Early Bactericidal Activity of TBA-7371 in Pulmonary Tuberculosis
Study Details
Study Description
Brief Summary
The purpose of this study is to assess the safety, early bactericidal activity (EBA) and pharmacokinetics of TBA-7371 in adult participants with rifampicin-sensitive tuberculosis and select dose regimen(s) for future studies.
Condition or Disease | Intervention/Treatment | Phase |
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Phase 2 |
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Experimental: TBA-7371 100 mg QD
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Drug: TBA-7371
Participants will receive TBA-7371 oral suspension 100 milligram (mg) once daily (QD) for 14 days.
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Experimental: TBA-7371 100 mg BID
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Drug: TBA-7371
Participants will receive TBA-7371 oral suspension 100 mg twice daily (BID) for 14 days.
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Experimental: TBA-7371 200 mg QD
|
Drug: TBA-7371
Participants will receive TBA-7371 oral suspension 200 mg QD for 14 days.
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Experimental: TBA-7371 100 mg TID
|
Drug: TBA-7371
Participants will receive TBA-7371 oral suspension 100 mg three times daily (TID) for 14 days.
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Experimental: TBA-7371 400 mg QD
|
Drug: TBA-7371
Participants will receive TBA-7371 oral suspension 400 mg QD for 14 days.
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Active Comparator: HRZE
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Drug: HRZE
Participants will receive Isoniazid [H] / rifampicin [R] / pyrazinamide [Z] / ethambutol [E] (HRZE), a fixed dose combination (H: 75 mg / R: 150 mg / Z: 400 mg / E: 275 mg) tablet QD for 14 days.
Other Names:
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Outcome Measures
Primary Outcome Measures
- Slope of Average Change per Day, From Day 0 to Day 14 [BAcfu (0-14)] of the Log Colony Forming Units (CFU) Counts [Day 0 (screening) to Day 14]
- Number of Participants who Experienced One or More Severe (≥ grade 3) and/or Serious Adverse Events (SAEs) [Day 1 through Day 15]
Secondary Outcome Measures
- Slope of Average Change per Day, From Day 0 to Day 2 [BAcfu (0-2)] and From Day 2 to Day 14 [BAcfu (2-14)] of the Log CFU Counts [Day 0 (Screening) to Day 2 and Day 2 to Day 14]
- Slope of the Time to Sputum Culture Positivity (TPP) in the Mycobacteria Growth Indicator Tube (MGIT) System From Day 0 to Day 14 [BAttp (0-14)], From Day 0 to Day 2 [BAttp (0-2)], and From Day 2 to Day 14 [BAttp (2-14)] [Day 0 (Screening) to Day 14, Day 0 (Screening) to Day 2 and Day 2 to Day 14]
- Slope of the Log Concentration of Sputum LipoArabinoMannan (LAM) From Day 0 to day 14 [BAlam (0-14)], From Day 0 to Day 2 [BAlam (0-2)], and From Day 2 to Day 14 [BAlam (2-14)] [Day 0 (Screening) to Day 14, Day 0 (Screening) to Day 2 and Day 2 to Day 14]
- Number of Participants With Adverse Events (AEs) and Frequency of AEs [Day 1 through Day 15]
- Frequency of Participants With Any New Eye Symptom in One or Both Eyes [Day 1 through day 15]
- Mean and Frequency Distribution of Duration of Each Eye Symptom [Day 1 through day 15]
- Mean and Frequency Distribution of Percentage of Days With Any Eye Symptom and Each of the Eye Symptoms [Day 1 through day 15]
- Mean Change in Visual Acuity Score From Screening to Lowest Score [Day 1 through day 15]
- Median Change in Visual Acuity Score From Screening to Lowest Score [Day 1 through day 15]
- Mean Changes in Color Vision Score From Screening to Lowest Score [Day 1 through day 15]
- Median Changes in Color Vision Score From Screening to Lowest Score [Day 1 through day 15]
- Mean and Frequency Distribution of Changes in Heart Rate (HR) [Day 1 through day 15]
- Mean and Frequency Distribution of Changes in Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) [Day 1 through day 15]
- Number of Participants With ≥ 25 % Increase in HR, Decrease in SBP, Decrease in DBP [Day 1 through day 15]
- Mean and Frequency Distribution of Percentage of Days With ≥ 25% Increase in HR, Decrease in SBP, Decrease in DBP [Day 1 through day 15]
- Mean/median Change in PR, RR, QRS, QT, QTcF Values From Baseline ECG [Day 0 (screening) Through Day 15]
- Mean Change in HR [Day 1 to days 4, 7, 10, 14 and 15]
- Mean Change in SBP and DBP [Day 1 to days 4, 7, 10, 14 and 15]
- Change in Number of Participants With Eye Symptoms (All, Severe, Serious) [Day 1 to days 4, 7, 10, 14 and 15]
- Change in Mean Visual Acuity Score [Day 1 to days 4, 7, 10, 14 and 15]
- Change in Mean Color Vision Score [Day 1 to days 4, 7, 10, 14 and 15]
- Mean Change in HR [Day 0 (Screening) to days 28 and 42; and from day 14 to days 28 and 42]
- Mean Change in SBP and DBP [Day 0 (Screening) to days 28 and 42; and from day 14 to days 28 and 42]
- Change in Number of Participants with Eye Symptoms (All, Severe, Serious) [Day 0 (Screening) to days 28 and 42; and from days 1-15 (combined) to days 28-42 (combined)]
- Change in Mean Visual Acuity Score [Day 0 (Screening) to days 28 and 42; and from days 1-15 (combined) to days 28-42 (combined)]
- Change in Mean Color Vision Score [Day 0 (Screening) to days 28 and 42; and from days 1-15 (combined) to days 28-42 (combined)]
- Mean Concentration of Clinical Safety Haematology Parameter: Red Blood Cells [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Haematology Parameter: Red Blood Cells [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Red Blood Cells [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Red Blood Cells [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Haematology Parameter: Haemoglobin [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Haematology Parameter: Haemoglobin [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Haemoglobin [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Haemoglobin [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Haematology Parameter: Platelets [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Haematology Parameter: Platelets [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Platelets [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Platelets [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Haematology Parameter: White Blood Cells [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Haematology Parameter: White Blood Cells [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: White Blood Cells [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: White