Evaluating Newly Approved Drugs for Multidrug-resistant TB

NCT ID: NCT02754765

Last Updated: 2025-02-10

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE3
• Total Enrollment: 754 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2016-12-31
• Study Completion Date: 2023-06-30

Brief Summary

endTB Clinical Trial a Phase III, randomized, controlled, open-label, non-inferiority, multi-country trial evaluating the efficacy and safety of five new, all-oral, shortened regimens for multidrug-resistant tuberculosis (MDR-TB).

Detailed Description

This is a Phase III, randomized, controlled, open-label, non-inferiority, multi-country trial evaluating the efficacy and safety of new combination regimens for MDR-TB treatment.

Regimens examined combine newly approved drugs bedaquiline and/or delamanid with existing drugs known to be active against Mycobacterium tuberculosis (linezolid, clofazimine, moxifloxacin or levofloxacin, and pyrazinamide). The study will enroll in parallel across 5 experimental and 1 standard-of-care control arms. Randomization will be outcome adapted using Bayesian interim analysis of efficacy endpoints. Experimental regimens will contain bedaquiline and/or delamanid and up to 4 companion drugs. Control-arm treatment may contain one of the following (bedaquiline or delamanid) and companion drugs, constructed and delivered according to local standard of care and consistent with WHO guidelines. Trial participation in all arms will last at least until Week 73, and up to Week 104. In the experimental arms, treatment will be for 39 weeks (participants in the experimental arms will be allowed up to 47 weeks to complete the 39-week treatment course) and post-treatment follow up for up to 65 additional weeks. In the control arm, treatment will be delivered according to local standard of care (in consistence with WHO guidance); duration may vary and will be approximately 86 weeks for the conventional regimen and 39-52 weeks for the standardized shorter regimen.

Non-inferiority will be established for any experimental arm if the lower bound of the one-sided 97.5% confidence interval around the difference in favorable outcome between the control and experimental arms is greater than or equal to -12%.

Conditions

Tuberculosis, Multidrug-Resistant; Infection, Bacterial; Pulmonary Tuberculoses

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

endTB regimen 1 (BeLiMoZ)

Subjects who are randomized to this arm will receive treatment for 39 weeks and post-treatment followup for 65 weeks. Participants may take as long as 47 weeks to complete all doses of a 39-week treatment regimen. Dosing of experimental regimens will be oral and weight based. Subjects will undergo a linezoilid dose reduction randomization to either 300mg daily or 600mg three times a week after 16 weeks of treatment or after a linezolid-related AE requiring dose reduction, whichever is earlier.

Group Type: EXPERIMENTAL

Bedaquiline

Intervention Type: DRUG

Moxifloxacin

Intervention Type: DRUG

Linezolid

Intervention Type: DRUG

Pyrazinamide

Intervention Type: DRUG

endTB regimen 2 (BeLiCLeZ)

Subjects who are randomized to this arm will receive treatment for 39 weeks and post-treatment followup for 65 weeks. Participants may take as long as 47 weeks to complete all doses of a 39-week treatment regimen. Dosing of experimental regimens will be oral and weight based. Subjects will undergo a linezoilid dose reduction randomization to either 300mg daily or 600mg three times a week after 16 weeks of treatment or after a linezolid-related AE requiring dose reduction, whichever is earlier.

Group Type: EXPERIMENTAL

Bedaquiline

Intervention Type: DRUG

Clofazimine

Intervention Type: DRUG

Levofloxacin

Intervention Type: DRUG

Linezolid

Intervention Type: DRUG

Pyrazinamide

Intervention Type: DRUG

endTB regimen 3 (BeDeLiLeZ)

Subjects who are randomized to this arm will receive treatment for 39 weeks and post-treatment followup for 65 weeks. Participants may take as long as 47 weeks to complete all doses of a 39-week treatment regimen. Dosing of experimental regimens will be oral and weight based. Subjects will undergo a linezoilid dose reduction randomization to either 300mg daily or 600mg three times a week after 16 weeks of treatment or after a linezolid-related AE requiring dose reduction, whichever is earlier.

