|
rs121913279
|
|
Colorectal Carcinoma
|
|
0.820 |
GeneticVariation
|
BEFREE |
Collectively, our data suggest that PF-04691502 exhibits potent anticancer activity in colorectal cancer by targeting both PIK3CA (H1047R) mutant CSCs and their derivatives.
|
23826249 |
2013 |
|
rs121913279
|
|
Colorectal Carcinoma
|
|
0.820 |
GeneticVariation
|
BEFREE |
We developed a sensitive, simple and rapid approach to detect the low-abundance PIK3CA (H1047R) mutation in real CRC specimens, providing an effective tool for guiding cancer targeted therapy.
|
27405731 |
2016 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
To model PIK3CA-activating mutations in late stages of cancer, we took advantage of the isogenic conversion of a PIK3CA-wild-type tumor into a PIK3CA H1047R-mutated tumor using the highly metastatic colorectal cancer cell line SW48.
|
23986086 |
2013 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
Active mutations of PI3K catalytic subunit PIK3CA (e.g., H1047R) and amplification of its homolog PIK3CB are observed in a large number of breast cancers.
|
29545474 |
2018 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
PIK3CA(H1047R) expression alone failed to promote tumor formation, but dramatically enhanced tumorigenesis initiated by KRAS(G12D).
|
26567140 |
2015 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
For the first-time we demonstrated a PIK3CA mutation (H1047L) simultaneously occurring with a 15-bp deletion in KIT exon 11 in one tumor.
|
21906875 |
2011 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
Recently, PI3K H1047R mutation has been reported to sensitize breast cancer cells to PI3K inhibition by aspirin.
|
29504069 |
2018 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
This study proposed to investigate the relationship of PIK3CA somatic mutations, the most common activating mutations in human breast cancer (BC), and the efficacy of neoadjuvant chemotherapy (NCT).Using a novel liquid chip technology,PIK3CA DNA somatic mutations and HER2, PTEN, EGFR mRNA expression profiles were analyzed in formalin fixed paraffin embedded samples of 93 BC patients treated with epirubicin plus docetaxel NCT.PIK3CA mutations were found in 30 patients (32.3%), in which the point mutations of E542K, E545K, H1047L and H1047R were 4.3, 9.7, 4.3 and 14.0%respectively.
|
25027743 |
2014 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
Using a variety of physiologically relevant model systems with defined natural or knock-in PIK3CA mutations and/or PI3K hyperactivation, we show that PIK3CA-E545K mutations (found in ∼20% of PIK3CA-mutant breast cancers), but not PIK3CA-H1047R mutations (found in 55% of PIK3CA-mutant breast cancers), preferentially activate AKT1.
|
27197157 |
2016 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
Recent studies by Meyer and colleagues, and Liu and colleagues demonstrate that expression of the H1047R exon 20 mutant of PIK3CA in luminal mammary epithelial cells induces tumorigenesis, implying that PIK3CA mutation is an early event in breast cancer.
|
22315990 |
2012 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
Gene set enrichment analysis reveals a highly significant concordance of the genes differentially expressed in MCF-10A-H1047R cells and the established protein and RNA signatures of basal breast cancer.
|
25583473 |
2015 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
To elucidate mechanisms of resistance to PI3K-targeted therapy, we constructed a mouse model of breast cancer conditionally expressing human PIK3CA(H1047R).
|
21822287 |
2011 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
By contrast, we did not found any tumour harbouring H1047R mutation in exon 20.
|
20571907 |
2011 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
Sequencing of tumors identified seven PIK3CA exon 20 mutations (H1047R) and three exon 9 mutations (E545K).
|
24504125 |
2014 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
Using in situ genetic lineage tracing and limiting dilution transplantation, we have unravelled the potential of PIK3CA(H1047R), one of the most frequent mutations occurring in human breast cancer, to induce multipotency during tumorigenesis in the mammary gland.
|
26266975 |
2015 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
One tumour with a PIK3CA H1047R mutation also had a KRAS Q61H mutation.
|
27441415 |
2017 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
Here we show that expression of PIK3CA(H1047R</span>) in lineage-committed basal Lgr5-positive and luminal keratin-8-positive cells of the adult mouse mammary gland evokes cell dedifferentiation into a multipotent stem-like state, suggesting this to be a mechanism involved in the formation of heterogeneous, multi-lineage mammary tumours.
|
26266975 |
2015 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
In this study, we report the development of a knock-in mouse model for breast cancer where the endogenous Pik3ca allele was modified to allow tissue-specific conditional expression of a frequently found Pik3ca(H1047R) (Pik3ca(e20H1047R)) mutant allele.
|
22370636 |
2013 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
Compared to MMTV-Her-2 transgenic mouse mammary tumors, H1047R tumors showed increased upregulation of Wnt/β-catenin/Axin2, hepatocyte growth factor (Hgf)/Stat3, insulin-like growth factor 2 (Igf-2), and Igf-1R pathways.
|
28296140 |
2017 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
Similarly, in human HCC cell lines, silencing of SGK3 reduced PIK3CA(E545K) -but not PIK3CA(H1047R)- induced accelerated tumor cell proliferation.
|
30975125 |
2019 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
The target of rapamycin inhibitor RAD001 blocks tumor growth induced by the H1047R p110alpha mutant.
|
16432179 |
2006 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
In the present study, we show that the expression of mutant PIK3CA H1047R in the luminal mammary epithelium evokes heterogeneous tumors that express luminal and basal markers and are positive for the estrogen receptor.
|
21482677 |
2011 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
Interestingly, expression of Pik3ca(H1047R) in unipotent basal cells gave rise to luminal-like cells, while its expression in unipotent luminal cells gave rise to basal-like cells before progressing into invasive tumours.
|
26266985 |
2015 |
|
rs121913279
|
|
Malignant neoplasm of breast
|
|
0.800 |
GeneticVariation
|
BEFREE |
We aimed to detect the tumor-derived free DNA in metastasis-free LNs in patients with breast cancers harboring the PIK3CA-H1047R mutation.
|
30805870 |
2019 |
|
rs121913279
|
|
Neoplasms
|
|
0.800 |
GeneticVariation
|
BEFREE |
Notably, most PIK3CA(H1047R)-driven mammary tumors recurred after PIK3CA(H1047R) inactivation.
|
21822287 |
2011 |