New chagas drug candidate passes first safety test in small trial
NCT ID NCT05523596
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-phase trial tested the safety of an experimental drug called ICM20 in 13 adults with Chagas disease who had not been treated before. Participants took ICM20 along with the standard drug benznidazole. The main goal was to check for side effects and see how many people stayed on the medication for 60 days. Since this was a small safety study, it does not yet show whether ICM20 works better than existing treatments.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- ICM20 (a small molecule drug) and benznidazole (a standard Chagas drug)
- What this could lead to
- If safe, this could support further studies of ICM20 for treating Chagas disease.
- What could go wrong
- This is a very early Phase 1 safety trial with only 13 participants, so it cannot prove effectiveness. Side effects or lack of benefit may emerge in larger trials.
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 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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13 people
The number who actually took part.
- Started
-
Aug 2023
- Finished
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Oct 2025
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 70 years
- Sex
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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 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: * ≥18 to 70 years of age * ≥125 and ≤200 pounds * Diagnosis of chagas documented by positive serology * No prior chagas treatment * Able to swallow capsules and tablets * Laboratory values: Blood: Hemoglobin ≥9; Polymorphonuclear white blood cells \>1000; Platelets \>50,000 Liver Function Tests ≤ 2 Times Upper Limit of Normal Serum Creatinine ≤2.0 Prothrombin time, partial thromboplastin time within normal limits HemoglobinA1C \<7 * Human immunodeficiency virus negative * Stable on current prescription medications * Not pregnant, lactating, or planning to get pregnant * Both men and women who are not surgically sterile, or post-menopausal, must agree to avoid pregnancy * Willing to abstain from alcohol * Able and willing to give informed consent Exclusion Criteria:• Prior chagas treatment * Known hypersensitivity to either study drug or its constituents * Requires the continuing use of amiodarone, monoamine oxidase inhibitors, phenytoin, phenobarbital, disulfiram, anticoagulants or procoagulants, drugs or products containing alcohol or propylene glycol. * Coagulopathy * Glucose-6-phosphate dehydrogenase deficiency * History, signs, or symptoms of heart failure * History of heartburn, gastroesophageal reflux disease, or ulcers * Unstable medical condition * Immunodeficiency * Requires surgery or surgical procedure within 90 days of Screening. * Use of an investigational product within 56 days prior to baseline * Unwilling to discontinue use of disallowed products * Unable to give informed consent
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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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Baylor College of Medicine
Houston, Texas, 77030, United States
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Culmore Clinic
Falls Church, Virginia, 22044, United States
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Parkway Medical
Glen Burnie, Maryland, 21061, United States
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