Sunitinib

In this article, we will discuss Sunitinib (Dosage Overview). So, let’s get started.

Indications

Gastrointestinal Stromal Tumor (GIST)
Sunitinib is indicated for the treatment of gastrointestinal stromal tumor after disease progression on or intolerance to imatinib mesylate.

Advanced Renal Cell Carcinoma (RCC)
Sunitinib is indicated for the treatment of advanced renal cell carcinoma.

Advanced Pancreatic Neuroendocrine Tumors (pNET)
Sunitinib is indicated for the treatment of progressive, well-differentiated pancreatic neuroendocrine tumors in patients with unresectable locally advanced or metastatic disease.

Dosage

Recommended Dose for GIST and RCC
The recommended dose of Sunitinib for gastrointestinal stromal tumor (GIST) and advanced renal cell carcinoma (RCC) is one 50 mg oral dose taken once daily, on a schedule of 4 weeks on treatment followed by 2 weeks off (Schedule 4/2). Sunitinib may be taken with or without food.

Recommended Dose for pNET
The recommended dose of Sunitinib for pancreatic neuroendocrine tumors (pNET) is 37.5 mg taken orally once daily continuously without a scheduled off-treatment period. Sunitinib may be taken with or without food.

Dose Modification

Dose interruption and/or dose modification in 12.5 mg increments or decrements is recommended based on
individual safety and tolerability. The maximum dose administered in the Phase 3 pNET study was 50 mg daily.

Strong CYP3A4 inhibitors such as ketoconazole may increase sunitinib plasma concentrations. Selection of
an alternate concomitant medication with no or minimal enzyme inhibition potential is recommended. A dose reduction for Sunitinib to a minimum of 37.5 mg (GIST and RCC) or 25 mg (pNET) daily should be considered if SUTENT must be co-administered with a strong CYP3A4 inhibitor.

CYP3A4 inducers such as rifampin may decrease sunitinib plasma concentrations. Selection of an alternate concomitant medication with no or minimal enzyme induction potential is recommended. A dose increase for Sunitinib to a maximum of 87.5 mg (GIST and RCC) or 62.5 mg (pNET) daily should be considered if Sunitinib must be co-administered with a CYP3A4 inducer. If dose is increased, the patient should be monitored carefully for toxicity.

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