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is indicated in combination with fulvestrant for the treatment of adults with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative, PIK3CA-mutated, advanced or metastatic breast cancer as detected by an FDA-approved test following progression on or after an endocrine-based regimen. PIQRAY is a kinase inhibitor indicated in combination with fulvestrant for the treatment of adults with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative, PIK3CA-mutated, advanced or metastatic breast cancer as detected by an FDA-approved test following progression on or after an endocrine-based regimen.

is contraindicated in patients with severe hypersensitivity to it or any of its components [see Warnings and Precautions (5.1)] . Severe hypersensitivity to PIQRAY or to any of its components. ( 4 )

Severe Hypersensitivity : Permanently discontinue PIQRAY. Promptly initiate appropriate treatment. ( 5.1 ) Severe Cutaneous Adverse Reactions (SCARs) : PIQRAY can cause SCARs, including Stevens-Johnson syndrome (SJS), erythema multiforme (EM), toxic epidermal necrolysis (TEN), and drug reaction with eosinophilia and systemic symptoms (DRESS). Interrupt PIQRAY for signs or symptoms of SCARs. Permanently discontinue PIQRAY if SCARs are confirmed. ( 5.2 ) Hyperglycemia : PIQRAY can cause severe hyperglycemia, in some cases associated with hyperglycemic hyperosmolar non-ketotic syndrome (HHNKS) or ketoacidosis. Before initiating treatment with PIQRAY, test fasting plasma glucose (FPG), HbA1c, and optimize blood glucose. Consider premedication with metformin prior to the initiation of PIQRAY based on patient risk factors for hyperglycemia, gastrointestinal tolerability, and clinical situation. Use of metformin premedication prior to the initiation of PIQRAY decreases the incidence and severity of hyperglycemia, but increases the incidence and severity of nausea, vomiting, and diarrhea adverse reactions. After initiating treatment, monitor FPG and HbA1c periodically. Initiate or optimize anti-hyperglycemic medications as clinically indicated. Interrupt, reduce dose, or discontinue PIQRAY if severe hyperglycemia occurs. ( 2.3 , 5.3 , 6.1 ) Pneumonitis : PIQRAY can cause severe pneumonitis and interstitial lung disease. Monitor for clinical symptoms or radiological changes. …

8.1 Pregnancy Risk Summary PIQRAY is used in combination with fulvestrant. Refer to the Full Prescribing Information of fulvestrant for pregnancy information. Based on animal data and mechanism of action, PIQRAY can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology (12.1)] . There are no available data in pregnant women to inform the drug-associated risk. In animal reproduction studies, oral administration of alpelisib to pregnant rats and rabbits during organogenesis caused adverse developmental outcomes, including embryo-fetal mortality (post-implantation loss), reduced fetal weights, and increased incidences of fetal malformations at maternal exposures ≥ …