Dr. Joshua Reuss joints that podcast to discuss the latest changes to the living guideline on stage IV NSCLC with driver alterations. He discusses the new evidence for NSCLC with EGFR mutations and NRG1 fusions and how this impacts the latest recommendations from the panel. He shares ongoing research that the panel will review in the future for further updates to this living guideline, and puts the updated recommendations into context for clinicians treating patients with stage IV NSCLC.

Read the full living guideline update “Therapy for Stage IV Non-Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2025.1” at www.asco.org/thoracic-cancer-guidelines

TRANSCRIPT

This guideline, clinical tools, and resources are available at www.asco.org/thoracic-cancer-guidelines. Read the full text of the guideline and review authors’ disclosures of potential conflicts of interest in the Journal of Clinical Oncology, https://ascopubs.org/doi/10.1200/JCO-25-01061

Brittany Harvey: Hello and welcome to the ASCO Guidelines Podcast, one of ASCO's podcasts delivering timely information to keep you up to date on the latest changes, challenges, and advances in oncology. You can find all the shows, including this one, at asco.org/podcasts.

My name is Brittany Harvey, and today I'm interviewing Dr. Joshua Reuss from Georgetown University, co-chair on "Therapy for Stage IV Non–Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2025.1."

It's great to have you here today, Dr. Reuss.

Dr. Joshua Reuss: Thank you. Happy to be here.

Brittany Harvey: And then before we discuss this guideline, I'd like to note that ASCO takes great care in the development of its guidelines and ensuring that the ASCO conflict of interest policy is followed for each guideline. The disclosures of potential conflicts of interest for the guideline panel, including Dr. Reuss, who has joined us here today, are available online with the publication of the guideline in the Journal of Clinical Oncology, which is linked in the show notes.

So to dive into what we're here today to talk about, Dr. Reuss, this living clinical practice guideline for systemic therapy for patients with stage IV non–small cell lung cancer with driver alterations is updated on an ongoing basis. So what prompted this latest update to the recommendations?

Dr. Joshua Reuss: Yes, thank you. It's very important that we have living guidelines that are continuously updated. We obviously don't live in a static environment where things are non-changing, and we really need to apply the most up-to-date and current evidence to treat our patients with the most effective strategies, the most groundbreaking strategies. And so to have guidelines that can be disseminated, particularly these ASCO guidelines, to treating providers is incredibly important.

So, with any of these updates, we review ongoing studies, published work, for the quality of evidence to see if it's something that warrants making adjustments to our guidelines or at least incorporating the information so that providers can review it and incorporate this into their own personal decision-making.

So in this particular update, we reviewed evidence particularly pertaining to EGFR-mutated non–small cell lung cancer and non–small cell lung cancer harboring an NRG1 fusion.

Brittany Harvey: Yes, certainly there's a lot of new evidence in the advanced non–small cell lung cancer field, and so we appreciate the panel's continuous review of this evidence.

So then you just mentioned two separate areas where the panel reviewed new evidence. So starting with that first one, what updated evidence did the panel review on first-line treatment options for patients with EGFR alterations, and how did this impact the recommendations?

Dr. Joshua Reuss: Yes, so advanced EGFR-mutated non–small cell lung cancer, at least with classical activating alterations - that is our exon 19 deletions and our exon 21 L858R mutations - is something that's really evolved rapidly in the last few years. You know, for many years, we basically, for the frontline treatment setting, were saying, "Okay, we have a targeted therapy, osimertinib. We're going to give that, and we're going to see what effect we can get out of that," with, you know, a median time of duration of treatment response averaging around 18 months, knowing that there are some that that's a lot longer and some that are a lot shorter. But recently, we've seen a lot of data emerging on combination strategies. The guideline has already been updated to incorporate two of these combinations: osimertinib with chemotherapy based off of the FLAURA2 trial, and then the combination of amivantamab with lazertinib based off of the MARIPOSA trial. And that was data on progression-free survival that was published and led to those particular recommendations.

Now, more recently, we've seen data come out in smaller, randomized studies for other combinations. And more recently, we reviewed the RAMOSE study. So this was a phase II, open-label, randomized trial for patients with tyrosine kinase inhibitor–naive and really, treatment-naive advanced EGFR-mutated non–small cell lung cancer harboring one of these two classical EGFR alterations, randomized to either osimertinib alone or osimertinib with the combination of ramucirumab, which is an anti-VEGF agent. There's been a lot of data, preclinical and clinical, for the role of VEGF blockade, particularly in EGFR-mutated non–small cell lung cancer, so exploring the combination of this for synergy in the frontline setting really made a lot of sense.

So again, this was a phase II trial that randomized patients prospectively to one of these two regimens. The population here is really what we typically see with EGFR-mutated non–small cell lung cancer, predominantly a younger population - median age on this study was 65 - predominantly female - 71% female - and predominantly nonsmokers. Now, what this study showed was that at a median follow-up of 16.6 months, the progression-free survival favored the combination arm with a median progression-free survival of 24.8 months with the combination of osimertinib plus ramucirumab versus 15.6 months for osimertinib alone, for a hazard rati