A systematic review of predictive and prognostic biomarkers for VEGF-targeted therapy in renal cell carcinoma

Tomohiro Funakoshi, Chung Han Lee, James J. Hsieh

Research output: Contribution to journalReview articlepeer-review

56 Scopus citations

Abstract

Background: Vascular endothelial growth factor (VEGF)-targeted therapy is the currently standard treatment for advanced and metastatic renal cell carcinoma (RCC). Multiple candidate predictive and prognostic biomarkers have been evaluated. We performed a systematic review and graded the available evidence on the biomarkers for VEGF-targeted therapy in RCC. Methods: We conducted an independent review of PubMed and ASCO databases up to August 2013. Studies were included if biomarkers obtained from metastatic clear-cell RCC patients treated with the FDA-approved VEGF-targeted therapy were assessed for their correlation with clinical outcomes. We graded the studies and determined the Level-of-evidence for each biomarker using a previously published framework. Results: A total of 50 articles were selected for this review. Seven studies assessed the predictive value of biomarkers using the archived specimens from randomized controlled trials. Five predictive biomarkers, such as VEGF, interleukin (IL)-6, hepatocyte growth factor (HGF), osteopontin, single nucleotide polymorphisms in IL-8, satisfied Level II evidence. IL-6 is the most corroborated predictive biomarker based on its consistent predictive value in two different trials. The prognostic value of biomarkers was assessed in 48 studies using the archived specimens from clinical trials, prospective and retrospective observational registries. Three biomarkers, including IL-8, HGF and osteopontin, satisfied Level I evidence for PFS. Conclusion: Though several promising predictive biomarkers for VEGF-targeted therapy have been found, none of them has satisfied the determination of Level I evidence. A more focused development of biomarkers with prospective assessment in clinical trials and clear intent of use in clinical practice is needed.

Original languageEnglish
Pages (from-to)533-547
Number of pages15
JournalCancer Treatment Reviews
Volume40
Issue number4
DOIs
StatePublished - May 1 2014

Keywords

  • Biomarkers
  • Metastatic renal cell carcinoma
  • Systematic review
  • Vascular endothelial growth factor-targeted therapy

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