One pill to cure sleeping sickness? new trial raises hopes
NCT ID NCT03087955
First seen Jun 26, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This study tested a single oral dose of acoziborole in 208 adults with sleeping sickness, a deadly parasitic disease. Participants took three tablets once and were monitored for 18 months. The goal was to see if this simple treatment could cure both early and late stages of the disease, potentially replacing difficult injections.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- acoziborole (a single-dose oral pill)
- What this could lead to
- If successful, this could provide a simple, one-time oral cure for sleeping sickness, replacing current complex treatments.
- What could go wrong
- This is a combined Phase 2/3 trial, so results are promising but not yet confirmed in larger populations. Relapse or side effects remain possible.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2/3
Runs two stages together: whether the treatment works, then large-scale confirmation.
- Participants
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208 people
The number who actually took part.
- Started
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Oct 2016
- Finished
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Sep 2020
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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15 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Male or female patient * 15 years of age or older * Signed informed consent form (as well as assent from illiterate and under-age patients, and those unable to give consent) * Karnofsky Performance Status above 50 * Able to ingest oral tablets * Having a permanent address or being traceable by other persons * Able to comply with the schedule of follow-up visits and requirements of the study * Agreement to be hospitalised in order to receive treatment * For patients with late-stage HAT: * Confirmation of g-HAT by detection of the parasite in the blood and/or the lymph and/or the CSF, at the investigational centre * If trypanosomes are found in the blood or lymph, but not in the CSF, the CSF WBC, measured at the investigational centre, must be above 20/μL for the patient to be included in the cohort of patients with late-stage HAT * For patients with early- or intermediate-stage HAT: * Confirmation of g-HAT by detection of the parasite in the blood and/or the lymph, at the investigational centre * Absence of parasites in the CSF * The CSF WBC, measured at the investigational centre, must be between 6 and 20/μL for the patient to be included in the cohort of patients with intermediate-stage HAT and equal to or below 5/μL for the patient to be included in the cohort of patients with early-stage HAT. Exclusion Criteria: * Severe malnourishment, defined as body-mass index (BMI) below 16 * Pregnancy or breastfeeding (for women of child-bearing potential, confirmed pregnancy on a urine pregnancy test performed within 24 hours prior to administration of acoziborole) * Clinically significant medical condition that could, in the opinion of the Investigator, jeopardise the patient's safety or interfere with participation in the study, including, but not limited to significant liver or cardiovascular disease, suspected or proven active infection, central nervous system trauma or seizure disorder, coma or consciousness disturbances * Severely deteriorated health status, e.g. due to cardiovascular shock, respiratory distress syndrome or end-stage disease * Previously treated for HAT (except prior treatment with pentamidine) * Prior enrolment in the study * Foreseeable difficulty complying with follow-up, including migrant worker, refugee status, itinerant trader etc. * Current alcohol abuse or drug addiction * Not tested for malaria and/or not having received appropriate treatment for malaria * Not having received appropriate treatment for soil-transmitted helminthiasis * Clinically significant abnormal laboratory values including aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) more than 2 times the upper limit of normal (ULN), total bilirubin more than 1.5 ULN, severe leukopenia at less than 2000/mm\^3, Potassium below 3.5 mmol/L, any other clinically significant abnormal laboratory value
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Centre de Traitement de Kimpese
Kimpese, Bas-Congo Province, Democratic Republic of the Congo
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Centre de Traitement de Nkara
Nkara, Bandundu, Democratic Republic of the Congo
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Centre de Traitement de la THA de Dubreka
Dubréka, Dubreka, Guinea
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Hopital Général de Réference de Bandundu
Bandundu Province, Democratic Republic of the Congo
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Hôpital Général de Référence Roi Baudouin
Kinshasa, Democratic Republic of the Congo
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Hôpital Général de Référence de Bagata
Bagata, Kwilu, Democratic Republic of the Congo
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Hôpital Général de Référence de Kwamouth
Kwamouth, Mai Ndombe, Democratic Republic of the Congo
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Hôpital Général de Référence de Masi-Manimba
Masi-Manimba, Kwilu, Democratic Republic of the Congo
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Hôpital Général de Référence de Ngandajika
Gandajika, East Kasai, Democratic Republic of the Congo
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Hôpital Secondaire de Katanda
Katanda, East Kasai, Democratic Republic of the Congo
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Hôpital de Dipumba
Mbuji-Mayi, East Kasai, Democratic Republic of the Congo
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Hôpital de Référence d'Isangi
Isangi, Democratic Republic of the Congo
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