NM_005026.5:c.4C>T

Variant names:

• chr1-9710459-C-T
• NM_005026.5:c.4C>T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_005026.5(PIK3CD):​c.4C>T​(p.Pro2Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,696 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P2L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PIK3CD NM_005026.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.38

Genes affected

PIK3CD (HGNC:8977): (phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta) Phosphoinositide 3-kinases (PI3Ks) phosphorylate inositol lipids and are involved in the immune response. The protein encoded by this gene is a class I PI3K found primarily in leukocytes. Like other class I PI3Ks (p110-alpha p110-beta, and p110-gamma), the encoded protein binds p85 adapter proteins and GTP-bound RAS. However, unlike the other class I PI3Ks, this protein phosphorylates itself, not p85 protein.[provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3808468).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PIK3CD	NM_005026.5	c.4C>T	p.Pro2Ser	missense_variant	Exon 3 of 24	ENST00000377346.9	NP_005017.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PIK3CD	ENST00000377346.9	c.4C>T	p.Pro2Ser	missense_variant	Exon 3 of 24	1	NM_005026.5	ENSP00000366563.4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461696 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727174

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.074	T
BayesDel_noAF	Benign	-0.34
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.13	.;T;D;.;T
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.39
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.88	.;D;D;D;.
M_CAP	Benign	0.035	D
MetaRNN	Benign	0.38	T;T;T;T;T
MetaSVM	Benign	-0.51	T
MutationAssessor	Benign	1.5	.;.;L;.;.
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-4.3	D;.;D;.;D
REVEL	Benign	0.18
Sift	Uncertain	0.0050	D;.;D;.;D
Sift4G	Uncertain	0.028	D;D;D;D;D
Polyphen		0.92	P;.;P;P;.
Vest4		0.28
MutPred		0.35		Loss of catalytic residue at P2 (P = 3e-04);Loss of catalytic residue at P2 (P = 3e-04);Loss of catalytic residue at P2 (P = 3e-04);Loss of catalytic residue at P2 (P = 3e-04);Loss of catalytic residue at P2 (P = 3e-04);
MVP		0.57
MPC		1.3
ClinPred		0.94	D
GERP RS		3.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.15
gMVP		0.84

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: chr1-9770517;