Title
Phase II, open-label study of pazopanib or lapatinib monotherapy compared with pazopanib plus lapatinib combination therapy in patients with advanced and recurrent cervical cancer
Date Issued
01 August 2010
Access level
metadata only access
Resource Type
journal article
Author(s)
Monk B.J.
Zarba J.J.
Oaknin A.
Tarpin C.
Termrungruanglert W.
Alber J.A.
Ding J.
Stutts M.W.
Pandite L.N.
Abstract
Purpose: Pazopanib and lapatinib are tyrosine kinase inhibitors that target vascular endothelial growth factor receptor, platelet-derived growth factor receptor, and c-Kit or epidermal growth factor receptor (EGFR) and human epidermal growth factor receptor 2 (HER2/neu), respectively. In cervical cancer, EGFR and HER2/neu overexpression and high microvascular density correlate with survival. Patients and Methods: Patients with measurable stage IVB persistent/recurrent cervical carcinoma not amenable to curative therapy and at least one prior regimen in the metastatic setting were randomly assigned in a ratio of 1:1:1 to pazopanib at 800 mg once daily, lapatinib at 1,500 mg once daily, or lapatinib plus pazopanib combination therapy (lapatinib at 1,000 mg plus pazopanib at 400 mg once daily or lapatinib at 1,500 mg plus pazopanib at 800 mg once daily). Therapy continued until progression or withdrawal because of adverse events (AEs). Primary end point was progression-free survival (PFS), and secondary end points were overall survival (OS), response rate (RR), and safety. The futility boundary was crossed at the planned interim analysis for combination therapy compared with lapatinib therapy, and the combination was discontinued. Results: Of 230 patients enrolled, 152 were randomly assigned to the monotherapy arms: pazopanib (n = 74) or lapatinib (n = 78). Most patients (62%) had recurrent cancer. Pazopanib improved PFS (hazard ratio [HR], 0.66; 90% CI, 0.48 to 0.91; P = .013) and OS (HR, 0.67; 90% CI, 0.46 to 0.99; P = .045). Median OS was 50.7 weeks and 39.1 weeks and RRs were 9% and 5% for pazopanib and lapatinib, respectively. The only grade 3 AE > 10% was diarrhea (11% pazopanib and 13% lapatinib). Grade 4 AEs were 9% (lapatinib) and 12% (pazopanib). Conclusion: This study confirms the activity of antiangiogenesis agents in advanced and recurrent cervical cancer and demonstrates the benefit of pazopanib based on the prolonged PFS and favorable toxicity profile. © 2010 by American Society of Clinical Oncology.
Start page
3562
End page
3569
Volume
28
Issue
22
Language
English
OCDE Knowledge area
Oncología
Scopus EID
2-s2.0-77955874058
PubMed ID
Source
Journal of Clinical Oncology
ISSN of the container
0732183X
Sources of information:
Directorio de Producción Científica
Scopus