CYP2D6 Pharmacogenetics in Risperidone-Treated Children
10. december 2012 opdateret af: Children's Hospital Medical Center, Cincinnati
CYP2D6 PHARMACOGENETICS IN RISPERIDONE-TREATED CHILDREN AND ADOLESCENTS WITH PSYCHIATRIC OR NEURODEVELOPMENTAL DISORDERS
Risperidone is an important medication used to treat children with psychiatric illnesses or neurodevelopmental disorders, such as autism.
Despite excellent symptom control, the potential for side effects is worrisome.
Treating these disorders is difficult because not everyone responds the same way to the same risperidone dose.
One reason for this is genetic differences in how people break down the drug.
Understanding these differences will help clinicians choose a dose and better predict the response so patients will be treated successfully with a lower risk for side effects.
This study will research these genetic differences in children with psychiatric or neurodevelopmental disorders.
Hypothesis: The inter-patient variability in risperidone pharmacokinetics and exposure, adverse events, and clinical response in patients with psychiatric or neurodevelopmental disorders is associated with identifiable pharmacogenetic factors, such as CYP2D6 single nucleotide polymorphisms (SNPs).
Studieoversigt
Status
Afsluttet
Betingelser
Undersøgelsestype
Observationel
Tilmelding (Faktiske)
47
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Ohio
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Cincinnati, Ohio, Forenede Stater, 45229
- Cincinnati Children's Hospital Medical Center
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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
3 år til 18 år (Barn, Voksen)
Tager imod sunde frivillige
Ja
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
Subjects will include up to 41 risperidone-treated children and adolescents with psychiatric or neurodevelopmental (ND) disorders who participated in one of two previous risperidone pharmacokinetics investigations.
To have a larger sample of poor metabolizer subjects, we plan to enroll at least 8 additional subjects who are on stable treatment with risperidone, and perform risperidone pharmacokinetics analyses. Prospectively enrolled subjects (n = 8) will be CYP2D6 poor metabolizers and will include White / Caucasian subjects, of any socioeconomic status, and will be recruited from inpatients or outpatients at Cincinnati Children's Hospital
Beskrivelse
Inclusion Criteria:
- Previous risperidone PK study participation (CCHMC, Rainbow Babies and Children's Hospital or OSU)
- CYP2D6 PM predicted phenotype
- Actively taking risperidone
- Under 18 years of age at time of enrollment
- Signed, dated informed consent forms
Exclusion Criteria:
- Investigators are unable to contact the subject/legal guardian(s)
- Subject is no longer taking risperidone
- CYP2D6 predicted phenotype other than PM
- Subject is non-White, with respect to race, for PK study participation
- Subject is 18 years of age or older
- Subject is less than 5 years of age
- Subject is pregnant at the time of the full PK study
- Subject/legal guardian unwilling or unable to participate in the study
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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Poor metabolizers
Patients with CYP2D6 genotypes predictive of poor metabolizer phenotype
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Non poor metabolizers
Patients with CYP2D6 genotypes predictive of intermediate, extensive, or ultra-rapid metabolizer phenotypes
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
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association of common CYP2D6 polymorphisms with risperidone area under the curve
Tidsramme: pre-dose (sample 1 = 0-30 minutes before first oral dose), and three at well-timed post-dose points (sample 2 = 15-30 minutes after dose; sample 3 = 60-90 minutes after dose; sample 4 = 4-6 hours after dose)
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pre-dose (sample 1 = 0-30 minutes before first oral dose), and three at well-timed post-dose points (sample 2 = 15-30 minutes after dose; sample 3 = 60-90 minutes after dose; sample 4 = 4-6 hours after dose)
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Shannon N Saldana, PharmD, MS, Children's Hospital Medical Center, Cincinnati
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Generelle publikationer
- Aman MG, Vinks AA, Remmerie B, Mannaert E, Ramadan Y, Masty J, Lindsay RL, Malone K. Plasma pharmacokinetic characteristics of risperidone and their relationship to saliva concentrations in children with psychiatric or neurodevelopmental disorders. Clin Ther. 2007 Jul;29(7):1476-86. doi: 10.1016/j.clinthera.2007.07.026.
- Cabovska B, Cox SL, Vinks AA. Determination of risperidone and enantiomers of 9-hydroxyrisperidone in plasma by LC-MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci. 2007 Jun 1;852(1-2):497-504. doi: 10.1016/j.jchromb.2007.02.007. Epub 2007 Feb 15.
- Sherwin CM, Saldana SN, Bies RR, Aman MG, Vinks AA. Population pharmacokinetic modeling of risperidone and 9-hydroxyrisperidone to estimate CYP2D6 subpopulations in children and adolescents. Ther Drug Monit. 2012 Oct;34(5):535-44. doi: 10.1097/FTD.0b013e318261c240.
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
1. november 2008
Primær færdiggørelse (Faktiske)
1. juni 2011
Studieafslutning (Faktiske)
1. juni 2011
Datoer for studieregistrering
Først indsendt
31. oktober 2008
Først indsendt, der opfyldte QC-kriterier
31. oktober 2008
Først opslået (Skøn)
2. november 2008
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
11. december 2012
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
10. december 2012
Sidst verificeret
1. december 2012
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 2008-0659
- SPR104683
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 .