Comparative Bioavailability of Two Injectable Suspension Formulations of Medroxyprogesterone Acetate+Estradiol Cypionate

Study Overview
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Brief Summary
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This clinical trial evaluated the comparative bioavailability of two injectable suspension formulations of medroxyprogesterone acetate + estradiol cypionate, a test (Depomês®, 25 mg/mL medroxyprogesterone acetate + 5 mg/mL estradiol cypionate, Biolab Sanus Farmacêutica Ltda.) and a reference formulation (Cyclofemina®, 25 mg/0.5 mL medroxyprogesterone acetate + 5 mg/0.5 mL estradiol cypionate, Millet Roux Ltda.) in healthy female volunteers after a single intramuscular dose administration. In addition, this study also evaluated the safety and tolerability of these drugs.

Detailed Description
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This study was performed in a monocentric, open label, parallel design, with 2 treatments, 1 period, in which twelve subjects received the test product (Depomês®, 25 mg/mL medroxyprogesterone acetate + 5 mg/mL estradiol cypionate, Biolab Sanus Farmacêutica Ltda.) and twelve subjects received the reference product (Cyclofemina®, 25 mg/0.5 mL medroxyprogesterone acetate + 5 mg/0.5 mL estradiol cypionate, Millet Roux Ltda.). The formulations (test or reference) were administered in a single intramuscular dose (1 ampoule) after an overnight fast (approximately 8 h). Blood samples (9 mL) were collected via a venous catheter into heparinized tubes at times pre-dose (0 h) and 6, 12, 24, 48, 72, 96, 120, 168, 240, 288, 336, 432, 504, 672, 840, 1008, 1176, 1344, 1512, 1680, 1848, and 2016 h after drug administration to measure medroxyprogesterone; and pre-dose (-48, -24 and 0 h) e 2, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 168, 240, 288, 336, 432, 504, 672, 840, and 1008 h after drug administration to measure estradiol cypionate. The safety assessment was based on recording adverse events throughout the study duration. The subjects systolic and diastolic pressures, heart rate and temperature were determined prior and at approximately 4, 8 and 12 h after drug administration. The clinical evaluation and the laboratory tests were also performed at the end of the study.

Official Title
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Comparative Bioavailability Study of Two Injectable Suspension Formulations, a Test (Medroxyprogesterone Acetate 25 mg/mL + Estradiol Cypionate 5 mg/mL) vs. a Reference (Medroxyprogesterone Acetate 25 mg/AMP + Estradiol Cypionate 5 mg/AMP)

Conditions
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Contraception

Intervention / Treatment
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* Drug: Test formulation
* Drug: Reference formulation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Body-mass index (BMI) ≥19.0 kg/m² and ≤ 27.5 kg/m² With regular cycles, without use of hormonal contraceptives (pills at least 3 months and injectables at least 1 year) and not using hormone replacement therapy Not pregnant or breastfeeding Good state of health Non-smoker or ex-smoker for at least 6 month Written informed consent, after having been informed about benefits and potential risks of the clinical trial, as well as details of the insurance taken out to cover the subjects participating in the clinical trial Exclusion Criteria: Existing cardiac, hepatic and/or haematological diseases or pathological findings, which might interfere with the safety or tolerability and/or pharmacokinetics and/or pharmacodynamics of the active ingredient History of relevant central nervous system (CNS) and/or psychiatric disorders and/or currently treated CNS and/or psychiatric disorders Known allergic reactions to the active ingredients used or to constituents of the pharmaceutical preparations Subjects with severe allergies or multiple drug allergies, unless it is judged as not relevant for the clinical trial by the investigator Positive anti-HIV-test (if positive to be verified by western blot), HBs-AGtest (if positive to be verified by test for HBc-IgM) or anti-HCV-test Admitted for any reason up to 8 weeks before the start of the first treatment period of this study History of or current drug or alcohol dependence Subjects who are on a diet which could affect the pharmacokinetics of the active ingredient Regular intake of caffeine containing food or beverages of ≥ 500 mg caffeine per day Blood donation or other blood loss of more than 400 ml within the last 3 months prior to individual enrolment of the subject Participation in a clinical trial during the last 6 months prior to individual enrolment of the subject Positive pregnancy test, delivery or abortion in the 12 weeks prior to the planned hospitalization date. Subjects who are unable to understand the written and verbal instructions, in particular regarding the risks and inconveniences they will be exposed to during their participation in the clinical trial

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Test formulation<br>Single intramuscular dose administration (1 ampoule) of medroxyprogesterone acetate 25 mg/mL+ estradiol cypionate 5 mg/mL (Depomês®, Biolab Sanus Farmacêutica Ltda.) | Drug: Test formulation<br>* Administration of a single intramuscular dose of an injectable formulation containing medroxyprogesterone acetate 25 mg/mL + estradiol cypionate 5 mg/mL after an overnight fast.<br>|
| Active Comparator: Reference formulation<br>Single intramuscular dose administration (1 ampoule) of medroxyprogesterone acetate 25 mg/ampole + estradiol cypionate 5 mg/ampole (Cyclofemina®, Millet Roux Ltda.) | Drug: Reference formulation<br>* Administration of a single intramuscular dose of an injectable formulation containing medroxyprogesterone acetate 25 mg/ampole + estradiol cypionate 5 mg/ampole after an overnight fast.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Measurement of medroxyprogesterone acetate and estradiol cypionate plasma levels | Blood sampling for the determination of plasma levels of medroxyprogesterone acetate and estradiol cypionate in participants of each treatment group. | 0-1008 hours after drug administration | 
| Measurement of estradiol cypionate plasma levels | Blood sampling for the determination of plasma levels of estradiol cypionate in participants of each treatment group. | -48 to 1008 hours after drug administration | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Maximum Plasma Concentration (Cmax) of medroxyprogesterone acetate | Determination of maximum plasma concentration of medroxyprogesterone acetate on plasma concentrations of samples obtained. | 0 - 1008 hours after drug administration | 
| Maximum Plasma Concentration (Cmax) of estradiol cypionate | Determination of maximum plasma concentration of estradiol cypionate on plasma concentrations of samples obtained. | 0 - 1008 hours after drug administration | 
| Area Under the Curve (AUC) of medroxyprogesterone acetate | Determination of area Under the Curve of medroxyprogesterone acetate from plasma concentrations versus time curve of samples obtained. | 0 - 1008 hours after drug administration | 
| Area Under the Curve (AUC) of estradiol cypionate | Determination of area Under the Curve of estradiol cypionate from plasma concentrations versus time curves of samples obtained. | 0 - 1008 hours after drug administration | 
| Number of adverse events per participant | Number of adverse events, in each treatment group, including clinically relevant alterations of vital signs and laboratory tests results. | Up to 1008 hours after drug administration | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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medroxyprogesterone acetate, bioavailability, monthly contraceptive, estradiol cypionate