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Evaluating the Safety and Efficacy of Proellex® in Premenopausal Women With Symptomatic Uterine Fibroids

A Phase III, Three-Arm, Parallel Design, Placebo-Controlled, Randomized, Double-Blind, Multicenter Study Evaluating the Safety and Efficacy of Proellex® (CDB-4124) in the Treatment of Premenopausal Women With Symptomatic Uterine Fibroids

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00853567
Enrollment
71
Registered
2009-03-02
Start date
2009-02-28
Completion date
2009-08-31
Last updated
2014-08-21

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

Conditions

Uterine Fibroids

Keywords

Uterine Fibroids

Brief summary

Premenopausal women with symptomatic uterine fibroids will be randomized to either Proellex 25mg or 50mg or placebo for one treatment cycle (four months). Safety and effectiveness between 50 mg versus placebo, and between 25mg and placebo will be analyzed.

Detailed description

Subjects with documented uterine fibroids, screening UFS-QOL severity score of at least 40, and meeting other eligibility criteria will be enrolled in the study. Following screening and a pre-treatment endometrial biopsy, subjects will be assessed monthly for the four (4) month double-blinded treatment phase. The study duration is approximately six months, comprised of a one-month screening period, 4 month treatment period and one month follow-up period. Subjects' blood will be drawn in a fasting state to obtain the pre-dose trough (PK) levels of study drug at each study drug dosing/dispensation visit to determine the potential for drug accumulation.

Interventions

25 mg oral daily dose vs. 50 mg oral daily dose vs. placebo

OTHERplacebo

Placebo

Sponsors

Repros Therapeutics Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 48 Years
Healthy volunteers
No

Inclusion criteria

* Speak, read and understand English or Spanish; * Not have undergone hysterectomy, uterine arterial embolization or endometrial ablation therapy (previous myomectomy is acceptable) for any cause and no surgical interventions for uterine fibroids (e.g. hysterectomy, myomectomy, uterine arterial embolization) are planned or anticipated during the study; * One uterine fibroid must be identifiable and measurable by transvaginal ultrasound; * Menstrual cycle lasting from 24 to 36 days; * History of excessive menstrual bleeding; * Negative urine pregnancy test at screening.

Exclusion criteria

* Six months or more (immediately prior to Screening Visit) without a menstrual period; * Prior hysterectomy; * Prior bilateral oophorectomy; * Pregnant or lactating females or women who are attempting or expecting to become pregnant at any time during the study; * Documented endometriosis, active pelvic inflammatory disease (PID), platelet dysfunction, or Von Willebrand's Disease; * Any history or diagnosis of gynecological cancer or cervical dysplasia of any grade including atypical squamous cells of undetermined significance (ASCUS) associated with Human Papilloma Virus (HPV); * Subject with diagnosed or suspected carcinoma of the breast, reproductive organs or any other organ system; * Subject with known active infection with HIV, Hepatitis A, B or C, Gonorrhea, or Chlamydia or previous history of auto-immune disease or positive serum antinuclear antibodies.

Design outcomes

Primary

MeasureTime frame
To Determine the Efficacy of 50 mg Proellex® Versus Placebo in the Treatment of Subjects With Symptomatic Uterine Fibroids From Baseline to Month 4 as Determined by Scoring Changes in the Pictorial Blood Loss Assessment Chart (PBAC)4 months

Countries

United States

Participant flow

Participants by arm

ArmCount
25 g Proellex
Proellex: 25 mg oral daily dose vs. 50 mg oral daily dose vs. placebo
0
50 mg Proellex
Proellex: 25 mg oral daily dose vs. 50 mg oral daily dose vs. placebo
0
Placebo
Placebo treatment
0
Total0

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyStudy prematurely terminated71

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
— Participants
Age, Categorical
>=65 years
— Participants
Age, Categorical
Between 18 and 65 years
— Participants
Region of Enrollment
United States
— participants
Sex: Female, Male
Female
— Participants
Sex: Female, Male
Male
— Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
0 / 00 / 00 / 0
serious
Total, serious adverse events
0 / 00 / 00 / 0

Outcome results

Primary

To Determine the Efficacy of 50 mg Proellex® Versus Placebo in the Treatment of Subjects With Symptomatic Uterine Fibroids From Baseline to Month 4 as Determined by Scoring Changes in the Pictorial Blood Loss Assessment Chart (PBAC)

Time frame: 4 months

Population: Study prematurely terminated

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