Pharmacogenomic Contributions to Trihexyphenidyl Biotransformation and Response in Children With Dystonic Cerebral Palsy

NCT ID: NCT06554288

Last Updated: 2025-07-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-15

Study Completion Date

2029-12-31

Brief Summary

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This study looks at how a medicine called trihexyphenidyl works in children with dystonic cerebral palsy. The study aims to understand how trihexyphenidyl is broken down and used in the body of pediatric patients and whether this is impacted by a person's genetics. Information from this study will also be used to design future clinical trials.

Detailed Description

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This is a 16-week single-arm nonrandomized pilot study of trihexyphenidyl in children with dystonic cerebral palsy (DCP) to 1) evaluate the pharmacokinetics (PK) of trihexyphenidyl (THP) and variation in PK parameters between CYP2D6 and CYP2C19 genotypes and 2) evaluate the feasibility of a future exposure-controlled clinical trial of THP.

Conditions

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Pediatric Disorder Genetic Predisposition Dystonia, Secondary Dystonia Cerebral Palsy, Dystonic-Rigid Cerebral Palsy, Dyskinetic Trihexyphenidyl Adverse Reaction Pharmacogenomic Drug Interaction

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Trihexyphenidyl

Participants receive trihexyphenidyl following the dose escalation schedule below:

Week 1: 0.05 mg/kg BID Week 2: 0.05 mg/kg TID Week 3: 0.1 mg/kg TID Week 4: 0.15 mg/kg TID Week 5: 0.20 mg/kg TID Week 6-15: 0.25 mg/kg TID

Group Type EXPERIMENTAL

Trihexyphenidyl

Intervention Type DRUG

6-week dose escalation up to 0.25mg/kg TID, followed by a 9-week maintenance period at this dose

Interventions

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Trihexyphenidyl

6-week dose escalation up to 0.25mg/kg TID, followed by a 9-week maintenance period at this dose

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Ages 5-17 years of age
* Diagnosis of cerebral palsy and dystonia causing interference
* Parent/legal guardian of a child with a diagnosis of cerebral palsy and dystonia
* Parent/legal guardian is willing and able to provide informed permission/assent for the study

Exclusion Criteria

* Previously or currently taking trihexyphenidyl
* Patients turning 18 years of age within the study period (16 weeks from Study Day 1)
* A language barrier for the patient that precludes communication and/or the ability to complete study-related requirements
Minimum Eligible Age

5 Years

Maximum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Kansas Medical Center

OTHER

Sponsor Role collaborator

Children's Mercy Hospital Kansas City

OTHER

Sponsor Role lead

Responsible Party

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Rose Gelineau-Morel

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Rose Gelineau-Morel, MD

Role: PRINCIPAL_INVESTIGATOR

Children's Mercy Kansas City

Locations

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Children's Mercy Hospital Kansas City

Kansas City, Missouri, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Rose Gelineau-Morel, MD

Role: CONTACT

816-302-3331

Rachel Nass

Role: CONTACT

8166011354

Facility Contacts

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Rachel Nass

Role: primary

8166011354

Other Identifiers

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STUDY00003228

Identifier Type: -

Identifier Source: org_study_id

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