Indications
Osimertinib is a kinase inhibitor indicated for the treatment of patients with metastatic epidermal growth factor receptor (EGFR) T790M mutation-positive non-small cell lung cancer (NSCLC), as detected by an FDA-approved test, who have progressed on or after EGFR tyrosine kinase inhibitor therapy.
Dosage
80 mg orally once daily, with or without food.
Administration
Administration To Patients Who Have Difficulty Swallowing Solids:Â Disperse tablet in 60 ml (2 ounces) of non-carbonated water only. Stir until tablet is dispersed into small pieces (the tablet will not completely dissolve) and swallow immediately. Do not crush, heat, or ultrasonicate during preparation. Rinse the container with 120 ml to 240 ml (4 to 8 ounces of) water and immediately drink.
If administration via nasogastric tube is required, disperse the tablet as above in 15 ml of non-carbonated water, and then use an additional 15 ml of water to transfer any residues to the syringe. The resulting 30 ml liquid should be administered as per the nasogastric tube instructions with appropriate water flushes (approximately 30 ml).
Interaction
Strong CYP3A Inhibitors
Concomitant administration of Osimertinib should be avoided with strong CYP3A inhibitors, including macrolide antibiotics (e.g., telithromycin), antifungals (e.g., itraconazole), antivirals (e.g., ritonavir), nefazodone, as concomitant use of strong CYP3A inhibitors may increase Osimertinib plasma concentrations. If no other alternative exists, patients should be monitored more closely for adverse reactions.Strong CYP3A Inducers
Concomitant administration of Osimertinib should be avoided with strong CYP3A inducers (e.g., phenytoin, rifampicin, carbamazepine, St. John’s Wort) as strong CYP3A inducers may decrease Osimertinib plasma concentrations.
Concomitant administration of Osimertinib should be avoided with strong CYP3A inhibitors, including macrolide antibiotics (e.g., telithromycin), antifungals (e.g., itraconazole), antivirals (e.g., ritonavir), nefazodone, as concomitant use of strong CYP3A inhibitors may increase Osimertinib plasma concentrations. If no other alternative exists, patients should be monitored more closely for adverse reactions.Strong CYP3A Inducers
Concomitant administration of Osimertinib should be avoided with strong CYP3A inducers (e.g., phenytoin, rifampicin, carbamazepine, St. John’s Wort) as strong CYP3A inducers may decrease Osimertinib plasma concentrations.
Side Effects
The most common (>20%) adverse reactions (all grades) observed in Osimertinib-treated patients were diarrhea (42%), rash (41%), dry skin (31%), and nail toxicity (25%). The most frequent adverse reactions that led to dose reductions or interruptions were: electrocardiogram QTc prolonged (2.2%) and neutropenia (1.9%). Serious adverse reactions reported in 2% or more patients were pneumonia and pulmonary embolus.
Pregnancy & Lactation
Based on its mechanism of action and animal data, Osimertinib can cause fetal harm when administered to a pregnant woman. There are no available data on Osimertinib use in pregnant women. Pregnant women should be advised of the potential risk to a fetus.
There are no data on the presence of Osimertinib in human milk, the effects of Osimertinib on the breastfed infant or on milk production. Lactating woman should be advised not to breastfeed during treatment.Pediatric Use
The safety and effectiveness of Osimertinib in pediatric patients have not been established.Geriatric Use
No overall differences in safety were observed between patients 65 years and older and those younger than 65 years.
There are no data on the presence of Osimertinib in human milk, the effects of Osimertinib on the breastfed infant or on milk production. Lactating woman should be advised not to breastfeed during treatment.Pediatric Use
The safety and effectiveness of Osimertinib in pediatric patients have not been established.Geriatric Use
No overall differences in safety were observed between patients 65 years and older and those younger than 65 years.
Reviews
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