Atorvastatin to Reduce Inflammation After Tuberculosis Treatment Completion

Tuberculosis, Pulmonary Clinical Trial

— StatinTB  

Official title:

Double-blind, Randomized, Placebo-controlled Trial to Evaluate the Safety and Efficacy of Atorvastatin to Reduce Inflammation After Tuberculosis Treatment Completion in HIV-infected and HIV-uninfected Adults Measured by FDG-PET/CT

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04147286
• Other study ID #: HREC 675/2019
• Secondary ID: RIA2017T-2004HRE
• Status: Recruiting
• Phase: Phase 2/Phase 3
• Start date: July 14, 2020
• Est. completion date: June 30, 2026

Study information

• Verified date: October 2022
• Source: University of Cape Town
• Contact: Friedrich Thienemann, MD
• Phone: +27 21 406 6358
• Email: friedrich.thienemann[@]uct.ac.za
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is a proof-of-concept phase IIB, double-blind, randomized, placebo-controlled trial to evaluate the safety and efficacy of 40 mg atorvastatin to reduce persistent lung inflammation after successful TB treatment completion in HIV-infected and HIV-uninfected adults measured by PET/CT.

Description:

Mycobacterium tuberculosis (Mtb) causes 1.8 million deaths annually. Sub-Saharan Africa carries the highest burden of tuberculosis (TB) with recurrent TB rates between 3-5% after treatment completion accounting for 10-30% of all cases within some TB control programs. Multiple risk factors have been identified to cause recurrent diseases. A recent study has identified persistent lesion activity by 18F-fluoro-D-glucose positron emission tomography (PET/CT) suggesting ongoing inflammation and Mtb mRNA suggesting ongoing infection after cure. The presence of inflammation and mRNA implies that current curative treatment options for pulmonary TB may not eradicate Mtb in most patients and more potent treatment options including host-directed therapy (HDT) to sterilize during or after TB treatment is required. Mtb accumulates host cholesterol ester in foamy macrophages and utilizes cholesterol for its persistence within macrophages. Statins lower cholesterol in cardiovascular diseases through inhibition of HMG-CoA reductase, the rate-controlling enzyme of the mevalonate pathway. In addition, statins also have broad-range immune-modulatory and anti-inflammatory properties. As previously reported in pre-clinical models that statins reduced Mtb burden by enhancing autophagy, phagosomal maturation and decreasing pulmonary pathology, suggesting a role for statins as HDT in TB. Others reported that statins as adjunctive therapy reduced the time for TB cure and decreased lung pathology in mice. A recent population-based study consisting of 1 million people reported that statin treatment was associated with a decreased risk of active TB. This protocol builds upon successful studies suggesting that directly monitoring lung pathology using PET/CT correlates better with treatment outcome than culture and persistent inflammation measured by PET/CT is present after tuberculosis cure in most patients. The investigators propose a proof-of-concept phase IIB, double-blind, randomized, placebo-controlled trial to evaluate the safety and efficacy of 40 mg atorvastatin per os daily to reduce persistent inflammation after TB treatment completion in HIV-infected and HIV-uninfected adults measured by PET/CT. If successful, this trial has proven that statins as HDT can be safe and effective adjunctive therapy to TB treatment in general and further efficacy trials can be undertaken to translate the results of this trial into reduced TB relapse rate and reduced post-TB chronic lung disease, thus decreased long-term TB-related morbidity. The investigators hypothesize that 12 weeks of 40 mg atorvastatin therapy per os initiated at the end of successful TB treatment in HIV infected and HIV-uninfected participants will significantly reduce persistent lung inflammation on PET/CT scan. Primary objective To compare persistent lung inflammation measured by total lung glycolysis (TLG) on PET/CT after 12 weeks of 40 mg atorvastatin therapy and placebo.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 220
• Est. completion date: June 30, 2026
• Est. primary completion date: June 30, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria

1. Has completed the written informed consent process prior to undergoing any pre-screening or screening evaluations and willing to undergo HIV testing

2. Age 18 to 65 years with body weight from 50 kg to 90 kg

3. Clinical response to TB treatment and sputum culture negative at week 16

4. Completed a 24-week course of standard TB treatment (4RHZE/2RH)

5. Defined as "cured" by the TB Control Program of South Africa

Laboratory parameters within 30 days before enrolment:

6. For HIV-infected participants: receiving antiretroviral therapy for at least 12 weeks and suppressed HIV viral load within 30 days prior to enrolment

7. For HIV-infected participants: CD4 counts above 350 cells/µL within 30 days prior to enrolment

8. AST and ALT <3x upper limit of normal (ULN)

9. Creatinine <2x ULN

10. Hemoglobin >7.0 g/dL

11. Platelet count >50 x109 cells/L

12. Creatinine kinase <2x ULN

13. Able and willing to return to follow-up

14. Willing to have samples, including DNA, stored

15. Willing to consistently practice a highly reliable method of pregnancy prevention Exclusion criteria

1. Acute illness

2. Fever (temperature >38.0 degrees centigrade)

3. Participant receiving any type of lipid lowering agent at the time of screening, within three months prior to screening or likely to require any lipid lowering agent in the near future.

4. Known allergy or contraindications to the investigational drug or any other statins

5. Evidence of drug-resistant TB

6. Extrapulmonary TB, including pleural TB and/or large pleural effusion

7. Pregnant or desiring/trying to become pregnant in the next 6 months

8. Unable to take oral medications

9. Diabetes as defined by point of care HbA1c=6.5, random glucose=200mg/dL (or 11.1mmol/L), fasting plasma glucose=126mg/dL (or 7.0mmol/L), or the presence of any anti-diabetic agent (including traditional medicines) as a concomitant medicine

10. Disease complications or concomitant illnesses that may compromise safety or interpretation of trial endpoints, such as known diagnosis of chronic inflammatory condition (e.g. sarcoidosis, rheumatoid arthritis, connective tissue disorder)

11. Use of immunosuppressive medications, such as TNF-alpha inhibitors or systemic or inhaled corticosteroids, within the past 2 weeks

12. Use of any investigational drug in the previous 3 months

13. Alcohol and substance abuse which might interfere with medication adherence during the trial

14. Any person for whom the physician feels this study is not appropriate

Related Conditions & MeSH terms

• Inflammation
• Tuberculosis
• Tuberculosis, Pulmonary

Intervention

Drug:
• Atorvastatin 40mg
12 weeks of 40 mg atorvastatin therapy per os
• Placebo oral tablet
Identical placebo

Locations

Country	Name	City	State
South Africa	General Medicine & Global Health, Cape Heart Institute, Faculty of Health Sciences, University of Cape Town	Observatory	WC

Sponsors (5)

Lead Sponsor	Collaborator
University of Cape Town	University of Bern, University of Namibia, University of Stellenbosch, University of Zurich

Country where clinical trial is conducted

South Africa, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Total lung glycolysis (TLG) on PET/CT imaging	The primary outcome measure is total lung glycolysis (TLG) on PET/CT imaging.; Total lung glycolysis (TLG), is the total glycolytic activity (TGA) in regions of interest (both lungs). Primary outcome measurement is semi-automated using nuclear medicine medical imaging software (MIM Software Inc.). Total lung masks are drawn on every participant's PET/CT scans. Glycolytic activity is derived for each lung (SUVbw*mL), total lung glycolytic activity is the sum of both lungs TGA.	12 weeks