GRACE :: Lung Cancer

anti-PD1

Immunotherapy Opdivo (Nivolumab) Approved for Chemo-Pretreated Advanced Squamous NSCLC

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It was a big day for the lung cancer world. After seeing the tantalizing promise of immunotherapy for lung cancer over the past 3 years, but outside of the range of routine clinical practice, the anti-PD1 antibody,  immune checkpoint inhibitor Opdivo (nivolumab) was approved by the FDA today for previously treated patients with advanced squamous NSCLC. This was just days after it was formally available for consideration and was based on the clear benefit demonstrated in the pivotal CHECKMATE 017 trial.

This study enrolled 272 patients with advanced squamous NSCLC who had previously received platinum-based doublet chemotherapy, and patients could have also received prior Tarceva (erlotinib), but not have received prior Taxotere (docetaxel). Importantly, PD-L1 expression on their tumors was NOT required, so there was no exclusion of patients based on this.  Participating patients were randomized to receive standard Taxotere IV every 3 weeks or Opdivo IV every 2 weeks.  The primary endpoint was overall survival, and as reported preliminarily in a press release in January, there was a significant survival benefit from Opdivo. Today we learned more about the trial, for the first time: specifically, there was a more than 3 month improvement in median overall survival (9.2 vs. 6.0 months, 41% improvement, p = 0.00025). 

This is clearly the beginning of a new chapter in “immuno-oncology”.  Today marks the first approval of an immunotherapy for lung cancer, but we still await approval for the 75-80% of lung cancer patients who have non-squamous NSCLC. This larger population was the subject of a separate CHECKMATE 057, which has completed enrollment but is still ongoing, with results expected to be reported at least in preliminary form in the coming year. In the meantime, availability of commercial Opdivo in lung cancer is likely to be limited to squamous NSCLC, and only patients who have received prior first line doublet chemotherapy. Though there will certainly be interest among patients and their oncologists in obtaining it for broader patient populations and potentially first line treatment before chemo, I suspect that the high cost of the agent and notoriety of the agent will limit payer coverage to the precise population enumerated in the FDA decision.  In addition, pent up demand for this agent may also limit access even among the patients for whom it is approved.

One challenge will be the very important SWOG 1400 “LUNG-MAP”/”master protocol” for patients with advanced squamous NSCLC who are candidates for second line therapy. This trial, being conducted throughout North America, has patients submit tissue for genomic testing and then, depending on whether specific markers are detected, randomizes them to standard Taxotere chemotherapy or an investigational arm of chemo plus targeted therapy; those without an identifiable marker are randomized between Taxotere and immunotherapy. However, with Opdivo now shown to be significantly superior to Taxotere, it’s hard to envision any patient wanting to enroll on a trial that bypasses immunotherapy for many patients and gives a 50% chance of getting Taxotere alone.  This trial will need to be overhauled, perhaps looking at targeted therapy additions to Opdivo instead of Taxotere.

But the approval opens up far more opportunities than it closes. It’s now the end of the beginning, a big step and a day to congratulate the lung cancer community and appreciate the rapid handling of these important developments by the FDA. 

 


5 Key Points on Immune Checkpoint Inhibitors for Lung Cancer: Game Changer or Just Leveling Up?

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Just last week, I ranked the development of immunotherapies as the leading development in lung cancer in 2013. I don’t consider 2013 to be the clear turning point for immunotherapies in lung cancer: they have been the subject of interest and research for many years, and ASCO 2012 really marks their breakout from niche idea to more widespread credibility. But if 2012 was the real launchpad, 2013 saw the rocket really take off. The question is where is it really going?

I’ve had the opportunity to put more than a dozen patients on immune checkpoint inhibitors (anti-PD1, anti-PDL1) over the past 12-18 months, and in that time I’ve been able to combine my real life clinical experience with more data from other agents. At this point, I’d like to offer some preliminary projections on what we should expect from immunotherapies. 

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Dr. Bob Doebele on the Most Promising Upcoming New Targeted Agents and Molecular Pathways for Lung Cancer Treatment

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Dr. Bob Doebele from the University of Colorado, provides his view on the targeted therapy approaches most likely to become clinically useful in lung cancer over the next several years.


How should we integrate new immunotherapies into treatment strategies for lung cancer?

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Drs. Jack West, Mary Pinder, and Nate Pennell review various ways in which emerging immunotherapies could be effectively incorporated into our treatment strategies for lung cancer, potentially adding to or replacing current options.


Can we harness our immune system to fight NSCLC?

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Drs. Mary Pinder, Nate Pennell, and Jack West discuss promising work on immune checkpoint inhibitors such as MPPL-3280A, an anti-PDL1 immune-based therapy, and anti-PD1 therapy nivolumab, in advanced NSCLC.

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