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BIOEQUIVALENCE STUDY IN HEALTHY PARTICIPANTS COMPARING 4 MG AND 8 MG FESOTERODINE EXTENDED-RELEASE TABLETS (TOVIAZ™), MANUFACTURED AT ZWICKAU VERSUS FREIBURG

AN OPEN-LABEL, RANDOMIZED, SINGLE-DOSE, 4 PERIOD, 4 TREATMENT, 2 SEQUENCE, TWO 2 WAY CROSSOVER, BIOEQUIVALENCE STUDY IN HEALTHY PARTICIPANTS COMPARING 4 MG AND 8 MG FESOTERODINE EXTENDED RELEASE TABLETS (TOVIAZ(TM)), MANUFACTURED AT ZWICKAU VERSUS FREIBURG

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04478357
Enrollment
18
Registered
2020-07-20
Start date
2019-11-12
Completion date
2020-11-12
Last updated
2021-05-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neurogenic Detrusor Overactivity

Keywords

Phase I, Fesoterodine beads- in-capsule, bioequivalence, Pharmacokinetics, Toviaz

Brief summary

Fesoterodine (Toviaz™) extended-release (ER) tablets are currently manufactured by Aesica Pharmaceuticals, Zwickau, Germany (Zwickau). An additional manufacturing location at Pfizer Freiburg, Germany (Freiburg) has been identified. This pivotal bioequivalence (BE) study is being conducted to satisfy the United States (US) Food and Drug Administration (FDA) regulatory requirements for the qualification of the Freiburg manufacturing site. Overall Study Design This is an open-label, randomized, single-dose, 4-period, 4-treatment, 2-sequence, two 2-way crossover study in healthy participants. This study will assess the BE of Fesoterodine (Toviaz™) 4 mg and 8 mg ER tablets manufactured at Zwickau (Reference) versus Freiburg (Test). Study participants will include healthy male and/or female individuals between the ages of 18 and 55 years, inclusive. Approximately 18 participants who fulfill entry criteria will be randomized to 1 of the 2 treatment sequences as shown in the table below.

Interventions

DRUG4 mg Fesoterodine ER tablet from Zwickau

Manufactured at Zwickau

DRUG4 mg fesoterodine ER tablet from Freiburg

Manufactured at Freiburg

DRUG8 mg fesoterodine ER tablet from Zwickau

Manufactured at Zwickau

DRUG8 mg fesoterodine ER tablet from Freiburg

Manufactured at Freiburg

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
NONE

Intervention model description

This is an open-label, randomized, single-dose, 4-period, 4-treatment, 2-sequence, two 2-way crossover study in healthy participants. This study will assess the BE of Fesoterodine (Toviaz™) 4 mg and 8 mg ER tablets manufactured at Zwickau (Reference) versus Freiburg (Test). Study participants will include healthy male and/or female individuals between the ages of 18 and 55 years, inclusive. Approximately 18 participants who fulfill entry criteria will be randomized to 1 of the 2 treatment sequences as shown in the table below.

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

1. Male and female participants must be 18 to 55 years of age, inclusive, at the time of signing the informed consent document (ICD). 2. Male and female participants who are overtly healthy as determined by medical evaluation including a detailed medical history, complete physical examination, cardiovascular tests including blood pressure (BP), pulse rate measurement and 12-lead ECG, and clinical laboratory tests. 3. Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, and other study procedures. 4. Body mass index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight \>50 kg (110 lb). 5. Capable of giving signed informed consent as described in Appendix 1, which includes compliance with the requirements and restrictions listed in the informed consent document (ICD) and in this protocol.

Exclusion criteria

1. Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurological, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing). 2. Any condition possibly affecting drug absorption (eg, gastrectomy). 3. History of human immunodeficiency virus (HIV) infection, hepatitis B, or hepatitis C infection; positive testing for HIV, hepatitis B surface antigen (HBsAg), or hepatitis C antibody (HCVAb). Hepatitis B vaccination is allowed. 4. Other acute or chronic medical or psychiatric condition including recent (within the past year) or active suicidal ideation or behavior or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study. 5. History of allergy or hypersensitivity to fesoterodine fumarate or tolterodine tartrate, soya, or any of the excipients in the investigational drug product. 6. History of uncontrolled narrow angle glaucoma, myasthenia gravis, gastric retention, severe ulcerative colitis and toxic megacolon. 7. Evidence or history of clinically significant urologic disease, urinary retention, obstructive disturbance of bladder emptying, micturition disturbance, nocturia or pollacisuria (eg, benign prostate hyperplasia, urethral stricture, recurrent urinary tract infections).

Design outcomes

Primary

MeasureTime frameDescription
Cmax0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hoursMaximum Observed Plasma Concentration (Cmax) of 5-Hydroxymethyl-tolterodine (5-HMT)
AUCinf (if data permit, otherwise AUClast)0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hoursArea Under the Curve From Time Zero to Extrapolated Infinite Time \[AUC (0 - ∞)\] of 5-Hydroxymethyl-tolterodine (5-HMT)

Secondary

MeasureTime frameDescription
t1/20, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hoursPlasma Decay Half-Life (t1/2) of 5-Hydroxymethyl-tolterodine (5-HMT)
Number of Participants With Treatment Emergent Treatment-Related Adverse Events (AEs)Day -28 to day -1, 0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hours, Day 28 to 35 and on early termination
AUCLast0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hoursArea Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) of 5-Hydroxymethyl-tolterodine (5-HMT)
Number of Participants With Clinically Significant Change From Baseline in Laboratory AbnormalitiesDuring screening
Number of Participants With Clinically Significant Change From Baseline in Vital SignsDay -28 to day -1, 0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hours, Day 28 to 35 and on early termination
Tmax0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 24, 30, 36, and 48 hoursTime to Reach Maximum Observed Plasma Concentration (Tmax) of 5-Hydroxymethyl-tolterodine (5-HMT)

Countries

Belgium

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026