One pill to cure sleeping sickness? new trial raises hopes

NCT ID NCT03087955

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

Phase 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

208 people

The number who actually took part.

Started

Oct 2016

Finished

Sep 2020

Lead sponsor

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

15 years and older

Sex

Anyone

Healthy volunteers

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

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

  • Centre de Traitement de Kimpese

    Kimpese, Bas-Congo Province, Democratic Republic of the Congo

  • Centre de Traitement de Nkara

    Nkara, Bandundu, Democratic Republic of the Congo

  • Centre de Traitement de la THA de Dubreka

    Dubréka, Dubreka, Guinea

  • Hopital Général de Réference de Bandundu

    Bandundu Province, Democratic Republic of the Congo

  • Hôpital Général de Référence Roi Baudouin

    Kinshasa, Democratic Republic of the Congo

  • Hôpital Général de Référence de Bagata

    Bagata, Kwilu, Democratic Republic of the Congo

  • Hôpital Général de Référence de Kwamouth

    Kwamouth, Mai Ndombe, Democratic Republic of the Congo

  • Hôpital Général de Référence de Masi-Manimba

    Masi-Manimba, Kwilu, Democratic Republic of the Congo

  • Hôpital Général de Référence de Ngandajika

    Gandajika, East Kasai, Democratic Republic of the Congo

  • Hôpital Secondaire de Katanda

    Katanda, East Kasai, Democratic Republic of the Congo

  • Hôpital de Dipumba

    Mbuji-Mayi, East Kasai, Democratic Republic of the Congo

  • Hôpital de Référence d'Isangi

    Isangi, Democratic Republic of the Congo

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