GRACE :: Lung Cancer
Denise Brock

ASCO 2017 – Lung Cancer – Sequencing Treatments for ALK+ Lung Cancer in a Crowded Field – Is there a place for Lorlatinib?

 

H. Jack West, MD 

Medical Director 

Thoracic Oncology Program Swedish Cancer Institute

President & CEO, GRACE 

 

Matthew Gubens, MD

Thoracic Oncologist

Thoracic Surgery and Oncology Clinic of the UCSF Helen Diller Family Comprehensive Cancer Center

Jyoti D. Patel, MD

Director Thoracic Oncology

University of Chicago Medicine


Drs. H. Jack West, Medical Director of the Thoracic Oncology Program at Swedish Cancer Institute in Seattle, Washington and President and CEO of GRACE, Matthew Gubens, Thoracic Oncologist at the Thoracic Surgery and Oncology Clinic of the UCSF Helen Diller Family Comprehensive Center in San Francisco, California, and Jyoti Patel, Director of Thoracic Oncology at University of Chicago Medicine gathered post meeting to discuss new information from ASCO 2017 regarding lung cancer.   In this roundtable video, the doctors discuss  Sequencing Treatments for ALK+ Lung Cancer in a Crowded Field – Is there a place for Lorlatinib? 


 

 


 Please feel free to offer comments and raise questions in our Discussion Forums.


GRACE would like to thank the following sponsors for their support of this program

  
                       

 


Denise Brock

ASCO 2017 – Lung Cancer – A Practice Change for ALK+ Lung Cancer Patients, Alecensa for First Line Treatment

 

H. Jack West, MD 

Medical Director 

Thoracic Oncology Program Swedish Cancer Institute

President & CEO, GRACE 

 

Matthew Gubens, MD

Thoracic Oncologist

Thoracic Surgery and Oncology Clinic of the UCSF Helen Diller Family Comprehensive Cancer Center

Jyoti D. Patel, MD

Director Thoracic Oncology

University of Chicago Medicine


Drs. H. Jack West, Medical Director of the Thoracic Oncology Program at Swedish Cancer Institute in Seattle, Washington and President and CEO of GRACE, Matthew Gubens, Thoracic Oncologist at the Thoracic Surgery and Oncology Clinic of the UCSF Helen Diller Family Comprehensive Center in San Francisco, California, and Jyoti Patel, Director of Thoracic Oncology at University of Chicago Medicine gathered post meeting to discuss new information from ASCO 2017 regarding lung cancer.   In this roundtable video, the doctors discuss A Practice Change for ALK+ Lung Cancer Patients, Alecensa for First Line Treatment.


 

 

 


 Please feel free to offer comments and raise questions in our Discussion Forums.


GRACE would like to thank the following sponsors for their support of this program

  
                       

 


Dr West

Why I Don’t Favor an Front-Loaded Approach for Most Advanced NSCLC Patients

To many, the recent FDA approval of a combination of chemotherapy and concurrent immunotherapy for the vast majority of patients with advanced (metastatic) non-squamous non-small cell lung cancer (NSCLC) probably seems like a great idea. This approval was based on the more favorable results for the combination of the IV immunotherapy agent Keytruda (pembrolizumab) every 3 weeks along with first line carboplatin and Alimta (pemetrexed) as a the chemo backbone, compared to the same chemotherapy alone, in a relatively small randomized trial of 123 patients, called KEYNOTE-021g. The “g” part refers to this actually being just one portion of a much larger trial comparing chemo to the same chemo with Keytruda. The other arms haven’t panned out as favorably.

Importantly, when we talk about the arm of patients getting chemo combined with immunotherapy, we aren’t talking about improving survival. Instead, we’re talking about prolonging the time before patients showed significant progression of their cancer on scans, which leads us to switch to a new treatment. This “progression-free survival”, or PFS, was the primary goal of the trial, though the gold standard of what we should really want from our treatments is improvement in how long patients live. There’s a bit of a favorable trend for that, but that’s all. There was also a significant improvement in the fraction of patients who show major shrinkage of their cancer when Keytruda is added to chemotherapy.

Still, even if survival isn’t improved, the results seem promising enough, so what’s not to like? Continue reading


Dr. Goldman

Why Carboplatin, Pemetrexed and Pembrolizumab Have Become My New Go-to Regimen for First-Line Non-Squamous NSCLC Treatment

Why carboplatin, pemetrexed and pembrolizumab have become my new go-to regimen for first-line non-squamous NSCLC treatment.

By Jonathan W. Goldman, MD


Metastatic non-small cell lung cancer (NSCLC) treatment has generally improved by optimizing care for “slices of the pie”—pieces of a pie chart representing all of lung cancer patients. Initially, mutation-based treatment led the way; 10% of lung cancers were identified as EGFR-mutant and treated with appropriate tyrosine kinase inhibitors. Subsequently, thinner and thinner slices of the population, each 1-7% of NSCLC patients, have been described and their cancers targeted. More recently, immunotherapy entered the picture, but again the greatest benefit of this therapy was limited to the 20-25% of patients that were PD-L1 positive. Despite all of these advances, we still had at least half of patients receiving more than 10-year-old chemotherapy as their initial treatment.

We now have preliminary evidence that this may be changing. Langer, et al reported in November 2016 (Lancet Oncology) the phase 2 KEYNOTE-021-G1 cohort of non-squamous NSCLC patients treated with the standard, carboplatin and Alimta (pemetrexed), alone or with the PD-1 inhibitor, Keytruda (pembrolizumab). Previous attempts to add to a platinum-doublet had generally provided marginal benefits at best (for example, with Avastin [bevacizumab] or Erbitux [cetuximab]). In contrast, the 021G trial suggested massive benefits, at least as far as response rate (RR) and progression free survival (PFS).

