Variant 10-96604043-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_152309.3(PIK3AP1):c.2177C>G(p.Thr726Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000313 in 1,599,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 31)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

PIK3AP1
NM_152309.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.67

Variant links:

Genes affected

PIK3AP1 (HGNC:30034): (phosphoinositide-3-kinase adaptor protein 1) Predicted to enable phosphatidylinositol 3-kinase regulatory subunit binding activity and signaling receptor binding activity. Predicted to be involved in regulation of inflammatory response; regulation of signal transduction; and toll-like receptor signaling pathway. Predicted to be located in cytoplasm and membrane. Predicted to be active in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

PIK3AP1 links:

PIK3AP1 (HGNC:):

PIK3AP1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.063010454).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PIK3AP1	NM_152309.3 linkuse as main transcript	c.2177C>G	p.Thr726Arg	missense_variant	15/17	ENST00000339364.10	NP_689522.2	Q6ZUJ8-1Q86YV3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PIK3AP1	ENST00000339364.10 linkuse as main transcript	c.2177C>G	p.Thr726Arg	missense_variant	15/17	1	NM_152309.3	ENSP00000339826.5		Q6ZUJ8-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152062

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.91e-7

AC:

AN:

1447500

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

719336

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.07e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152062

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74254

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000197

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Infantile spasms

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 07, 2024

This sequence change replaces threonine, which is neutral and polar, with arginine, which is basic and polar, at codon 726 of the PIK3AP1 protein (p.Thr726Arg). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PIK3AP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 578637). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

New York Genome Center

Mar 05, 2021

The inherited c.2177C>G (p.Thr726Arg) variant in exon 15 of 17 of PIK3AP1 has not been reported in affected individuals in the available literature. This variant is present in gnomAD at a low frequency (4/152062 heterozygotes, allele frequency =0.0000263, no homozygotes), suggesting it is not a common benign variant in the populations represented in this database. In silico predictors suggest this variant is Benign (REVEL; score: 0.024) and Tolerated (SIFT; score: 0.234). This variant was reported once in ClinVar database as a variant of uncertain significance (VarID:578637). Given the current evidence regarding its pathogenicity, the inherited c.2177C>G (p.Thr726Arg) variant identified in the PIK3AP1 gene is classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.62

CADD

Benign

9.8

DANN

Benign

0.54

DEOGEN2

Benign

0.15

T;.;.

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.67

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.79

T;T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.063

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

N;.;.

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.75

N;N;N

REVEL

Benign

0.024

Sift

Benign

0.27

T;T;T

Sift4G

Benign

0.40

T;T;T

Polyphen

0.14

B;.;P

Vest4

0.28

MutPred

0.22

Loss of phosphorylation at T726 (P = 0.0061);.;.;

MVP

0.17

MPC

0.69

ClinPred

0.10

GERP RS

3.1

Varity_R

0.030

gMVP

0.097

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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