| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Pediatric patients with multidrug-resistant tuberculosis (MDRTB) who are receiving an optimized background regimen (OBR) of Antituberculosis Drugs |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Pediatric patients who received other treatments that did not work and who are receiving treatment of Antituberculosis Drugs |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Bacterial Infections and Mycoses [C01] | 
| MedDRA Classification | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| To determine the pharmacokinetics (PK) of delamanid and its metabolites in combination with an OBR in pediatric MDR-TB patients |  | 
| E.2.2 | Secondary objectives of the trial | 
| -     To determine the safety and tolerability of delamanid in combination with an OBR in pediatric MDR-TB patients - To determine the palatability of the delamanid pediatric
 formulation
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| Key Inclusion Criteria: - Male or female
 - Age birth to 17 years, inclusive
 - Confirmed diagnosis of MDR-TB, ie, culture positive
 for Mycobacterium tuberculosis (MTB) with isoniazid
 and rifampicin resistance on drug-susceptibility testing,
 or a positive rapid test demonstrating resistance to
 rifampicin alone or to rifampicin and isoniazid
 OR
 - Presumptive diagnosis of pulmonary or extrapulmonary
 MDR-TB such that the treating physician has decided to
 treat for MDR-TB the patient who has one of the following:
 - Clinical specimen (eg, cerebral spinal fluid, pleural
 fluid, ascitic fluid, lymph node aspirate, or other
 tissue specimen) suggestive of tuberculosis (TB)
 disease
 - Persistent cough lasting > 2 weeks
 - Fever, weight loss, and failure to thrive
 - Findings on recent chest radiograph or other
 imaging studies (prior to Visit 1) consistent with TB
 AND
 - Household contact of a person with known
 MDR-TB or a person who died while appropriately
 taking drugs for drug-sensitive TB
 OR
 - On first-line TB treatment but with no clinical
 improvement
  Negative urine pregnancy test for female patients who
 have reached menarche
  Study-specific written informed consent/assent obtained
 from a parent(s) or guardian or legally acceptable
 representative, as applicable for local laws prior to the
 initiation of any protocol-required procedures. In
 addition, for patients in Groups 1 and 2 the patient must
 provide informed assent at screening and must be able
 to fully understand that he or she can withdraw from the
 study at any time.
 |  | 
| E.4 | Principal exclusion criteria | 
| Key Exclusion Criteria:  Children with laboratory evidence of active hepatitis B
 or C
  Children with body weight < 5.5 kg
  For patients with HIV co-infection, CD4 cell count ≤
 1000/mm3 for children 1-5 years old, and ≤
 1500/mm3 for children less than 1 year old
 History of allergy to metronidazole and any disease or
 condition in which metronidazole is required
  Use of amiodarone within 12 months prior to the first
 dose of investigational medicinal product (IMP) or use
 of other predefined antiarrhythmic medications within
 30 days prior to the first dose of IMP
  Serious concomitant conditions (cardiovascular
 disorders, severe respiratory disease, severe diarrheal
 disease, renal, hepatic, or neurological impairment)
  Preexisting cardiac conditions including but not limited
 to structural cardiac disease including suspected TB
 involvement of the heart on clinical or radiographic
 grounds
  Abnormalities in screening electrocardiogram (ECG)
 (including atrioventricular block, bundle branch block
 or hemi-block, QRS prolongation > 120 msec, or QT
 interval corrected using Fridericia’s method (QTcF)
 > 450 msec in both males and females)
  A concomitant condition such as renal impairment
 characterized by serum creatinine levels > 1.5 mg/dL,
 hepatic impairment (alanine aminotransferase or
 aspartate aminotransferase > 3 times the upper limit of
 normal [ULN]), or hyperbilirubinemia characterized by
 total bilirubin > 2x ULN
  Concurrent diagnosis of severe malnutrition or
 kwashiorkor
  Positive urine drug screen (Groups 1 and 2 only)
  Use of rifampicin and/or moxifloxacin within 1 week
 prior to the first dose of IMP and/or any prior or
 concurrent use bedaquiline
  Lansky Play Performance Score < 50 (not applicable for
 children < 1 year old) or Karnofsky Score < 50
  Administered an IMP within 1 month prior to Visit 1
  Pregnant, breast-feeding, or planning to conceive or father a child within the timeframe described in the informed consent form (Groups 1 and 2 only)
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Pharmacokinetic parameters of delamanid and its main metabolites 
 
 |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| Plasma samples will be performed in Day 1 (first dose), Day 10 (last dose) and Day 17 
 For children with tuberculosis meningitis, CSF concentrations of delamanid will be determined after lumbar puntcure
 |  | 
| E.5.2 | Secondary end point(s) | 
| Safety assessments including: - Vision and neurologic assessments
 - Standard 12-lead ECG, intensive ECG monitoring.
 - Laboratory testing, including coagulation testing
 - Monitoring of electrolytes especially from birth to 2 years of age
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| - Safety assessments on Days 1, 10 (Groups 1 and 2 only), and 18
 
 Follow-up Period: Day 19 to Day 40 (2 days)
 - All patients who complete their last scheduled visit will be contacted by telephone 28 to 30 days after the last dose of delamanid to assess any new or ongoing adverse events.
 
 - Patients who terminate from the trial prior to their last scheduled visit will be contacted by telephone or home visit 14 days (2 days) after the last dose of delamanid to assess for any new or ongoing adverse events.
 |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | No | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | No | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | Yes | 
| E.6.13.1 | Other scope of the trial description |  | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | Yes | 
| E.7.1.1 | First administration to humans | Yes | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | No | 
| E.7.3 | Therapeutic confirmatory (Phase III) | No | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | No | 
| E.8.1.1 | Randomised | No | 
| E.8.1.2 | Open | Yes | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | No | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | No | 
| E.8.2.3 | Other | No | 
| E.8.2.4 | Number of treatment arms in the trial | 4 | 
| E.8.3 | Will this trial be conducted at a single site globally? | No | 
| E.8.4 | Will this trial be conducted at multiple sites globally? | Yes | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | Yes | 
| E.8.6.3 | Specify the countries outside of the EEA in which trial sites are planned |  | 
| E.8.7 | Trial has a data monitoring committee | Yes | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.2 | In all countries concerned by the trial days | 17 |