The 021G trial was a moderate-sized phase 2 trial with 123 patients split between the two arms. With Keytruda added to chemotherapy, the response rate increased from 29 to 55%, and importantly this benefit was irrespective of PD-L1 status (above or below a 1% PD-L1 cutoff). PFS was also significantly improved from 8.9 to 13.0 months with a hazard ratio of 0.53, which represents a decrease in the risk of cancer progression by almost half. Many of the trials leading to new drug approvals especially in an unselected cohort report hazard ratios of 0.75 or 0.80, so the benefit in 021G is staggering. The overall survival curves were overlapping at the time of the initial report, and if they suggested a possible survival benefit when updated at the 2017 ASCO Annual Meeting, there was still no statistically significant difference. This lack of a clear survival benefit is certainly at least in part due to crossover at the time of progression from the chemotherapy alone arm to get Keytruda or another immunotherapy (32% within the study and 74% if you count receiving an immunotherapy agent at any point, on or off the trial).

Furthermore, the toxicity associated with the addition of Keytruda was generally manageable, although moderate to severe toxicity (grade 3 or higher) was increased from 28 to 41%. Primarily, these were hematologic toxicities, including anemia and low blood counts, which oncologists are very comfortable managing. Stereotypical immunotherapy toxicities (such as pneumonitis, colitis or hepatitis) were reported at rates similar to previous experience with single-agent PD1 or PDL1 inhibitor therapy. Nevertheless, Keytruda was discontinued due to toxicities in 10% of patients, including in 1 patient with grade 3 pneumonitis, and doctors and patients will need to be on the lookout for such complications.

Many investigators and thought leaders were surprised when the FDA granted priority review for the front-line Keytruda-chemotherapy combination in January 2017. While lung cancer drug approvals had come from phase 2 or even phase 1 data before, that had consistently been for targeted therapy in areas of unmet need. However, just a few months later, on May 10, 2017 the FDA provided accelerated approval based on the RR and PFS benefits reported from KEYNOTE-021-G1. This does require verification in confirmatory trials including the KEYNOTE-189 trial, which mirrors the 021G trial but in a larger, phase 3 format.

This approval further shocked the lung cancer community. It certainly put standard treatment pathways and clinical trials, both open and in planning, in to disarray. However, from the FDA standpoint, how could you say no to a doubling in the response rate and a 50% decrease in the risk of progression? From the patient standpoint, there is now a novel treatment option that applies to the majority of patients. This is an event to celebrate.

There have been several lines of criticism of this combined treatment modality. The clearest is that if the overall survival curves remain overlapping, it may be advantageous to use chemotherapy and immunotherapy sequentially instead of concurrently. However, it seems likely that if the impressive RR and PFS advantages of concurrent therapy are real, they will translate into a survival advantage. It is also important to remember that patients can worsen rapidly during front-line therapy and never have the opportunity to benefit from a second-line treatment. If a survival advantage is not seen in the small phase 2 trial, it seems likely to be demonstrated in the larger phase 3 trial.

Another criticism of the concurrent approach is the associated medical and financial toxicity. Some presume that most patients will be benefiting from either the chemotherapy or the immunotherapy, and that by giving everything together, we are exposing patients to needless drug toxicity and society to unsustainable costs. One could respond, firstly, we do not know exactly how chemotherapy and immunotherapy may be interacting and there may be synergism beyond the efficacy of the individual parts. (Some hypothesize that tumor cell death via chemotherapy releases antigens that prime an immune response, which is then amplified into an immune effector response by immunotherapy.) Secondly, the toxicity profile as seen in the 021G trial shows that concurrent administration of chemotherapy and PD-1 blockade is tolerable for most patients. Thirdly, we have used expensive triplet regimens before (the best example being carboplatin, Alimta and Avastin) but at least with the 021G triplet there is evidence for major benefit.

In the end, we are all awaiting the confirmatory phase 3 trials of chemoimmunotherapy across many of the PD1 and PDL1 inhibitor drug-development pipelines. In the meantime, I applaud the FDA’s provisional approval and I am happy to be able to provide this as an option for my patients. I have heard some doctors state that they will reserve the triplet for patients that “need a response.” I have never met a patient who did not feel that he or she needed a response, and therefore the 021G triplet is my new go-to first-line regimen for non-squamous NSCLC patients without targetable mutations.


Dr. Goldman joins GRACE from UCLA Medical Center in Santa Monica, where he specializes in Hematology and Oncology.  He serves as Assistant Professor of UCLA Hematology & Oncology, Associate Director of Drug Development and Director of Clinical Trials in Thoracic Oncology.  


 

 

 

 


Denise Brock

Lung Cancer Video Library – Liquid Biopsies for Broad Next Generation Sequencing Testing

 

GRACE Cancer Video Library - Lung

 

 

We welcome Dr. Luis Raez, MD FACP FCCP, Chief of Hematology/Oncology and Medical Director at Memorial Cancer Institute, and Clinical Associate Professor of Medicine at Florida International University with 2017 updates to our Lung Cancer Video Library.  In this recent video for GRACE, Dr. Raez discusses Liquid Biopsies for Broad Next Generation Sequencing Testing.


 

 

 

How Did You Like This Video?

Please feel free to offer comments and raise questions in our Discussion Forums.


 

TRANSCRIPTS 
Click to download  (coming soon)
 

 Dr. Luis Raez, MD FACP FCCP

Chief of Hematology/Oncology and Medical Director, Memorial Cancer Institute
Clinical Associate Professor of Medicine, Florida International University
 

 

 


  


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