Gene Gene information from NCBI Gene database.
Entrez ID 5290
Gene name Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha
Gene symbol PIK3CA
Synonyms (NCBI Gene)
CCM4CLAPOCLOVECWS5HMHMCAPMCMMCMTCPI3KPI3K-alphap110-alpha
Chromosome 3
Chromosome location 3q26.32
Summary Phosphatidylinositol 3-kinase is composed of an 85 kDa regulatory subunit and a 110 kDa catalytic subunit. The protein encoded by this gene represents the catalytic subunit, which uses ATP to phosphorylate PtdIns, PtdIns4P and PtdIns(4,5)P2. This gene has
SNPs SNP information provided by dbSNP.
69
SNP ID Visualize variation Clinical significance Consequence
rs104886003 G>A,C Pathogenic, pathogenic-likely-pathogenic, likely-pathogenic, drug-response, not-provided Missense variant, coding sequence variant
rs121913272 T>C,G Pathogenic, likely-pathogenic Missense variant, coding sequence variant
rs121913273 G>A,C Pathogenic, likely-pathogenic Missense variant, coding sequence variant
rs121913274 A>C,G,T Pathogenic, pathogenic-likely-pathogenic, likely-pathogenic Missense variant, coding sequence variant
rs121913275 G>A,C,T Pathogenic, likely-pathogenic, likely-benign Missense variant, synonymous variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
72
miRTarBase ID miRNA Experiments Reference
MIRT006837 hsa-miR-124-3p Luciferase reporter assayqRT-PCRWestern blot 22940133
MIRT006837 hsa-miR-124-3p Luciferase reporter assayqRT-PCRWestern blot 22940133
MIRT007316 hsa-miR-148b-3p Western blot 23238785
MIRT007316 hsa-miR-148b-3p Western blot 23238785
MIRT017306 hsa-miR-335-5p Microarray 18185580
Transcription factors Transcription factors information provided by TRRUST V2 database.
2
Transcription factor Regulation Reference
FOXO3 Unknown 19299143
HIF1A Unknown 23060442
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
97
GO ID Ontology Definition Evidence Reference
GO:0000166 Function Nucleotide binding IEA
GO:0001525 Process Angiogenesis IEA
GO:0001889 Process Liver development IEA
GO:0001944 Process Vasculature development TAS 19200708
GO:0004674 Function Protein serine/threonine kinase activity IEA
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
171834 8975 ENSG00000121879
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P42336
Protein name Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform (PI3-kinase subunit alpha) (PI3K-alpha) (PI3Kalpha) (PtdIns-3-kinase subunit alpha) (EC 2.7.1.137) (EC 2.7.1.153) (Phosphatidylinositol 4,5-bisphosphate 3-kinase 110 kDa cataly
Protein function Phosphoinositide-3-kinase (PI3K) phosphorylates phosphatidylinositol (PI) and its phosphorylated derivatives at position 3 of the inositol ring to produce 3-phosphoinositides (PubMed:15135396, PubMed:23936502, PubMed:28676499). Uses ATP and PtdI
PDB 2ENQ , 2RD0 , 3HHM , 3HIZ , 3ZIM , 4JPS , 4L1B , 4L23 , 4L2Y , 4OVU , 4OVV , 4TUU , 4TV3 , 4WAF , 4YKN , 4ZOP , 5DXH , 5DXT , 5FI4 , 5ITD , 5SW8 , 5SWG , 5SWO , 5SWP , 5SWR , 5SWT , 5SX8 , 5SX9 , 5SXA , 5SXB , 5SXC , 5SXD , 5SXE , 5SXF , 5SXI , 5SXJ , 5SXK , 5UBR , 5UK8 , 5UKJ , 5UL1 , 5XGH , 5XGI , 5XGJ , 6GVF , 6GVG , 6GVH , 6GVI , 6NCT , 6OAC , 6PYS
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF02192 PI3K_p85B 32 107 PI3-kinase family, p85-binding domain Family
PF00794 PI3K_rbd 173 292 PI3-kinase family, ras-binding domain Domain
PF00792 PI3K_C2 350 485 Phosphoinositide 3-kinase C2 Domain
PF00613 PI3Ka 519 704 Phosphoinositide 3-kinase family, accessory domain (PIK domain) Family
PF00454 PI3_PI4_kinase 796 1015 Phosphatidylinositol 3- and 4-kinase Family
Sequence
