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TB Host Directed Therapy

A Ph2 Randomized Trial to Evaluate the Safety Preliminary Efficacy and Biomarker Response of Host Directed Therapies Added to Rifabutin-modified Standard Therapy in Adults With Drug-Sensitive Smear-Positive Pulmonary TB

Status
UNKNOWN
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02968927
Acronym
TBHDT
Enrollment
200
Registered
2016-11-21
Start date
2016-11-30
Completion date
2020-12-31
Last updated
2019-01-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tuberculosis

Brief summary

To examine the safety and preliminary efficacy of multiple adjunctive host directed TB therapies (TB HDT), to assess their potential to shorten TB treatment and/or prevent permanent lung damage.

Detailed description

OBJECTIVES: To determine the safety and preliminary efficacy of 4 TB HDT candidates: 1. Safety (treatment emergent serious adverse events and SUSARs) 2. Microbiologic effects in sputum (culture conversion, change in MGIT TTP) and blood (WBA) 3. PET/CT imaging 4. Serum markers of inflammation 5. Effects on Mtb-specific and general immune function 6. Pulmonary effects (spirometry, 6MWT, O2 saturation, and St. George Respiratory Symptom Questionnaire) In each case, TB HDT effects will be determined by comparison to patients treated with standard TB therapy alone with regard to a common set of primary and secondary endpoints. PRIMARY ENDPOINTS 1. For auranofin, everolimus, and vitamin D: the proportions of patients experiencing suspected unexpected serious adverse reactions (SUSARs). 2. For CC-11050: the proportion of patients experiencing treatment emergent serious adverse events (SAEs).

Interventions

DRUGEverolimus 0.5 MG
DRUGAuranofin 6 MG
DRUGVitamin D3
DRUG2HRbZE/4HRb

Sponsors

The Aurum Institute NPC
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Willing and able to provide signed written consent or witnessed oral consent in the case of illiteracy, prior to undertaking any trial-related procedures. 2. Aged 18 to 65 years, male, or if female, either not of reproductive potential (post-menopause, or status-post surgical sterilization) or with an intrauterine contraceptive device in place. 3. Body weight (in light clothing without shoes) between 40 and 90 kg. 4. First episode of pulmonary tuberculosis diagnosed by positive sputum AFB smear with subsequent culture confirmation OR positive Xpert TB/RIF with Ct \<20 \[4\]. 5. RIF susceptibility diagnosed by Xpert TB/RIF OR Hain test 6. Chest radiograph meeting criteria for moderate or far advanced pulmonary tuberculosis \[5\] 7. HIV-1 seronegative 8. HBsAg negative

Exclusion criteria

1. Any condition for which participation in the trial, as judged by the investigator, could compromise the well-being of the subject or prevent, limit or confound protocol specified assessments 2. Current or imminent treatment for malaria. 3. Is critically ill, and in the judgment of the investigator has a diagnosis likely to result in death during the trial or the follow-up period. 4. TB meningitis or other forms of severe tuberculosis with high risk of a poor outcome as judged by the investigator. 5. History of allergy or hypersensitivity to any of the trial therapies or related substances, including known allergy or suspected hypersensitivity to rifampin or rifabutin. 6. Having participated in other clinical trials with investigational agents within 8 weeks prior to trial start or currently enrolled in an investigational trial. 7. Subjects with any of the following at screening: 1. Cardiac arrhythmia requiring medication; 2. Prolongation of QT/QTc interval with QTcF (Fridericia correction) \>450 ms; 3. History of additional risk factors for Torsade de Pointes, (e.g., heart failure, hypokalemia, family history of Long QT Syndrome); 4. Any clinically significant ECG abnormality, in the opinion of the investigator. 5. Patients requiring concomitant medications that prolong the QT inter-val. 8. Random blood glucose \>140 mg/dL, or history of unstable Diabetes Mellitus which required hospitalization for hyper- or hypoglycaemia within the past year prior to start of screening. 9. Use of systemic corticosteroids within the past 28 days. 10. Subjects with any of the following abnormal laboratory values: 1. creatinine \>2 mg/dL 2. haemoglobin \<8 g/dL 3. platelets \<100x109 cells/L 4. serum potassium \<3.5 5. aspartate aminotransferase (AST) ≥2.0 x ULN 6. alkaline phosphatase (AP) \>5.0 x ULN 7. total bilirubin \>1.5 mg/dL

Design outcomes

Primary

MeasureTime frameDescription
SAEs and SUSARsthrough day 180For auranofin, everolimus, and vitamin D: the proportions of patients experiencing suspected unexpected serious adverse reactions (SUSARs). For CC-11050: the proportion of patients experiencing treatment emergent serious adverse events (SAEs).

Secondary

MeasureTime frameDescription
TEAEs other than SAEs and SUSARsthrough day 180TEAEs other than SAEs, categorized according to severity, drug relatedness, and leading to early withdrawal.
Sputum culture status on day 56day 56Proportion of patients with positive sputum cultures on solid culture medium after 8 weeks of treatment

Other

MeasureTime frameDescription
Quantiferon gold in tubeday 56change from baseline
Change in FEV1 from baseline to 2 and 6 monthsdays 56 and 180FEV1 (% of expected value)
PD-1 expression (exploratory)days 56 and 180PD-1 expression on CD4 and CD8 lymphocytes
Gene expression profiles (exploratory)days 56 and 180Change from baseline to 2 and 6 months in gene expression profiles
18F-FDG PET/CT imaging (change from baseline to 2 months):day 56Maximum and mean standardized uptake values (SUV)
Serum neopterinday 56change from baseline b. CRP

Countries

South Africa

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 23, 2026