Variant 1-176594547-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_020318.3(PAPPA2):c.943A>G(p.Thr315Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000183 in 1,613,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

PAPPA2
NM_020318.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.119

Variant links:

Genes affected

PAPPA2 (HGNC:14615): (pappalysin 2) This gene encodes a member of the pappalysin family of metzincin metalloproteinases. The encoded protein cleaves insulin-like growth factor-binding protein 5 and is thought to be a local regulator of insulin-like growth factor (IGF) bioavailability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2010]

PAPPA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.027203709).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000197 (30/152144) while in subpopulation NFE AF= 0.000309 (21/68002). AF 95% confidence interval is 0.000207. There are 0 homozygotes in gnomad4. There are 17 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PAPPA2	NM_020318.3 linkuse as main transcript	c.943A>G	p.Thr315Ala	missense_variant	3/23	ENST00000367662.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PAPPA2	ENST00000367662.5 linkuse as main transcript	c.943A>G	p.Thr315Ala	missense_variant	3/23	1	NM_020318.3	P1	Q9BXP8-1
PAPPA2	ENST00000367661.7 linkuse as main transcript	c.943A>G	p.Thr315Ala	missense_variant	3/5	1			Q9BXP8-2

Frequencies

GnomAD3 genomes

AF:

0.000197

AC:

AN:

152026

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.000756

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000309

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000205

AC:

AN:

248602

Hom.:

AF XY:

0.000215

AC XY:

AN XY:

134868

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:

0.0000654

Gnomad FIN exome

AF:

0.000325

Gnomad NFE exome

AF:

0.000364

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000182

AC:

266

AN:

1461746

Hom.:

Cov.:

AF XY:

0.000184

AC XY:

134

AN XY:

727170

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:

0.000104

Gnomad4 FIN exome

AF:

0.000131

Gnomad4 NFE exome

AF:

0.000219

Gnomad4 OTH exome

AF:

0.0000994

GnomAD4 genome

AF:

0.000197

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000756

Gnomad4 NFE

AF:

0.000309

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000697

Hom.:

Bravo

AF:

0.000121

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000242

AC:

ExAC

AF:

0.000157

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 06, 2021

The c.943A>G (p.T315A) alteration is located in exon 3 (coding exon 2) of the PAPPA2 gene. This alteration results from a A to G substitution at nucleotide position 943, causing the threonine (T) at amino acid position 315 to be replaced by an alanine (A). 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

0.067

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.59

CADD

Benign

DANN

Benign

0.89

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.59

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.52

T;T

M_CAP

Benign

0.0093

MetaRNN

Benign

0.027

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.84

L;L

MutationTaster

Benign

0.94

N;N

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.74

N;N

REVEL

Benign

0.052

Sift

Benign

0.34

T;T

Sift4G

Benign

0.72

T;T

Polyphen

0.0020

.;B

Vest4

0.13

MVP

0.55

MPC

0.17

ClinPred

0.017

GERP RS

1.6

Varity_R

0.039

gMVP

0.51

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