Phase II trial of ZD0473 as second-line therapy in mesothelioma

A phase II, open-label, non-comparative, multicentre trial of the platinum analogue ZD0473 as second-line therapy for pleural mesothelioma has been completed. The objectives were to evaluate the activity and tolerability of ZD0473 in patients with relapsed or progressive disease who had received one prior chemotherapy regimen. Forty-seven patients were recruited onto the trial, all aged >18 years with a life-expectancy >12 weeks, and World Health Organization (WHO) performance status ≤2. A starting dose of 120 mg/m 2 was administered to 14 patients, six of whom subsequently had their dose escalated to 150 mg/m2. Thirty-three patients received a starting dose of 150 mg/m2. In total, 147 treatment cycles were administered (median number of cycles 3 [range 1-6]). The main toxicity of ZD0473 was haematological (thrombocytopenia) and the most common non-haematological adverse event was nausea. There was no clinically significant nephro-, neuro-, or oto-toxicity. Of the 43 patients evaluable for response, 12% had a minor response (defined by a reduction in lesion size ≥10% but <50%), 44% had stable disease, 40% had disease progression, and two patients died before an objective response could be assigned. Median time to progression and death in evaluable patients was 77 days (95% confidence interval [CI]: 44, 105 days) and 203 days (95% CI: 165, 277 days), respectively. In conclusion, although ZD0473 demonstrated a manageable tolerability profile, no complete or partial responses were seen in second-line treatment of mesothelioma. This trial also demonstrates that clinical trials in second-line mesothelioma patients are feasible. © 2002 Elsevier Science Ltd. All rights reserved.Articl

Maintenance pazopanib versus placebo in Non-Small Cell Lung Cancer patients non-progressive after first line chemotherapy: A double blind randomised phase III study of the lung cancer group, EORTC 08092 (EudraCT: 2010-018566-23, NCT01208064)

Background Switch maintenance is an effective strategy in the treatment of advanced Non-Small Cell Lung Cancer (NSCLC). Pazopanib is an oral, multi-targeted tyrosine kinase inhibitor (TKI). EORTC 08092 evaluated pazopanib given as maintenance treatment following standard first line platinum-based chemotherapy in patients with advanced NSCLC. Methods Patients with non-progressive disease after 4–6 cycles of chemotherapy were randomised to receive either pazopanib 800 mg/day or matched placebo until progression or unacceptable toxicity. The primary end-point was overall survival and secondary end-points were progression-free survival (PFS) and safety. Results A total of 600 patients were planned to be randomised. The trial was prematurely stopped following an early interim analysis, after 102 patients were randomised to pazopanib (n = 50) or placebo (n = 52). Median age was 64 years in both arms. Median overall survival was 17.4 months for pazopanib and 12.3 months for placebo (adjusted hazard ratio (HR) 0.72 [95% confidence interval (CI) 0.40–1.28]; p = 0.257). Median PFS was 4.3 months versus 3.2 months (HR 0.67, [95% CI 0.43–1.03], p = 0.068). PFS rates at 4 months were 56% and 45% respectively. The majority of treatment-related adverse events (AEs) were grade 1–2. Grade 3–4 AEs (pazopanib versus placebo) were hypertension (38% versus 8%), neutropenia (8% versus 0%), and elevated SGPT (6% versus 0%). Of the patients randomised to pazopanib, 22% withdrew due to a treatment-related AE. Conclusions Switch maintenance with pazopanib following platinum-based chemotherapy in advanced NSCLC patients had limited side-effects. This study was stopped due to lack of efficacy by stringent criteria for PFS at a futility interim analysis

VP3-2022: Pembrolizumab (pembro) versus placebo for early-stage non-small cell lung cancer (NSCLC) following complete resection and adjuvant chemotherapy (chemo) when indicated: Randomized, triple-blind, phase III EORTC-1416-LCG/ETOP 8-15 – PEARLS/KEYNOTE-091 study

BACKGROUND & nbsp;Pembro is a standard of care for advanced NSCLC. PEARLS/ KEYNOTE-091 (NCT02504372) evaluated adjuvant pembro vs placebo for patients (pts) with completely resected early-stage NSCLC.& nbsp;METHODS & nbsp;Eligible pts with completely resected stage IB (T > 4 cm), II, or IIIA NSCLC per AJCC v7 followed by adjuvant chemo as indicated per guidelines, ECOG PS 0-1, and any PD-L1 expression were randomized 1:1 to pembro 200 mg or placebo Q3W for 18 doses (w1 year). Dual primary end points are DFS in the all-comers and PD-L1 TPS > 50% populations. Secondary end points are DFS in the TPS > 1% population, OS in the all-comers, TPS > 50% and > 1% populations, and safety. Data are from the protocol-specified second interim analysis (IA2; 20 September 2021, data cutoff).& nbsp;RESULTS & nbsp;1177 pts were randomized to pembro (N = 590) or placebo (N = 587), including 168 and 165, respectively, who had TPS >= 50%. Baseline characteristics were generally balanced between arms. Median time from randomization to data cutoff for IA2 was 35.6 mo (range 16.5-68.0). DFS was significantly improved with pembro in the all-comers population (median 53.6 vs 42.0 mo; HR 0.76; 95% CI 0.63-0.91; P = 0.0014); the significance boundary was not crossed for the TPS >= 50% population (median not reached in either arm; HR 0.82; 95% CI 0.57-1.18; P = 0.14). With only 209 events, the significance boundary for OS in the all-comers population was not crossed (18-mo rate 91.7% vs 91.3%; HR 0.87; 95% CI 0.67-1.15; P = 0.17). Median number of doses was 17 for pembro vs 18 for placebo. AEs were grade >= 3 in 34.1% of pts in the pembro arm vs 25.8% in the placebo arm and led to discontinuation in 19.8% vs 5.9%; treatment-related AEs led to death in 0.7% vs 0%.& nbsp;CONCLUSIONS & nbsp;Adjuvant pembro provided a statistically significant, clini-cally meaningful DFS improvement following complete resection and, when indicated, adjuvant chemo in pts with stage IB (T >= 4 cm)-IIIA NSCLC, regardless of PD-L1 expres-sion. The pembro safety profile was as expected. DFS in the PD-L1-defined populations and OS will be tested at future analyses according to the analysis plan