Three months of weekly rifapentine plus isoniazid for TB prevention among people with HIV.

BACKGROUND

Evidence on implementation of three months of weekly isoniazid (H, INH) and rifapentine (P, RPT) (3HP) as a TB preventive therapy (TPT) for at-risk groups in Indian programmatic conditions is limited.

METHODS

A prospective demonstration study assessing scale-up, safety, and effectiveness of 3HP TPT among people living with HIV (PLHIV) in Indian programmatic settings was conducted.

RESULTS

Of 656 screened PLHIV, 502 (77%) received 3HP. Of these, 20 (4%) discontinued TPT due to toxicity,17 (3.8%) lost to follow-up, one (0.2%) had breakthrough rifampicin-sensitive TB, and 464 (92%) completed 3 HP TPT. Of 288 (57%) overall adverse events (AEs), 46 (9%) had Grade 2 or above AEs. The median time to AE was 14 days (IQR 7-42). Serious adverse events (SAEs) were reported in 9 (2%) participants; of these, 7 (78%) were not related to 3HP. No TB episodes occurred during the 1-year follow-up period.

CONCLUSION

3HP TPT completion rate of 92%, with few adverse events leading to 3HP discontinuation, providing evidence of the scalability and safety of 3HP TPT among PLHIV in Indian health program settings.