Tuberculosis
Conditions
Keywords
Tuberculosis, MDR TB
Brief summary
The objective of this study is to demonstrate that the antibacterial activity of TMC207 is better than placebo when added to a standardized Background Regimen (BR) for treatment of multi-drug resistant TB. Also safety and tolerability will be evaluated.
Detailed description
The trial will be conducted in 2 consecutive stages, an exploratory (investigative) stage (Stage 1) and a proof of effectiveness stage (Stage 2). During Stage 1, a panel of 50 participants will be randomized (participants are assigned different treatments based on chance) to receive either TMC207 or placebo for 8 weeks on top of a BR. In Stage 2, another panel of 150 participants will be randomized to receive either TMC207 or placebo for 24 weeks on top of a BR. TMC207 will be dosed as 400 mg every day for the first 2 weeks, and as 200 mg 3 times/week for the following 6 or 22 weeks during Stages 1 and 2, respectively. When the participants in Stage 1 have completed 8 weeks double-blind (neither theparticipant nor the physician knows whether drug or placebo is being taken, or at what dosage) treatment with TMC207 or placebo (or have discontinued earlier), the primary Stage 1 analysis will be performed on all data of the first 8 weeks of treatment. Following this Stage 1 analysis, Stage 2 will be initiated and a panel of 150 new participants will be enrolled. After the double-blind treatment phase in both Stage 1 and Stage 2, participants will continue to receive MDR-TB treatment as per national treatment guidelines. They will be followed for safety, tolerability, pharmacokinetics, and microbiological efficacy for 96 weeks after receiving their last dose of TMC207 or placebo. The Data Safety Monitoring Board Committee will review these data on a regular basis. The DSMB/DSMC is a group of experts in tuberculosis and clinical trial conduct who have no commercial interests in the development of TMC207 and the company (Tibotec, BVBA) that is developing the new TB drug.
Interventions
TMC207 400mg (4 tablets) once daily for 14 days, 200mg (2 tablets) three times a week for 6 or 22 weeks.
Placebo 4 tablets once daily for 14 days, 2 tablets three times a week for 6 or 22 weeks.
Background Regimen (BR) of antibacterial drugs used in the treatment of TB according to national TB program and selected at the baseline visit as speciified in the protocol for up to 96 weeks.
Sponsors
Study design
Eligibility
Inclusion criteria
* Females of non-childbearing potential * Patients with newly diagnosed sputum smear-positive pulmonary MDR-TB infection * Patients must consent to HIV-testing * Patients must be willing to discontinue all TB drugs to allow 7 days washout * Patients having normal weight * Patients are willing to be hospitalized per standard of care.
Exclusion criteria
* Previously having been treated for MDR-TB * Having a significant cardiac arrhythmia that requires medication * For HIV infected patients, having a CD4+ count \< 300 cells/µL * Patients with complicated or severe extrapulmonary manifestations of TB or neurological manifestations of TB * Patients who will require surgical procedure for management of their TB * Evidence of chorioretinitis, optic neuritis, or uveitis at screening * Having had a drug susceptibility test performed prior to screening and being not susceptible to at least 3 of the 5 classes of TB drugs used to treat MDR-TB * Women who are pregnant and/or breastfeeding.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The Time to Sputum Culture Conversion at Week 8 (Stage 1) | Week 8, Stage 1 | The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment. |
| The Time to Sputum Culture Conversion at Week 24 (Stage 2) | Week 24, Stage 2 | The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The Time to Sputum Culture Conversion at Week 24 (Stage 1) | Week 24, Stage 1 | The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment. |
| The Time to Sputum Culture Conversion at Week 72 (Stage 2) | Week 72, Stage 2 | The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment. |
| The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 8, 24, and 104 (Stage 1) | The table below shows the percentage of participants in Stage 1 who were responders to treatment. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders. |
| The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 24, Week 72, and Week 120 (Stage 2) | The table below shows the percentage of participants in Stage 2 who were responders to treatment. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders. |
Countries
Brazil, India, Latvia, Peru, Philippines, Russia, South Africa, Thailand
Participant flow
Recruitment details
This trial consisted of an exploratory stage (Stage 1) and a proof-of-efficacy stage (Stage 2). Different participants were enrolled in each stage. Participants in Stage 2 who met protocol-specified criteria were offered open-label treatment with TMC207 after Week 24 (ie, rollover arm).
