2019
The Qualification of an Enrichment Biomarker for Clinical Trials Targeting Early Stages of Parkinson’s Disease
Stephenson D, Hill D, Cedarbaum JM, Tome M, Vamvakas S, Romero K, Conrado DJ, Dexter DT, Seibyl J, Jennings D, Nicholas T, Matthews D, Xie Z, Imam S, Maguire P, Russell D, Gordon MF, Stebbins GT, Somer E, Gallagher J, Roach A, Basseches P, Grosset D, Marek K, Consortium O. The Qualification of an Enrichment Biomarker for Clinical Trials Targeting Early Stages of Parkinson’s Disease. Journal Of Parkinson's Disease 2019, 9: 553-563. PMID: 31306141, PMCID: PMC6700608, DOI: 10.3233/jpd-191648.Peer-Reviewed Original ResearchConceptsEuropean Medicines AgencyParkinson's diseaseDopamine transporterEnrichment biomarkerClinical trialsPD subjectsParkinson's Progression Markers Initiative (PPMI) studyMotor Parkinson's diseaseParkinson Research ExaminationStriatal DAT bindingUPDRS part IISingle photon emission tomographyAppropriate patient selectionEarly Parkinson's diseaseIdiopathic PD patientsClinical trial populationsFuture clinical trialsClinical trial dataPhoton emission tomographyEarly motor symptomsTest therapeuticsIndependent predictorsTherapeutic trialsDopaminergic deficitMotor symptoms
1993
Administration of the new COMT inhibitor OR‐611 increases striatal uptake of fluorodopa
Guttman M, Léger G, Reches A, Evans A, Kuwabara H, Cedarbaum JM, Gjedde A. Administration of the new COMT inhibitor OR‐611 increases striatal uptake of fluorodopa. Movement Disorders 1993, 8: 298-304. PMID: 8341294, DOI: 10.1002/mds.870080308.Peer-Reviewed Original ResearchConceptsPositron emission tomographyNew COMT inhibitorL-DOPACOMT inhibitorsTreatment of patientsStriatal uptakeBrain uptakeBrain 6Cynomolgus monkeysParkinson's diseaseL-dopa analogEmission tomographyPromising agentSame animalsPET measurementsDiseaseMetabolismInhibitorsControl statePretreatmentPatientsFluorodopaAdjunctAdministrationUptake
1988
Clinical significance of the relationship between O-methyldopa levels and levodopa intake.
Cedarbaum J, Kutt H, McDowell F. Clinical significance of the relationship between O-methyldopa levels and levodopa intake. Neurology 1988, 38: 533-6. PMID: 3352906, DOI: 10.1212/wnl.38.4.533.Peer-Reviewed Original ResearchConceptsDaily intakeRecent clinical trialsMean daily intakeTotal daily intakeLevodopa intakeStandard SinemetClinical responseLevodopa preparationsBrain uptakeClinical trialsPlasma concentrationsClinical significanceBlood samplingLevodopaTherapeutic efficacyMethyldopa levelsControlled-release formulationPatientsIntakeTime curveAUCSinemetLevelsTrials