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Healthy ParticipantsPhase 1NCT04819438

Riluzole Orodispersible Film Replicate Bioavailability

A Phase 1 study testing Riluzole 50 mg orodispersible film and Rilutek® 50 mg riluzole tablets in people with Healthy Participants, run by Cross Research S.A. at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The objective of the study is to compare the pharmacokinetic profile of riluzole after replicate single dose of the novel orodispersible film test formulation and of the marketed reference Rilutek® tablets and to evaluate their bioequivalence. Read more about this study

Who is it for?
Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Healthy Participants
What is being tested?
Riluzole 50 mg orodispersible film and Rilutek® 50 mg riluzole tablets
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
54 participants
Where
1 siteSwitzerland
Study dates
15 Jan 2021to 14 Mar 2021
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Informed consent: signed written informed consent before inclusion in the study
  • Sex and Age: men/women, 18-55 years old inclusive
  • Tobacco: non-smokers for at least 6 months prior to study screening
  • Body Mass Index (BMI): 18.5-29 kg/m2 inclusive
  • Vital signs: systolic blood pressure (SBP) 100-139 mmHg, diastolic blood pressure (DBP) 50-89 mmHg, heart rate 50-90 bpm, measured after 5 min at 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
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  • Contraception and fertility (women only): women of child-bearing potential must be using at least one of the following reliable methods of contraception:
  • A non-hormonal intrauterine device or female condom with spermicide or contraceptive sponge with spermicide or diaphragm with spermicide or cervical cap with spermicide for at least 2 months before the screening visit
  • A male sexual partner who agrees to use a male condom with spermicide
  • A sterile sexual partner Female participants of non-child-bearing potential or in post-menopausal status for at least 1 year will be admitted. For all women, pregnancy test result must be negative at screening.

Who cannot join

  • Electrocardiogram (ECG) 12-leads: (supine position) clinically significant abnormalities; corrected QT interval > 450 msec
  • Physical findings: clinically significant abnormal physical findings which could interfere with the objectives of the study
  • Laboratory analyses: clinically significant abnormal laboratory values indicative of physical illness
  • Cotinine: positive cotinine test at screening
  • Allergy: ascertained or presumptive hypersensitivity to the active principle and/or formulations' ingredients; history of anaphylaxis to drugs or allergic reactions in general, which the investigator considers may affect the outcome of the study
  • Diseases: clinically significant history or presence of renal, hepatic, gastrointestinal, cardiovascular, cerebrovascular, immunological, musculoskeletal, respiratory, skin, haematological, endocrine, psychiatric or neurological diseases or surgeries that may interfere with the aim of the study. Gastrointestinal pathologies include any clinically significant disorder of the mouth, e.g. impairment of swallowing, lesions, ulcerations, deformities, untreated dental caries
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  • Dentures: presence of mouth jewellery, dentures, braces, piercings that may interfere with successful completion of the dosing
  • Medications: medications, including over the counter medications and herbal remedies for 2 weeks before study screening; central nervous system depressants, including opioids, benzodiazepines, general anaesthetics and anticonvulsants, or cytochrome C inhibitors, including cimetidine, fluoxetine, quinidine, erythromycin, ciprofloxacin, fluconazole, ketoconazole, diltiazem and antiretroviral agents, or strong cytochrome C inducers, including barbiturates, carbamazepine, glucocorticoids, phenytoin, St John's wort and rifampin, or hormonal oral or transdermal contraceptives for 30 days before study screening; implanted, injected, intravaginal or intrauterine hormonal contraceptives for 6 months before study screening
  • Investigative drug studies: participation in the evaluation of any investigational product for 3 months before this study. The 3-month interval is calculated as the time between the first calendar day of the month that follows the last visit of the previous study and the first day of the present study
  • Blood donation: blood donations for 3 months before this study
  • Drug, alcohol, caffeine, tobacco: history of drug, alcohol [>1 drink/day for females and >2 drinks/day for males, defined according to the Dietary Guidelines 2015 ], caffeine (>5 cups coffee/tea/day) or tobacco use including any tobacco product like e-cigarettes and vamping products
  • Drug test: positive result at the drug test at screening or Day -1
  • Alcohol test: positive alcohol breath test at Day -1
  • Diet: abnormal diets (<1600 or >3500 kcal/day) or substantial changes in eating habits in the 4 weeks before this study; vegetarians and vegans
  • Pregnancy (women only): positive or missing pregnancy test at screening or Day -1, pregnant or lactating women

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • CROSS Research SA Phase 1 Unit

    Arzo, Canton Ticino, 6864

Other trials in Switzerland

About this study

Official title: Comparative Bioavailability Study of a New Riluzole Orodispersible Film vs. a Marketed Oral Reference (Rilutek® Tablets) in Healthy Male and Female Volunteers

The objective of the study is to compare the pharmacokinetic profile of riluzole after replicate single dose of the novel orodispersible film test formulation and of the marketed reference Rilutek® tablets and to evaluate their bioequivalence.