Group Type: EXPERIMENTAL

Bedaquiline

Intervention Type: DRUG

Delamanid

Intervention Type: DRUG

Levofloxacin

Intervention Type: DRUG

Linezolid

Intervention Type: DRUG

Pyrazinamide

Intervention Type: DRUG

endTB regimen 4 (DeLiCLeZ)

Subjects who are randomized to this arm will receive treatment for 39 weeks and post-treatment followup for 65 weeks. Participants may take as long as 47 weeks to complete all doses of a 39-week treatment regimen. Dosing of experimental regimens will be oral and weight based. Subjects will undergo a linezoilid dose reduction randomization to either 300mg daily or 600mg three times a week after 16 weeks of treatment or after a linezolid-related AE requiring dose reduction, whichever is earlier.

Group Type: EXPERIMENTAL

Delamanid

Intervention Type: DRUG

Clofazimine

Intervention Type: DRUG

Levofloxacin

Intervention Type: DRUG

Linezolid

Intervention Type: DRUG

Pyrazinamide

Intervention Type: DRUG

endTB regimen 5 (DeCMoZ)

Subjects who are randomized to this arm will receive treatment for 39 weeks and post-treatment followup for 65 weeks. Participants may take as long as 47 weeks to complete all doses of a 39-week treatment regimen. Dosing of experimental regimens will be oral and weight based.

Group Type: EXPERIMENTAL

Delamanid

Intervention Type: DRUG

Clofazimine

Intervention Type: DRUG

Moxifloxacin

Intervention Type: DRUG

Pyrazinamide

Intervention Type: DRUG

endTB regimen 6 (Control)

endTB regimen 6 is the control regimen.

Group Type: ACTIVE_COMPARATOR

Control arm MDR-TB regimen, consistent with WHO guidelines

Intervention Type: DRUG

Control arm MDR-TB regimen, consistent WHO guidelines

Interventions

Bedaquiline

Intervention Type: DRUG

Delamanid

Intervention Type: DRUG

Clofazimine

Intervention Type: DRUG

Levofloxacin

Intervention Type: DRUG

Moxifloxacin

Intervention Type: DRUG

Linezolid

Intervention Type: DRUG

Pyrazinamide

Intervention Type: DRUG

Control arm MDR-TB regimen, consistent with WHO guidelines

Control arm MDR-TB regimen, consistent WHO guidelines

Intervention Type: DRUG

Other Intervention Names

Sirturo; Deltyba; OPC-67683; Lamprene

Eligibility Criteria

Inclusion Criteria

A patient will be eligible for randomization if s/he:

1. Has documented pulmonary tuberculosis due to strains of M. tuberculosis resistant to rifampin (RIF) and susceptible to fluoroquinolones, diagnosed by validated rapid molecular test;

2. Is ≥ 15 years of age;

3. Is willing to use contraception: pre-menopausal women or women whose last menstrual period was within the preceding year, who have not been sterilized must agree to use contraception unless their partner has had a vasectomy; men who have not had a vasectomy must agree to use condoms;

4. Provides informed consent for study participation; additionally a legal representative of patients considered minor per local laws should also provide consent;

5. Lives in a dwelling that can be located by study staff and expects to remain in the area for the duration of the study.

Exclusion Criteria

A patient will not be eligible for randomization if s/he:

1. Has known allergies or hypersensitivity to any of the investigational drugs;

2. Is known to be pregnant or is unwilling or unable to stop breast-feeding an infant;

3. Is unable to comply with treatment or follow-up schedule;

4. Any condition (social or medical) which, in the opinion of the site principal investigator, would make study participant unsafe;

5. a. Has had exposure (intake of the drug for 30 days or more) in the past five years to bedaquiline, delamanid, linezolid, or clofazimine, or has proven or likely resistance to bedaquiline, delamanid, linezolid, or clofazimine (e.g., household contact of a DR-TB index case who died or experienced treatment failure after treatment containing bedaquiline, delamanid, linezolid, or clofazimine or had resistance to one of the listed drugs); exposure to other anti-TB drugs is not a reason for exclusion.

b. Has received second-line drugs for 15 days or more prior to screening visit date in the current MDR/RR-TB treatment episode. Exceptions include: (1) patients whose treatment has failed according to the WHO definition151 and who are being considered for a new treatment regimen; (2) patients starting a new treatment regimen after having been "lost to follow-up" according to the WHO definition149 and, (3) patients in whom treatment failure is suspected (but not confirmed according to WHO definition), who are being considered for a new treatment regimen, and for whom the Clinical Advisory Committee (CAC) consultation establishes eligibility.

