CClinicalTrials.gg
TerminatedNCT00832650Updated Dec 24, 2010Results posted

Multiple Dose Study To Investigate The Effects Of Fesoterodine And Solifenacin On Gastrointestinal Transit

A Phase 1 interventional study of fesoterodine fumarate and placebo in Healthy, sponsored by Pfizer. Terminated at 1 site in United States. Open to female participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2010-12-24.

Sponsored by Pfizer · Phase 1, Interventional, and Treatment

Why this study was terminated
Protocol A0221057 was terminated on December 25, 2009 for futility. There were no safety concerns related to this decision.
Phase
Phase 1
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
Female
01

Study summary

To assess the effect of fesoterodine 8 mg as compared to solifenacin 10 mg on colonic transit.

02

Conditions studied

  • Healthy

Keywords

  • Healthy; Fesoterodine; Solifenacin
03

In context

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy female subjects

Exclusion criteria

Exclusion Criteria:

  • Evidence or history of clinically significant findings at screening
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    Fesoterodine

    Tablets

    Drug: fesoterodine fumarate

  • Placebo comparator
    Placebo

    Tablets

    Drug: placebo

  • Active comparator
    Solifenacin

    Tablets

    Drug: solifenacin

Interventions

  • Drugfesoterodine fumarate

    8 mg OD for 14 days

  • Drugplacebo

    OD for 14 days

  • Drugsolifenacin

    10 mg OD for 14 days

06

What researchers measure

Primary outcomes

  1. Colonic Transit at 24 Hours

    Colonic transit: Geometric centre at 24 hours (GC24) was estimated using geometric mean of counts in ascending (AC), transverse (TC), descending (DC) and rectosigmoid (RS) colon and stool (weighted by factors of 1 to 5 respectively). To calculate the geometric centre, the proportion of colonic counts in each colonic region was multiplied by its weighing factor: (% AC \*1 + % TC \*2 + % DC \*3 + % RS \*4 + % stool \* 5 ) divided by 100.

    Time frame: Day 13 (Day 12 24 hours post-meal)

Secondary outcomes

  1. Proximal Colonic Emptying Time

    Estimated by power exponential analysis of the proportionate emptying over time of counts from the colon.

    Time frame: Day 12 to 14

  2. Colonic Transit at 48 Hours

    Colonic transit: Geometric centre at 48 hours (GC48) was estimated using geometric mean of counts in ascending (AC), transverse (TC), descending (DC) and rectosigmoid (RS) colon and stool (weighted by factors of 1 to 5 respectively). To calculate the geometric centre, the proportion of colonic counts in each colonic region was multiplied by its weighing factor: (% AC \*1 + % TC \*2 + % DC \*3 + % RS \*4 + % stool \* 5 ) divided by 100.

    Time frame: Day 14 (Day 12 48 hours post-meal)

  3. Colonic Filling at 6 Hours

    A surrogate marker of small bowel transit time.

    Time frame: Day 12

  4. Time to Gastric Emptying

    Ascending colon emptying t½ was estimated by power exponential analysis of the proportionate emptying over time of counts from the colon.

    Time frame: Day 12: 2 hours, 4 hours

  5. Mean Number of Stools Per Day

    Number of stools passed on each notional day where each visit to the toilet counts as one stool (only) unless nothing is passed. Mean of 3 days.

    Time frame: Day 11 to 13

  6. Mean Score of Stool Consistency Per Day

    Calculated by averaging the values of the stool form given at each visit to the toilet on each notional day. Mean of 3 days. Range of possible scores: 1 (hard lumps) to 7 (watery).

    Time frame: Day 11 to 13

  7. Average Score of Ease of Passage During Defecation Per Day

    Calculated by averaging the values given for the ease of passage at each visit to the toilet on each notional day. Mean of 3 days. Range of possible scores: 1 (Manual disimpaction) to 7 (Incontinent).

    Time frame: Day 11 to 13

  8. Mean Proportion of Bowel Movements With Satisfaction Per Day

    The number of stools with satisfaction of "Yes" divided by the total number of stools passed on each notional day. Mean of 3 days.

    Time frame: Day 11 to 13

07

Results

Posted Dec 24, 2010
Limitations and caveats
Study was terminated due to futility based on interim analysis with 60 subjects. Although the results of statistical test for the primary endpoint was interpreted, the other endpoint results were interpreted based on statistical inference.

Participant flow

Participant flow — Overall Study
MilestoneFesoterodinePlaceboSolifenacin
Started251223
Treated251222
Completed251222
Not completed001
Withdrew: Randomized but not treated001

Outcome measures

PrimaryColonic Transit at 24 Hours

Colonic transit: Geometric centre at 24 hours (GC24) was estimated using geometric mean of counts in ascending (AC), transverse (TC), descending (DC) and rectosigmoid (RS) colon and stool (weighted by factors of 1 to 5 respectively). To calculate the geometric centre, the proportion of colonic counts in each colonic region was multiplied by its weighing factor: (% AC \*1 + % TC \*2 + % DC \*3 + % RS \*4 + % stool \* 5 ) divided by 100.

Time frame:
Day 13 (Day 12 24 hours post-meal)
Reported as:
Mean · counts
Colonic Transit at 24 Hours
countsFesoterodinePlaceboSolifenacin
Colonic Transit at 24 Hours1.98 ± 0.7702.51 ± 1.0781.91 ± 0.515
Statistical analysis
  • Fesoterodine vs Solifenacin · ANCOVA · Ls mean difference: 0.051 · 95% CI -0.334 to 0.436Least squares mean was calculated based on the ANCOVA model with treatment group as a fixed effect and baseline values, age and Body Mass Index (BMI) as covariates.
SecondaryProximal Colonic Emptying Time

Estimated by power exponential analysis of the proportionate emptying over time of counts from the colon.

Time frame:
Day 12 to 14
Reported as:
Mean · hours
Proximal Colonic Emptying Time
hoursFesoterodinePlaceboSolifenacin
Proximal Colonic Emptying Time21.06 ± 5.50014.79 ± 6.23919.23 ± 6.194
SecondaryColonic Transit at 48 Hours

Colonic transit: Geometric centre at 48 hours (GC48) was estimated using geometric mean of counts in ascending (AC), transverse (TC), descending (DC) and rectosigmoid (RS) colon and stool (weighted by factors of 1 to 5 respectively). To calculate the geometric centre, the proportion of colonic counts in each colonic region was multiplied by its weighing factor: (% AC \*1 + % TC \*2 + % DC \*3 + % RS \*4 + % stool \* 5 ) divided by 100.

Time frame:
Day 14 (Day 12 48 hours post-meal)
Reported as:
Mean · counts
Colonic Transit at 48 Hours
countsFesoterodinePlaceboSolifenacin
Colonic Transit at 48 Hours3.55 ± 0.9343.67 ± 1.0663.14 ± 0.765
SecondaryColonic Filling at 6 Hours

A surrogate marker of small bowel transit time.

Time frame:
Day 12
Reported as:
Mean · percentage
Colonic Filling at 6 Hours
percentageFesoterodinePlaceboSolifenacin
Colonic Filling at 6 Hours7.84 ± 16.28669.58 ± 25.85424.06 ± 23.696
SecondaryTime to Gastric Emptying

Ascending colon emptying t½ was estimated by power exponential analysis of the proportionate emptying over time of counts from the colon.

Time frame:
Day 12: 2 hours, 4 hours
Reported as:
Mean · minutes
Time to Gastric Emptying
minutesFesoterodinePlaceboSolifenacin
Time to Gastric Emptying145.00 ± 32.628112.92 ± 21.998127.47 ± 35.456
SecondaryMean Number of Stools Per Day

Number of stools passed on each notional day where each visit to the toilet counts as one stool (only) unless nothing is passed. Mean of 3 days.

Time frame:
Day 11 to 13
Reported as:
Mean · stools
Mean Number of Stools Per Day
stoolsFesoterodinePlaceboSolifenacin
Mean Number of Stools Per Day0.93 ± 0.3971.06 ± 0.4221.11 ± 0.497
SecondaryMean Score of Stool Consistency Per Day

Calculated by averaging the values of the stool form given at each visit to the toilet on each notional day. Mean of 3 days. Range of possible scores: 1 (hard lumps) to 7 (watery).

Time frame:
Day 11 to 13
Reported as:
Mean · score on a scale
Mean Score of Stool Consistency Per Day
score on a scaleFesoterodinePlaceboSolifenacin
Mean Score of Stool Consistency Per Day3.66 ± 1.1493.29 ± 1.1123.02 ± 1.057
SecondaryAverage Score of Ease of Passage During Defecation Per Day

Calculated by averaging the values given for the ease of passage at each visit to the toilet on each notional day. Mean of 3 days. Range of possible scores: 1 (Manual disimpaction) to 7 (Incontinent).

Time frame:
Day 11 to 13
Reported as:
Mean · score on a scale
Average Score of Ease of Passage During Defecation Per Day
score on a scaleFesoterodinePlaceboSolifenacin
Average Score of Ease of Passage During Defecation Per Day3.90 ± 0.4033.97 ± 0.0963.83 ± 0.705
SecondaryMean Proportion of Bowel Movements With Satisfaction Per Day

The number of stools with satisfaction of "Yes" divided by the total number of stools passed on each notional day. Mean of 3 days.

Time frame:
Day 11 to 13
Reported as:
Mean · mean proportion
Mean Proportion of Bowel Movements With Satisfaction Per Day
mean proportionFesoterodinePlaceboSolifenacin
Mean Proportion of Bowel Movements With Satisfaction Per Day0.88 ± 0.2500.81 ± 0.3240.93 ± 0.234

Adverse events

Collected over Up to 7 days after last dose of study drug. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Fesoterodine—0/25 (0%)22/25 (88%)
Placebo—0/12 (0%)6/12 (50%)
Solifenacin—0/22 (0%)15/22 (68.2%)
Most frequent other events
Showing 10 of 27
Most frequent other events
EventFesoterodinePlaceboSolifenacin
Dry mouthGastrointestinal disorders13/250/127/22
HeadacheNervous system disorders12/253/122/22
Abdominal pain upperGastrointestinal disorders0/253/121/22
DyspepsiaGastrointestinal disorders1/253/120/22
Abdominal distensionGastrointestinal disorders0/250/123/22
Back painMusculoskeletal and connective tissue disorders0/250/123/22
DysmenorrhoeaReproductive system and breast disorders2/251/123/22
Oropharyngeal painRespiratory, thoracic and mediastinal disorders1/250/123/22
Abdominal discomfortGastrointestinal disorders1/251/122/22
Abdominal painGastrointestinal disorders2/250/122/22

Baseline characteristics

Age, Customized
Age, Customized(participants)FesoterodinePlaceboSolifenacinTotal
less than 18 years0000
18 to 25 years55616
26 to 35 years72615
36 to 45 years72817
greater than 45 years63312
Sex: Female, Male
Sex: Female, Male(Participants)FesoterodinePlaceboSolifenacinTotal
Female25122360
Male0000
08

Study locations

1 site
  • Pfizer Investigational Site
    Rochester, Minnesota 55905, United States
09

References and documents

Publications

  • Bharucha AE, Isowa H, Hiro S, Guan Z. Differential effects of selective and non-selective muscarinic antagonists on gastrointestinal transit and bowel function in healthy women. Neurogastroenterol Motil. 2013 Jan;25(1):e35-43. doi: 10.1111/nmo.12043. Epub 2012 Nov 21. PubMed 23171069 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 24, 2010, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00832650
Lead sponsor
Pfizer
First posted
Jan 30, 2009
Start date
Apr 2009
Primary completion
Dec 2009
Completion
Dec 2009
Results posted
Dec 24, 2010
Last update
Dec 24, 2010

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Dec 2010. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion