Prioritising attributes for tuberculosis preventive treatment regimens: a modelling analysis

Area of Science:

• Public Health
• Infectious Disease Epidemiology
• Pharmaceutical Development

Background:

• Recent advancements in tuberculosis (TB) preventive treatment regimens necessitate further research.
• Developing target product profiles for future regimens is crucial for maximizing epidemiological impact.

Purpose of the Study:

• To identify and evaluate key regimen properties influencing the epidemiological impact of future TB preventive treatments.
• To guide the development of optimal preventive treatment regimens for global TB control efforts.

Main Methods:

• Expert consultation identified five key regimen properties: duration, efficacy, adherence, forgiveness, and resistance barrier.
• Mathematical modeling was used to assess the impact of these properties on TB incidence reduction in four diverse countries.
• Scenarios for minimally acceptable and optimal performance were defined for each property.

Main Results:

• Regimen efficacy emerged as the most critical factor for epidemiological impact.
• Ease-of-adherence (treatment completion) was identified as a significant secondary factor.
• Findings were consistent across different country settings and robust to various model assumptions.

Conclusions:

• Understanding the drivers of epidemiological impact is essential for improving TB preventive treatment.
• Future regimens that prioritize efficacy and adherence can significantly contribute to global TB elimination goals.