Blood Cells [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Levels of Clinical Safety Haematology Parameter: Neutrophils [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Levels of Clinical Safety Haematology Parameter: Neutrophils [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Neutrophils [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Neutrophils [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Levels of Clinical Safety Haematology Parameter: Lymphocytes [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Levels of Clinical Safety Haematology Parameter: Lymphocytes [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Lymphocytes [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Lymphocytes [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Levels of Clinical Safety Haematology Parameter: Monocytes [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Levels of Clinical Safety Haematology Parameter: Monocytes [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Monocytes [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Monocytes [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Levels of Clinical Safety Haematology Parameter: Eosinophils [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Levels of Clinical Safety Haematology Parameter: Eosinophils [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Eosinophils [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Eosinophils [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Levels of Clinical Safety Haematology Parameter: Basophils [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Levels of Clinical Safety Haematology Parameter: Basophils [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Haematology Parameter: Basophils [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Haematology Parameter: Basophils [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Chemistry Parameter: Alanine Aminotransferase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Chemistry Parameter: Alanine Aminotransferase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Chemistry Parameter: Alanine Aminotransferase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Chemistry Parameter: Alanine Aminotransferase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Chemistry Parameter: Aspartate Aminotransferase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Chemistry Parameter: Aspartate Aminotransferase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Chemistry Parameter: Aspartate Aminotransferase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Chemistry Parameter: Aspartate Aminotransferase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Chemistry Parameter: Alkaline Phosphatase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Chemistry Parameter: Alkaline Phosphatase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Chemistry Parameter: Alkaline Phosphatase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Chemistry Parameter: Alkaline Phosphatase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Chemistry Parameter: Total Bilirubin [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Chemistry Parameter: Total Bilirubin [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Chemistry Parameter: Total Bilirubin [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Chemistry Parameter: Total Bilirubin [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Chemistry Parameter: Creatinine [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Chemistry Parameter: Creatinine [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Chemistry Parameter: Creatinine [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Chemistry Parameter: Creatinine [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Chemistry Parameter: Blood Urea Nitrogen [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Chemistry Parameter: Blood Urea Nitrogen [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Chemistry Parameter: Blood Urea Nitrogen [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Chemistry Parameter: Blood Urea Nitrogen [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Coagulation Parameter: Prothrombin Time [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Coagulation Parameter: Prothrombin Time [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Coagulation Parameter: Prothrombin Time [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Coagulation Parameter: Prothrombin Time [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Coagulation Parameter: Partial Thromboplastin Time [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Coagulation Parameter: Partial Thromboplastin Time [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Coagulation Parameter: Partial Thromboplastin Time [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Coagulation Parameter: Partial Thromboplastin Time [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Serum Coagulation Parameter: International Normalized Ratio [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Serum Coagulation Parameter: International Normalized Ratio [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Serum Coagulation Parameter: International Normalized Ratio [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Serum Coagulation Parameter: International Normalized Ratio [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Specific Gravity [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Specific Gravity [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Specific Gravity [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Specific Gravity [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Potential of Hydrogen (pH) [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: pH [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: pH [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: pH [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Glucose [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Glucose [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Glucose [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Glucose [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Protein [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Protein [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Protein [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Protein [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Blood [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Blood [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Blood [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Blood [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Ketones [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Ketones [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Ketones [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Ketones [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Bilirubin [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Bilirubin [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Bilirubin [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Bilirubin [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Urobilinogen [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Urobilinogen [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Urobilinogen [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Urobilinogen [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Nitrite [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Nitrite [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Nitrite [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Nitrite [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Mean Concentration of Clinical Safety Urinalysis Parameter: Leukocyte Esterase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Median Concentration of Clinical Safety Urinalysis Parameter: Leukocyte Esterase [Day 0 (Screening), Day 3, Day 7, Day 14 and Day 42]
- Mean Change From Screening in Clinical Safety Urinalysis Parameter: Leukocyte Esterase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- Median Change From Screening in Clinical Safety Urinalysis Parameter: Leukocyte Esterase [Day 0 (Screening) to Day 3, Day 7, Day 14 and Day 42]
- TBA7371 Pharmacokinetic Parameter (PK): Maximum Plasma Concentration (Cmax) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: Time to Maximum Plasma Concentration (Tmax) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: Last Measurable Concentration (Clast) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: Time to Last Measurable Concentration (Tlast) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: Area Under the Plasma Concentration-Time Curve (AUC) Extrapolated to Infinity (AUCinf) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: Area Under the Plasma Concentration-Time Curve from 0 up to the Last Measurable Concentration (AUClast) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: AUC to the End of the Dosing Period (AUCtau) [Days 1, 2, 4, 7 and 14]
- TBA7371 PK Parameter: Half-Life [Days 1, 2, 4, 7 and 14]
- PK Parameter: Accumulation Ratios [Days 1, 2, 4, 7 and 14]
- Expected Concentration Associated With 90% of the Maximal TBA-7371 Early Bactericidal Activity (EBA) Effect (EC90) [Day 0 (Screening) to Day 14]
Eligibility Criteria
Criteria
Inclusion Criteria:
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Participants between 18 to 60 years of age inclusive at the time of signing the informed consent.
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Body weight within 40 and 100 kilogram (inclusive).
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Untreated, rifampicin-sensitive pulmonary tuberculosis, as defined by all of the following:
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isoniazid urine screen negativity
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sputum smear positivity on direct microscopy for acid-fast bacilli, defined as at least 1+ on the International Unit Against Tuberculosis and Lung Disease/ World Health Organization scale
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chest X-rays which in the opinion of the investigator is consistent with tuberculosis (TB).
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Mycobacterium tuberculosis (Mtb) positivity on molecular test (GeneXpert®)
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rifampicin sensitivity on molecular test (GeneXpert®).
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Participants must be able to produce at least 10 milliliter of sputum during the overnight sputum collection (day -7 to -3 or day -2 of the Screening Phase).
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Female and male participants should be of non-childbearing potential or using an effective method of birth control.
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Non-childbearing potential is defined as follows:
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participant is not heterosexually active or practices sexual abstinence, OR
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female participant or sexual partner has undergone bilateral oophorectomy, bilateral tubal ligation and/or hysterectomy, OR
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female participant or sexual partner has been postmenopausal with a history of no menses for at least 12 consecutive months, OR
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male participant or sexual partner has undergone vasectomy or bilateral orchidectomy at least three months prior to screening, OR
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male participant with pregnant sexual partner (for duration of the study) who does not have any other sexual partners.
- An effective method of birth control is defined as follows:
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double barrier method, which can include any 2 of the following: a male condom, diaphragm, cervical cap, or female condom (male and female condoms should not be used together), OR
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barrier method (one of the above) combined with hormone-based contraceptives or an intra-uterine device for the female participant or partner, AND
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participant willing to continue practicing one of the above-mentioned birth control methods throughout 14-day Study Treatment Phase and for 4 weeks after the last dose of study medication or discontinuation from study medication in case of early withdrawal.
- Participants must be capable of giving signed informed consent, which includes agreeing to compliance with the requirements and restrictions listed in the informed consent form and the protocol.
Exclusion Criteria:
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Need for immediate effective anti-TB treatment as judged by the investigator.
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Evidence and/or history of extra-thoracic TB (e.g. miliary TB, abdominal TB, urogenital TB, osteoarthritic TB, TB meningitis, ocular TB), as judged by the investigator.
