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Ref Type Journal Article
PMID (35087031)
Authors Shi Y, Fang J, Hao X, Zhang S, Liu Y, Wang L, Chen J, Hu Y, Hang X, Li J, Liu C, Zhang Y, Wang Z, Hu Y, Gu K, Huang J, Zhang L, Shan J, Ouyang W, Zhao Y, Zhuang W, Yu Y, Zhao J, Zhang H, Lu P, Li W, Si M, Ge M, Geng H
Title Safety and activity of WX-0593 (Iruplinalkib) in patients with ALK- or ROS1-rearranged advanced non-small cell lung cancer: a phase 1 dose-escalation and dose-expansion trial.
Journal Vol Issue Date Pages Journal Short Title
Signal transduction and targeted therapy 7 1 2022 01 28 25 Signal Transduct Target Ther
URL
Abstract Text WX-0593 (Iruplinalkib) is a novel, highly selective oral ALK and ROS1 tyrosine kinase inhibitor (TKI). In this study, the safety, antitumor activity, and pharmacokinetics of WX-0593 were evaluated in advanced non-small cell lung cancer (NSCLC) patients with ALK or ROS1 rearrangement. In the dose-escalation phase and dose-expansion phase, patients were treated with WX-0593 until disease progression, unacceptable toxicity, or subject withdrawal. In the dose-escalation phase, the primary endpoints were maximum tolerated dose (MTD), dose-limiting toxicity (DLT), and safety assessed by investigators. In the dose-expansion phase, the primary endpoint was objective response rate (ORR) assessed by investigators. Between September 25, 2017 and October 15, 2018, a total of 153 patients received WX-0593 treatment. Two dose-limiting toxicities (DLTs) including one grade 3 QT interval prolonged and one grade 2 chronic heart failure were reported at the dose of 300 mg in one patient. MTD was not reached. Overall, 140 of the 152 (92%) patients experienced treatment-related adverse events (TRAEs) and 35 of the 152 (23%) patients had TRAEs ≥grade 3. The overall ORR was 59.3% (32 of 54) for the dose-escalation phase and 56.6% (56 of 99) for the dose-expansion phase. For patients who were ALK-rearranged and ALK TKI naive, the ORR were 81.0% (17 of 21) in the dose-escalation phase and 76.3% (29 of 38) in the dose-expansion phase, and for patients who previously received crizotinib as the only ALK TKI, the ORR were 38.1% (8 of 21) and 45.7% (21 of 46) for the two phases, respectively. For patients who were ROS1-rearranged, the ORR were 30.0% (3 of 10) in the dose-escalation phase and 44.4% (4 of 9) in the dose-expansion phase. WX-0593 showed favorable safety and promising antitumor activity in advanced NSCLC patients with ALK or ROS1 rearrangement.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Iruplinalkib Iruplinalkib 21 0
Drug Name Trade Name Synonyms Drug Classes Drug Description
Iruplinalkib WX0593|WX 0593|FL 006|FL-006|FL006|WX-0593 ALK Inhibitor 33 EGFR Inhibitor (Pan) 63 ROS1 Inhibitor 23 Iruplinalkib (WX-0593) inhibits ALK and ROS1, with additional activity against EGFR mutations, which may lead to decreased tumor growth (PMID: 35087031; Cancer Res 2018;78(13 Suppl):Abstract nr 4794).
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
ALK rearrange lung non-small cell carcinoma sensitive Iruplinalkib Phase I Actionable In a Phase I trial, Iruplinalkib (WX-0593) demonstrated safety and resulted in an objective response rate (ORR) of 56.6% (56/99; all partial responses) and a disease control rate (DCR) of 83.8% (83/99), and median duration of response and median progression-free survival were not reached in non-small cell lung cancer patients with an ALK or ROS1-rearrangement, with an ORR of 58.2% (53/91; all partial responses) and DCR of 85.7% (78/91) in patients with an ALK rearrangement (PMID: 35087031; NCT03389815). 35087031
ROS1 rearrange lung non-small cell carcinoma sensitive Iruplinalkib Phase I Actionable In a Phase I trial, Iruplinalkib (WX-0593) demonstrated safety and resulted in an objective response rate (ORR) of 56.6% (56/99; all partial responses) and a disease control rate (DCR) of 83.8% (83/99), and median duration of response and median progression-free survival were not reached in non-small cell lung cancer patients with an ALK or ROS1-rearrangement, with an ORR of 44.4% (4/9) and DCR of 66.7% (6/9) in patients with a ROS1 rearrangement (PMID: 35087031). 35087031