6. Has one or more of the following:

• Hemoglobin ≤ 7.9 g/dL;
• Uncorrectable electrolytes disorders:
• Calcium < 7.0 mg/dL;
• Potassium < 3.0 or ≥6.0 mEq/L;
• Magnesium < 0.9 mEq/L;
• Serum creatinine > 3 x ULN;
• Aspartate Aminotransferase (AST) or Alanine Aminotransferase (ALT) ≥ 3 x ULN;
• Total bilirubin ≥ 1.5 x ULN if accompanied by AST or ALT > ULN or total bilirubin ≥ 2 x ULN when other liver function results are in the normal range;
• Grade 4 result on any of the specified laboratory tests as defined by the MSF Severity Scale.

7. Has cardiac risk factors defined as:

• A confirmed QTc interval of greater than or equal to 450 ms. Retesting to reassess eligibility will be allowed once using an unscheduled visit during the screening phase;
• Evidence of ventricular pre-excitation (e.g., Wolff Parkinson White syndrome);
• Electrocardiographic evidence of either:

• Complete left bundle branch block or right bundle branch block; OR
• Incomplete left bundle branch block or right bundle branch block and QRS complex duration greater or equal to 120 msec on at least one ECG;
• Having a pacemaker implant;
• Congestive heart failure;
• Evidence of second or third degree heart block;
• Bradycardia as defined by sinus rate less than 50 bpm;
• Personal or family history of Long QT Syndrome;
• Personal history of arrhythmic cardiac disease, with the exception of sinus arrhythmia;
• Personal history of syncope (i.e. cardiac syncope not including syncope due to vasovagal or epileptic causes).

8. Concurrent participation in another trial of any medication used or being studied for TB treatment, as defined in cited documents.

9. Is taking any medication that is contraindicated with the medicines in the trial regimen which cannot be stopped (with or without replacement) or requires a wash-out period longer than 2 weeks.

• Minimum Eligible Age: 15 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Partners in Health

OTHER

Sponsor Role: collaborator

Harvard Medical School (HMS and HSDM)

OTHER

Sponsor Role: collaborator

Epicentre

OTHER

Sponsor Role: collaborator

Institute of Tropical Medicine, Belgium

OTHER

Sponsor Role: collaborator

Socios En Salud, Peru

UNKNOWN

Sponsor Role: collaborator

Interactive Research and Development

OTHER

Sponsor Role: collaborator

Médecins Sans Frontières, France

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Lorenzo Guglielmetti, MD

Role: PRINCIPAL_INVESTIGATOR

Médecins Sans Frontières, France

Carole Mitnick, Sc.D

Role: PRINCIPAL_INVESTIGATOR

Harvard Medical School (HMS and HSDM)

Locations

National Center for Tuberculosis and Lung Diseases

Tbilisi, , Georgia

Aundh Chest Hospital

Pune, , India

City Centre of Phthisiopulmonology

Almaty, , Kazakhstan

Center of Phthisiopulmonology of Almaty Health Department

Almaty, , Kazakhstan

National Center for Tuberculosis Problems

Almaty, , Kazakhstan

Partners In Health Lesostho

Maseru, , Lesotho

The Indus Hospital

Karachi, , Pakistan

Institute of Chest Disease,

Kotri, , Pakistan

Centro de Investigación del Hospital Nacional Hipólito Unanue

Lima, , Peru

Centro de Investigación de Enfermedades Neumológicas del Hospital Nacional Sergio Bernales

