Martin Dietrich, MD, PhD

Panelists discuss how second-line treatment options for HER2-mutant non–small cell lung cancer (NSCLC), particularly trastuzumab deruxtecan (T-DXd), require careful management of significant adverse effects, including interstitial lung disease/pneumonitis (especially concerning after prior immunotherapy due to the antibody’s immune-active properties), topoisomerase inhibitor–related gastrointestinal toxicity requiring strong antiemetic protocols, and cytopenias leading to fatigue and infection risk, making it more complex to manage than traditional precision medicine targeted therapies.

Panelists discuss how frontline treatment for HER2 mutant non–small cell lung cancer (mNSCLC) lacks FDA-approved targeted therapies, with current approaches varying between platinum-based chemotherapy with or without immunotherapy (such as the KEYNOTE-189 regimen), though some clinicians avoid immunotherapy in this population due to limited proven benefit in never-smokers who make up 60% of HER2-mutation patients, while considering whether to extrapolate from recently approved second-line targeted therapies like zongertinib.

Panelists discuss how community oncologists can best serve patients by understanding that lung cancer is no longer 1 disease requiring uniform treatment, emphasizing that comprehensive molecular testing including both next-generation sequencing and immunohistochemistry (IHC) is critical for identifying targetable alterations like HER2 mutations that now have FDA-approved targeted therapies, making broad panel testing essential for optimal patient outcomes in 2025.

Panelists discuss how circulating tumor DNA (ctDNA) testing is valuable for up-front molecular profiling in all locally advanced or metastatic lung cancer patients to accelerate treatment decisions, but longitudinal ctDNA monitoring is not yet standard practice for assessing treatment response in HER2 mutations, though it can be useful at disease progression to identify resistance mechanisms and guide subsequent therapy decisions.

Panelists discuss how HER2 alterations in lung cancer differ from other cancers like breast cancer, where overexpression is more common and targetable with antibody-drug conjugates (ADCs), while in lung cancer the focus is primarily on HER2 exon 20 insertion mutations and other tyrosine kinase domain mutations, requiring both next-generation sequencing (NGS) and immunohistochemistry (IHC) testing since liquid biopsies can detect mutations but not overexpression.

Martin Dietrich, MD, PhD, discusses the FDA accelerated approval of zongertinib for HER2-mutated or metastatic nonsquamous NSCLC.

Dr Dietrich discusses the rationale for testing for HER2 and MET mutations in patients with NSCLC, as well as best practices for implementing this testing.

Martin F. Dietrich, MD, PhD, discusses the efficacy and safety profiles of taletrectinib for the management of ROS1-positive non–small cell lung cancer.

Mike J. Pishvaian, MD, PhD, and Martin Dietrich, MD, PhD, discuss how KRAS(ON) inhibitors differ in mechanism from KRAS(OFF) inhibitors.

Mike J. Pishvaian, MD, PhD, and Martin Dietrich, MD, PhD, discuss the evolving role of KRAS G12C and pan-KRAS inhibitors in pancreatic cancer.

Mike J. Pishvaian, MD, PhD, and Martin Dietrich, MD, PhD, discuss the prevalence of RAS mutations in pancreatic ductal adenocarcinoma.

Mike J. Pishvaian, MD, PhD, and Martin Dietrich, MD, PhD, detail the continued interest in RAS inhibition for pancreatic ductal adenocarcinoma.

Panelists discuss how implementing the new standard of combination therapies requires thorough patient education, prophylactic management of toxicities, and multidisciplinary support to optimize outcomes for patients with EGFR-mutant lung cancer.

Panelists discuss how optimizing treatment duration, using local therapy for oligometastatic disease, and understanding the limitations of current biomarkers are important considerations in developing effective sequencing strategies for EGFR-mutant lung cancer.

Panelists discuss how central nervous system (CNS) progression presents unique challenges in treatment decision-making, highlighting the importance of brain imaging surveillance and considering approaches that maintain CNS disease control while addressing systemic progression.

Panelists discuss how many patients never receive second-line therapy, emphasizing the critical importance of selecting the optimal first-line treatment and monitoring patients closely to identify progression early.

Panelists discuss how subsequent therapy after initial disease progression should consider patient symptomatology, biomarker testing through tissue or liquid biopsies, and potential treatment options including MET-targeted approaches or chemotherapy combinations.

Panelists discuss how quality of life considerations, including prophylactic medications to prevent dermatologic toxicities and infusion-related reactions, are crucial when implementing EGFR-targeted therapies, especially the MARIPOSA regimen.

Panelists discuss how the overall survival benefit from the MARIPOSA regimen (amivantamab plus lazertinib) with a hazard ratio of 0.75 and projected survival improvement exceeding 1 year represents a significant advancement that must be weighed against toxicity concerns.

Panelists discuss how conversations with patients about treatment options have become more complex and nuanced, requiring thorough explanation of efficacy data and adverse effects while adapting to each patient’s level of understanding and involvement.

Panelists discuss how the treatment landscape for EGFR-mutant non–small cell lung cancer has evolved with new combination therapies like osimertinib plus chemotherapy (FLAURA2) and amivantamab plus lazertinib (MARIPOSA) challenging osimertinib monotherapy as the standard of care.

Panelists discuss what they would like to see in future trials to address the unmet needs and challenges in treating patients diagnosed with lung large cell neuroendocrine carcinoma (LCNEC).

Panelists discuss any upcoming trials on the horizon that they are excited about in the context of lung large cell neuroendocrine carcinoma (LCNEC) treatment.

Panelists discuss ongoing lung large cell neuroendocrine carcinoma (LCNEC) trials involving both familiar and novel agents, including phase 2 durvalumab + EP (1L), phase 2 LCNEC-ALPINE atezolizumab + EP (1L), phase 1/2 SKYBRIDGE PT217 DLL3/CD47 bispecific antibody (2L+), and phase 1 LB2102 DLL2-directed CAR T (2L+).

Panelists discuss ongoing trials with BI 764532 and their potential impact on the treatment of lung large cell neuroendocrine carcinoma (LCNEC).

Panelists discuss how novel targeted therapies, such as T-cell engagers, could improve outcomes for patients with lung large cell neuroendocrine carcinoma (LCNEC) and other neuroendocrine cancers (NECs).

Panelists discuss their impressions of the LANCE pilot study for atezolizumab in lung large cell neuroendocrine carcinoma (LCNEC) and its potential impact on treatment strategies.

Panelists discuss the typical treatment approach for patients with lung large cell neuroendocrine carcinoma (LCNEC), the patient-specific factors considered in first-line treatment selection, insights from the ASCO 2024 retrospective studies on first-line systemic treatment outcomes, and key considerations for choosing a second-line treatment strategy.