Samsung medical Center
Seoul, South Korea
NCT Number: NCT01538238
Recent advances in understanding the biology and genetics of renal cell carcinoma (RCC) have led to major therapeutic implications. Von Hippel-Lindau (VHL) gene inactivation, present in the majority of sporadic forms of RCC, leads to a defective VHL protein, followed by an active transcription of hypoxia-inducible genes, including vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), c-kit, and others. However, the concept of VHL inactivation in RCC and the subsequent malignant phenotype is almost exclusively seen in patients with clear cell histology.
The data about efficacy of VEGF receptor inhibitors for non-clear cell RCC (NCRCC) is rare until now. Recently, however, sunitinib and sorafenib showed its worth for NCRCC in extended access programs.1-3 Although it is not certain, the underlying mechanism of their action might lie in that papillary, chromophobe, and sarcomatoid type overexpress c-kit, which is also a target of both drugs and could therefore provide a therapeutic target for non-clear cell subtypes.4-7 Pazopanib is also a potent and selective, orally available, small molecule inhibitor of VEGFR-1,-2, and -3, PDGF-α, PDGF-β, and c-kit tyrosine kinases. It has been validated and licensed for advanced clear cell RCC (CCRCC).8 However, there is very few data about its efficacy for NCRCC.
In this study, we try to evaluate the efficacy of pazopanib in metastatic NCRCC.
Looking for future studies?
Notify Me19 year and older
All sexes
Interventional
Phase 2
Seoul, South Korea
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Include papillary type, chromophobe type, unclassified cell types; Exclude collecting duct and sarcomatoid type. (including sarcomatoid type or collecting duct type should be less than 5% in total cancer tumor)
Exclusion criteria
① radiation therapy, surgery or tumor embolization within 14 days prior to the first dose of pazopanib / RFA or cryoablation within 14 days prior to the first dose of pazopanib OR
② Prior treatment history with angiogenesis inhibitors such as sunitinib, sorafenib, bevacizumab is not permitted (prior MET inhibitor or c-kit inhibitor are also not permitted)
③ Any ongoing toxicity from prior anti-cancer therapy that is >Grade 1 and/or that is progressing in severity, except alopecia.
(Active peptic ulcer disease, uncontrolled nausea, vomiting, diarrhea, malabsorption syndrome or resection of the small bowel, history of stomy, abdominal fistula, gastrointestinal perforation, or intra abdominal abscess within 28days prior to enrollment.)
pazopanib 800mg qd until progression or unacceptable toxicity
Time frame: 2years
Time frame: 2years
Time frame: 2years
Time frame: 2years
Time frame: 2years
c-kit protein expression,the relationship between efficacy and tumoral fibroblast growth factor receptor 1 gene amplification (FISH), the relationship between efficacy and MET mutation in papillary carcinoma, the relationship between efficacy and microvessel density and/or VEGF-R2 expression in tumor by immunohistochemistry
Samsung Medical Center
Other
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.