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Clinical Trial Summary

Background : The toll-like receptor is an essential receptor that stimulates the innate immunity response. In tuberculosis, toll-like receptors, particularly the TLR-2, and TLR-4 are crucial in recognizing various ligands with a lipoprotein structure in the bacilli. Vitamin D deficiency leads to lower expression of these receptors, Hence the immune response against Mycobacterium tuberculosis will be altered. Various studies addressed the importance of vitamin D supplementation in pulmonary tuberculosis but the effect of vitamin D in extrapulmonary tuberculosis, particularly spondylitis tuberculosis is not sufficiently identified. Objectives: To assess the effect of oral vitamin D supplementation on the expression of TLR-2, TLR-4, and clinical outcomes in spondylitis tuberculosis patients. Methodology: This study proposes a randomized clinical trial of oral vitamin D supplementation in spondylitis tuberculosis patients. Multiple arms will be established with different doses and control groups. The outcome of interest includes the clinical outcomes, the expression of TLR-2, and TLR 4 Hypothesis : It is assumed that oral supplementation of Vitamin D will increase the activation of Toll-Like Receptors and improves the clinical condition of Spondylitis Tuberculosis patients


Clinical Trial Description

Target population: Patients with spondylitis tuberculosis without the involvement of lung and other extrapulmonary infection Design: Randomized Clinical Trial with 3 arms Primary Intervention: Standardized Tuberculosis treatment with oral Vitamin D3 Supplementation daily for 8 weeks Outcome: 1. Toll-Like Receptors (TLR) 2 and 4 levels from the blood sample, measured using Enzyme-linked Immunoassay (ELISA). 2. Clinical Evaluation with Visual Analogue Scale (VAS) and Oswestry Disability Index (ODI). The outcomes will be measured three times at 4-week intervals (baseline, week 4, and week 8) Sample Size and Recruitment Participants will be recruited from hospitals and allocated by simple randomization Biological Sample and consent 1. Participants are aware that clinical data collection and biological samples will be obtained by researchers. This is mentioned in informed consent prior to study recruitment 2. Blood sample will be obtained in a standardized phlebotomy procedure and will not be retained after the study is finish. Hypothesis Sample Size Calculation: The trial will be designed to compare 2 experimental treatments to a shared control arm. The sample size was estimated based on the mathematical calculation by a study below Grayling, M.J et al With the assumption of : 1. K=2 experimental treatments will be included in the trial. 2. A significance level of α=0.05 will be used, in combination with no multiple comparison correction. 3. The event rate in the control arm will be assumed to be: λ0=5. 4. The marginal power for each null hypothesis will be controlled to level 1-β=0.8 under each of their respective least favorable configurations. 5. The interesting and uninteresting treatment effects will be δ1=2.5 and δ0=0 respectively. 6. The target allocation to each of the experimental arms will be the same as the control arm. 7. The sample size in each arm will not be required to be an integer. Hence total sample should be 37 participants Proposed Statistical Analysis 1. Descriptive Statistics 2. Bivariate Analysis 3. The study will apply intention-to-treat analysis 4. Linear Mixed model to measure the effect of intervention adjusted by fixed and random factors. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05376189
Study type Interventional
Source Hasanuddin University
Contact Jainal Arifin, MD
Phone +6281144422666
Email ia.jenal@yahoo.co.id
Status Not yet recruiting
Phase Phase 2/Phase 3
Start date July 1, 2022
Completion date February 1, 2023

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