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Acute Effects of Preladenant (SCH 420814) on Dyskinesia and Parkinsonism in Levodopa Treated Participants (P05550)

9. Oktober 2018 aktualisiert von: Merck Sharp & Dohme LLC

Acute Effects of SCH 420814 on Dyskinesia and Parkinsonism in Levodopa Treated Patients

This is a randomized, placebo-controlled, 3-period crossover, balanced, single-site, third party-blind study of preladenant (SCH 420814) in participants with Parkinson disease (PD) to be conducted in conformance with Good Clinical Practices. This trial will investigate the effects of single doses of preladenant and placebo on the dyskinesia and antiparkinsonian actions of a levodopa infusion. The study will examine 10 mg ("low dose") or 100 mg ("high dose") study drug, given as single, oral administrations in conjunction with intravenous (IV) levodopa infusion and oral carbidopa.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Tatsächlich)

12

Phase

  • Phase 1

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Participant must have a diagnosis of idiopathic PD based on history, exam and any relevant laboratory tests
  • Participants must have been treated with levodopa for one or more years
  • Participants must have motor fluctuations that can be measured as a 10% change in tapping speed between "on" and "off" and concurrent motor Unified PD Rating Scale (UPDRS) must also show a 20% improvement when "on"
  • Participants must have dyskinesia when "on" measured as at least 2 in one or more body parts on scale using 0 (absent) to 4 (severe) for four limbs, trunk, neck and face (total 7 body parts and 28 points)
  • Participant must be free of any clinically significant disease that would interfere with the study evaluations
  • Female participants must be postmenopausal and/or surgically sterilized and have a negative serum pregnancy test at the screening visit and a negative urine or serum pregnancy test upon each admission to the study center
  • Premenopausal, unsterilized female participants have to agree to use a medically accepted method of contraception
  • Male participants must agree to use a medically accepted method of contraception as or abstain from sexual intercourse during the trial and for 2 months after stopping the medication.

Exclusion Criteria:

  • Female participants who are pregnant, intend to become pregnant (within 3 months of ending the study), or are lactating
  • Participants with dementia (mini-mental state examination [MMSE] <23), hallucinations, confusion, major psychiatric disorders, and unstable medical conditions
  • Participants with any stable surgical or medical condition which might significantly alter the absorption, distribution, metabolism or excretion of any drug
  • Participants with a positive screen for drugs of abuse
  • Participants who are positive for hepatitis B surface antigen, hepatitis C antibodies or human immunodeficiency virus (HIV)
  • Participants who are currently participating in another medical interventional clinical study or have participated in a medical interventional clinical study within 30 days and who have previously received this compound.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Crossover-Aufgabe
  • Maskierung: Doppelt