Lima, , Peru

Hospital Nacional Dos de Mayo Parque Historia de la Medicina

Lima, , Peru

Medecins Sans Frontieres Belgium

Khayelitsha, , South Africa

Countries

Georgia; India; Kazakhstan; Lesotho; Pakistan; Peru; South Africa

References

Guglielmetti L, Khan U, Velasquez GE, Gouillou M, Abubakirov A, Baudin E, Berikova E, Berry C, Bonnet M, Cellamare M, Chavan V, Cox V, Dakenova Z, de Jong BC, Ferlazzo G, Karabayev A, Kirakosyan O, Kiria N, Kunda M, Lachenal N, Lecca L, McIlleron H, Motta I, Toscano SM, Mushtaque H, Nahid P, Oyewusi L, Panda S, Patil S, Phillips PPJ, Ruiz J, Salahuddin N, Garavito ES, Seung KJ, Ticona E, Trippa L, Vasquez DEV, Wasserman S, Rich ML, Varaine F, Mitnick CD; endTB Clinical Trial Team. Oral Regimens for Rifampin-Resistant, Fluoroquinolone-Susceptible Tuberculosis. N Engl J Med. 2025 Jan 30;392(5):468-482. doi: 10.1056/NEJMoa2400327.

Reference Type: DERIVED

PMID: 39879593 (View on PubMed)

Hewison C, Khan U, Bastard M, Lachenal N, Coutisson S, Osso E, Ahmed S, Khan P, Franke MF, Rich ML, Varaine F, Melikyan N, Seung KJ, Adenov M, Adnan S, Danielyan N, Islam S, Janmohamed A, Karakozian H, Kamene Kimenye M, Kirakosyan O, Kholikulov B, Krisnanda A, Kumsa A, Leblanc G, Lecca L, Nkuebe M, Mamsa S, Padayachee S, Thit P, Mitnick CD, Huerga H. Safety of Treatment Regimens Containing Bedaquiline and Delamanid in the endTB Cohort. Clin Infect Dis. 2022 Sep 29;75(6):1006-1013. doi: 10.1093/cid/ciac019.

Reference Type: DERIVED

PMID: 35028659 (View on PubMed)

Guglielmetti L, Ardizzoni E, Atger M, Baudin E, Berikova E, Bonnet M, Chang E, Cloez S, Coit JM, Cox V, de Jong BC, Delifer C, Do JM, Tozzi DDS, Ducher V, Ferlazzo G, Gouillou M, Khan A, Khan U, Lachenal N, LaHood AN, Lecca L, Mazmanian M, McIlleron H, Moschioni M, O'Brien K, Okunbor O, Oyewusi L, Panda S, Patil SB, Phillips PPJ, Pichon L, Rupasinghe P, Rich ML, Saluhuddin N, Seung KJ, Tamirat M, Trippa L, Cellamare M, Velasquez GE, Wasserman S, Zimetbaum PJ, Varaine F, Mitnick CD. Evaluating newly approved drugs for multidrug-resistant tuberculosis (endTB): study protocol for an adaptive, multi-country randomized controlled trial. Trials. 2021 Sep 25;22(1):651. doi: 10.1186/s13063-021-05491-3.

Reference Type: DERIVED

PMID: 34563240 (View on PubMed)

Seung KJ, Khan P, Franke MF, Ahmed S, Aiylchiev S, Alam M, Putri FA, Bastard M, Docteur W, Gottlieb G, Hewison C, Islam S, Khachatryan N, Kotrikadze T, Khan U, Kumsa A, Lecca L, Tassew YM, Melikyan N, Naing YY, Oyewusi L, Rich M, Wanjala S, Yedilbayev A, Huerga H, Mitnick CD. Culture Conversion at 6 Months in Patients Receiving Delamanid-containing Regimens for the Treatment of Multidrug-resistant Tuberculosis. Clin Infect Dis. 2020 Jul 11;71(2):415-418. doi: 10.1093/cid/ciz1084.

Reference Type: DERIVED

PMID: 31676905 (View on PubMed)

Provided Documents

Document Type: Informed Consent Form

View Document

Other Identifiers

MSF ERB-1555

Identifier Type: -

Identifier Source: org_study_id