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Smoking CessationPhase 1NCT03848208

A Single Dose-escalation Study of Cytisine in Adult Smokers

A Phase 1 study testing cytisine in people with Smoking Cessation, run by Achieve Life Sciences at 1 site in Portugal.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The objectives of this study are: 1. To assess the tolerability and safety of cytisine as a single oral dose. 2. To define the Cmax levels associated to the occurrence of dose-limiting adverse events. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Smoking Cessation
What is being tested?
cytisine
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
74 participants
Where
1 sitePortugal
Study dates
28 Feb 2019to 12 Sep 2019
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Subjects must meet ALL of the following criteria to be eligible for inclusion into the study:
  • Free written informed consent prior to any procedure required by the study.
  • Male or female subjects, age ≥18 years, at the time of signing the informed consent.
  • Current daily cigarette smokers (averaging at least 10 cigarettes per day in the past 30 days).
  • Expired air carbon monoxide (CO) ≥10 ppm.
  • Able to swallow multiple tablets at one time.
  • Able to fully understand, comply with all study requirements.

Who cannot join

  • Subjects meeting ANY of the following exclusion criteria will NOT be eligible for inclusion into the study at screening.
  • Known hypersensitivity to cytisine or any of the excipients.
  • Known severe hypersensitivity to any other drug.
  • Positive urinary drugs of abuse screen, determined within 28 days before cytisine/placebo dosing.
  • Positive ethanol breath test.
  • Clinically significant abnormal serum chemistry, hematology, coagulation or urinalysis values within 28 days of randomization (i.e. requiring treatment or monitoring).
Show all 27Show fewer
  • Clinically significant abnormalities in 12-lead echocardiogram (ECG) determined after minimum of 5 minutes in supine position within 28 days of randomization (i.e. requiring treatment or further assessment).
  • Body Mass Index (BMI) classification for being underweight (<18.5 kg/m2) or having ≥Class 2 obesity (≥35 kg/m2).
  • History of acute myocardial infarction, unstable angina, stroke, cerebrovascular incident, cardiac arrhythmia, or hospitalization for congestive heart failure.
  • Blood pressure ≥160/100 mmHg, measured on the dominant arm, after at least 3 minutes in supine position.
  • Creatinine clearance (CrCl) <80 mL/min (estimated with the Cockroft-Gault equation).
  • Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) >2.0 x the upper limit of normal (ULN).
  • Any inability to comply with study restrictions (See Section 9)
  • Any inability or difficulty in fasting.
  • Difficulty in donating blood on either arm.
  • If woman of childbearing potential, positive result in serum beta-human chorionic gonadotropin (hCG) pregnancy test.
  • Women who are breast-feeding.
  • Subjects who do not agree to use acceptable methods of birth control during the study (See Section 9.4).
  • Participation in a clinical study with an investigational drug within the previous 2 months.
  • Participation in more than 2 clinical trials within the previous 12 months.
  • Any other reason that the investigator views the subject should not participate or would be unable to fulfill the requirements for the study.
  • Subjects meeting ANY of the following exclusion criteria will NOT be eligible for inclusion into the study at admission to each cohort.
  • Any recent disease or condition or treatment that, according to the Investigator, would put the subject at undue risk due to study participation.
  • Positive urinary drugs of abuse screen.
  • Positive ethanol breath test.
  • If female of childbearing potential, positive result in urine beta-hCG pregnancy test.
  • Any other reason that the investigator views the subject should not participate or would be unable to fulfill the requirements for the study.

Trial locations and contacts

1 site in 1 country.

Portugal1 site
  • BlueClinical

    Porto, 4250-449

Other trials in Portugal

About this study

Official title: A Phase I, Double-blind, Randomized, Placebo-controlled, Single Dose-escalation Study to Evaluate the Tolerability and Safety of Cytisine in Adult Smokers

The objectives of this study are:

  1. To assess the tolerability and safety of cytisine as a single oral dose.
  2. To define the Cmax levels associated to the occurrence of dose-limiting adverse events.
Being tested
cytisine, placebo
Medical subject headings
Smoking Cessation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • cytisineDrug

    Also called Tabex, cytisinicline

    cytisine film-coated oral tablet

  • placeboDrug

    matching placebo oral tablet

Study groups in NCT03848208
Study groupRoleWhat they receive
Cohort 1: Cytisine 6.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 1: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 2: Cytisine 9.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 2: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 3: Cytisine 12.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 3: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 4: Cytisine 15.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 4: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 5: Cytisine 18.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 5: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 6: Cytisine 21.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 6: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 7: Cytisine 24.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 7: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 8: Cytisine 27.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 8: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo
Cohort 9: Cytisine 30.0 mgExperimentalCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: cytisine
Cohort 9: PlaceboPlacebo comparatorPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours.
Receives: Drug: placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs Leading to Study Discontinuation

    An adverse event (AE) is defined as any untoward medical occurrence that does not necessarily have to have a causal relationship with the treatment. A serious AE is any untoward medical occurrence or effect, that, at any dose: results in death; is life-threatening; requires hospitalization or prolongation of existing hospitalization; results in persistent or significant disability or incapacity; results in a congenital abnormality or birth defect; or is an important medical event which requires medical intervention to prevent one of the above. Treatment emergent events are those that occurred after the first dose of study drug.

    Measured: From first dose of study drug through Day 6

  2. Pharmacokinetics: Maximum Observed Plasma Concentration (Cmax)

    Measured: Day 1: Pre-dose (within 30 minutes prior to dosing), 15, 30, 40, 50 minutes and 1, 1.25, 1.5, 1.75, 2, 2.5, and 3 hours (+/-2 minutes) post-dose

  3. Pharmacokinetics: Time to Occurrence of Cmax (Tmax)

    Measured: Day 1: Pre-dose (within 30 minutes prior to dosing), 15, 30, 40, 50 minutes and 1, 1.25, 1.5, 1.75, 2, 2.5, and 3 hours (+/-2 minutes) post-dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Feb 2019
  2. Study start28 Feb 2019
  3. Primary completion12 Sep 2019
  4. Study completion12 Sep 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
74 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03848208
Sponsor's protocol ID
ACH-CYT-08
Other IDs
2018-003344-22, 2018
Status last verified
Aug 2020
First submitted
19 Feb 2019
Last updated
17 Sep 2020
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing cytisine in people with Smoking Cessation, run by Achieve Life Sciences at 1 site in Portugal.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Sep 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Portugal. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 17 Sep 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs Leading to Study Discontinuation (time frame: From first dose of study drug through Day 6). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Sep 2020.

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