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Evidence and/or history in the last 5 years of one or any combination of the following:
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uveitis;
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color vision deficiency;
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amblyopia;
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visual acuity worse than 20/25 after correction in either eye;
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any known eye disease or prior eye surgery;
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any systemic condition with ocular manifestations (i.e. Marfan, syphilis, diabetes, Beçhet, Vogt-Koyanagi-Harada, Lyme, or chronic inflammatory condition such as sarcoidosis, rheumatoid arthritis, psoriatic arthritis)
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Evidence and/or history in the last 5 years of clinically significant medical condition(s) as judged by the investigator, including malignancies and unstable or uncontrolled hypertension.
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Any current medical, psychiatric, occupational, or substance abuse problems that, in the opinion of the investigator, will make it unlikely that the participant will comply with the protocol.
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For Human Immunodeficiency Virus infected participants:
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CD4+ count <350 cells/microliter, OR
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Acquired Immune Deficiency Syndrome-defining opportunistic infection or malignancies (except pulmonary TB).
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Seated systolic/diastolic blood pressure assessed as vital sign [i.e. not from electrocardiogram (ECG)] is less than 95/40 millimeters of Mercury (mmHg) or greater than 145/95 mmHg at screening. Out-of-range blood pressure may be repeated twice with at least 5 minutes intervening.
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Seated heart rate assessed as vital sign (i.e. not from ECG) is lower than 40 beats per minute (bpm) or higher than 110 bpm at screening. Out-of-range heart rate may be repeated twice with at least 5 minutes intervening.
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A clinically significant ECG abnormality at screening. NOTE: The following can be considered not clinically significant:
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mild first-degree atrio-ventricular block (P-R interval <0.23 seconds);
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right or left axis deviation;
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incomplete right bundle branch block;
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isolated left anterior fascicular block (left anterior hemiblock) in young athletic participants.
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A list of commonly used prohibited medications with the features described below are prohibited:
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Use of medications active against Mtb within 3 months prior to the first dose of study drug.
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Use of systemic immunosuppressive medications within 14 days prior to the first dose of study drug.
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Use of strong inhibitors or strong inducers of cytochrome P450 (CYP) enzymes within 14 days prior to the first dose of study drug.
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Use of inhibitors of phosphodiesterase (PDE) enzymes within 14 days prior to the first dose of study drug.
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Use of medications known to affect the eye within 3 months prior to the first dose of study drug.
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For Human Immunodeficiency Virus positive participants, use of medications listed in the protocol within 3 months prior to the first dose of study drug.
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Participation in other clinical study(-ies) with investigational agent(s) within 6 months prior to trial start.
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The following laboratory values from blood collected during the Screening Phase, which represent Grade 2 or higher abnormalities per Division of Acquired Immune Deficiency
Syndrome (DAIDS) Toxicity Table Version 2.1, will be cause for exclusion:
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Aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase ≥ 2.5x upper limit of normal (ULN) for local laboratory values
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Total bilirubin ≥ 1.6x ULN
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Creatinine ≥ 1.3x ULN
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Hemoglobin < 10 grams per deciliter (g/dL) [male] or 9.5 g/dL [female]
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White Blood Cells < 2,000 /cubic millimeter (mm3)
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Platelets ≤ 100,000 /mm3
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International normalized ratio of prothrombin time (INR) ≥ 1.5x ULN
-
Partial thromboplastin time (PTT) ≥ 1.66 ULN
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Prothrombin time (PT) ≥ 1.25x ULN
Grade 2 or higher abnormalities in other laboratory parameters from blood or urine Grade 1 abnormalities, or abnormalities from laboratory parameters not included in the DAIDS Toxicity Table Version 2.1, may lead to exclusion if the investigator considers them clinically significant.
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History of allergy or hypersensitivity to any of the study drugs or related substances.
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Positive urine drug screening for cocaine AND/OR amphetamines AND/OR opiates AND/OR methamphetamines. Note: screening will also be conducted for cannabinoids and results documented in the case report form; however, a positive test for cannabinoids is not an exclusion criterion.
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Female participants currently pregnant or lactating/nursing; OR having positive serum pregnancy test during the Screening Phase OR planning a pregnancy within the 1 month after first dose of study drug.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Investigational Site | Bellville | Cape Town | South Africa | 7530 |
2 | Investigational Site | Mowbray | Cape Town | South Africa | 7700 |
3 | Investigational Site | Pretoria | Gauteng | South Africa | 0087 |
4 | Investigational Site | Jouberton | North West Province | South Africa | 2574 |
Sponsors and Collaborators
- Bill & Melinda Gates Medical Research Institute
Investigators
- Study Director: Gates MRI, Bill & Melinda Gates Medical Research Institute
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- Gates MRI-TBD03-201