chr19-18155934-C-G

Variant names:

• chr19-18155934-C-G
• NM_005027.4:c.55C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005027.4(PIK3R2):​c.55C>G​(p.Arg19Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000706 in 1,417,050 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: PIK3R2 NM_005027.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.57

Genes affected

PIK3R2 (HGNC:8980): (phosphoinositide-3-kinase regulatory subunit 2) Phosphatidylinositol 3-kinase (PI3K) is a lipid kinase that phosphorylates phosphatidylinositol and similar compounds, creating second messengers important in growth signaling pathways. PI3K functions as a heterodimer of a regulatory and a catalytic subunit. The protein encoded by this gene is a regulatory component of PI3K. Three transcript variants, one protein coding and the other two non-protein coding, have been found for this gene. [provided by RefSeq, Apr 2019]

ENSG00000268173 (HGNC:):

ACMG classification

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=0.20086566).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PIK3R2	NM_005027.4	c.55C>G	p.Arg19Gly	missense_variant	Exon 2 of 16	ENST00000222254.13	NP_005018.2
PIK3R2	NR_073517.2	n.610C>G		non_coding_transcript_exon_variant	Exon 2 of 16
PIK3R2	NR_162071.1	n.610C>G		non_coding_transcript_exon_variant	Exon 2 of 15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PIK3R2	ENST00000222254.13	c.55C>G	p.Arg19Gly	missense_variant	Exon 2 of 16	1	NM_005027.4	ENSP00000222254.6
ENSG00000268173	ENST00000593731.1	n.55C>G		non_coding_transcript_exon_variant	Exon 2 of 25	2		ENSP00000471914.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.06e-7 AC: 1 AN: 1417050 Hom.: 0 Cov.: 31 AF XY: 0.00000143 AC XY: 1 AN XY: 701132

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.47	T;T;T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.22
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	.;T;.
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.20	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.73	N;.;N
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-2.2	N;.;.
REVEL	Benign	0.11
Sift	Uncertain	0.0050	D;.;.
Sift4G	Uncertain	0.0050	D;D;D
Polyphen		0.96	D;.;D
Vest4		0.38
MutPred		0.30		Loss of stability (P = 0.0304);Loss of stability (P = 0.0304);Loss of stability (P = 0.0304);
MVP		0.37
MPC		0.81
ClinPred		0.88	D
GERP RS		3.3
Varity_R		0.87
gMVP		0.54

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-18266744;