Variant 5-68293098-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_ModerateBP6BS1

The NM_181523.3(PIK3R1):c.1020-3C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000278 in 1,606,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00028 ( 0 hom. )

Consequence

PIK3R1
NM_181523.3 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.001875

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 1.63

Variant links:

Genes affected

PIK3R1 (HGNC:8979): (phosphoinositide-3-kinase regulatory subunit 1) Phosphatidylinositol 3-kinase phosphorylates the inositol ring of phosphatidylinositol at the 3-prime position. The enzyme comprises a 110 kD catalytic subunit and a regulatory subunit of either 85, 55, or 50 kD. This gene encodes the 85 kD regulatory subunit. Phosphatidylinositol 3-kinase plays an important role in the metabolic actions of insulin, and a mutation in this gene has been associated with insulin resistance. Alternative splicing of this gene results in four transcript variants encoding different isoforms. [provided by RefSeq, Jun 2011]

PIK3R1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.29).

BP6

Variant 5-68293098-C-T is Benign according to our data. Variant chr5-68293098-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 532023.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}. Variant chr5-68293098-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000303 (46/152000) while in subpopulation NFE AF= 0.000559 (38/67988). AF 95% confidence interval is 0.000418. There are 0 homozygotes in gnomad4. There are 16 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PIK3R1	NM_181523.3 linkuse as main transcript	c.1020-3C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000521381.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PIK3R1	ENST00000521381.6 linkuse as main transcript	c.1020-3C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_181523.3	P1	P27986-1

Frequencies

GnomAD3 genomes

AF:

0.000303

AC:

AN:

152000

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00202

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000559

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000303

AC:

AN:

251024

Hom.:

AF XY:

0.000273

AC XY:

AN XY:

135688

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000870

Gnomad ASJ exome

AF:

0.00159

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000502

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000276

AC:

401

AN:

1454906

Hom.:

Cov.:

AF XY:

0.000272

AC XY:

197

AN XY:

724236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000896

Gnomad4 ASJ exome

AF:

0.00184

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000295

Gnomad4 OTH exome

AF:

0.000383

GnomAD4 genome

AF:

0.000303

AC:

AN:

152000

Hom.:

Cov.:

AF XY:

0.000216

AC XY:

AN XY:

74224

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00202

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000559

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000395

Hom.:

Bravo

AF:

0.000329

EpiCase

AF:

0.000709

EpiControl

AF:

0.000771

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Nov 02, 2017

- -

SHORT syndrome;C3554689:Agammaglobulinemia 7, autosomal recessive;C4014934:Immunodeficiency 36

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 19, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Benign

0.86

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0019

dbscSNV1_RF

Benign

0.048

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