The primary purpose of this trial is to assess the pharmacokinetic profile of NOMAC, E2 and E1 after multiple and single dose administration of the combined oral contraceptive NOMAC-E2
This trial was designed to assess the pharmacokinetic profile of NOMAC, E2 and E1 after multiple dose (MD) and single dose (SD) administration of NOMAC-E2 in healthy female volunteers. In total 25 subjects were to enter the trial. These subjects were synchronized for menstrual cycle by taking 1 tablet NOMAC-E2 (2.5 mg / 1.5 mg) daily for a minimum of 2 weeks. This was followed by a 7-day pill-free interval. After this, all subjects were to be exposed to the open-label MD treatment with 1 tablet NOMAC-E2 (2.5 mg / 1.5 mg) once daily, during 24 days. This was followed by a second pill-free interval of 10 days, to allow for sufficient washout of NOMAC-E2. On treatment day 35, 20 subjects were to receive 1 tablet NOMAC-E2 (2.5 mg / 1.5 mg) and 5 subjects were to receive a placebo tablet in a double blinded setup. After treatment day 35 and before follow-up, all subjects would again have a pill-free interval of 7 days. After follow-up, all subjects could return to their own contraceptive schedule. Follow-up took place on treatment day 42. Bleeding pattern and tablet intake were assessed by means of a subject diary to be completed on a daily basis. Blood sampling for pharmacokinetic and pharmacodynamic purposes were collected at several time points before, during and after the MD and SD period. In order to explore any possible influence of NOMAC-E2 on the QT/QTc interval, a small placebo group was designed within the SD period, to allow for comparison with the active-treated group. In addition several safety assessments (vital signs, ECGs, trans vaginal ultrasound evaluation, physical, gynecological and breast examinations, cervical smear, routine laboratory parameters and adverse events) were performed.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Enrollment
Group 1: one tablet of 2.5 mg NOMAC-E2 and 1.5 mg E2 per day on days 1-24 and day 35; Group 2: one tablet of 2.5 mg NOMAC-E2 and 1.5 mg E2 per day on days 1-24 followed by one Placebo tablet on day 35
Plasma concentrations of NOMAC and serum concentrations of E2 and E1 measured at several time points before, during and after multiple dose and after single dose administration to determine pharmacokinetics
Time frame: days 1 to 24, and days 34 - 42
Time-matched mean effects of QTcB, QTcF and QTcI values (respectively Bazett, Fredericia and Individual correction methods) compared to placebo, and time-matched changes from baseline
Time frame: Screening (week -5), days 34, 35 and 42;
Drug safety as determined by gynecological and breast examination, trans vaginal ultrasound evaluation, pregnancy test, vital signs, ECG recordings, adverse events monitoring, routine laboratory parameters
Time frame: From week -5 (screening) upto and including day 42 (followup)
Pharmacodynamics as determined by measuring serum concentrations of progesterone, luteinizing hormone (LH), follicle stimulating hormone (FSH) and sex hormone binding globulin (SHBG)
Time frame: days 1 to 24, and days 34 - 42
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