The molecular diagnostics company Rosetta Genomics has received permission to patent their Rosetta Lung Cancer Test. The test analyzes lung tumor tissue and distinguishes squamous cell carcinoma (SCC) from other types of non-small cell lung cancer (NSCLC). Clearly identifying a patient’s cancer subtype is becoming increasingly important for choosing an optimal treatment plan, thanks to the increasing role of targeted therapies and the growing understanding of how drug effects can differ among various cancer subtypes. For example, pemetrexed (Alimta) and bevacizumab (Avastin) benefit many NSCLC patients, but are not recommended for those with SCC. The patent allowance will permit Rosetta to develop their test for use in patients.
AVAPERL evaluated the safety and efficacy of bevacizumab with or without pemetrexed as continuation maintenance treatment. In an unselected population of patients with nonsquamous NSCLC who had achieved disease control with platinum-based chemotherapy plus bevacizumab, bevacizumab plus pemetrexed maintenance was associated with a significant PFS benefit compared with bevacizumab alone. The combination was well tolerated.
Both pemetrexed (Alimta) plus carboplatin (Paraplatin) and Paraplatin plus paclitaxel (Taxol/Abraxane) plus bevacizumab (Avastin) are effective chemotherapy regimens against non-small cell lung cancer (NSCLC). However, until recently, the safety and efficacy of the two regimens had not been directly compared. To evaluate whether one regimen was superior, a phase III clinical trial determined how long patients with advanced non-squamous NSCLC remained free of either cancer progression or severe toxic side effects when treated with either of the two regimens. While patients receiving the Alimta plus Paraplatin regimen tended to have slightly longer relapse- and toxicity-free periods than those given Paraplatin plus Taxol/Abraxane plus Avastin, the difference was not very pronounced and could have happened by chance. The two regimens also did not differ regarding overall time until cancer progression, response rate and overall survival time.
A small phase I study combining the immune checkpoint antibody ipilimumab with the angiogenesis inhibitor antibody bevacizumab showed promising results in advanced melanoma patients in 2011. Now, researchers are continuing to study the combination of immunotherapy and anti-angiogenic agents to understand which patients could best benefit from such a combination. Continue reading…
“A CTEP-sponsored phase II trial was performed to evaluate safety and clinical activity of combination therapy with CCI-779 (temsirolimus) and bevacizumab in patients with advanced melanoma…”
Variations in two genes called CXCR-2 and PAR-1 may predict how a person with non-small cell lung cancer (NSCLC) will fare. A study of over 200 NSCLC patients found that those with certain versions of the genes were likely to experience faster disease progression and shorter survival, especially if patients had squamous cell carcinoma (SCC). Both genes are involved in tumor angiogenesis, that is, the growth of new blood vessels that enable tumors to expand. In the future, testing for these high-risk gene variants may help identify good candidates for anti-angiogenesis treatments like bevacizumab (Avastin).