2 (HGNC:):

PPFIA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.08425996).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PPFIA2	NM_003625.5 linkuse as main transcript	c.3289G>A	p.Ala1097Thr	missense_variant	28/33	ENST00000549396.6	NP_003616.2	O75334-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PPFIA2	ENST00000549396.6 linkuse as main transcript	c.3289G>A	p.Ala1097Thr	missense_variant	28/33	1	NM_003625.5	ENSP00000450337.1		O75334-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

151806

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000206

AC:

AN:

194436

Hom.:

AF XY:

0.00000958

AC XY:

AN XY:

104420

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 SAS exome

AF:

0.0000396

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000365

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000247

AC:

AN:

1416780

Hom.:

Cov.:

AF XY:

0.0000228

AC XY:

AN XY:

701466

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:

0.0000124

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000230

Gnomad4 OTH exome

AF:

0.0000855

GnomAD4 genome

AF:

0.0000263

AC:

AN:

151806

Hom.:

Cov.:

AF XY:

0.0000405

AC XY:

AN XY:

74134

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000589

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.00000841

AC:

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

Nov 25, 2024

The c.3289G>A (p.A1097T) alteration is located in exon 28 (coding exon 26) of the PPFIA2 gene. This alteration results from a G to A substitution at nucleotide position 3289, causing the alanine (A) at amino acid position 1097 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

0.060

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.031

.;.;T;.;.;.;T;.;.;.;.

Eigen

Benign

0.018

Eigen_PC

Benign

0.22

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.71

T;T;T;T;T;T;T;T;T;.;T

M_CAP

Benign

0.0018

MetaRNN

Benign

0.084

T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.85

.;.;L;.;.;.;.;.;.;.;.

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.60

N;.;N;N;N;N;.;N;N;N;N

REVEL

Benign

0.11

Sift

Benign

0.083

T;.;T;T;T;T;.;T;T;T;T

Sift4G

Benign

0.24

T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.0

.;.;B;.;.;.;.;.;.;.;.

Vest4

0.15

MutPred

0.20

.;.;Gain of phosphorylation at A1097 (P = 0.0168);Gain of phosphorylation at A1097 (P = 0.0168);.;.;.;.;.;.;.;

MVP

0.34

MPC

1.1

ClinPred

0.15

GERP RS

6.0

Varity_R

0.095

gMVP

0.075

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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