Non-small Cell Lung Cancer Stage IIIB

This interventional study aims to determine the pharmacokinetics of orally administered alectinib with dose escalation from 300 mg to 600 mg twice daily in Mexican patients with advanced ALK-positive NSCLC. The main question it aims to answer is: what will be the peak plasma concentrations of alectinib following sequential dose escalation (300, 450, and 600 mg BID) over nine weeks of pharmacokinetic evaluation (phase I) in Mexican patients with advanced ALK-rearranged NSCLC? In phase I (on days 0, 21, and 42), oral alectinib will be administered twice per day (BID) to patients with ALK-positive NSCLC; starting with 300 mg BID in 21-day cycles and dose escalation in 150 mg increments until 600 mg BID. Blood samples will be taken before and after administration of each dose (on days 1, 22, and 43). The primary endopoints in phase I will be dose-limiting toxicity (DLT) and PK parameters (Cmax. maximum plasma concentration; Tmax: time to reach maximum concentration: AUC 1-12: area under plasma ocncentrations-time curve steady-state concentration). At the end of the last blood collection (at day 43), the evaluation of each cycle will be at 600 mg, and the participant will be discharged to continue their treatment on an outpatient basis. Phase one will finish on day 63 of the study. In phase II, the chosen BID dose based on the phase I portion will be administrated until disease progression, development of unacceptable side effects, or withdrawal of consent. The primary endpoint in phase 2 is the overall response rate (ORR) per RECIST V.1.1.

The purpose of this study is to find out how many people with HER2-amplified or HER2-mutated non-small cell lung cancer (NSCLC) experience a decrease in tumor viability when they receive trastuzumab deruxtecan before routine surgery to remove tumors.

Clinical Trial Protocol Primary Objective: To evaluate the efficacy of the Xingbaiji Formula combined with chemotherapy and Sintilimab as first-line therapy in patients with recurrent or metastatic Stage IIIB-IV EGFR/ALK/ROS-1 mutation-negative non-small cell lung cancer (NSCLC), using Objective Response Rate (ORR) of tumor lesions as the primary endpoint. Secondary Objectives: To assess secondary endpoints including Progression-Free Survival (PFS), Quality of Life (QoL), immune-related indicators, and safety profile (e.g., incidence of adverse events), and to further evaluate the efficacy and safety of the combination therapy. Randomized Group Allocation: Participants will be randomly assigned to two groups: Control Group Regimen for Advanced Non-Squamous NSCLC: Drugs and Dosage: Sintilimab 200mg + Pemetrexed + Cisplatin/Carboplatin via intravenous infusion, administered every 3 weeks (Q3W) for 4 cycles. After completion of 4 cycles, patients enter the maintenance phase: Sintilimab 200mg Q3W (up to 24 months) + Pemetrexed Q3W until disease progression, intolerable toxicity, death, or voluntary withdrawal. Regimen for Advanced Squamous NSCLC: Drugs and Dosage: Sintilimab 200mg + Gemcitabine + Cisplatin/Carboplatin via intravenous infusion, Q3W for 4-6 cycles. Post-treatment, patients receive Sintilimab 200mg Q3W maintenance until disease progression, intolerability, or completion of 2 years of Sintilimab therapy. Experimental Group Control Group Regimen + Xingbaiji Formula Xingbaiji Formula Dosage: 1. Granule No. 1: 10g/bag, dissolved in warm water. Administration: 1 bag orally, twice daily (morning and evening), after meals. 2. Granule No. 2: 5g/bag, dissolved in warm water. Administration: 1 bag orally, twice daily (morning and evening), after meals. Treatment Duration: Both granules are taken concurrently with chemotherapy for 6 months, then discontinued.

Osimertinib, though a standard first-line treatment for EGFR-mutant advanced NSCLC, shows primary resistance in 10-30% of patients, leading to disease progression within 3-4 months. This resistance is linked to co-mutations in genes like TP53, RB1, and PIK3CA, among others. Studies indicate that Topo II inhibitor Etoposide (VP-16) can reduce cell survival, enhance DNA damage, and delay resistance in Osimertinib-resistant cells, suggesting a potential combination therapy to manage resistance.This study is a single-center, prospective, single-arm study evaluating the efficacy and safety of osimertinib combined with etoposide as a first-line treatment in patients with osimertinib-resistant or -insensitive advanced non-small cell lung cancer (NSCLC). The study focuses on patients with advanced NSCLC (stage IIIB or IV) with EGFR-sensitive mutations who developed slow resistance to osimertinib and for whom secondary biopsy after resistance did not identify any therapeutic targets.