Objective: Immunotherapy of tuberculosis (TB) to shorten treatment duration represents an unmet medical need. Orally delivered, tableted TB vaccine (V7) containing heat-killed (NCTC 11659) has been demonstrated in prior clinical studies to be safe and fast-acting immune adjunct.
Methods: The outcome of Phase III trial of V7 containing 10 µg of hydrolyzed was evaluated in 152 patients randomized at 2:1 ratio: V7 ( = 100), placebo ( = 52). Both arms received conventional 1st or 2nd line TB drugs co-administered with daily pill of V7 or placebo.
Results: After one month mycobacterial clearance was observed in 68% ( < 0.0001) and 23.1% ( = 0.04) of patients on V7 and placebo. Stratified conversion rates in V7 recipients with drug-sensitive and multidrug-resistant TB were 86.7% and 55.6% vs 27.2% and 15% in placebo. Patients on V7 gained on average 2.4 kg ( < 0.0001) vs 0.3 kg ( = 0.18) in placebo. Improvements in hemoglobin levels, erythrocyte sedimentation rate and leukocyte counts were significantly better than in controls. Liver function tests revealed that V7 can prevent chemotherapy-induced hepatic damage.
Conclusion: Oral is safe, can overcome TB-associated weight loss and inflammation, reduce hepatotoxicity of TB drugs, improve sputum conversion three-fold OR 3.15; 95%CI (2.3,4.6), and cut treatment length by at least six-fold. Longer follow-up studies might be needed to further substantiate our findings (Clinicaltrials.gov: NCT01977768).
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6933248 | PMC |
| http://dx.doi.org/10.1016/j.jctube.2019.100141 | DOI Listing |
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