neladalkib (NVL-655)

Despite the approval to date of 3 generations of ALK tyrosine kinase inhibitors (TKIs) and the clinical development of a 4th-generation ALK TKI, neladalkib (NVL-655), patients still eventually progress on sequential treatment of various generations of ALK TKIs...Since then, she has been treated with multiple ALK TKIs including crizotinib, alectinib, brigatinib, and lorlatinib sequentially (from age 75 to 80) but requiring dose reduction and interruption of lorlatinib due to neurocognitive toxicity from previous stereotactic brain radiation and resection and eventual discontinuation of lorlatinib...This is the first patient case report with >24 months on-going follow-up demonstrating that gilteritinib could be repurposed as a potent and tolerable ALK inhibitor based on previously reported pre-clinical activity and with potential CNS activity. A Phase 2 trial of gilteritnib in alectinib- or lorlatinib-refractory ALK+ NSCLC is being planned (NCT07140016).

• A PCR-based mutation prediction system was successfully applied to fourth-generation ALK inhibitors. • Neladalkib showed efficacy against G1202R-positive relapses with minimal evidence of secondary resistance mutations. • Sequential combinations of gilteritinib with either neladalkib or ensartinib may sustain efficacy and delay resistance in I1171N-positive relapses.

P3, N=450, Recruiting, Nuvalent Inc. | Initiation date: Mar 2025 --> Jul 2025

Specifically, V1180W, M1199W, and L1256S are the common mutations with decreased binding free energy concerning both inhibitors. These findings highlight important residues and mutations that may impact the clinical efficacy of NVL-655 and TPX-0131, and this pipeline provides an efficient and accurate framework to predict drug-resistant mutations and facilitate the rational design of next-generation ALK inhibitors.

P1/2, N=840, Recruiting, Nuvalent Inc. | N=470 --> 840 | Trial completion date: Mar 2026 --> Jan 2028 | Trial primary completion date: Feb 2026 --> Dec 2027

For EGFR exon 20 insertion mutation positive NSCLC, results from REZILIENT-1, a single arm phase II study with zipalertinib, were presented, showing an objective response rate (ORR) of 50% in patients that were pretreated with amivantamab, and 25% in patients pretreated with amivantamab and an EGFR exon 20 insertion-directed TKI...For ALK, results from ALKOVE-1, a single arm phase I/II study with NVL-655, a next generation ALK TKI, were presented. The ORR was 35 % in patients pretreated with ≥ 2 ALK TKIs including lorlatinib and 57 % in patients pretreated with ≥ 1 ALK TKI, excluding lorlatinib...In addition, results of the first-line randomized phase III INSPIRE study were presented, in which iruplinalkib, an ALK and ROS1 selective TKI, is being evaluated versus crizotinib...Finally, results from ARROS-1, a single arm phase I/II study with zidesamtinib, a ROS1 selective and TRK-sparing TKI, were presented. An ORR of 73% was obtained in patients that were pretreated with crizotinib and an ORR of 38% in patients pretreated with repotrectinib. In this review, we will discuss the relevant study results presented at ESMO 2024 for these three genomic drivers and hypothesize on their respective place in the sequence of treatment options.

P3, N=450, Recruiting, Nuvalent Inc. | Not yet recruiting --> Recruiting

P=N/A, N=0, Available, Nuvalent Inc.

P3, N=450, Not yet recruiting, Nuvalent Inc.

These preclinical findings are supported by three case studies from an ongoing first-in-human phase I/II trial of NVL-655 which demonstrate preliminary proof-of-concept clinical activity in heavily pretreated patients with ALK fusion-positive non-small cell lung cancer, including in patients with brain metastases and single or compound ALK resistance mutations. Significance: By combining broad activity against single and compound ALK resistance mutations, brain penetrance, and selectivity, NVL-655 addresses key limitations of currently approved ALK inhibitors and has the potential to represent a distinct advancement as a fourth-generation inhibitor for patients with ALK-driven cancers.

P1/2, N=470, Recruiting, Nuvalent Inc. | N=320 --> 470

Currently, a fourth-generation (4G) ALK TKI, NVL-655, is being developed to attack some of the unmet needs such as compound resistance mutations in cis...Potentially, in the shifting landscape where lorlatinib should be the first-line ALK TKI of choice based on the CROWN trial, the central β-sheet #6 (Cβ6) mutation ALK L1256F will be the potential acquired resistance mutation to lorlatinib which may be resistant to current ALK TKIs. Here we opine on what additional capacities a putative fifth-generation (5G) ALK TKI will need to possess if it can be achieved in one single molecule. We propose randomized trial schemas targeting some of the intrinsic resistance mechanisms that will lead to approval of a prototypic fifth-generation (5G) ALK TKI and actually be beneficial to ALK+ NSCLC patients rather than just design a positive pivotal superiority trial for the sole purpose of drug approval.