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: SCH 420814 10 mg→SCH 420814 100 mg→Placebo
Participants were to receive their assigned experimental treatment based on randomly assigned treatment sequence at Hour 0 following an overnight withdrawal of their antiparkinsonian medications of each treatment period. The levodopa infusion was to be started at Hour 1 and was to run for 2 hours. The participants were to also receive 25 mg of carbidopa at the following times: Hours 0, 2, and 4. Treatment periods were to be separated by at least 7 days but not more than 28 days washout between each dose.
Arzneimittel: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Arzneimittel: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Arzneimittel: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Arzneimittel: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Arzneimittel: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Experimental: SCH 420814 100 mg→Placebo→ SCH 420814 10 mg
Participants were to receive their assigned experimental treatment based on randomly assigned treatment sequence at Hour 0 following an overnight withdrawal of their antiparkinsonian medications of each treatment period. The levodopa infusion was to be started at Hour 1 and was to run for 2 hours. The participants were to also receive 25 mg of carbidopa at the following times: Hours 0, 2, and 4. Treatment periods were to be separated by at least 7 days but not more than 28 days washout between each dose.
Arzneimittel: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Arzneimittel: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Arzneimittel: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Arzneimittel: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Arzneimittel: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Experimental: Placebo→SCH 420814 10 mg→SCH 420814 100 mg
Participants were to receive their assigned experimental treatment based on randomly assigned treatment sequence at Hour 0 following an overnight withdrawal of their antiparkinsonian medications of each treatment period. The levodopa infusion was to be started at Hour 1 and was to run for 2 hours. The participants were to also receive 25 mg of carbidopa at the following times: Hours 0, 2, and 4. Treatment periods were to be separated by at least 7 days but not more than 28 days washout between each dose.
Arzneimittel: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Arzneimittel: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Arzneimittel: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Arzneimittel: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Arzneimittel: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Experimental: SCH 420814 10 mg→ Placebo→ SCH 420814 100 mg
Participants were to receive their assigned experimental treatment based on randomly assigned treatment sequence at Hour 0 following an overnight withdrawal of their antiparkinsonian medications of each treatment period. The levodopa infusion was to be started at Hour 1 and was to run for 2 hours. The participants were to also receive 25 mg of carbidopa at the following times: Hours 0, 2, and 4. Treatment periods were to be separated by at least 7 days but not more than 28 days washout between each dose.
Arzneimittel: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Arzneimittel: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Arzneimittel: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Arzneimittel: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Arzneimittel: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Experimental: SCH 420814 100 mg→ SCH 420814 10 mg→Placebo
Participants were to receive their assigned experimental treatment based on randomly assigned treatment sequence at Hour 0 following an overnight withdrawal of their antiparkinsonian medications of each treatment period. The levodopa infusion was to be started at Hour 1 and was to run for 2 hours. The participants were to also receive 25 mg of carbidopa at the following times: Hours 0, 2, and 4. Treatment periods were to be separated by at least 7 days but not more than 28 days washout between each dose.
Arzneimittel: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Arzneimittel: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Arzneimittel: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Arzneimittel: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Arzneimittel: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Experimental: Placebo→ SCH 420814 100 mg→SCH 420814 10 mg
Participants were to receive their assigned experimental treatment based on randomly assigned treatment sequence at Hour 0 following an overnight withdrawal of their antiparkinsonian medications of each treatment period. The levodopa infusion was to be started at Hour 1 and was to run for 2 hours. The participants were to also receive 25 mg of carbidopa at the following times: Hours 0, 2, and 4. Treatment periods were to be separated by at least 7 days but not more than 28 days washout between each dose.
Arzneimittel: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Arzneimittel: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Arzneimittel: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Arzneimittel: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Arzneimittel: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Mean Peak Dyskinesia Score
Zeitfenster: Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period
Dyskinesia was scored on a scale of 0 (absent), 1 (mild) , 2 (moderate), 3 (severe) and 4 (incapacitating) for seven body parts (face, neck, trunk, each arm and each leg) based on the worse dyskinesia noted during the entire measurement time. Scores were assessed at Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0. The dyskinesia score was the sum of the scores for the seven body parts. The peak dyskinesia score was recorded for each participant regardless of what timepoint the score was achieved. The total possible score for an individual at each timepoint could range from 0 to 28 with higher scores indicating greater effects of the dyskinesia. The mean peak dyskinesia score was calculated using the individual peak values.
Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Mean Peak Finger Tapping Score
Zeitfenster: Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period
Tapping was measured with two manual counters with keys that were depressed to register a count. The participant alternately tapped each counter using the index finger of the more affected hand for 60 seconds and was not allowed to use more than one finger to tap. The participant was instructed to tap as rapidly as possible while being timed for 60 seconds. The counts were recorded for the two counters at Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0. The peak tapping score was recorded for each participant regardless of what timepoint the score was achieved. The mean peak finger tapping score was calculated using the individual peak values.
Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period
Mean Peak Tremor Score
Zeitfenster: Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period
Tremor was scored on a scale of 0 (absent), 1 (mild, 2 (moderate), 3 (severe) and 4 (incapacitating) for seven body parts (face, neck, trunk, each arm and each leg) based on the worse tremor observed during the time spent with participant while taking other study measurements(vital signs, drawing samples, performing the tapping and walking tasks). Scores were assessed at Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0. The tremor score was the sum of scores for seven body parts. The peak tremor score was recorded for each participant regardless of what timepoint the score was achieved. The total possible score for an individual at each timepoint could range from 0 to 28 with higher scores indicating more effects of the tremors. The mean peak tremor score was calculated using the individual peak values.
Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period
Mean Peak Walking Speed
Zeitfenster: Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period
Walking speed assessment began with the participant being seated in an armless chair. Then while being timed, the participant stood up with their arms crossed on their chest and walked 6 meters, turned around, returned to the chair and sat. Timing was stopped when the participant's buttocks hit the chair and the total time was recorded. If the participant could not arise in 60 seconds, 60 seconds was entered in this line of the report form and the participant was tested again but allowed to push off to get out of the chair. Sixty seconds was the maximum time allowed to complete the walking assessment, thus 60 seconds was recorded as the time if they could not complete the task within this time limit. Walking speed was assessed at Hours 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7.0 and 8. The peak walking speed was recorded for each participant regardless of what timepoint the score was achieved. The mean peak walking speed was calculated using the individual peak values.
Hours 0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0 and 8.0 of each treatment period

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Merck Sharp & Dohme LLC

Mitarbeiter

Oregon Health and Science University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

21. April 2009

Primärer Abschluss (Tatsächlich)

30. April 2010

Studienabschluss (Tatsächlich)

14. Mai 2010

Studienanmeldedaten

Zuerst eingereicht

13. Februar 2009

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

13. Februar 2009

Zuerst gepostet (Schätzen)

16. Februar 2009

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

7. November 2018

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

9. Oktober 2018

Zuletzt verifiziert

1. Oktober 2018

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • P05550
  • MK-3814-023 (Andere Kennung: Merck Study Number)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

JA

Beschreibung des IPD-Plans

https://www.merck.com/clinical-trials/pdf/ProcedureAccessClinicalTrialData.pdf

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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