Read the detailed description

The new formulation riluzole orodispersible film is expected to fill an important medical need, since the medication can be easily administered without water and may improve patient care. Riluzole orodispersible film is easily administered, because the patient or caregiver needs only to place the film on the tongue, where it can immediately dissolve into the saliva and be ingested with intentional swallowing or during the normal reflex of swallowing, thus eliminating the need for swallowing a tablet with liquid or crushing it into soft food.

Zambon S.p.A., Italy, is sponsoring the present bioequivalence study in order to investigate the bioequivalence of the novel unit-dose product versus Rilutek® tablets, commercially available in Europe as 50 mg tablets. The dose strength for the test formulation is 50 mg, matching the 50 mg strength of the reference formulation.

The subjects will receive single oral doses of 50 mg of riluzole, as test orodispersible film and reference film-coated tablets, under fasting conditions, in each of 4 subsequent periods separated by wash-out intervals of at least 7 days between consecutive administrations, according to a 2-treatment, 4-period, replicate cross-over design.

Being tested
Riluzole 50 mg orodispersible film, Rilutek® 50 mg riluzole tablets
Keywords
Bioequivalence, Riluzole, Orodispersible film

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Riluzole 50 mg orodispersible filmDrug

    Also called Test product (T)

    Before each administration, the subjects will drink 20 mL of still mineral water in order to wet their mouth. Afterwards, using gloves, the investigator or deputy will take the orodispersible film (32.0x22.0 mm) out of the provided pouch and place the product directly on the top surface (dorsal aspect) of the subjects' tongue.

  • Rilutek® 50 mg riluzole tabletsDrug

    Also called Reference product (R)

    One film-coated tablet will be swallowed (without chewing) with 150 mL of still mineral water.

Study groups in NCT04819438
Study groupRoleWhat they receive
Reference/Test/Reference/TestExperimentalRiluzole orodispersible film (test): The subjects will be treated with one orodispersible film containing 50 mg of riluzole in two out of the four study periods according to the randomisation sequence Rilutek® (reference): The subjects will be treated with one film-coated tablet containing 50 mg of riluzole in two out of the four study periods according to the randomisation sequence.
Receives: Drug: Riluzole 50 mg orodispersible film; Drug: Rilutek® 50 mg riluzole tablets
Test/Reference/Test/ReferenceExperimentalRiluzole orodispersible film (test): The subjects will be treated with one orodispersible film containing 50 mg of riluzole in two out of the four study periods according to the randomisation sequence Rilutek® (reference): The subjects will be treated with one film-coated tablet containing 50 mg of riluzole in two out of the four study periods according to the randomisation sequence.
Receives: Drug: Riluzole 50 mg orodispersible film; Drug: Rilutek® 50 mg riluzole tablets

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Evaluation of the Bioequivalent Rate of Absorption (Cmax) of Riluzole After Replicate Single Dose Administration of Test and Reference

    For each individual, the maximum plasma concentration (Cmax) of riluzole after replicate single dose administration of Test and Reference was measured. The Cmax 90% confidence interval of the ratio Test/Reference of the population means was calculated. The bioequivalence is demonstrated when the 90% confidence Interval of this ratio lies within the range 80.00-125.00% (acceptance interval).

    Measured: 0 h (pre-dose) and 15, 30, 45 min, 1, 1.25, 1.5, 2, 3, 4, 6, 8, 12, 24 and 36 h after the drug administration

  2. Evaluation of the Bioequivalent Extent of Absorption (AUC0-t) of Riluzole After Replicate Single Dose Administration of Test and Reference.

    For each individual, the area under the concentration-time curve from single dose Test and Reference administration to the last observed concentration time t (AUC0-t) of riluzole was measured. The AUC0-t 90% confidence interval of the ratio Test/Reference of the population means was calculated. The bioequivalence is demonstrated when the 90% confidence Interval of this ratio lies within the range 80.00-125.00% (acceptance interval).

    Measured: 0 h (pre-dose), 15, 30, 45 min, 1, 1.25, 1.5, 2, 3, 4, 6, 8, 12, 24 and 36 h after drug administration

Secondary outcomes (7)
  1. To Describe the t1/2 (Half-life) of Riluzole After Replicate Single Dose Administration of Test and Reference

    To Describe the half-life of riluzole, calculated, if feasible, as ln2/λz, After Replicate Single Dose Administration of Test and Reference.

