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Ramalingam Reflects on Recent Advances in SCLC

Angelica Welch
Published: Monday, Jul 16, 2018

Suresh S. Ramalingam, MD
Suresh S. Ramalingam, MD
The small cell lung cancer (SCLC) landscape is experiencing a wave of new clinical trials, many of which are proving the activity of novel targeted agents and immunotherapy. Suresh A. Ramalingam, MD, explained that the field is anxiously awaiting phase III data to confirm the promise that these agents have shown so far.

, Ramalingam, deputy director of Winship Cancer Institute of Emory University, reflected on recent data and what is on the horizon for SCLC.

OncLive: What are your thoughts on the phase II data with lurbinectedin?

Ramalingam: It was a small study of about 60 patients, but it showed activity in both the platinum-sensitive and platinum-refractory patients. The median PFS was very promising. I came out of [the 2018 ASCO Annual Meeting] thinking it could be something helpful for our patients. There is a phase III clinical trial with lurbinectedin that is currently underway, and this only makes it more exciting to see what the results of that phase III trial will be. [The ATLANTIS study] is a randomized phase III trial that has been ongoing for about 1.5 years.

In light of the results presented at the 2018 ASCO Annual Meeting, do you have any further thoughts on Rova-T?

The presentation at the 2018 ASCO Annual Meeting showed a low response rate with Rova-T, even in the biomarker-positive patients. That is lower than the 40% response rate reported from the first cohort of patients. In the broader experience, it looks like the drug may not be as active as we had previously thought.

There are also concerns about some of the adverse events (AEs) that we have seen, including photosensitivity and fusions. Based on all of these things, Rova-T, at this point, would not be something that I would anticipate entering clinical practice in 2018. Hopefully, ongoing studies will further stratify the efficacy of this drug, and [address] how to manage the AEs.

Atezolizumab is showing promise. Can you share your insight on that agent in SCLC?

We just learned that in SCLC, a randomized phase III trial of chemotherapy with or without atezolizumab was positive for PFS and OS through a press release. The press release that Genentech put out indicated that the trial met its primary endpoint of improving efficacy. We eagerly anticipate the results to be reported at one of the upcoming meetings. If the results are clinically meaningful, atezolizumab is going to be the first immune checkpoint inhibitor to enter the SCLC space. It will be in combination with chemotherapy in the frontline setting.

This has gotten a lot of people excited, including myself. For the first time, we have seen a survival trial in the frontline setting be positive for a survival endpoint-driven trial.

Are there any other immunotherapy agents showing promise in SCLC?

In SCLC, the nivolumab (Opdivo) plus ipilimumab (Yervoy) combination was shown to be associated with response rates of approximately 25%. That is now in the NCCN guidelines for second-line therapy. There are ongoing randomized trials with that combination. At this point, we are awaiting the results of those trials, and we have not seen any data from these trials yet.


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