Metabolism and Pharmacokinetics of Primaquine Enantiomers in Human Volunteers Receiving a Seven Day Dose Regimen

NCT ID: NCT03934450

Last Updated: 2019-05-14

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

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-08-17

Study Completion Date

2019-05-01

Brief Summary

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To investigate the comparative tolerability, metabolism and pharmacokinetics of individual enantiomers of PQ in healthy human volunteers, receiving study drug over the course of 7 days.

Detailed Description

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The primary objective of this project is to investigate the comparative tolerability, metabolism and pharmacokinetics of individual enantiomers of PQ in healthy human volunteers. Based on the results of this study, if one enantiomer seems to show a better safety profile (in terms of hematological effects), an analogous study will be carried out in G6PD deficient individuals (under a separate protocol). The studies are primarily aimed at understanding the tolerability and safety of the enantiomers in G6PD deficiency. If one shows a better safety profile, ultimately the evaluation of its efficacy will be required.

Conditions

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Malaria Glucose 6 Phosphate Dehydrogenase Deficiency

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

CROSSOVER

This study is a single center, prospective, cross-over phase 1 trial. Thirty-six participants will be enrolled into a two Cohort pharmacokinetic study evaluating the metabolism, pharmacokinetic behavior and tolerability of two dose levels (low/high) of primaquine enantiomers (and placebo) over the course of 7 days.

Placebo will be added in order to assess tolerability of enantiomers. Placebo control is needed in non-drug related clinical responses.
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants
Participants will not be able to know the sequence of the drug adminstration

Study Groups

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RPQ (-) enantiomer

Cohort 1 will receive 15 mg of RPQ (3A) every day for 7 days Cohort 2 will receive 22.5 mg of RPQ (3A) every day for 7 days

Group Type EXPERIMENTAL

RPQ

Intervention Type DRUG

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

SPQ (+) enantiomer

Cohort 1 will receive 15 mg of SPQ (2A) every day for 7 days Cohort 2 will receive 22.5 mg of SPQ (2A) every day for 7 days

Group Type EXPERIMENTAL

SPQ

Intervention Type DRUG

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Primaquine Phosphate

Cohort 1 will receive 30 mg of RSPQ (1A) every day for 7 days Cohort 2 will receive 45 mg of RSPQ (1A) every day for 7 days

Group Type ACTIVE_COMPARATOR

Primaquine Phosphate

Intervention Type DRUG

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Placebo

Cohort 1 will receive placebo (4A) capsules everyday for seven days Cohort 2 will receive placebo (4A) capsules everyday for seven days

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Interventions

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RPQ

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Intervention Type DRUG

SPQ

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Intervention Type DRUG

Primaquine Phosphate

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Intervention Type DRUG

Placebo

The study will compare the individual enantiomers of primaquine - R- (-)-PQ, S-(+)-PQ, and Placebo along with the racemic version.

Intervention Type DRUG

Other Intervention Names

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R-(-) Enantiomer of Primaquine Phosphate S-(+) Enantiomer of Primaquine Phosphate Racemic Primaquine

Eligibility Criteria

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Inclusion Criteria

* Normal, healthy adults aged 18 to 65 years

Exclusion Criteria

* Known history of liver, kidney or hematological disease
* Known history of cardiac disease, Non Sinus Rhythm arrhythmia or QT prolongation
* Autoimmune disorders
* Report of an active infection
* Evidence of G6PD deficiency
* Participant is pregnant or breast-feeding, or is expecting to conceive during the study.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Mississippi, Oxford

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Larry Walker, Phd

Role: PRINCIPAL_INVESTIGATOR

University of Mississippi Medical Center

Locations

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University of Mississippi

University, Mississippi, United States

Site Status

Countries

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United States

Other Identifiers

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PQ Study 2

Identifier Type: -

Identifier Source: org_study_id

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