SEATTLE, Wash. and VANCOUVER, British Columbia, September 30, 2019 — Achieve Life Sciences, Inc. (Nasdaq: ACHV), a clinical-stage pharmaceutical company committed to the global development and commercialization of cytisinicline for smoking cessation, today announced completion of their maximum tolerated dose (MTD) study. The results indicate a lack of dose-limiting toxicity as defined by protocol criteria even at the highest 30 mg single, oral dose of cytisinicline evaluated in the study.

This study, initiated in March 2019, is required by the FDA as part of a New Drug Application (NDA) for marketing approval in the United States. It was designed to determine dose-limiting adverse events (AEs) and to define the maximum tolerated dose for a single, oral dose of cytisinicline.

An independent Data Safety Monitoring Committee (DSMC) composed of the Study Investigator and two independent physicians evaluated all safety outcomes before each dose escalation. Stopping criteria for further dose escalation was defined as the occurrence of severe or serious AEs or any other safety information considered as a concern.

The starting dose was 6 mg, which increased in 3 mg increments up to 21 mg.  When the MTD was not reached at 21 mg, the study was amended to evaluate doses up to 30 mg. At this dose, the stopping criteria of serious or severe AEs were still not met, but the DSMC recommended stopping the study. The results will be reviewed with the FDA to determine if further escalation beyond 30 mg will be required.

“Cytisinicline continues to demonstrate an impressive safety profile, as seen in this study and in our recently announced Phase 2b ORCA-1 trial in smokers,” stated Dr. Cindy Jacobs, Chief Medical Officer of Achieve. “Side effects are often a key limitation to existing smoking cessation treatments and we believe cytisinicline continues to offer an improved tolerability profile, compared to currently available medications.”

The MTD has not been previously defined for cytisinicline. These results do not impact the intended 3 mg, 3 times daily dosing planned for future Phase 3 cytisinicline clinical trials, but rather demonstrate the lack of dose-limiting toxicity at doses up to 10 times higher than the planned 3 mg dose.

Additional information on cytisinicline can be found at and

About Cytisinicline
Tobacco use is currently the leading cause of preventable death and is responsible for nearly seven million deaths annually worldwide[1]. It is estimated that 28.7% of cancer deaths in the U.S. are attributable to cigarette smoking[2]. Achieve’s focus is to address the global smoking health epidemic through the development and commercialization of cytisinicline.

Cytisinicline is a plant-based alkaloid with a high binding affinity to the nicotinic acetylcholine receptor. It is believed to aid in smoking cessation by interacting with nicotine receptors in the brain by reducing the severity of nicotine withdrawal symptoms and by reducing the reward and satisfaction associated with smoking.

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