MPPRPSSGELWGIHLMPPRILVECLLPNGMIVTLECLREATLITIKHELFKEARKYPLHQ
LLQDESSYIFVSVTQEAEREEFFDETRRLCDLRLFQPFLKVIEPVGN
REEKILNREIGFA
IGMPVCEFDMVKDPEVQDFRRNILNVCKEAVDLRDLNSPHSRAMYVYPPNVESSPELPKH
IYNKLDKGQIIVVIWVIVSPNNDKQKYTLKINHDCVPEQVIAEAIRKKTRSMLLSSEQLK
LCVLEYQGKYILKVCGCDEYFLEKYPLSQYKYIRSCIMLGRMPNLMLMAKES
LYSQLPMD
CFTMPSYSRRISTATPYMNGETSTKSLWVINSALRIKILCATYVNVNIRDIDKIYVRTGI
YHGGEPLCDNVNTQRVPCSNPRWNEWLNYDIYIPDLPRAARLCLSICSVKGRKGAKEEHC
PLAWGNINLFDYTDTLVSGKMALNLWPVPHGLEDLLNPIGVTGSNPNKETPCLELEFDWF
SSVVK
FPDMSVIEEHANWSVSREAGFSYSHAGLSNRLARDNELRENDKEQLKAISTRDPL
SEITEQEKDFLWSHRHYCVTIPEILPKLLLSVKWNSRDEVAQMYCLVKDWPPIKPEQAME
LLDCNYPDPMVRGFAVRCLEKYLTDDKLSQYLIQLVQVLKYEQYLDNLLVRFLLKKALTN
QRIGHFFFWHLKSEMHNKTVSQRFGLLLESYCRACGMYLKHLNR
QVEAMEKLINLTDILK
QEKKDETQKVQMKFLVEQMRRPDFMDALQGFLSPLNPAHQLGNLRLEECRIMSSAKRPLW
LNWENPDIMSELLFQNNEIIFKNGDDLRQDMLTLQIIRIMENIWQNQGLDLRMLPYGCLS
IGDCVGLIEVVRNSHTIMQIQCKGGLKGALQFNSHTLHQWLKDKNKGEIYDAAIDLFTRS
CAGYCVATFILGIGDRHNSNIMVKDDGQLFHIDFGHFLDHKKKKFGYKRERVPFVLTQDF
LIVISKGAQECTKTREFERFQEMCYKAYLAIRQHANLFINLFSMMLGSGMPELQS
FDDIA
YIRKTLALDKTEQEALEYFMKQMNDAHHGGWTTKMDWIFHTIKQHALN
Sequence length 1068
Interactions View interactions
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
154
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Abnormal cardiovascular system morphology Pathogenic; Likely pathogenic rs121913279, rs104886003, rs121913274, rs121913284, rs121913288, rs1057519925, rs1057519929, rs121913273, rs121913272, rs587776932, rs397517201 RCV001327968
RCV001327963
RCV001327964
RCV001327959
RCV001327967
View all (6 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Abnormal cerebral morphology Pathogenic rs121913287, rs587776932 RCV002275002
RCV002274888
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Abnormality of the hairline Pathogenic rs1057519942 RCV000852337
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Adenocarcinoma of the large intestine Likely pathogenic; Pathogenic rs104886003 RCV006253574
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Adrenal cortex carcinoma - ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
BECKWITH-WIEDEMANN SYNDROME Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
BREAST CANCER HPO
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
BREAST NEOPLASMS CTD
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
2-4 toe syndactyly Syndactyly Of The Toes HPO_DG
★☆☆☆☆
Found in Text Mining only
Acoustic Neuroma Acoustic Neuroma BEFREE 28737257
★☆☆☆☆
Found in Text Mining only
Actinic keratosis Actinic keratosis BEFREE 27299186
★☆☆☆☆
Found in Text Mining only
ACTIVATED PI3K-DELTA SYNDROME ACTIVATED PI3K-DELTA SYNDROME BEFREE 27116393, 27616589, 28167755, 28842185, 29556229, 30116245, 31031754
★☆☆☆☆
Found in Text Mining only
Acute Erythroblastic Leukemia Erythroblastic Leukemia BEFREE 20445019
★☆☆☆☆
Found in Text Mining only
Acute leukemia Leukemia BEFREE 12556562, 15608678, 16115127, 23705826, 24966925, 30639430, 31412710
★☆☆☆☆
Found in Text Mining only
Acute lymphocytic leukemia Lymphocytic Leukemia BEFREE 18483299, 18665177, 22685175, 23958920, 24244612, 26080839, 27018341, 28125433, 28159681, 28295182, 29179029, 29574283, 30669372, 30795552, 31705930
★☆☆☆☆
Found in Text Mining only
Acute monocytic leukemia Monocytic Leukemia BEFREE 26999641, 29143813, 29276026, 29559471, 31217869
★☆☆☆☆
Found in Text Mining only
Acute pancreatitis Pancreatitis BEFREE 29620213, 30694771, 31414732, 31531867
★☆☆☆☆
Found in Text Mining only
Acute Promyelocytic Leukemia Promyelocytic Leukemia BEFREE 18491231, 24676995, 27840989, 30316766, 31032633
★☆☆☆☆
Found in Text Mining only