Clinical trial NCT02968927: TB Host Directed Therapy
Official title: 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
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE2
Conditions: Tuberculosis
Lead sponsor: The Aurum Institute NPC
Sponsor class: OTHER
First posted: 2016-11-21
Enrollment: 200
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

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).

Eligibility criteria: 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

Primary outcomes:
measure: SAEs and SUSARs
timeFrame: through day 180
Secondary outcomes:
measure: TEAEs other than SAEs and SUSARs
timeFrame: through day 180
measure: Sputum culture status on day 56
timeFrame: day 56
Other outcomes:
measure: Change in FEV1 from baseline to 2 and 6 months
timeFrame: days 56 and 180
measure: 18F-FDG PET/CT imaging (change from baseline to 2 months):
timeFrame: day 56
measure: Serum neopterin
timeFrame: day 56
measure: Quantiferon gold in tube
timeFrame: day 56
measure: Gene expression profiles (exploratory)
timeFrame: days 56 and 180
measure: PD-1 expression (exploratory)
timeFrame: days 56 and 180
Locations:
city: Tembisa
country: South Africa
facility: The Aurum Institute: Tembisa Clinical Research Centre
state: Gauteng
Study officials:
affiliation: The Aurum Institute NPC
name: Robert S Wallis, MD,FIDSA
role: PRINCIPAL_INVESTIGATOR
References:
citation: Wallis RS, Ginindza S, Beattie T, Arjun N, Likoti M, Edward VA, Rassool M, Ahmed K, Fielding K, Ahidjo BA, Vangu MDT, Churchyard G. Adjunctive host-directed therapies for pulmonary tuberculosis: a prospective, open-label, phase 2, randomised controlled trial. Lancet Respir Med. 2021 Aug;9(8):897-908. doi: 10.1016/S2213-2600(20)30448-3. Epub 2021 Mar 16.