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About
Objectives:
The objective of the study was to investigate the bioequivalence between two formulations containing ketoprofen lysine salt (KLS) when administered as single oral doses in two consecutive study periods to healthy male and female volunteers under fasting conditions.
Primary end-point: to evaluate the bioequivalent rate (Cmax) and extent (AUC0-t) of absorption of ketoprofen after single dose administration of test and reference products.
Secondary end-points:
Full description
This was a single centre, single dose, open, randomised, two-way cross-over, two-stage bioequivalence study. According to the two-stage design of the study, an initial group of subjects was treated in study stage 1 and data were analysed. Since bioequivalence was demonstrated, according to the protocol the study was terminated after stage 1, and stage 2 was not performed.
The study was conducted as planned and consisted of a screening visit, a treatment phase of 2 study periods separated by a wash-out interval of at least 4 days and a final visit / early termination visit (ETV).
Considering the lack of information about the PK profile of the new formulation, it was decided to use a "two stage" bioequivalence study design, that allows a re-calculation of the sample size in case the number of subjects initially enrolled in the study is not large enough to provide a reliable answer to the questions addressed, due to a possible underestimation of the variability or misleading estimation of the point estimate for the test/reference ratio of the geometric means.
The sequence of treatments in the two study periods was assigned to each randomised subject according to a computer generated randomisation list.
A wash-out period of at least 4 days between the two administrations is justified by the elimination half-life of the ketoprofen (1-2 h).
Enrollment
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Volunteers
Inclusion criteria
To be enrolled in this study, subjects must fulfil all these criteria:
Informed consent: signed written informed consent before inclusion in the study
Sex and Age: males/females, 18-55 years old inclusive
Body Mass Index (BMI): 18.5-30 kg/m2 inclusive
Vital signs: systolic blood pressure (SBP) 100-139 mmHg, diastolic blood pressure (DBP) 50-89 mmHg, pulse rate (PR) 50-90 bpm and body temperature (BT) ≤ 37.5° C, measured after 5 min of rest in the sitting position;
Full comprehension: ability to comprehend the full nature and purpose of the study, including possible risks and side effects; ability to co-operate with the investigator and to comply with the requirements of the entire study
Contraception and fertility (females only): females of child-bearing potential and with an active sexual life must be using at least one of the following reliable methods of contraception:
Female participants of non-child-bearing potential or in post-menopausal status for at least 1 year will be admitted. For all female subjects, pregnancy test result must be negative at screening.
Exclusion criteria
Subjects meeting any of these criteria will not be enrolled in the study:
Primary purpose
Allocation
Interventional model
Masking
30 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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