Rollover for Study OX4218s, A P2 Study to Investigate Safety and Activity of Fosbretabulin Tromethamine in the Treatment of Well-Differentiated, Low-to-Intermediate-Grade Unresectable, Recurrent or Metastatic PNET or GI-NET With Elevated Biomarkers

Subjects enrolled in the PNET/GI-NET study OX4218s received weekly dosing with fosbretabulin for up to 3 cycles or approximately 9 weeks. Subjects achieving a clinical response with a biomarker reduction or symptom response based on investigator assessment are eligible to enroll in this rollover study (protocol OX4219s). Subjects will receive fosbretabulin every three weeks for a maximum of approximately one year or until disease progression, unacceptable toxicity, consent withdrawal, protocol-noncompliance, or the investigator feels that it is no longer in the subject's best interest to continue therapy.