Advertisement


Tony S.K. Mok, MD, on NSCLC: Review of Recent Data From the SUNRISE and ORIENT-31 Trials

ESMO Congress 2022

Advertisement

Tony S.K. Mok, MD, of The Chinese University of Hong Kong, discusses two late-breaking abstracts presented at ESMO 2022: the phase II SUNRISE study, which compared sintilimab plus anlotinib vs platinum-based chemotherapy as first-line therapy in patients with metastatic non–small cell lung cancer (NSCLC); and the ORIENT-31 trial, which compared sintilimab with or without IBI305 (a bevacizumab biosimilar) plus chemotherapy in patients with EGFR-mutated nonsquamous NSCLC who experienced disease progression on EGFR tyrosine kinase inhibitors.



Transcript

Disclaimer: This video transcript has not been proofread or edited and may contain errors.
There are two abstracts from ESMO 2022 in Paris that I would like to share with you. The first one is ORIENT-31. This is actually a three-arm study. The first arm is sintilimab, which is an anti-PDL1 therapy together with a bevacizumab biosimilar with chemotherapy as arm A, arm B is actually chemotherapy with sintilimab only, and the third arm is the chemotherapy. Arm A and arm C comparison was previously reported, being positive and with a significant hazard ratio of 0.46. This time, at ESMO 2022, they reported the difference between arm B and arm C. They actually had an improvement of the median progression-free survival, about 5.5 months in the study arm and about 4.3 in the control arm. Hazard ratio is 0.72, statistically significant. But the question to me is how significant is significant? Well, first of all, EGFR mutation positive lung cancer patients, they actually don't have a good tumor microenvironment, so the single agent immunotherapy response rate on patients with EGFR mutation is actually about 10 to 12%. The combination may add onto the value, but then the question is, would it be the better approach or should we use another approach? So to that, there are data on the combination of the antiangiogenesis, but bevacizumab together with immunotherapy and also the use of the anti-PDL1 therapy. This one does actually have biological senses because VGF potentially can change the tumor microenvironment. So under that there are data from IMpower150, which is a subgroup analysis, not large, but then the four drug regimen is definitely better than the chemo with the bevacizumab alone. And also from the ORIENT study, the degree of improvement, the response rate, is 40%, which is actually higher. In my understanding, although sintilimab plus the chemotherapy is a positive study, but I don't think it's ready for clinical application. I will certainly wait for future randomized study, including Checkmate 722, which is chemo nivolumab versus chemo in EGFR-positive patients who failed the TKI, and also the KEYNOTE-789, which is the patient with, again, failed TKI randomized to chemo plus pembrolizumab versus chemotherapy. Until then, I actually would not just use routinely chemo plus IO, but then as a [inaudible 00:02:51], I may still consider the use of IMpower150. That is the first abstract on patients with EGFR mutation positive disease, how we may apply immunotherapy. Then the second abstract is called SUNRISE. This one is actually adding anlotinib, which is an oral VEGFR inhibitor to sintilimab, which is an anti-PDL1. The question is that a combination of antiangiogenesis and chemotherapy in patient without a driver mutation. This is a relatively small, randomized phase II study, about 98 patients were enrolled, the primary end point of response rate, looking at the control arm of chemotherapy at 25% versus the fact that the combination will be at 50%. Let's ask the question, is this the right study to do? Although the outcome is positive, they reported response rate of sintilimab plus anlotinib to be 50%, which had reached their primary goal. But then, the control arm is wrong. This study started in 2019. At that time we already divided patient into PDL1 over 50%, 1% to 49%, and less than 1%. Patient with over 50% of PDL1 expression, the control arm would be single agent IO, not chemotherapy. Patient with the PDL1, 1% to 49%, the control arm should be chemo plus IO and not chemotherapy alone. In this particular study, although as a group, they tend to show that there is a response rate of 50%, but then there's no meaning compared to a control arm that's no longer relevant anymore. In a sense, I'm afraid that this study does not add on any information to my daily practice.

Related Videos

Breast Cancer

Laurence Buisseret, MD, PhD, on Triple-Negative Breast Cancer: Chemoimmunotherapy With or Without an Anti-CD73 Antibody

Laurence Buisseret, MD, PhD, of Belgium’s Institut Jules Bordet, discusses phase II results from the SYNERGY trial, which tested first-line chemoimmunotherapy of durvalumab, paclitaxel, and carboplatin with or without the anti-CD73 antibody oleclumab in patients with advanced or metastatic triple-negative breast cancer. Although adding oleclumab to durvalumab with chemoimmunotherapy did not increase the clinical benefit rate at week 24, research is ongoing to better understand the mechanisms of response and resistance to this study combination (Abstract LBA17).

Breast Cancer

Matthew P. Goetz, MD, on Breast Cancer: Interim Survival Results With Abemaciclib Plus a Nonsteroidal Aromatase Inhibitor

Matthew P. Goetz, MD, of Mayo Clinic, discusses recent data from the MONARCH 3 trial of patients with advanced hormone receptor–positive, HER2-negative breast cancer. The study, a second interim analysis, showed that longer overall survival was observed in both the intention-to-treat group as well as in the subgroup with visceral disease. However, neither met the threshold for statistical significance, and further analyses are planned when more data can be reported. (Abstract LBA15).

Pancreatic Cancer

Christelle de la Fouchardiere, MD, on Pancreatic Ductal Adenocarcinoma: Phase III Trial Results With Gemcitabine Plus Paclitaxel

Christelle de la Fouchardiere, MD, of France’s Centre Léon Bérard, discusses phase III findings from the PRODIGE 65–UCGI 36–GEMPAX UNICANCER study, which evaluated whether the combination of gemcitabine and paclitaxel improves overall survival compared with gemcitabine alone in patients with metastatic pancreatic ductal adenocarcinoma after FOLFIRINOX failure or intolerance (Abstract LBA60).

Skin Cancer
Immunotherapy

Georgina V. Long, MD, PhD, on Melanoma: Findings on Circulating Tumor DNA, Disease Recurrence, and Immunotherapy

Georgina V. Long, MD, PhD, of the Melanoma Institute Australia, discusses results from the CheckMate 915 trial, an analysis of the pretreatment circulating tumor DNA, along with other clinical and translational baseline factors, and their association with disease recurrence in patients with stage IIIB–D/IV melanoma treated with adjuvant immunotherapy (Abstract 788O).

Skin Cancer

John B.A.G. Haanen, MD, PhD, on Melanoma: Phase III Data on Treatment With Tumor-Infiltrating Lymphocytes vs Ipilimumab

John B.A.G. Haanen, MD, PhD, of The Netherlands Cancer Institute, discusses recent phase III findings, which show that tumor-infiltrating lymphocytes (TILs) improve progression-free survival compared with ipilimumab by 50% in patients with advanced melanoma after not responding to anti–PD-1 treatment. Around 50% of TIL-treated patients had a response, and 20% had a complete response (Abstract LBA3).

Advertisement

Advertisement




Advertisement