The efficacy and safety of the capecitabine/temozolomide (CAPTEM) regimen in the treatment of well-differentiated neuroendocrine tumors with liver metastasis after failure of previous therapy: Columbia University Medical Center experience.

308 Background: We have observed efficacy and tolerability of the CAPTEM regimen in pNET. We conducted a retrospective review of patients with liver metastasis from any NET, including carcinoid, who were treated with this regimen at our institution between 2002-2008. Methods: We identified patients with neuroendocrine tumors who demonstrated progressive liver metastasis while on treatment with long-acting octreotide (up to 60mg/month) and were then treated with CAPTEM as per our institutional protocol. Patients received capecitabine for 14 days at 1000mg PO bid with temozolomide at 150 or 200mg/m2 in bid dosing on days 10-14 of each 28 day cycle. All patients had contrast enhanced CT or MRI, response was assessed by a radiologist utilizing RECIST 1.0 criteria. Results: We identified 18 patients (50% female, median age- 55), 9 had pNET (2 functional, 7 non-functional), 2 had MEN1, 4 had carcinoid (1 functional), 2 with gastrinoma and 1 with glucagonoma. All patients had Ki-67 <10%, 11 patients (61%) had re...