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BIOMARKER:

PIK3CA wild-type+ ESR1 wild-type

i
Other names: PIK3CA, Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha, Phosphoinositide-3-kinase, catalytic, alpha polypeptide, Serine/threonine protein kinase PIK3CA, PtdIns-3-kinase subunit P110-alpha, PI3K-alpha, Phosphatidylinositol-4,5-bisphosphate 3-kinase 110 KDa catalytic subunit alpha, Phosphatidylinositol 3-kinase, Catalytic, 110-KD, alpha, PI3-kinase P110 subunit alpha, PI3-kinase subunit alpha, PtdIns-3-kinase subunit alpha, PI3Kalpha, P110alpha, PI3K, ESR1, Era, ESR, NR3A1, ER, ER beta
Entrez ID:
1year
The oral SERD Elacestrant in combination with the PI3K inhibitor MEN1611 inhibits tumor growth in ER+/HER2- breast cancer in vitro and in PDX models (AACR 2023)
"Overall, in all the tested in vivo models the combination of Elacestrant and MEN1611 was superior in comparison to the single agents by overcoming resistance to ER inhibition potentially driven by PI3K pathway activation in PIK3CA mutated tumors. The current data support the use of Elacestrant, the first oral SERD with positive phase III results in the EMERALD trial (Bidard et al.; JCO 2022), in combination with the PI3K inhibitor MEN1611, in ER+/HER2- mBC patients harboring PIK3CA mutations and who progressed to CDK4/6i plus ET."
Combination therapy • Preclinical
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HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha)
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HER-2 negative • PIK3CA mutation • ER mutation • ESR1 mutation • PIK3CA mutation + ESR1 mutation • PIK3CA mutation + ESR1 wild-type • PIK3CA wild-type+ ESR1 wild-type • CDK4 mutation
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MEN1611 • Orserdu (elacestrant)