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RecruitingNCT06481163Updated Jun 30, 2026

Telacebec (T) Treatment in Adults With Buruli Ulcer (BU). (TREAT BU)

A Phase 2 interventional study of Telacebec in Buruli Ulcer, sponsored by Barwon Health. Recruiting at 2 sites in Australia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-30.

Sponsored by Barwon Health · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Jul 2024; still recruiting 2 years 4 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
200
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this interventional clinical trial is to demonstrate the complete BU lesion healing rate by 52 weeks after treatment initiation, without relapse and/or curative intent excision surgery, after 10-28 days of telacebec (T) treatment. Males and females age 18 and older will be included.

  • Participants will attend visits every 2 weeks during treatment and thereafter every 2 weeks until week 24 Thereafter they will be followed by visits at weeks 30, 40, and 52. From week 10 to week 52, if the lesion has healed, follow-up visits may be remote.
Read the detailed description

This is an open label single arm (telacebec), phase 2 multi-centre, clinical trial. Eligible participants with clinically diagnosed BU, confirmed by polymerase chain reaction (PCR) or culture presence of MU infection will receive telacebec 300 mg orally once daily for 14-28 days with food (protocol V2.0 - 6.0) or telacebec 100 mg orally once daily for 10 days with food (protocol V7.0).

Participants who meet entry criteria and give consent will attend a baseline enrolment visit (Day 1), then visits every week for 2 weeks until week 24, followed by visits at weeks 30, 40, and 52.

BU lesion management will be provided to all trial participants. In case of participant early withdrawal from the trial during or after the treatment period, participants will be treated per the investigational site and/or country BU treatment guidelines.

A Data Review Committee (DRC) will review efficacy and safety data. Enrolment and enrolled participants will continue the study whilst the DRC reviews are ongoing.

02

Conditions studied

  • Buruli Ulcer

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Keywords

  • lesion
  • ulcer
  • Buruli Ulcer
  • telacebec
  • Q203
03

In context

Ulcer

359 studies on the registry are indexed under Ulcer; 62 are open to participants now.

This study's planned enrollment of 200 is above the median of 65 across 291 interventional studies indexed under Ulcer.

Browse Ulcer studies →

Lead sponsor

Barwon Health is the lead sponsor of 7 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Major Inclusion Criteria:

  • Clinical diagnosis of BU WHO categories, single or multiples:

Category I- a single lesion \< 5 cm Category II - a single lesion with cross-sectional diameter ≤ 10 cm Category III - where multiple and all lesions are ≤ 10 cm cross-sectional diameter

  • Positive PCR or culture for confirmation of presence of mycobacterium ulcerans (MU).
  • Aged 18 years and older, except for those included in exclusion below.

Major Exclusion Criteria:

  • Participants with the following known or suspected medical conditions/criteria:

    1. Any non BU related condition where participation in the study, as judged by the Investigator, could compromise the well-being of the participant or prevent, limit or confound protocol specified treatment and assessments.
    2. History or current ascites, jaundice, myasthenia gravis, renal dysfunction [estimated (eGFR) \< 30 mls/min],
    3. Compromised immune status (e.g. uncontrolled -infection)
    4. History of previous BU in the previous 12 months (except current infection)
    5. Participants who fulfill both of the following criteria:

      • Aged ≥ 60 years
      • Weight ≥ 85 kg
  • Planned/expected to require curative intent excision surgery, defined as excision of lesion which may include surrounding macroscopically healthy tissue with the aim of helping to sterilize the wound rather than improve wound healing alone, for their BU during the entire study period. Simple removal of necrotic slough and skin grafting is considered normal wound care and allowed.
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
200 participants (estimated)

Study arms

  • Experimental
    100 or 300 mg Telacebec per day

    Telacebec will be administered orally with food once daily for 10-28 consecutive days.

    Drug: Telacebec

Interventions

  • The test product will be supplied as Telacebec 100mg tablets.

    Also known as: Q203

06

What researchers measure

Primary outcomes

  1. Rate of complete lesion healing by 52 weeks from treatment initiation.

    Ulcerated Lesions: Healing and re-epithelialisation of ulcerated area with stable scar formation. Non-ulcerated Lesions: resolution of induration of skin. Complete healing rate will be summarized as percentage with corresponding Clopper-Pearson 95% confidence interval.

    Time frame: 52 weeks from treatment initiation

Secondary outcomes

  1. Median time to healing

    Kaplan-Meier methods will be applied to estimate median time to healing.

    Time frame: 52 weeks from treatment initiation

  2. Safety and Tolerability

    Incidence of Treatment Emergent Adverse Events (TEAEs)

    Time frame: Time of first dose to 28 days after last dose of telacebec.

07

Study locations

2 of 2 sites recruiting
08

References and documents

Individual participant data

Plan to share: No — Data sharing platform is not available yet.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 30, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06481163
Lead sponsor
Barwon Health
Collaborators
Global Alliance for TB Drug Development
Responsible party
Sponsor
First posted
Jul 1, 2024
Start date
Jul 9, 2024
Primary completion
Dec 2027 (estimated)
Completion
Jan 2028 (estimated)
Last update
Jun 30, 2026

Study contacts

Bree Sarah
Contact
BREE.SARAH@barwonhealth.org.au
+61 (03) 4215 3035
Kate Ellis
Contact
KATHRYN.ELLIS@barwonhealth.org.au
+61 (03) 4215 2878
Daniel O'Brien, MD
principal investigator · Barwon Health

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Telacebec

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