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Narcolepsy With CataplexyPhase 1NCT00345800

Exploratory Clinical Study to Evaluate Sodium Oxybate (Xyrem) on Potential Endocrine Changes

A Phase 1 study testing Sodium Oxybate (Xyrem) in people with Narcolepsy With Cataplexy, run by UCB Pharma SA at 1 site in Belgium.

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

To monitor for endocrine changes in response to treatment of cataplexy with Xyrem, to focus on the hypothalamic pituitary axis and to confirm the safety of Xyrem on potential endocrine changes. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Narcolepsy With Cataplexy
What is being tested?
Sodium Oxybate (Xyrem)
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
25 participants
Where
1 siteBelgium
Study dates
10 Apr 2006to 22 Jan 2008
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 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Narcoleptic patients with cataplexy

Who cannot join

  • Subjects not diagnosed with narcolepsy with cataplexy

Trial locations and contacts

1 site in 1 country.

Belgium1 site
  • Study site

    Liège

Other trials in Belgium

About this study

Official title: Single Center, Therapeutic Exploratory Clinical Trial to Evaluate the Safety of Sodium Oxybate (Xyrem) 500 mg/mL Oral Solution on Potential Endocrine Changes at Currently Labeled Therapeutic Dose Regimens (4.5 - 9 g/Day Divided Into Two Equal Doses) During 12 Weeks of Treatment of Cataplexy in Adult Patients With Narcolepsy.

To monitor for endocrine changes in response to treatment of cataplexy with Xyrem, to focus on the hypothalamic pituitary axis and to confirm the safety of Xyrem on potential endocrine changes.

Being tested
Sodium Oxybate (Xyrem)
Keywords
Endocrine Evaluation cataplexy, sodium oxybate (xyrem)
Medical subject headings
Narcolepsy

What participants receive

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

  • Sodium Oxybate (Xyrem)Drug

    Also called Xyrem

    • Active Substance: Sodium Oxybate
    • Pharmaceutical form: Oral Solution
    • Concentration: 500 mg/mL oral solution from 4.5 to 9 g/day divided into two equal doses during 12 weeks
    • Route of administration: Oral
Study groups in NCT00345800
Study groupRoleWhat they receive
Sodium OxybateExperimental* Active Substance: Sodium Oxybate * Pharmaceutical form: Oral Solution * Concentration: 500 mg/mL oral solution from 4.5 to 9 g/day divided into two equal doses during 12 weeks * Route of administration: Oral
Receives: Drug: Sodium Oxybate (Xyrem)

What is being measured

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

  1. The Insulin-like Growth Factor 1 (IGF-1) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of IGF-1 was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  2. The Insulin-like Growth Factor 1 (IGF-1) Measured in Fasting Conditions After 1 Month of Treatment (Visit 3)

    An assay of IGF-1 was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: After 1 month of treatment (Visit 3)

  3. The Insulin-like Growth Factor 1 (IGF-1) Measured in Fasting Conditions After 3 Months of Treatment (Visit 4)

    An assay of IGF-1 was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: After 3 months of treatment (Visit 4)

Secondary outcomes (33)
  1. The Circadian Rhythm of the Growth Hormone (GH) Measured at Baseline (Visit 2)

    Blood was sampled at Baseline (Visit 2) at bedtime 10:00 pm and 1, 2, 4, 8, 12, 16, and 20 hours after bedtime for assaying GH.

    Measured: Baseline (Visit 2) - approximately 1 day

  2. The Circadian Rhythm of the Growth Hormone (GH) Measured at Visit 3

    Blood was sampled predose and 1, 2, 4, 8, 12, 16, and 20 hours postdose at Visit 3 for assaying GH.

    Measured: Visit 3 (approximately 1 month)

  3. The Circadian Rhythm of the Growth Hormone (GH) Measured at Visit 4

    Blood was sampled predose and 1, 2, 4, 8, 12, 16, and 20 hours postdose at Visit 4 for assaying GH.

    Measured: Visit 4 (approximately 3 months)

  4. Cortisol Measured at Baseline (Visit 2)

    Blood was sampled at Baseline (Visit 2) at bedtime 10:00 pm and 1, 2, 4, 8, 12, 16, and 20 hours after bedtime for assaying cortisol.

    Measured: Baseline (Visit 2) - approximately 1 day

  5. Cortisol Measured at Visit 3

    Blood was sampled predose and and 1, 2, 4, 8, 12, 16, and 20 hours postdose at Visit 3 for assaying cortisol.

    Measured: Visit 3 (approximately 1 month)

  6. Cortisol Measured at Visit 4

    Blood was sampled predose and 1, 2, 4, 8, 12, 16, and 20 hours postdose at Visit 4 for assaying cortisol.