Pre-assignment details
A total of 208 participants were randomized and 207 (47 participants in Stage 1 and 160 participants in Stage 2) started treatment with placebo or TMC207 (1 participant did not receive study drug). One placebo participant in Stage 2 rolled-over to treatment with TMC207 after Week 24.
Participants by arm
| Arm | Count |
|---|---|
| TMC207 / BR (Stage 1) Weeks 1 and 2: 400 mg TMC207 once daily administered as 4 tablets, and Background Regimen (BR) for Multi-drug resistant tuberculosis (MDR-TB). Week 3 to 8: 200 mg TMC207 three times per week administered as 2 tablets, and BR. Only BR after Week 8. | 23 |
| Placebo / BR (Stage 1) Weeks 1 and 2: Placebo once daily administered as 4 tablets, and Background Regimen (BR) for Multi-drug resistant tuberculosis (MDR-TB). Week 3 to 8: Placebo three times per week administered as 2 tablets, and BR. Only BR after Week 8. | 24 |
| TMC207 / BR (Stage 2) Weeks 1 and 2: 400 mg TMC207 once daily administered as 4 tablets, and Background Regimen (BR) for Multi-drug resistant tuberculosis (MDR-TB). Week 3 to 24: 200 mg TMC207 three times per week administered as 2 tablets, and BR. Only BR after Week 24. | 79 |
| Placebo / BR (Stage 2) Weeks 1 and 2: Placebo once daily administered as 4 tablets, and Background Regimen (BR) for Multi-drug resistant tuberculosis (MDR-TB). Week 3 to 24: Placebo three times per week administered as 2 tablets, and BR. Only BR after Week 24. | 81 |
| Total | 207 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 | FG002 | FG003 |
|---|---|---|---|---|---|
| Overall Study | Adverse Event | 0 | 0 | 3 | 5 |
| Overall Study | Death | 1 | 0 | 6 | 1 |
| Overall Study | Inclusion/exclusion criteria not met | 0 | 0 | 2 | 6 |
| Overall Study | Lost to Follow-up | 1 | 1 | 5 | 3 |
| Overall Study | Other | 1 | 4 | 1 | 0 |
| Overall Study | Pregnancy | 0 | 0 | 3 | 2 |
| Overall Study | Protocol Violation | 4 | 4 | 3 | 7 |
| Overall Study | Rolled-over to treatment with TMC207 | 0 | 0 | 0 | 1 |
| Overall Study | Withdrawal by Subject | 3 | 4 | 6 | 7 |
Baseline characteristics
| Characteristic | TMC207 / BR (Stage 1) | Placebo / BR (Stage 1) | TMC207 / BR (Stage 2) | Placebo / BR (Stage 2) | Total |
|---|---|---|---|---|---|
| Age, Continuous | 35.6 years STANDARD_DEVIATION 11.66 | 33.6 years STANDARD_DEVIATION 11.04 | 36.2 years STANDARD_DEVIATION 13.13 | 35.8 years STANDARD_DEVIATION 11.01 | 35.7 years STANDARD_DEVIATION 11.88 |
| Sex: Female, Male Female | 5 Participants | 7 Participants | 27 Participants | 32 Participants | 71 Participants |
| Sex: Female, Male Male | 18 Participants | 17 Participants | 52 Participants | 49 Participants | 136 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk | EG002 affected / at risk | EG003 affected / at risk |
|---|---|---|---|---|
| deaths Total, all-cause mortality | — / — | — / — | — / — | — / — |
| other Total, other adverse events | 21 / 23 | 23 / 24 | 75 / 79 | 75 / 81 |
| serious Total, serious adverse events | 1 / 23 | 1 / 24 | 18 / 79 | 15 / 81 |
Outcome results
The Time to Sputum Culture Conversion at Week 24 (Stage 2)
The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment.
Time frame: Week 24, Stage 2
Population: The modified intent-to-treat (mITT) population used for all efficacy analyses included all randomized participants who received at least 1 dose of study drug and did not have extensively drug resistant tuberculosis (XDR-TB) or non-multi-drug resistant tuberculosis (non-MDR-TB) at the start of the trial and were evaluable for efficacy.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| TMC207 / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 24 (Stage 2) | 83 Days |
| Placebo / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 24 (Stage 2) | 125 Days |
The Time to Sputum Culture Conversion at Week 8 (Stage 1)
The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment.