    Measured: 0 h (pre-dose), 15, 30, 45 min, 1, 1.25, 1.5, 2, 3, 4, 6, 8, 12, 24 and 36 h after drug administration

  2. To Describe the AUC0-∞ of Riluzole After Replicate Single Dose Administration of Test and Reference

    For each individual, the area under the concentration-time curve extrapolated to infinity after single dose administration of Test and Reference (AUC0-∞) was measured. The AUC0-∞ 90% confidence interval of the ratio Test/Reference of the population means was calculated. The bioequivalence is demonstrated when the 90% confidence Interval of this ratio lies within the range 80.00-125.00% (acceptance interval).

    Measured: 0 h (pre-dose), 15, 30, 45 min, 1, 1.25, 1.5, 2, 3, 4, 6, 8, 12, 24 and 36 h after drug administration

  3. Description Tmax: Time to Achieve Cmax Reference

    The results will be displayed and summarised in tables and figures.

    Measured: 0 h (pre-dose), 15, 30, 45 min, 1, 1.25, 1.5, 2, 3, 4, 6, 8, 12, 24 and 36 h after drug administration

  4. Evaluation of the Test Product Palatability

    Palatability was scored according to the following scale. Palatability evaluation description and scores (between brackets): Very unpleasant (0), Unpleasant (1), Acceptable (2), Good (3), Very good (4).

    Minimun value is 0, maximum value is 4. An higher score mean a better outcome.

    Measured: Immediately after 1st Test product administration, approximately within 5 minutes after administration

  5. Evaluation of the Test Product Palatability

    Palatability was scored according to the following scale. Palatability evaluation description and scores (between brackets): Very unpleasant (0), Unpleasant (1), Acceptable (2), Good (3), Very good (4).

    Minimun value is 0, maximum value is 4. An higher score mean a better outcome.

    Measured: Immediately after 2nd Test product administration, approximately within 5 minutes after administration

  6. Number of Participants With Mucosal Irritation

    Mouth inspections were performed before the Test administration and 30 min and 1 h after administrations of Test, to check the mucosal irritation at the application site. The outcome number shows the overall number of subjects with mucosal irritation.

    Measured: pre-dose (0), 0.5 and 1 h after the drug administration

  7. Haematology, Blood Chemistry and Urinalysis Laboratory Tests Interpretation

    Overall investigator's interpretation (as normal or abnormal and, if abnormal, clinically significant or not clinically significant).

    The following analyses were performed at screening: Leukocytes, erythrocytes, haemoglobin, haematocrit, MCV, MCH, MCHC, thrombocytes, electrolytes, enzymes (alkaline phosphatase, γ-GT, AST, ALT), total bilirubin, creatinine, glucose, urea, uric acid, total cholesterol, triglycerides, cotinine, total proteins. Serum pregnancy test (women). Urine analysis: pH, specific weight, appearance, colour, nitrites, proteins, glucose, urobilinogen, bilirubin, ketones, haematic pigments, leukocytes. Urine sediment (analysis performed only if positive): leukocytes, erythrocytes, flat cells, round cells, crystals, cylinders, mucus, bacteria. Hepatitis B (HBs antigen), Hepatitis C (HCV antibodies), HIV 1/2 (HIV Ag/Ab combo).

    The same analyses, with the exception of cotinine, urine drug test, virology and pregnancy test, were performed at the final visit

    Measured: At screening (initial visit) and at final visit (approximately 1 month)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Mar 2021
  2. Study start15 Jan 2021
  3. Primary completion14 Mar 2021
  4. Study completion14 Mar 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Model description
The study was designed in agreement with the EMA guideline "Guidance on the investigation of bioequivalence", CPMP/EWP/QWP/1401/98 Rev. 1 January 2010 (9).
Masking
None (open label)
Enrolment
54 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04819438
Sponsor's protocol ID
Z7251J01
Status last verified
Apr 2025
First submitted
8 Mar 2021
Last updated
2 May 2025
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Riluzole 50 mg orodispersible film and Rilutek® 50 mg riluzole tablets in people with Healthy Participants, run by Cross Research S.A. at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 2 May 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 May 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Evaluation of the Bioequivalent Rate of Absorption (Cmax) of Riluzole After Replicate Single Dose Administration of Test and Reference (time frame: 0 h (pre-dose) and 15, 30, 45 min, 1, 1.25, 1.5, 2, 3, 4, 6, 8, 12, 24 and 36 h after the drug administration). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 May 2025.

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