Reference Detail

Ref Type

Journal Article

PMID

(18223225)

Authors

Weiner LM, Belldegrun AS, Crawford J, Tolcher AW, Lockbaum P, Arends RH, Navale L, Amado RG, Schwab G, Figlin RA

Title

Dose and schedule study of panitumumab monotherapy in patients with advanced solid malignancies.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research	14	2	2008 Jan 15	502-8	Clin Cancer Res

URL

Abstract Text

This phase 1 study evaluated the safety, pharmacokinetics, and activity of panitumumab, a fully human, IgG2 monoclonal antibody that targets the epidermal growth factor receptor in patients with previously treated epidermal growth factor receptor-expressing advanced solid tumors.Sequential cohorts were enrolled to receive four i.v. infusions of panitumumab monotherapy at various doses and schedules. Safety was continuously monitored. Serum samples for pharmacokinetic, immunogenicity, and chemistry assessments were drawn at preset intervals. Tumor response was assessed at week 8.Ninety-six patients received panitumumab. Median (range) age was 61 years (32-79 years), and 72 (75%) patients were male. Tumor types were 41% colorectal cancer, 22% prostate, 16% renal, 15% non-small cell lung, 3% pancreatic, 3% esophageal/gastroesophageal, and 1% anal. The overall incidence of grade 3 or 4 adverse events was 32% and 7%, respectively. The incidence of skin-related toxicities was dose dependent. No maximum tolerated dose was reached. No human anti-panitumumab antibodies were detected. No investigator-determined panitumumab infusion-related reactions were reported. Serum panitumumab concentrations were similar in the 2.5 mg/kg weekly, 6.0 mg/kg every 2 weeks, and 9.0 mg/kg every 3 weeks dose cohorts. Five of 39 patients (13%) with colorectal cancer had a confirmed partial response, and 9 of 39 patients (23%) with colorectal cancer had stable disease.Panitumumab was well tolerated with comparable exposure and safety profiles for the weekly, every 2 weeks, and every 3 weeks administration schedules. Rash and dry skin occurred more frequently in the dose cohorts receiving > or =2.5 mg/kg weekly dose. Panitumumab has single-agent antitumor activity, most notably in patients with advanced colorectal cancer.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References