Absorption: Well absorbed following oral administration.
Distribution: 20% confined to plasma.
Metabolism/Excretion: Mostly metabolized by liver and other systems (CYP3A4 and P-gp; metabolites are mostly excreted in feces [80%] and urine [5%]).
Half-life: 30 hr.
CV: peripheral edema.
Derm: delayed wound healing, dry skin, pruritus, rash.
GI: HEPATIC ARTERY THROMBOSIS, anorexia, constipation, diarrhea, mucositis, mouth ulcers, nausea, stomatitis, vomiting.
GU: acute renal failure, amenorrhea, ↓ fertility, kidney arterial/venous thrombosis (Zortress), menstrual irregularities, proteinuria.
Hemat: HEMOLYTIC UREMIC SYNDROME, THROMBOTIC MICROANGIOPATHY, THROMBOTIC THROMBOCYTOPENIC PURPURA, anemia, leukopenia, thrombocytopenia.
Metab: hyperglycemia, hyperlipidemia, hypertriglyceridemia.
MS: extremity pain.
Neuro: fatigue, weakness, dysgeusia, headache.
Resp: INTERSTITIAL LUNG DISEASE, PULMONARY HYPERTENSION, cough, dyspnea, pulmonary embolism.
Misc: HYPERSENSITIVITY REACTIONS (INCLUDING ANAPHYLAXIS AND ANGIOEDEMA), LYMPHOMA/SKIN CANCER (ZORTRESS), fever, infection (including activation of latent viral infections such as BK virus-associated nephropathy).
Advanced Renal Cell Carcinoma, Advanced PNET, Advanced NET, Advanced Hormone Receptor-Positive, HER2-Negative Breast Cancer, and Renal Angiomyolipoma with TSC (Afinitor)
- PO (Adults): 10 mg once daily until disease progression or unacceptable toxicity; Concurrent use of P-glycoprotein inhibitor and moderate CYP3A4 inhibitor 2.5 mg once daily until disease progression or unacceptable toxicity; Concurrent use of P-glycoprotein inducer and strong CYP3A4 inducer ↑dose in 5 mg increments up to 20 mg once daily; continue until disease progression or unacceptable toxicity.
Hepatic Impairment
- PO (Adults): Mild hepatic impairment (ChildPugh Class A) 7.5 mg once daily until disease progression or unacceptable toxicity; may ↓ to 5 mg once daily if not well tolerated; Moderate hepatic impairment (ChildPugh Class B) 5 mg once daily until disease progression or unacceptable toxicity; may ↓ to 2.5 mg once daily if not well tolerated; Severe hepatic impairment (ChildPugh Class C) 2.5 mg once daily until disease progression or unacceptable toxicity.
SEGA with TSC (Afinitor)
- PO (Adults and Children
1 yr): 4.5 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity; Concurrent use of P-glycoprotein inhibitor and moderate CYP3A4 inhibitor 2.25 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity; Concurrent use of P-glycoprotein inducer and strong CYP3A4 inducer 9 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity.
Hepatic Impairment
- PO (Adults and Children
1 yr): Severe hepatic impairment (ChildPugh Class C) 2.5 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity.
TSC Associated Partial-Onset Seizures (Afinitor)
- PO (Adults and Children
2 yr): 5 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity; Concurrent use of P-glycoprotein inhibitor and moderate CYP3A4 inhibitor 2.5 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity; Concurrent use of P-glycoprotein inducer and strong CYP3A4 inducer 10 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity.
Hepatic Impairment
- PO (Adults and Children
2 yr): Severe hepatic impairment (ChildPugh Class C) 2.5 mg/m2 once daily. Titrate, as needed, at 2-wk intervals to achieve recommended whole blood trough concentration. Continue until disease progression or unacceptable toxicity.
Kidney Transplantation (Zortress)
- PO (Adults): 0.75 mg twice daily (with reduced-dose cyclosporine); titrate to achieve recommended whole blood trough concentration.
Hepatic Impairment
- PO (Adults): Mild hepatic impairment (ChildPugh Class A) ↓daily dose by 33%; Moderate or severe hepatic impairment (ChildPugh Class B or C) ↓daily dose by 50%.
Liver Transplantation (Zortress)
- PO (Adults): 1 mg twice daily (with reduced-dose tacrolimus) (start
30 days post-transplant); titrate to achieve recommended whole blood trough concentration.
Hepatic Impairment
- PO (Adults): Mild hepatic impairment (ChildPugh Class A) ↓daily dose by 33%; Moderate or severe hepatic impairment (ChildPugh Class B or C) ↓daily dose by 50%.
Afinitor, Afinitor Disperz, Zortress
Therapeutic Classification: antineoplastics, Immunosuppressant agents
Pharmacologic Classification: kinase inhibitors