NCT03900858

Brief Summary

Tuberculosis (TB) remains the most important infectious disease in the world. Preventive treatment plays an important role in successful control of TB. The investigators' previous study showed a 3-month weekly rifapentine and isoniazid regimen had a high protective efficacy but an unsatisfactory completion rate. Therefore, the investigators suppose that a one-month (12-dose) regimen of rifapentine and isoniazid (1RPT/INH) to be equivalent to a 3-month weekly rifapentine and isoniazid regimen with similar efficacy and higher completion rate. Relevant study is lacking in China where the TB burden is high with the incidence rate of 70/100, 000. Silicosis is a risk factor of Mycobacterium tuberculosis infection. This is an open-label, non-randomized clinical trial to evaluate the efficacy and safety of the 1RPT/INH to prevent tuberculosis (TB) compared with those who do not receive preventive treatment among silicotic patients.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
566

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Dec 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

December 1, 2018

Completed
4 months until next milestone

First Submitted

Initial submission to the registry

April 1, 2019

Completed
2 days until next milestone

First Posted

Study publicly available on registry

April 3, 2019

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 1, 2022

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2022

Completed
Last Updated

April 5, 2019

Status Verified

April 1, 2019

Enrollment Period

3.1 years

First QC Date

April 1, 2019

Last Update Submit

April 3, 2019

Conditions

Keywords

rifapentineisoniazidpreventive

Outcome Measures

Primary Outcomes (1)

  • Cumulative rate of culture-confirmed or clinically diagnosed TB disease in participants

    Cumulative rate of culture-confirmed or clinically diagnosed TB disease in participants

    3 years

Secondary Outcomes (3)

  • Percentage of participants with drug discontinuation for any reason and due to adverse drug reactions associated with 1RPT/INH

    up to 30 days after the last dose of study drug

  • Percentage of patients with Grade 3 or 4 drug toxicities and deaths associated with 1RPT/INH

    up to 30 days after the last dose of study drug

  • Percentage of participants who complete the treatment regimen

    Enrollment up to Month 1 (1RPT/INH)

Study Arms (2)

Isoniazid/ Rifapentine 3 times a week

EXPERIMENTAL

Intervention:Isoniazid/ Rifapentine 3 times a week given by DOT oral Rifapentine (450mg) plus Isoniazid (400mg) for 12 doses

Drug: Isoniazid;Rifapentine

No Intervention

NO INTERVENTION

No preventive treatment Follow up without intervention. Have already done.

Interventions

1 months (12 doses) of three-weekly rifapentine at a dose of 450mg plus isoniazid at a dose of 400mg given under direct observation

Also known as: Isoniazid I INH, Rifapentine RPT, 1RPT/INH 1HP
Isoniazid/ Rifapentine 3 times a week

Eligibility Criteria

Age18 Years - 65 Years
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Individuals with Silica exposure or diagnosed with silicosis;
  • Age between 18 to 65 years;
  • Willing to provide signed informed consent, or parental consent and participant assent.

You may not qualify if:

  • Clinical or culture confirmed active TB;
  • A history of treatment for \> 14 consecutive days with a rifamycin or \> 30 consecutive days with INH during the previous 2 years;
  • A documented history of a completing an adequate course of treatment for active TB or latent TB infection;
  • Allergy to Isoniazid, Rifampin, or Rifapentine;
  • Human immunodeficiency virus (HIV) infection;
  • History of hepatitis B/C infection or liver cirrhosis;
  • Serum Aspartic transaminase (AST) or alanine transaminase (ALT) \> 2x upper limit of normal or total bilirubin \>2.5 mg/dL;
  • Receiving immunosuppressants or biological agents;
  • Life expectancy \<3 years;
  • Mental disorder;
  • Participated in other clinical trials in recent three months;
  • Other conditions that investigates consider not suitable for participate.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Wenling No.1 People's Hospital, Zhejiang

Taizhou, Zhejiang, 317500, China

RECRUITING

Related Publications (1)

  • Ruan QL, Yang QL, Ma CL, Lin MY, Huang XT, Mao YP, Gao JM, Li JJ, Zhang XN, You ZX, Zheng QQ, Ren YF, Liu XF, Shao LY, Zhang WH. Efficacy and safety of a novel short course rifapentine and isoniazid regimen for the preventive treatment of tuberculosis in Chinese silicosis patients: a pilot study (SCRIPT-TB). Emerg Microbes Infect. 2025 Dec;14(1):2502010. doi: 10.1080/22221751.2025.2502010. Epub 2025 May 16.

MeSH Terms

Interventions

rifapentine

Study Officials

  • Wenhong Zhang, MD,PhD

    Huashan Hospital of Fudan University,Shanghai,China

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Wenhong Zhang, MD,PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director of Division of Infectious Diseases

Study Record Dates

First Submitted

April 1, 2019

First Posted

April 3, 2019

Study Start

December 1, 2018

Primary Completion

January 1, 2022

Study Completion

June 1, 2022

Last Updated

April 5, 2019

Record last verified: 2019-04

Locations