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NCT03268343

A Study in Healthy Volunteers to Investigate the Effect of Food on the Bioavailability of Cytisine

Completed Phase 1 Results posted Last updated 26 February 2019
What this trial tests

Phase 1 trial testing Cytisine in Smoking Cessation in 24 participants. Completed in 1 September 2017.

Timeline
8 August 2017
Primary endpoint
26 August 2017
1 September 2017

Quick facts

Lead sponsorAchieve Life Sciences
PhasePhase 1
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designcrossover
Maskingnone
Primary purposetreatment
Enrollment24
Start date8 August 2017
Primary completion26 August 2017
Estimated completion1 September 2017
Sites1 location across United Kingdom

Drugs / interventions tested

Conditions studied

Sponsor

Achieve Life Sciences — full company profile →

Who can join

Adults 18 to 55, any sex, with Smoking Cessation. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Plasma Cytisine Pharmacokinetics (PK): Maximum Observed Plasma Concentration (Cmax) Primary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed22.9± 5.44
3 mg Cytisine, Fasted30.8± 7.91
Plasma Cytisine PK: Total Area Under the Curve From Time Zero to Infinity (AUC0-∞) Primary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed170± 30.3
3 mg Cytisine, Fasted176± 33.1
Plasma Cytisine PK: Time of Occurrence of Cmax (Tmax) Secondary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed2.750.500 – 6.12
3 mg Cytisine, Fasted0.750.333 – 3.00
Plasma Cytisine PK: AUC From Time Zero to the Last Sampling Time (AUC0-t) Secondary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed163± 29.4
3 mg Cytisine, Fasted169± 33.0
Plasma Cytisine PK: Residual Area, or Percentage of Extrapolated Part for the Calculation of AUC0-∞ (AUC%) Secondary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed4.37± 1.40
3 mg Cytisine, Fasted3.85± 1.46
Plasma Cytisine PK: Apparent Terminal Elimination Rate Constant (Lambda z) Secondary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed0.154± 0.0391
3 mg Cytisine, Fasted0.156± 0.0314
Plasma Cytisine PK: Apparent Terminal Elimination Half-Life (t1/2) Secondary · Pre-dose (within 60 minutes of dosing); 15 minutes, 20 minutes, 30 minutes, 45 minutes, 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, 14 hours, 16 hours and 24 hours post-dose (+/- 1 minute)
GroupValue95% CI
3 mg Cytisine, Fed4.77± 1.16
3 mg Cytisine, Fasted4.59± 0.832
Urine Cytisine PK: Amount Excreted in Urine Over Time (Ae) Secondary · Pre-dose (within 30 minutes prior to first dose); 0-2 hours, 2-4 hours, 4-8 hours, 8-12 hours and 12-24 hours post-dose
GroupValue95% CI
3 mg Cytisine, Fed2.59± 0.407
3 mg Cytisine, Fasted2.47± 0.357
Urine Cytisine PK: Percentage of Drug Excreted in Urine (Ae%) Secondary · Pre-dose (within 30 minutes prior to first dose); 0-2 hours, 2-4 hours, 4-8 hours, 8-12 hours and 12-24 hours post-dose

To assess the renal elimination of cytisine via measurement of urinary concentrations of cytisine.

GroupValue95% CI
3 mg Cytisine, Fed86.5± 13.6
3 mg Cytisine, Fasted82.4± 11.9
Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious TEAEs, and Discontinuation of Study Drug Due to AEs, by Severity and Relationship Secondary · Day -1 to Day 7 plus 6-8 days (post-study follow-up)

An adverse event (AE) is defined as any untoward medical occurrence which does not necessarily have a causal relationship with the treatment. TEAEs are defined as AEs not present prior to first administration of investigational product, or AEs present before first administration of study drug that worsen after the subject receives the first dose of study drug. A serious adverse event (SAE) is defined as an AE that: results in death; is life-threatening; requires hospitalization or prolongs existing inpatient's hospitalization; results in persistent or significant disability or incapacity; resu

≥ 1 TEAE
GroupValue95% CI
3 mg Cytisine, Fed6
3 mg Cytisine, Fasted7
≥ 1 Serious TEAE
GroupValue95% CI
3 mg Cytisine, Fed0
3 mg Cytisine, Fasted0
≥ 1 TEAE Leading to Withdrawal of Study Drug
GroupValue95% CI
3 mg Cytisine, Fed0
3 mg Cytisine, Fasted0
≥ 1 Mild TEAE
GroupValue95% CI
3 mg Cytisine, Fed6
3 mg Cytisine, Fasted7
≥ 1 Moderate TEAE
GroupValue95% CI
3 mg Cytisine, Fed0
3 mg Cytisine, Fasted0
≥ 1 Severe TEAE
GroupValue95% CI
3 mg Cytisine, Fed0
3 mg Cytisine, Fasted0
≥ 1 TEAE Definitely Related to Study Drug
GroupValue95% CI
3 mg Cytisine, Fed0
3 mg Cytisine, Fasted0
≥ 1 TEAE Probably Related to Study Drug
GroupValue95% CI
3 mg Cytisine, Fed1
3 mg Cytisine, Fasted1

Adverse events — posted to ClinicalTrials.gov

Time frame: Day -1 to Day 7 plus 6-8 days (post-study follow-up). Reporting threshold: 0%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

3 mg Cytisine, Fed
Serious: 0/24 (0%)
Deaths: 0/24
3 mg Cytisine, Fasted
Serious: 0/24 (0%)
Deaths: 0/24
3 mg Cytisine, Overall
Serious: 0/24 (0%)
Deaths: 0/24
Other adverse events (12 terms — click to expand)

ReactionSystem3 mg Cytisine, Fed3 mg Cytisine, Fasted3 mg Cytisine, Overall
DizzinessNervous system disorders
VomitingGastrointestinal disorders
HeadacheNervous system disorders
NauseaGastrointestinal disorders
Abdominal pain lowerGastrointestinal disorders
Feeling hotGeneral disorders
RhinitisInfections and infestations
HypoaesthesiaNervous system disorders
SomnolenceNervous system disorders
Cold sweatSkin and subcutaneous tissue disorders
ErythemaSkin and subcutaneous tissue disorders
Tooth repairSurgical and medical procedures

Data from ClinicalTrials.gov NCT03268343 adverse events section.

Sponsor's own description

This will be an open-label, randomised, 2-period, single-dose crossover study to determine the comparative bioavailability of cytisine following single-dose administration in healthy male and female subjects under fed and fasted conditions. The study will be comprised of a pre-study screen, followed by 2 treatment periods (1 and 2) and a post-study follow-up.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

Verify or expand the search:

Other trials of Cytisine

Trials testing the same drug.

Other recruiting trials for Smoking Cessation

Currently open trials in the same condition.

Other Achieve Life Sciences trials

Trials by the same sponsor.

Verify against primary sources

Data sources for this page

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing