A1481272: A Relative Bioavailability Study Between Two Formulations Of Sildenafil Citrate

Sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc. (Industry)
Overall Status
Completed
CT.gov ID
NCT00904748
Collaborator
(none)
47
1
3
1.9
24.2

Study Details

Study Description

Brief Summary

The purpose of this study is to perform a relative bioavailability study between two formulations of sildenafil citrate.

Condition or Disease Intervention/Treatment Phase
  • Drug: sildenafil citrate 100 mg CT
  • Drug: sildenafil citrate 100 mg CT
  • Drug: Viagra®
Phase 1

Detailed Description

Bio-equivalence between two formulations of sildenafil citrate

Study Design

Study Type:
Interventional
Actual Enrollment :
47 participants
Allocation:
Randomized
Intervention Model:
Crossover Assignment
Masking:
None (Open Label)
Primary Purpose:
Other
Official Title:
A Relative Bioavailability Study Between Two Formulations Of Sildenafil Citrate In Healthy Male Subjects, Fasting Dosing, Being The Test Formulation Sildenafil Citrate 100 Mg CT , And The Reference Formulation Sildenafil Citrate 100 Mg Film-Coated Tablets (Viagra®), Both Formulations Manufactured By Laboratórios Pfizer Ltda.
Study Start Date :
Jan 1, 2010
Actual Primary Completion Date :
Mar 1, 2010
Actual Study Completion Date :
Mar 1, 2010

Arms and Interventions

Arm Intervention/Treatment
Experimental: Test 1

Drug: sildenafil citrate 100 mg CT
sildenafil citrate 100 mg CT, single dose without water

Experimental: Test 2

Drug: sildenafil citrate 100 mg CT
sildenafil citrate 100 mg CT, single dose with water

Active Comparator: Reference

Drug: Viagra®
sildenafil citrate 100 mg film-coated tablet (Viagra®), single dose

Outcome Measures

Primary Outcome Measures

  1. Area Under the Curve (AUC 0-t) [Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose]

    Area under the blood concentration-time profile from time zero to last experimentally determined concentration measured in nanograms*hour/milliliter (ng*hr/mL).

  2. Maximum Plasma Concentration (Cmax) [Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose]

    Maximum plasma concentration measured in nanograms per milliliter (ng/mL).

Secondary Outcome Measures

  1. Area Under the Curve From 0 to Infinity (AUC 0-inf ) [Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose]

    Area under the blood concentration-time profile from time zero extrapolated to infinite time measured in nanograms *hour/milliliter (ng*hr/mL).

  2. Time to Maximum Plasma Concentration (Tmax) [Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose]

    Time at which maximum plasma concentration (Cmax) occurred.

  3. Half-life (T 1/2) [Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose]

    Terminal elimination half-life.

  4. Number of Participants With Clinically Significant Findings in Vital Signs [Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.5, 1, 2, 4, 8 and 12 hours post-dose.]

    Clinically significant abnormalities in blood pressure (BP), pulse, and temperature reported as an adverse event. Clinically significant = values outside the normal range and/or values judged as significant by the investigator (normal range: systolic BP 100-140 mmHg; diastolic BP 60- 90 mmHg; temperature 35-37°Celsius). Pulse rate based on investigator discretion.

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years to 50 Years
Sexes Eligible for Study:
Male
Accepts Healthy Volunteers:
Yes
Inclusion Criteria:
  • Body mass index higher or equal to 18,5 and lower or equal than 29,9 kg/m2.

  • Good health conditions or without significant disease, at medical discretion, according to the rules defined in the Protocol, and evaluations undergone: clinical history, pulse and blood pressure measurements, physical and psychological examination, ECG and complementary laboratory examination.

  • Able to understand the study nature and objective, including the risks and adverse effects and willing to cooperate with the investigator and act according to all the trial requirements, which is confirmed by signing the Informed Consent Form.

Exclusion Criteria:
  • Hypersensitivity to the study drug or to the chemically related compounds; history of serious adverse reactions or hypersensitivity to any drug.

  • History or presence of hepatic or gastrointestinal diseases, or other condition that affects the drug absorption, distribution, excretion or metabolism

  • History of hepatic, renal, lung, gastrointestinal, epileptic, hematological or psychiatric disease; hypo or hypertension of whatever etiology which demands treatment with drugs; history or occurrence of myocardial infarction, angina and/or cardiac failure;

Contacts and Locations

Locations

Site City State Country Postal Code
1 Pfizer Investigational Site Braganca Paulista SP Brazil 12916-900

Sponsors and Collaborators

  • Pfizer's Upjohn has merged with Mylan to form Viatris Inc.

Investigators

  • Study Director: Pfizer CT.gov Call Center, Pfizer

Study Documents (Full-Text)

None provided.

More Information

Additional Information:

Publications

None provided.
Responsible Party:
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
ClinicalTrials.gov Identifier:
NCT00904748
Other Study ID Numbers:
  • A1481272
  • JPJ 39/09
First Posted:
May 20, 2009
Last Update Posted:
Feb 1, 2021
Last Verified:
Jan 1, 2021
Keywords provided by Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Additional relevant MeSH terms:

Study Results

Participant Flow

Recruitment Details
Pre-assignment Detail Each participant was to receive each of 3 formulations in 3 treatment periods, after being allocated to 1 of 6 treatment sequences. There was to be a minimum interval of 3 days between treatment periods.
Arm/Group Title Sequence 1 Sequence 2 Sequence 3 Sequence 4 Sequence 5 Sequence 6
Arm/Group Description Reference (Sildenafil 100 milligram (mg) coated tablet administered with water, Test 1 (Sildenafil 100 milligram (mg) chewable tablet administered without water), Test 2 (Sildenafil 100 milligram (mg) chewable tablet administered with water) Reference (Sildenafil 100 milligram (mg) coated tablet administered with water, Test 2 (Sildenafil 100 milligram (mg) chewable tablet administered with water), Test 1 (Sildenafil 100 milligram (mg) chewable tablet administered without water) Test 1 (Sildenafil 100 milligram (mg) chewable tablet administered without water), Reference (Sildenafil 100 milligram (mg) coated tablet administered with water, Test 2 (Sildenafil 100 milligram (mg) chewable tablet administered with water) Test 1 (Sildenafil 100 milligram (mg) chewable tablet administered without water), Test 2 (Sildenafil 100 milligram (mg) chewable tablet administered with water), Reference (Sildenafil 100 milligram (mg) coated tablet administered with water Test 2 (Sildenafil 100 milligram (mg) chewable tablet administered with water), Reference (Sildenafil 100 milligram (mg) coated tablet administered with water, Test 1 (Sildenafil 100 milligram (mg) chewable tablet administered without water) Test 2 (Sildenafil 100 milligram (mg) chewable tablet administered with water), Test 1 (Sildenafil 100 milligram (mg) chewable tablet administered without water), Reference (Sildenafil 100 milligram (mg) coated tablet administered with water
Period Title: Overall Study
STARTED 8 8 8 8 8 8
Received Treatment 8 8 8 8 7 8
COMPLETED 7 7 7 6 7 8
NOT COMPLETED 1 1 1 2 1 0

Baseline Characteristics

Arm/Group Title Entire Study Population
Arm/Group Description Includes all participants who were randomized to any treatment sequence
Overall Participants 48
Age (years) [Mean (Full Range) ]
Mean (Full Range) [years]
29.3
Sex: Female, Male (Count of Participants)
Female
0
0%
Male
48
100%

Outcome Measures

1. Primary Outcome
Title Area Under the Curve (AUC 0-t)
Description Area under the blood concentration-time profile from time zero to last experimentally determined concentration measured in nanograms*hour/milliliter (ng*hr/mL).
Time Frame Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose

Outcome Measure Data

Analysis Population Description
Participants for pharmacokinetic analysis = participants who completed all of the 3 treatment periods.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water
Measure Participants 42 42 42
Mean (Standard Deviation) [ng*hr/mL]
1467.00
(560.99)
1458.45
(602.73)
1493.53
(615.59)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Test 1: 100 mg Chewable, Without Water, Reference: 100 mg Coated, With Water
Comments Ratio between geometric means of Test 1 study treatment (chewable without water) and reference study treatment (coated with water).
Type of Statistical Test Non-Inferiority or Equivalence (legacy)
Comments Percent of reference to detect for 2-1 tests and power = 20.0%.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter ratio between geometric means
Estimated Value 98.68
Confidence Interval (2-Sided) 90%
92.03 to 105.82
Parameter Dispersion Type:
Value:
Estimation Comments Estimated value = ratio (% reference).
Statistical Analysis 2
Statistical Analysis Overview Comparison Group Selection Test 2: 100 mg Chewable, With Water, Reference: 100 mg Coated, With Water
Comments Ratio between geometric means of Test 2 study treatment (chewable with water) and reference study treatment (coated with water).
Type of Statistical Test Non-Inferiority or Equivalence (legacy)
Comments Percent of reference to detect for 2-1 tests and power = 20.0%.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter ratio between geometric means
Estimated Value 97.23
Confidence Interval (2-Sided) 90%
90.67 to 104.26
Parameter Dispersion Type:
Value:
Estimation Comments Estimated value = ratio (% reference).
2. Primary Outcome
Title Maximum Plasma Concentration (Cmax)
Description Maximum plasma concentration measured in nanograms per milliliter (ng/mL).
Time Frame Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose

Outcome Measure Data

Analysis Population Description
Participants for pharmacokinetic analysis = participants who completed all of the 3 treatment periods.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water
Measure Participants 42 42 42
Mean (Standard Deviation) [ng/mL]
439.38
(198.25)
434.38
(211.53)
532.31
(217.32)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Test 1: 100 mg Chewable, Without Water, Reference: 100 mg Coated, With Water
Comments Ratio between geometric means of Test 1 study treatment (chewable without water) and reference study treatment (coated with water).
Type of Statistical Test Non-Inferiority or Equivalence (legacy)
Comments Percent of reference to detect for 2-1 tests and power = 20%.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter ratio between geometric means
Estimated Value 80.83
Confidence Interval (2-Sided) 90%
72.38 to 90.26
Parameter Dispersion Type:
Value:
Estimation Comments Estimated value = ratio (% reference).
Statistical Analysis 2
Statistical Analysis Overview Comparison Group Selection Test 2: 100 mg Chewable, With Water, Reference: 100 mg Coated, With Water
Comments Ratio between geometric means of Test 2 study treatment (chewable with water) and reference study treatment (coated with water).
Type of Statistical Test Non-Inferiority or Equivalence (legacy)
Comments Percent of reference to detect for 2-1 tests and power = 20%.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter ratio between geometric means
Estimated Value 78.76
Confidence Interval (2-Sided) 90%
70.53 to 87.96
Parameter Dispersion Type:
Value:
Estimation Comments Estimated value = ratio (% reference).
3. Secondary Outcome
Title Area Under the Curve From 0 to Infinity (AUC 0-inf )
Description Area under the blood concentration-time profile from time zero extrapolated to infinite time measured in nanograms *hour/milliliter (ng*hr/mL).
Time Frame Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose

Outcome Measure Data

Analysis Population Description
Participants for pharmacokinetic analysis = participants who completed all of the 3 treatment periods.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water
Measure Participants 42 42 42
Mean (Standard Deviation) [ng*hr/mL]
1547.92
(588.48)
1534.66
(618.86)
1573.81
(648.32)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Test 1: 100 mg Chewable, Without Water, Reference: 100 mg Coated, With Water
Comments Ratio between geometric means of Test 1 study treatment (chewable without water) and reference study treatment (coated with water).
Type of Statistical Test Non-Inferiority or Equivalence (legacy)
Comments Percent of reference to detect for 2-1 tests and power = 20.0%.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter ratio between geometric means
Estimated Value 99.12
Confidence Interval (2-Sided) 90%
92.76 to 105.93
Parameter Dispersion Type:
Value:
Estimation Comments Estimated value = ratio (% reference).
Statistical Analysis 2
Statistical Analysis Overview Comparison Group Selection Test 2: 100 mg Chewable, With Water, Reference: 100 mg Coated, With Water
Comments Ratio between geometric means of Test 2 study treatment (chewable with water) and reference study treatment (coated with water).
Type of Statistical Test Non-Inferiority or Equivalence (legacy)
Comments Percent of reference to detect for 2-1 tests and power = 20.0%.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter ratio between geometric means
Estimated Value 97.84
Confidence Interval (2-Sided) 90%
91.56 to 104.56
Parameter Dispersion Type:
Value:
Estimation Comments Estimated value = ratio (% reference).
4. Secondary Outcome
Title Time to Maximum Plasma Concentration (Tmax)
Description Time at which maximum plasma concentration (Cmax) occurred.
Time Frame Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose

Outcome Measure Data

Analysis Population Description
Participants for pharmacokinetic analysis = participants who completed all of the 3 treatment periods.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water
Measure Participants 42 42 42
Mean (Standard Deviation) [hours]
1.46
(0.81)
1.29
(0.71)
1.28
(0.85)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Test 1: 100 mg Chewable, Without Water, Reference: 100 mg Coated, With Water
Comments Difference in Tmax between Test 1 study treatment (chewable without water) and reference study treatment (coated with water).
Type of Statistical Test Superiority or Other (legacy)
Comments
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 0.18
Confidence Interval (2-Sided) 90%
-0.14 to 0.50
Parameter Dispersion Type:
Value:
Estimation Comments
Statistical Analysis 2
Statistical Analysis Overview Comparison Group Selection Test 2: 100 mg Chewable, With Water, Reference: 100 mg Coated, With Water
Comments Difference in Tmax between Test 2 study treatment (chewable with water) and reference study treatment (coated with water).
Type of Statistical Test Superiority or Other (legacy)
Comments
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 0.01
Confidence Interval (2-Sided) 90%
-0.27 to 0.28
Parameter Dispersion Type:
Value:
Estimation Comments
5. Secondary Outcome
Title Half-life (T 1/2)
Description Terminal elimination half-life.
Time Frame Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 5, 6, 8, and 12 hours post-dose

Outcome Measure Data

Analysis Population Description
Participants for pharmacokinetic analysis = participants who completed all of the 3 treatment periods.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water
Measure Participants 42 42 42
Mean (Standard Deviation) [hours]
2.96
(0.63)
2.84
(0.74)
2.93
(0.81)
6. Secondary Outcome
Title Number of Participants With Clinically Significant Findings in Vital Signs
Description Clinically significant abnormalities in blood pressure (BP), pulse, and temperature reported as an adverse event. Clinically significant = values outside the normal range and/or values judged as significant by the investigator (normal range: systolic BP 100-140 mmHg; diastolic BP 60- 90 mmHg; temperature 35-37°Celsius). Pulse rate based on investigator discretion.
Time Frame Day 1 (Period 1), Day 8 (Period 2), and Day 15 (Period 3): Pre-dose and 0.5, 1, 2, 4, 8 and 12 hours post-dose.

Outcome Measure Data

Analysis Population Description
Safety population: all subjects who received at least 1 dose of study medication. Although individual listing data for vital signs were collected, summary statistics were not generated for this outcome measure.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water
Measure Participants 47 47 47
Number [participants]
0
0%
1
NaN
0
NaN

Adverse Events

Time Frame
Adverse Event Reporting Description Safety population: subjects who received at least 1 dose of study medication in any treatment period. An Adverse Event (AE) term may be reported as both a serious and non-serious AE, but are distinct events. AE may = serious for 1 subject and non-serious for another subject or subject may have had a serious and non-serious episode of same event.
Arm/Group Title Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water Formulation Unspecified
Arm/Group Description Test 1 Formulation: Sildenafil citrate 100 milligram (mg) chewable tablet administered without water Test 2 Formulation: Sildenafil citrate 100 mg chewable tablet administered with water Reference Formulation: Viagra (sildenafil citrate) 100 mg coated tablet administered with water Sildenafil 100 mg tablet: formulation unspecified
All Cause Mortality
Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water Formulation Unspecified
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total / (NaN) / (NaN) / (NaN) / (NaN)
Serious Adverse Events
Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water Formulation Unspecified
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 0/47 (0%) 0/47 (0%) 0/47 (0%) 0/47 (0%)
Other (Not Including Serious) Adverse Events
Test 1: 100 mg Chewable, Without Water Test 2: 100 mg Chewable, With Water Reference: 100 mg Coated, With Water Formulation Unspecified
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 3/47 (6.4%) 3/47 (6.4%) 3/47 (6.4%) 18/47 (38.3%)
General disorders
Headache 3/47 (6.4%) 2/47 (4.3%) 2/47 (4.3%) 0/47 (0%)
Nausea 1/47 (2.1%) 0/47 (0%) 1/47 (2.1%) 0/47 (0%)
Loose stools 1/47 (2.1%) 0/47 (0%) 0/47 (0%) 0/47 (0%)
Hypotension 0/47 (0%) 1/47 (2.1%) 0/47 (0%) 0/47 (0%)
Vomiting 0/47 (0%) 0/47 (0%) 1/47 (2.1%) 0/47 (0%)
Laboratory change: urine 0/47 (0%) 0/47 (0%) 0/47 (0%) 8/47 (17%)
Laboratory change: red blood cell count 0/47 (0%) 0/47 (0%) 0/47 (0%) 4/47 (8.5%)
Laboratory change: triglycerides 0/47 (0%) 0/47 (0%) 0/47 (0%) 2/47 (4.3%)
Laboratory change: glucose 0/47 (0%) 0/47 (0%) 0/47 (0%) 3/47 (6.4%)
Laboratory change: cholesterol 0/47 (0%) 0/47 (0%) 0/47 (0%) 2/47 (4.3%)
Laboratory change: white blood cells 0/47 (0%) 0/47 (0%) 0/47 (0%) 1/47 (2.1%)
Laboratory changes unspecified 0/47 (0%) 0/47 (0%) 0/47 (0%) 2/47 (4.3%)

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.

Results Point of Contact

Name/Title Pfizer ClinicalTrials.gov Call Center
Organization Pfizer, Inc.
Phone 1-800-718-1021
Email ClinicalTrials.gov_Inquiries@pfizer.com
Responsible Party:
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
ClinicalTrials.gov Identifier:
NCT00904748
Other Study ID Numbers:
  • A1481272
  • JPJ 39/09
First Posted:
May 20, 2009
Last Update Posted:
Feb 1, 2021
Last Verified:
Jan 1, 2021