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FLASH GENE
Symbol PIK3CA contributors: mct/npt/pgu - updated : 06-07-2015
HGNC name phosphoinositide-3-kinase, catalytic, alpha polypeptide
HGNC id 8975
ASSOCIATED DISORDERS
corresponding disease(s) CLOVES , MCAP , CWS5
Other morbid association(s)
TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
tumoral     --over  
in head and necks squamous cell carcinomas
tumoral       gain of function
in colorectal cancer and glioblastoma
tumoral somatic mutation      
in anaplastic oligodendrogliomas, in anaplastic astrocytomas, glioblastoma multiforme, and medulloblastomas
tumoral somatic mutation      
in breast carcinomas and hepatocellular carcinomas, modulate PI3K signalling to influence tumour behaviour and occur in up to 40p100 of breast cancers
tumoral somatic mutation      
in colorectal and gastric carcinomas
tumoral   amplification    
in thyroid carcinoma, relatively common and may be a novel mechanism in activating the PI3K/Akt pathway in some thyroid tumors
tumoral somatic mutation      
in epidermal nevi (EN) in seborrheic keratoses (SK)in association to mutations in FGFR3
tumoral somatic mutation      
are likely to occur late in the development of oral squamous cell carcinoma, and play a crucial role through the PI3K-AKT signaling pathway in cancer progression
tumoral       gain of function
in diffuse large B cell lymphoma
constitutional somatic mutation      
somatic mosaicism for postzygotic activating mutations in the PIK3CA gene
constitutional somatic mutation     gain of function
in Cowden and Cowden-like syndrome
constitutional somatic mutation     gain of function
in isolated congenital macrodactyly is caused by somatic activation of the PI3K/AKT cell-signaling pathway and is genetically and biochemically related to other overgrowth syndromes
constitutional       gain of function
of PIK3CA/AKT1/MTOR axis in individuals with Down syndrome, with and without AD pathology, in comparison with respective controls
constitutional somatic mutation      
cause 54p100 of venous malformation
Susceptibility
Variant & Polymorphism
Candidate gene
Marker
Therapy target
SystemTypeDisorderPubmed
cancerbrain 
therapeutic target in anaplastic oligodendrogliomas, in anaplastic astrocytomas, glioblastoma multiforme, and medulloblastomas
osteoarticularbone 
therapeutic agents that target this enzyme have the potential to significantly affect bone homeostasis
cancerthyroid 
targeting in the treatment of anaplastic thyroid carcinomas
tumorvascular 
inhibitors of PIK3Ca might have therapeutic applications for individuals with CLOVES syndrome or other overgrowth anomalies that are also the result of somatic activating mutations in PIK3CA
cancer  
targeting the interaction of RAS with PIK3CA has the potential to impair tumor formation by altering the tumor-host relationship, in addition to previously described tumor cell-autonomous effects
ANIMAL & CELL MODELS