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Pharmacokinetic Parameters of Co-trimoxazole

NCT01832987 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2014-09-16

No results posted yet for this study

Summary

Rationale:

Treatment of multidrug or extensively drug resistant tuberculosis (MDR/XDR-TB) is a real challenge as failure in response to treatment and serious side-effects are frequently encountered. New, more effective drugs with less side effects are therefore urgently needed to solve this problem. Although several new drugs against TB are in the pipeline, physicians currently have limited treatment options for treatment of complicated MDR/XDR-TB cases. Therefore, drugs developed and labeled for other infectious diseases are evaluated for TB. Co-trimoxazole consists of sulfamethoxazole and trimethoprim. Sulfamethoxazole could be effective in the treatment of tuberculosis as shown by Forgacs et al. and Huang et al.

Furthermore, with dried blood spot (DBS) analysis, the exposure to co-trimoxazole could be analyzed with only some blood drops withdrawn with a finger prick on paper. This paper is suitable for storage, transportation and subsequently analysis without additional cooling or storage requirements.

Objective:

The main objective of this prospective clinical trial is to evaluate pharmacokinetics of 960 mg co-trimoxazole in TB patients. This clinical trial will provide important information on PK of co-trimoxazole in TB patients for future studies.

The second objective is to calculate the T\>MIC and AUC0-24h/Minimal inhibitory concentration (MIC) ratio as efficacy predicting parameter. Furthermore, the analysis of dried blood spots will be clinically validated by comparing results of blood samples withdrawn from venous blood versus withdrawn by finger prick and transferred to filter paper. Retrospectively, data from this study can be used for limited sampling strategies for co-trimoxazole based on a pharmacokinetic population model constructed from the full PK curves of the patients.

Study design:

A prospective pharmacokinetic study.

Study population: 12 TB patients.

Intervention: on 4 to 6 days, 960 mg co-trimoxazole daily will be added to the normal treatment regimen.

Main study parameters/endpoints:

The pharmacokinetic parameters (Vd, Cl, AUC, etc) of co-trimoxazole are the primary endpoints of the study. The T\>MIC and AUC0-24h/Minimal inhibitory concentration (MIC) ratio are most likely the best predictive parameters for efficacy of co-trimoxazole treatment and will be calculated for a range of M tuberculosis isolates.

Conditions

Interventions

DRUG

co-trimoxazole

On 4, 5 or 6 consecutive days, co-trimoxazole 960 mg will be added to the normal treatment regimen

Sponsors & Collaborators

  • University Medical Center Groningen

    lead OTHER

Principal Investigators

  • Jan-Willem C Alffenaar, PharmD PhD · UMCG

Study Design

Allocation
NA
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
64 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2013-10-31
Primary Completion
2014-08-31
Completion
2014-08-31

Countries

  • Netherlands

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01832987 on ClinicalTrials.gov