Genetic Variant PPFIA2:p.Asp311Glu (chr12-81384074-A-C) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_003625.5(PPFIA2):c.933T>G(p.Asp311Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,461,000 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

PPFIA2
NM_003625.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.246

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

neurodevelopmental disorder
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

PPFIA2 links:

ENSG00000258162 (HGNC:58195):

ENSG00000258162 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.10531372).

BS2

High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPFIA2	NM_003625.5 link	c.933T>G	p.Asp311Glu	missense_variant	Exon 9 of 33	ENST00000549396.6	NP_003616.2	O75334-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPFIA2	ENST00000549396.6 link	c.933T>G	p.Asp311Glu	missense_variant	Exon 9 of 33	1	NM_003625.5	ENSP00000450337.1		O75334-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000402

AC:

AN:

248588

AF XY:

0.00

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:

0.00000887

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1461000

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726772

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33444

American (AMR)

AF:

0.00

AC:

AN:

44622

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39622

South Asian (SAS)

AF:

0.00

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53366

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111494

Other (OTH)

AF:

0.0000331

AC:

AN:

60346

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.00000828

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.67

CADD

Benign

(source)

DANN

Benign

0.78

DEOGEN2

Benign

0.069

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

Eigen

Benign

-0.76

Eigen_PC

Benign

-0.74

FATHMM_MKL

Benign

0.76

LIST_S2

Benign

0.85

D;D;D;D;D;D;D;.;D

M_CAP

Benign

0.0077

MetaRNN

Benign

0.11

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

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.13

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

PhyloP100

0.25

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.8

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

REVEL

Benign

0.18

Sift

Benign

0.80

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

Sift4G

Benign

1.0

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

Polyphen

0.0

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

Vest4

0.084

MutPred

0.15

.;Gain of methylation at K310 (P = 0.0902);Gain of methylation at K310 (P = 0.0902);.;.;.;Gain of methylation at K310 (P = 0.0902);.;Gain of methylation at K310 (P = 0.0902);

MVP

0.32

MPC

0.36

ClinPred

0.038

GERP RS

-5.7

Varity_R

0.087

gMVP

0.19

Mutation Taster

=82/18

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over