chr17-8881007-G-A

Variant names:

• chr17-8881007-G-A
• rs772088859
• NM_001142633.3:c.2393C>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001142633.3(PIK3R5):​c.2393C>T​(p.Ser798Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000304 in 1,613,488 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000031 (0 hom.)
• Consequence: PIK3R5 NM_001142633.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.85
• Publications: 0 publications found

Genes affected

PIK3R5 (HGNC:30035): (phosphoinositide-3-kinase regulatory subunit 5) Phosphatidylinositol 3-kinases (PI3Ks) phosphorylate the inositol ring of phosphatidylinositol at the 3-prime position, and play important roles in cell growth, proliferation, differentiation, motility, survival and intracellular trafficking. The PI3Ks are divided into three classes: I, II and III, and only the class I PI3Ks are involved in oncogenesis. This gene encodes the 101 kD regulatory subunit of the class I PI3K gamma complex, which is a dimeric enzyme, consisting of a 110 kD catalytic subunit gamma and a regulatory subunit of either 55, 87 or 101 kD. This protein recruits the catalytic subunit from the cytosol to the plasma membrane through high-affinity interaction with G-beta-gamma proteins. Multiple alternatively spliced transcript variants encoding two distinct isoforms have been found. [provided by RefSeq, Oct 2011]

PIK3R5 Gene-Disease associations (from GenCC):

• spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• ataxia with oculomotor apraxia type 3

  Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

LOC124903919 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.937

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001142633.3. 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
	PIK3R5	NM_001142633.3	MANE Select	c.2393C>T	p.Ser798Leu	missense	Exon 18 of 19	NP_001136105.1	L7RT34
	PIK3R5	NM_014308.4		c.2393C>T	p.Ser798Leu	missense	Exon 18 of 19	NP_055123.2	Q8WYR1-1
	PIK3R5	NM_001388396.1		c.2390C>T	p.Ser797Leu	missense	Exon 18 of 19	NP_001375325.1	J3KSW1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIK3R5	ENST00000447110.6	TSL:5 MANE Select	c.2393C>T	p.Ser798Leu	missense	Exon 18 of 19	ENSP00000392812.1	Q8WYR1-1
	PIK3R5	ENST00000581552.5	TSL:1	c.2393C>T	p.Ser798Leu	missense	Exon 18 of 19	ENSP00000462433.1	Q8WYR1-1
	PIK3R5	ENST00000623421.3	TSL:1	c.1235C>T	p.Ser412Leu	missense	Exon 17 of 18	ENSP00000485280.1	Q8WYR1-2

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152152 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 251460 AF XY: 0.0000368

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000315 AC: 46 AN: 1461336 Hom.: 0 Cov.: 32 AF XY: 0.0000261 AC XY: 19 AN XY: 727044

African (AFR) AF: 0.0000299 AC: 1 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000396 AC: 44 AN: 1111508

Other (OTH) AF: 0.00 AC: 0 AN: 60376

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152152 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74330

African (AFR) AF: 0.0000241 AC: 1 AN: 41412

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000378

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Pathogenic	0.28
CADD	Pathogenic	26
DANN	Benign	0.96
DEOGEN2	Uncertain	0.69	D
Eigen	Uncertain	0.37
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.94	D
MetaSVM	Benign	-0.39	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		4.8
PrimateAI	Uncertain	0.56	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.64
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.84
MutPred		0.82		Loss of disorder (P = 0.0087)
MVP		0.92
MPC		1.1
ClinPred		0.88	D
GERP RS		4.0
Varity_R		0.28
gMVP		0.46
Mutation Taster		=87/13	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs772088859; hg19: chr17-8784324;