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A phase I, dose-escalation study of TB-403, a monoclonal antibody directed against PlGF, in patients with advanced solid tumours.


ABSTRACT: TB-403 (RO 5323441), a humanised monoclonal antibody, is a novel antiangiogenesis agent directed against placental growth factor. The safety, pharmacokinetics (PK), and antitumour activity of TB-403 were assessed in a phase I, dose-escalation study in patients with advanced solid tumours.Patients in sequential dose groups received either weekly doses of 1.25, 5.0, or 10 mg kg(-1) or doses of 20 or 30 mg kg(-1) every third week.Twenty-three patients were enrolled and received TB-403. The most common adverse events (AEs) were fatigue, constipation, pyrexia, dyspnoea, and nausea. One serious AE, a lung embolus in a patient with non-small cell lung cancer treated with 10 mg kg(-1) weekly, was deemed possibly related to TB-403. No dose-limiting toxicities were observed, and a maximum-tolerated dose was not reached. The PK parameters were dose linear and the terminal half-life values ranged from 9 to 14 days. Six patients exhibited stable disease for at least 8 weeks. Two patients, (oesophageal squamous cell carcinoma and pancreatic adenocarcinoma) both treated with 5 mg kg(-1) weekly, remained stable for 12 months.TB-403 treatment in this patient population is well tolerated, with a safety profile distinct from that of vascular endothelial growth factor-axis inhibitors.

SUBMITTER: Lassen U 

PROVIDER: S-EPMC3322959 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature

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A phase I, dose-escalation study of TB-403, a monoclonal antibody directed against PlGF, in patients with advanced solid tumours.

Lassen U U   Nielsen D L DL   Sørensen M M   Winstedt L L   Niskanen T T   Stenberg Y Y   Pakola S S   Stassen J-M JM   Glazer S S  

British journal of cancer 20120124 4


<h4>Background</h4>TB-403 (RO 5323441), a humanised monoclonal antibody, is a novel antiangiogenesis agent directed against placental growth factor. The safety, pharmacokinetics (PK), and antitumour activity of TB-403 were assessed in a phase I, dose-escalation study in patients with advanced solid tumours.<h4>Methods</h4>Patients in sequential dose groups received either weekly doses of 1.25, 5.0, or 10 mg kg(-1) or doses of 20 or 30 mg kg(-1) every third week.<h4>Results</h4>Twenty-three patie  ...[more]

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