Dr. Hidehito Horinouchi, of the National Cancer Center Hospital in Japan, participated in the LUMINOSITY phase 2 (NCT03539536) clinical trial aiming to identify the c-Met protein-overexpressing NSCLC population best suited to Teliso-V monotherapy and expand selected groups for further evaluation.
For the purposes of this study, the researchers defined c-Met protein overexpression as greater than 25% tumor cells with more than 3+ staining (high:greater than or equal to 50% 3+; intermediate [int]: 25% to less than 50% 3+). Patients received 1.9 mg/kg intravenously every two weeks and the primary endpoint was Overall Response Rate (ORR).
In total, 172 patients with c-Met protein-OE EGFR WT nonsquamous NSCLC received at least one dose of Teliso-V, 57 of whom were Asian. A total of 48 Asian patients (c-Met high, n=26; c-Met intermediate, n=22) were evaluable for efficacy.
Median age in patients of Asian race was 65 years (range 47-82), 71% were male, and 67% had ECOG PS greater to or equal to 1. Overall, 92% received prior platinum therapy and 77% had prior immune checkpoint inhibitor therapy. For the Asian population, the ORR was 46.2% (c-Met high), 22.7% (c-Met intermediate), and 35.4% (overall). Median duration of response was 6.9 months (c-Met high), 8.3 months (c-Met intermediate), and 6.9 months (overall). The most common adverse events were hypoalbuminemia (32%), peripheral sensory neuropathy (23%), and pneumonia (21%).
“Compelling and durable responses were observed in patients of Asian race with c-Met protein-OE nonsquamous EGFR WT NSCLC, especially in patients with c-Met high; these results are similar to the overall population,” according to Dr. Horinouchi. He added that Teliso-V had an acceptable safety profile that was clinically manageable.
Teliso-V is being evaluated as a monotherapy in patients with previously treated c-Met overexpressing EGFR wild type nonsquamous NSCLC in the randomized Phase 3 study TeliMET NSCLC-01 (NCT04928846), which is currently enrolling.
About the IASLC:
The International Association for the Study of Lung Cancer (IASLC) is the only global organization dedicated solely to the study of lung cancer and other thoracic malignancies. Founded in 1974, the association’s membership includes more than 10,000 lung cancer specialists across all disciplines in over 100 countries, forming a global network working together to conquer lung and thoracic cancers worldwide. The association also publishes the Journal of Thoracic Oncology, the primary educational and informational publication for topics relevant to the prevention, detection, diagnosis, and treatment of all thoracic malignancies. Visit http://www.iaslc.org for more information.
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