Time frame: Week 8, Stage 1
Population: The modified intent-to-treat (mITT) population used for all efficacy analyses included all randomized participants who received at least 1 dose of study drug and did not have extensively drug resistant tuberculosis (XDR-TB) or non-multi-drug resistant tuberculosis (non-MDR-TB) at the start of the trial and were evaluable for efficacy.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| TMC207 / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 8 (Stage 1) | 51 Days |
| Placebo / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 8 (Stage 1) | NA Days |
The Percentage of Participants With Sputum Culture Conversion (Stage 1)
The table below shows the percentage of participants in Stage 1 who were responders to treatment. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders.
Time frame: Week 8, 24, and 104 (Stage 1)
Population: The modified intent-to-treat (mITT) population used for all efficacy analyses included all randomized participants who received at least 1 dose of study drug and did not have extensively drug resistant tuberculosis (XDR-TB) or non-multi-drug resistant tuberculosis (non-MDR-TB) at the start of the trial and were evaluable for efficacy.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| TMC207 / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 8 | 47.6 Percentage of Participants |
| TMC207 / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 24 | 81.0 Percentage of Participants |
| TMC207 / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 104 (Stage 1 Trial End) | 52.4 Percentage of Participants |
| Placebo / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 8 | 8.7 Percentage of Participants |
| Placebo / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 24 | 65.2 Percentage of Participants |
| Placebo / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 1) | Week 104 (Stage 1 Trial End) | 43.5 Percentage of Participants |
The Percentage of Participants With Sputum Culture Conversion (Stage 2)
The table below shows the percentage of participants in Stage 2 who were responders to treatment. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders.
Time frame: Week 24, Week 72, and Week 120 (Stage 2)
Population: The modified intent-to-treat (mITT) population used for all efficacy analyses included all randomized participants who received at least 1 dose of study drug and did not have extensively drug resistant tuberculosis (XDR-TB) or non-multi-drug resistant tuberculosis (non-MDR-TB) at the start of the trial and were evaluable for efficacy.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| TMC207 / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 24 | 78.8 Percentage of Participants |
| TMC207 / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 72 | 71.2 Percentage of Participants |
| TMC207 / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 120 | 62.1 Percentage of Participants |
| Placebo / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 24 | 57.6 Percentage of Participants |
| Placebo / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 72 | 56.1 Percentage of Participants |
| Placebo / BR (Stage 1) | The Percentage of Participants With Sputum Culture Conversion (Stage 2) | Week 120 | 43.9 Percentage of Participants |
The Time to Sputum Culture Conversion at Week 24 (Stage 1)
The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment.
Time frame: Week 24, Stage 1
Population: The modified intent-to-treat (mITT) population used for all efficacy analyses included all randomized participants who received at least 1 dose of study drug and did not have extensively drug resistant tuberculosis (XDR-TB) or non-multi-drug resistant tuberculosis (non-MDR-TB) at the start of the trial and were evaluable for efficacy.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| TMC207 / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 24 (Stage 1) | 70 Days |
| Placebo / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 24 (Stage 1) | 126 Days |
The Time to Sputum Culture Conversion at Week 72 (Stage 2)
The table below shows the time to sputum culture conversion. Sputum culture conversion is defined as as having 2 consecutive negative cultures at least 25 days apart, not followed by a confirmed positive during the considered time period. Participants who discontinue or die during the considered time period are considered as non-responders and censored at their last assessment.
Time frame: Week 72, Stage 2
Population: The modified intent-to-treat (mITT) population used for all efficacy analyses included all randomized participants who received at least 1 dose of study drug and did not have extensively drug resistant tuberculosis (XDR-TB) or non-multi-drug resistant tuberculosis (non-MDR-TB) at the start of the trial and were evaluable for efficacy.
| Arm | Measure | Value (MEDIAN) |
|---|---|---|
| TMC207 / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 72 (Stage 2) | 86 Days |
| Placebo / BR (Stage 1) | The Time to Sputum Culture Conversion at Week 72 (Stage 2) | 168 Days |