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Exploratory efficacy assessment of Rifampicin and Albendazole to treat onchocerciasis in areas of co-endemicity with loiasis

Exploiting the synergy of registered drugs Rifampicin and Albendazole to shorten the treatment duration of Macrofilaricide for the cure of Onchocerciasis in areas co-endemic with Loiasis: An exploratory Pilot phase II Clinical Trial study

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
PACTR
Registry ID
PACTR202212910949177
Enrollment
240
Registered
2022-12-22
Start date
2023-02-28
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Filariasis

Interventions

Treatment 1a and 1b
Treatment 2a
Treatment 3a and 3b
Treatment 4a
Treatment 5a and 5b
Treatment 6a
Treatment 7a

Sponsors

University of Buea
Lead Sponsor
The Funding for this trial was received by the German Center for Infection Research DZIF
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (i) Age 18-55 years (ii) Body weight 50-90 kg (iii) Presence of at least 1 medium-sized onchocercoma detected by palpation (of onchocerciasis patients) (iv) Mf-positive (v) Good general health without any clinical condition requiring medication (vi) No previous history of tuberculosis.

Exclusion criteria

Exclusion criteria: Participants will not be included in the study if any of the following criteria applies: (i) Participants not able to give consent (ii) Participants who are unable to understand the nature, scope, significance and consequences of this clinical trial (iii) Participants taking any concomitant medication (iv) Known history of hypersensitivity to the investigational drug or to drugs with a similar chemical structure (any member of the rifamycins, doxycycline or any member of the tetracyclines) (v) Laboratory evidence of liver disease (AST, ALT, ?GT, Bilirubin greater than the upper limit of the normal range) and renal disease (serum creatinine greater than 1.5 times upper limit of the normal range).

Design outcomes

Primary

MeasureTime frame
The primary end point will be the proportions of living female worms with normal vs. interrupted embryogenesis assessed by immunohistology and the Wolbachia load assessed by molecular technique (PCR) after 18 months.

Secondary

MeasureTime frame
Proportion of study participants with absence of microfilariae in the skin or blood, assessed 12 and 24 months compared to pre-treatment.

Countries

Cameroon

Contacts

Public ContactJerome Fru Cho

University of Buea

jerome.frucho.1@gmail.com00237679033846

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Aug 9, 2026