Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

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

9. oktober 2018 opdateret af: 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.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

12

Fase

  • Fase 1

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

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.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 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.
Medicin: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Medicin: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Medicin: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Medicin: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Medicin: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Eksperimentel: 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.
Medicin: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Medicin: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Medicin: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Medicin: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Medicin: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Eksperimentel: 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.
Medicin: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Medicin: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Medicin: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Medicin: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Medicin: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Eksperimentel: 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.
Medicin: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Medicin: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Medicin: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Medicin: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Medicin: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Eksperimentel: 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.
Medicin: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Medicin: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Medicin: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Medicin: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Medicin: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period
Eksperimentel: 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.
Medicin: SCH 420814 10 mg
one 10-mg capsule, orally, at hour 0 of treatment period
Medicin: SCH 420814 100 mg
single oral dose of four SCH 420814 25-mg capsules at hour 0 of treatment period
Medicin: Placebo
Placebo capsule, oral, at hour 0 of treatment period
Medicin: Levodopa
levodopa intravenous (IV) infusion (1 mg/kg body weight) was beginning 1 hour after study drug administration and continued for 2 hours
Medicin: Carbidopa
one 25-mg table, orally, at hours 0, 2 and 4 of each treatment period

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Mean Peak Dyskinesia Score
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Mean Peak Finger Tapping Score
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Merck Sharp & Dohme LLC

Samarbejdspartnere

Oregon Health and Science University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

21. april 2009

Primær færdiggørelse (Faktiske)

30. april 2010

Studieafslutning (Faktiske)

14. maj 2010

Datoer for studieregistrering

Først indsendt

13. februar 2009

Først indsendt, der opfyldte QC-kriterier

13. februar 2009

Først opslået (Skøn)

16. februar 2009

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

7. november 2018

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. oktober 2018

Sidst verificeret

1. oktober 2018

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • P05550
  • MK-3814-023 (Anden identifikator: Merck Study Number)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

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

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Parkinsons sygdom

Kliniske forsøg med SCH 420814 10 mg

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Chile

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner