Designed to Assess the Efficacy and Safety of 3 mg Cytisinicline Three Times Daily Dosing Compared to Placebo

Phase 3 ORCA-2 Trial to Enroll 750 Smokers Across 15 Clinical Trial Sites in the United States

SEATTLE, Wash and VANCOUVER, British Columbia, October 7, 2020 — Achieve Life Sciences, Inc. (NASDAQ: ACHV), a clinical-stage pharmaceutical company committed to the global development and commercialization of cytisinicline for smoking cessation and nicotine addiction, today announced initiation of the Phase 3 ORCA-2 clinical trial. ORCA-2 will evaluate the efficacy and safety of 3 mg cytisinicline dosed 3 times daily compared to placebo in 750 adult smokers at 15 clinical sites in the United States.

“We are very excited to be participating in this important trial that will hopefully lead to a widely available new treatment option for smokers in the U.S. and around the globe,” commented Nancy Rigotti, MD, Massachusetts General Hospital, Professor of Medicine at Harvard Medical School, and Primary Investigator of the ORCA-2 trial. “Smoking remains the number one cause of preventable death and we clearly need new options to help people who smoke avoid the enormous toll of illness and death attributable to cigarette smoking.”

ORCA-2 participants will be randomized to one of three study arms to determine the smoking cessation efficacy and safety profile of cytisinicline administered for either 6 or 12 weeks, compared to placebo. All subjects will receive standard behavioral support and will be assigned to one of the following groups:

  • Arm A: 12 weeks of placebo
  • Arm B: 6 weeks of cytisinicline, followed by 6 weeks of placebo
  • Arm C: 12 weeks of cytisinicline

The primary outcome measure of success in the ORCA-2 trial is biochemically verified continuous abstinence during the last four weeks of treatment in the 6 and 12-week cytisinicline treatment arms compared to placebo.  Each treatment arm will be compared independently to the placebo arm, and the trial will be determined to be successful if either or both of the cytisinicline treatment arms show a statistical benefit compared to placebo. Secondary outcome measures will be conducted to assess continued abstinence rates through 6 months from the start of study treatment.

“We are optimistic that the ORCA-2 trial will add to the growing body of evidence demonstrating that cytisinicline, if approved, can be an effective and well-tolerated treatment for smokers who want to quit,” stated John Bencich, Chief Executive Officer of Achieve. “Importantly, based on the findings of ORCA-1 and modifications to the cytisinicline treatment regimen, including a longer duration of treatment and a higher dose, we believe ORCA-2 results may yield an improvement in quit rates compared to previously reported data.”

For additional information on cytisinicline and the ORCA-2 trial, visit or

About Achieve and Cytisinicline
Tobacco use is currently the leading cause of preventable death that is responsible for more than eight million deaths worldwide and nearly half a million deaths in the U.S. annually.1,2 More than 87% of lung cancer deaths, 61% of all pulmonary disease deaths, and 32% of all deaths from coronary heart disease are attributable to smoking and exposure to secondhand smoke.2

Achieve’s focus is to address the global smoking health and nicotine addiction epidemic through the development and commercialization of cytisinicline.

Cytisinicline is a plant-based alkaloid with a high binding affinity to the nicotinic acetylcholine receptor.