Company: ACHV
Filing Date: 2025-03-11
Form Type: 10-K
Source: 0000950170-25-036831
Chunk: 51

Company: ACHIEVE LIFE SCIENCES, INC.
Filing Date: 2025-03-11
Form: 10-K
Item: Item 1A
Chunk 51
---
 that statutory standard as generally requiring at least two adequate and well-controlled clinical trials, each convincing on its own, to establish effectiveness and a safety profile. Under certain circumstances the FDA will determine that data from one adequate and well-controlled clinical trial together with confirmatory evidence obtained prior to or after such clinical trial are sufficient to constitute substantial evidence of effectiveness.

Cytisinicline is a naturally occurring, plant-based alkaloid. Cytisinicline is structurally similar to nicotine and has a well-defined, dual-acting mechanism of action that is both agonistic and antagonistic. It is believed to aid in smoking cessation and the treatment of nicotine dependence by interacting with nicotine receptors in the brain, reducing the severity of nicotine withdrawal symptoms through agonistic effects on nicotine receptors and reducing the reward and satisfaction associated with nicotine through antagonistic properties. Cytisinicline has been studied in two company-sponsored randomized, multicenter, double-blind, placebo-controlled Phase 3 clinical studies that randomized a total of 1,602 adult smokers in 37 study sites across the United States. 

The FDA has advised us that long-term exposure data to assess for safety beyond 12 weeks will be needed to adequately assess safety risks given that the FDA views smoking cessation drugs as products for chronic, repeated, and intermittent use as patients may relapse and require subsequent courses of treatment over a lifetime. In the first quarter of 2024, we reached agreement with the FDA that a single, open-label study, which we refer to as ORCA-OL, evaluating the long-term safety effects of cytisinicline will be sufficient to complete the requirement and enable an NDA submission. We initiated the ORCA-OL trial in May 2024 and in October 2024 we announced the completion of enrollment of 479 subjects. In January 2025, we announced that the ORCA-OL trial had reached the goal of at least 300 subjects completing six months of cumulative cytisinicline exposure. However, regardless of these discussions and the results of the ORCA-OL open label study, the FDA may determine that:

•the existing data, and the data from the ORCA-OL open label study, may not be sufficient and the FDA may require additional clinical and/or nonclinical studies prior to filing an NDA or prior to approval of cytisinicline for treating nicotine dependence for smoking cessation in adults;

•the population studied in the clinical program may not be sufficiently broad or representative to assure safety in the full population for which we seek approval;

•