Japan's Ministry Of Health, Labour And Welfare Approves Novocure's Optune Lua For Concurrent Use With PD-1/PD-L1 Inhibitors For Adult Patients With Unresectable Advanced/Recurrent Non-small Cell Lung Cancer Who Have Progressed On Or After Platinum-Based Chemotherapy

Author: Benzinga Newsdesk | September 15, 2025 07:03am

Optune Lua is a wearable, portable medical device that produces alternating electric fields known as Tumor Treating Fields (TTFields), which are delivered through non-invasive, wearable arrays. TTFields exert physical forces on the electrically charged components of dividing cancer cells, resulting in cancer cell death.

Data Supporting the Optune Lua Approval

The MHLW approval was supported by the Phase 3 LUNAR trial, a prospective, randomized, open-label, multicenter study that compared the use of Optune Lua concurrent with PD-1/PD-L1 inhibitors or docetaxel (experimental arm) to PD-1/PD-L1 inhibitors or docetaxel alone (control arm) for patients with metastatic NSCLC who progressed during or after platinum-based therapy.

The primary endpoint of the study was achieved demonstrating a statistically significant and clinically meaningful 3.3-month (P=0.04) extension in median overall survival (OS) for patients treated with Optune Lua concurrently with a PD-1/PD-L1 inhibitor or docetaxel (n=145).

The group treated with Optune Lua concurrently with a PD-1/PD-L1 inhibitor or docetaxel had a median OS of 13.2 months (95% CI, 10.3 to 15.5 months) compared to a median OS of 9.9 months (95% CI, 8.2 to 12.2 months) in the PD-1/PD-L1 inhibitor or docetaxel treated group (n=146).

The LUNAR study included two pre-specified powered secondary endpoints. The first secondary endpoint, which met statistical significance, assessed median OS in patients treated with Optune Lua concurrently with a PD-1/PD-L1 inhibitor versus a PD-1/PD-L1 inhibitor alone. The second secondary endpoint, which showed a positive trend but did not meet statistical significance, assessed Optune Lua concurrently with docetaxel versus docetaxel alone.

Patients randomized to receive Optune Lua and a PD-1/PD-L1 inhibitor (n=70) demonstrated a median OS of 19.0 months (95% CI, 10.6 to 28.2 months) compared to a median OS of 10.8 months (95% CI, 8.3 to 17.6 months) in patients treated with a PD-1/PD-L1 inhibitor alone (n=71), which was a statistically significant extension in median OS of more than 8.0 months (P=0.02).

Patients randomized to receive Optune Lua and docetaxel (n=75) had a median OS of 11.1 months (95% CI, 8.2 to 13.9 months) compared to a median OS of 8.9 months (95% CI, 6.5 to 11.3 months) in patients treated with docetaxel alone (n=75). This 2.2-month extension in median OS did not provide a statistically significant demonstrated benefit but did show a positive trend.

Device-related adverse events (AEs) occurred in 63.1% of patients (n=89), these were skin-related disorders under the transducer arrays. The majority of these events were low grade (Grade 1 - 2), with only 4% (n=6) experiencing Grade 3 skin toxicity that required a break from treatment. There were no Grade 4 or Grade 5 toxicities related to Optune Lua, and no device-related AEs that caused death.

Baseline patient characteristics were well balanced between cohorts: median age was 65 years (range, 22-86); 66% male, 34% female; 96% of patients had an ECOG performance status of 0-1. PD-L1 expression data were collected from 83% of patients (69 of 83 patients) enrolled at U.S. sites and were well balanced across the four cohorts.

Posted In: NVCR