chr11-17091321-G-A

Variant names:

• chr11-17091321-G-A
• rs201507095
• NM_002645.4:c.4878+13C>T

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS1

The NM_002645.4(PIK3C2A):​c.4878+13C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000119 in 1,602,294 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: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000011 (0 hom.)
• Consequence: PIK3C2A NM_002645.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.424
• Publications: 0 publications found

Genes affected

PIK3C2A (HGNC:8971): (phosphatidylinositol-4-phosphate 3-kinase catalytic subunit type 2 alpha) The protein encoded by this gene belongs to the phosphoinositide 3-kinase (PI3K) family. PI3-kinases play roles in signaling pathways involved in cell proliferation, oncogenic transformation, cell survival, cell migration, and intracellular protein trafficking. This protein contains a lipid kinase catalytic domain as well as a C-terminal C2 domain, a characteristic of class II PI3-kinases. C2 domains act as calcium-dependent phospholipid binding motifs that mediate translocation of proteins to membranes, and may also mediate protein-protein interactions. The PI3-kinase activity of this protein is not sensitive to nanomolar levels of the inhibitor wortmanin. This protein was shown to be able to be activated by insulin and may be involved in integrin-dependent signaling. [provided by RefSeq, Jul 2008]

PIK3C2A Gene-Disease associations (from GenCC):

• oculocerebrodental syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.64).
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000197 (3/152234) while in subpopulation EAS AF = 0.000579 (3/5180). AF 95% confidence interval is 0.000157. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002645.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIK3C2A	NM_002645.4	MANE Select	c.4878+13C>T		intron	N/A	NP_002636.2	L7RRS0
	PIK3C2A	NM_001321378.2		c.4878+13C>T		intron	N/A	NP_001308307.1	O00443-1
	PIK3C2A	NM_001386870.1		c.4710+13C>T		intron	N/A	NP_001373799.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIK3C2A	ENST00000691414.1	MANE Select	c.4878+13C>T		intron	N/A	ENSP00000509400.1	O00443-1
	PIK3C2A	ENST00000265970.11	TSL:1	c.4878+13C>T		intron	N/A	ENSP00000265970.6	O00443-1
	PIK3C2A	ENST00000531428.1	TSL:1	n.1400+13C>T		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152116 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000578

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000412 AC: 1 AN: 242498 AF XY: 0.00000763

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000556

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000110 AC: 16 AN: 1450060 Hom.: 0 Cov.: 30 AF XY: 0.0000111 AC XY: 8 AN XY: 721412

African (AFR) AF: 0.00 AC: 0 AN: 32666

American (AMR) AF: 0.00 AC: 0 AN: 41768

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25726

East Asian (EAS) AF: 0.000404 AC: 16 AN: 39640

South Asian (SAS) AF: 0.00 AC: 0 AN: 83744

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53334

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5700

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1107510

Other (OTH) AF: 0.00 AC: 0 AN: 59972

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152234 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74444

African (AFR) AF: 0.00 AC: 0 AN: 41526

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000579 AC: 3 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2114

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.64
CADD	Benign	9.4
DANN	Benign	0.84
PhyloP100		-0.42

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

Other links and lift over

dbSNP: rs201507095; hg19: chr11-17112868;