    Measured: Visit 4 (approximately 3 months)

  7. The Adrenocorticotropic Hormone (ACTH) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of ACTH was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  8. The Adrenocorticotropic Hormone (ACTH) Measured in Fasting Conditions at Visit 3

    An assay of ACTH was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  9. The Adrenocorticotropic Hormone (ACTH) Measured in Fasting Conditions at Visit 4

    An assay of ACTH was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  10. The Dehydroepiandrosterone Sulfate (DHEA-S) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of DHEA-S was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  11. The Dehydroepiandrosterone Sulfate (DHEA-S) Measured in Fasting Conditions at Visit 3

    An assay of DHEA-S was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  12. The Dehydroepiandrosterone Sulfate (DHEA-S) Measured in Fasting Conditions at Visit 4

    An assay of DHEA-S was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  13. The Prolactin Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of prolactin was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  14. The Prolactin Measured in Fasting Conditions at Visit 3

    An assay of prolactin was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  15. The Prolactin Measured in Fasting Conditions at Visit 4

    An assay of prolactin was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  16. The Thyroid Stimulating Hormone (TSH) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of TSH was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  17. The Thyroid Stimulating Hormone (TSH) Measured in Fasting Conditions at Visit 3

    An assay of TSH was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  18. The Thyroid Stimulating Hormone (TSH) Measured in Fasting Conditions at Visit 4

    An assay of TSH was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  19. The Total Thyroxin (T4) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of T4 was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  20. The Total Thyroxin (T4) Measured in Fasting Conditions at Visit 3

    An assay of T4 was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  21. The Total Thyroxin (T4) Measured in Fasting Conditions at Visit 4

    An assay of T4 was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  22. The Osmolality Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of osmolality was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  23. The Osmolality Measured in Fasting Conditions at Visit 3

    An assay of osmolality was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  24. The Osmolality Measured in Fasting Conditions at Visit 4

    An assay of osmolality was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  25. Electrolytes (Na, K, Ca) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of electrolytes was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  26. The Electrolyte Phosphate (P) Measured in Fasting Conditions at Baseline (Visit 2)

    An assay of electrolytes was done from blood sampled about 10 hours after bedtime on Visit 2.

    Measured: Baseline (Visit 2) - approximately 1 day

  27. Electrolytes (Na, K, Ca) Measured in Fasting Conditions at Visit 3

    An assay of electrolytes was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  28. The Electrolyte Phosphate (P) Measured in Fasting Conditions at Visit 3

    An assay of electrolytes was done from blood sampled about 10 hours postdose on Visit 3.

    Measured: Visit 3 (approximately 1 month)

  29. Electrolytes (Na, K, Ca) Measured in Fasting Conditions at Visit 4

    An assay of electrolytes was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  30. The Electrolyte Phosphate (P) Measured in Fasting Conditions at Visit 4

    An assay of electrolytes was done from blood sampled about 10 hours postdose on Visit 4.

    Measured: Visit 4 (approximately 3 months)

  31. The Number of Patients Reporting at Least One Adverse Event (AE) During the Course of the Study

    An AE was classified as a treatment-emergent AE (TEAE) if its onset date and time was on or after the first study drug administration. Number of subjects with at least one TEAE is reported below.

    Measured: Visit 1 through the end of the study (approximately 4 months)

  32. The Number of Patient Withdrawal Due to Adverse Events (AEs) During the Course of the Study

    An AE was classified as a treatment-emergent AE (TEAE) if its onset date and time was on or after the first study drug administration. Number of subjects with TEAE that led to temporarily discontinuation of study drug is reported below.

    Measured: Visit 1 through the end of the study (approximately 4 months)

  33. The Number of Patients Reporting at Least One Serious Adverse Event (SAE) During the Course of the Study

    A Serious Adverse Event is any untoward medical occurrence that at any dose • results in death, • is life threatening, • requires in-patient hospitalization or prolongation of existing hospitalization, • results in persistent or significant disability/incapacity • is a congenital anomaly/birth defect

    Measured: Visit 1 through the end of the study (approximately 4 months)

Timeline

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

  1. First posted29 Jun 2006 (estimated)
  2. Study start10 Apr 2006
  3. Primary completion22 Jan 2008
  4. Study completion22 Jan 2008

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
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
25 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00345800
Sponsor's protocol ID
C00301
Other IDs
2005-004417-15, 2005
Status last verified
Feb 2022
First submitted
28 Jun 2006
Last updated
8 Apr 2022
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Sodium Oxybate (Xyrem) in people with Narcolepsy With Cataplexy, run by UCB Pharma SA at 1 site in Belgium.

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 1 inclusion and 1 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 8 Apr 2022. 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 Belgium. 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 8 Apr 2022). 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?

The Insulin-like Growth Factor 1 (IGF-1) Measured in Fasting Conditions at Baseline (Visit 2) (time frame: Baseline (Visit 2) - approximately 1 day). The study lists 3 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 8 Apr 2022.

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