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.
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.
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:
- To assess the tolerability and safety of cytisine as a single oral dose.
- To define the Cmax levels associated to the occurrence of dose-limiting adverse events.
- Conditions
- Smoking Cessation
- 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 group | Role | What they receive |
|---|---|---|
| Cohort 1: Cytisine 6.0 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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 mg | Experimental | Cytisine 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: Placebo | Placebo comparator | Placebo 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.
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
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
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.
- First posted20 Feb 2019
- Study start28 Feb 2019
- Primary completion12 Sep 2019
- Study completion12 Sep 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Smoking CessationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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)
Sponsor and investigators
- Lead sponsor
- Achieve Life Sciences
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Marlene Fonseca, MD, Principal investigator, Hospital da Prelada
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
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 17 Sep 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- 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
- ClinicalTrials.gov ID
- NCT03848208
- Acronym / sponsor ID
- ACH-CYT-08
- Conditions
- Smoking Cessation
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 74 participants (actual)
- Lead sponsor
- Achieve Life SciencesIndustry (pharma, biotech, devices)
- Study start
- 28 Feb 2019 (actual)
- Primary completion
- 12 Sep 2019 (actual)
- Study completion
- 12 Sep 2019 (actual)
- First posted
- 20 Feb 2019 (actual)
- Results
- Posted 17 Sep 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The objectives of this study are:
- To assess the tolerability and safety of cytisine as a single oral dose.
- To define the Cmax levels associated to the occurrence of dose-limiting adverse events.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 18
| Arm | Type | Receives |
|---|---|---|
| Cohort 1: Cytisine 6.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 1: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 2: Cytisine 9.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 2: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 3: Cytisine 12.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 3: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 4: Cytisine 15.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 4: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 5: Cytisine 18.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 5: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 6: Cytisine 21.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 6: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 7: Cytisine 24.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 7: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 8: Cytisine 27.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 8: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 9: Cytisine 30.0 mg | Experimental | Drug: cytisineCytisine will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
| Cohort 9: Placebo | Placebo comparator | Drug: placeboPlacebo will be administered in the morning, orally, with 240 mL of water, after fasting overnight for at least 10 hours. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- 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.
Key exclusion criteria (27 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| cytisineAlso: Tabex, cytisiniclinecytisine film-coated oral tablet | Drug | Cohort 1: Cytisine 6.0 mg, Cohort 2: Cytisine 9.0 mg, Cohort 3: Cytisine 12.0 mg, Cohort 4: Cytisine 15.0 mg, Cohort 5: Cytisine 18.0 mg, Cohort 6: Cytisine 21.0 mg, Cohort 7: Cytisine 24.0 mg, Cohort 8: Cytisine 27.0 mg, Cohort 9: Cytisine 30.0 mg |
| placebomatching placebo oral tablet | Drug | Cohort 1: Placebo, Cohort 2: Placebo, Cohort 3: Placebo, Cohort 4: Placebo, Cohort 5: Placebo, Cohort 6: Placebo, Cohort 7: Placebo, Cohort 8: Placebo, Cohort 9: Placebo |
Primary outcome
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
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.
Pharmacokinetics: Maximum Observed Plasma Concentration (Cmax)
Time frame: 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
Pharmacokinetics: Time to Occurrence of Cmax (Tmax)
Time frame: 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
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Sep 2020.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Marlene Fonseca, MD principal investigator
Hospital da Prelada
1 site in 1 country: see every site and its status.
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.