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Enrolling by Invitation

NCT Number: NCT06736691

Efficacy and Safety of Emodepside in Participants With Soil-transmitted Helminth Infections

This study aims to assess the efficacy and safety of emodepside compared to mebendazole in adults and adolescents infected with T. trichiura, either as single infection or co-infections with hookworm and/or A. lumbricoides.

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Key information

Age range

12 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Public Health Laboratory - Ivo de Carneri (PHL-IdC)

Chake Chake, Tanzania

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or non-pregnant (confirmed by a negative serum pregnancy test) and non-breastfeeding female participants aged 12 years and older.
  • T. trichiura as a single infection or co-infection with hookworm and/or A. lumbricoides, confirmed by presence of T. trichiura eggs assessed by Kato-Katz thick smears from two stool samples (infection intensity defined as number of eggs per gram of stool (EPG): (1) light (1-999 EPG), (2) moderate to heavy (≥1000 EPG).
  • A minimum infection intensity of 24 eggs per gram of stool at baseline and at least two positive slides out of the four slides assessed at baseline.
  • Written informed consent signed by the participant and/or legally authorized representative(s) according to the participant's age as established per local regulations. In addition, participant's assent is required as applicable by local laws and regulations for adolescents of 12-17 years of age.
  • Women of childbearing potential must agree to use an effective, culturally appropriate contraceptive measure from at least 28 days prior to first dosage for hormonal contraceptives only and for non-hormonal contraceptive measures from screening Visit 2 until End of Study Visit.

Exclusion criteria

  • Presence of any systemic illnesses, renal and/or hepatic impairment, any other acute or chronic health conditions or congenital disorders which, in the opinion of the Investigator, would make the participant unsuitable for participation in a clinical study or may interfere with the efficacy, safety, and/or pharmacokinetic (PK) evaluation of the study drug.
  • Any of the following:
  • Platelet <75,000/mm3
  • Alanine Aminotransferase (ALT) or Serum Glutamic Pyruvic Transaminase (SGPT) >3x upper limit of normal (ULN)
  • Total bilirubin >2xULN
  • Estimated Glomerular Filtration Rate (eGFR) <90 ml/min/1.73 m2 (adolescents) or estimated creatinine clearance (CrCl) <90 ml/min (adults)
  • Treatment with the following anthelminthic drugs: albendazole, mebendazole, ivermectin, within 28 days before the first dose of study intervention or planned before End of Study Visit.
  • Use of sensitive CYP3A4 substrates within 14 days before the start of the first study intervention and until at least 14 days after the last administration of study intervention (detailed list of prohibited medication is provided in Section 6.5.1).
  • Treatment with metronidazole within 2 days before the first dose of study intervention or planned before 24 hours after last administration of study intervention.
  • Previous assignment to a study intervention for another study planned to be administered during the period the participant is enrolled in this study (from date of informed consent to last follow-up).
  • Known allergy/hypersensitivity to mebendazole and/or emodepside

Treatment and study plan

emodepside (BAY 44-4400)

Drug

Treatment with single dose of oral 15 mg emodepside

matching placebo of emodepside

Drug

Treatment with single dose of oral emodepside matching placebo

Mebendazole

Drug

Treatment with 100 mg mebendazole orally administered b.i.d. for 3 days

similar placebo to mebendazole

Drug

Treatment with mebendazole similar placebo orally administered b.i.d. for 3 days

Primary outcomes

  1. Cured of T. trichiura infection

    Time frame: Test of Cure Visit at 14 to 21 days after end of treatment

    Determined by negative Kato-Katz thick smears in two stool samples taken at the Test of Cure Visit

Secondary outcomes

  1. Cured of A. lumbricoides infection

    Time frame: Test of Cure Visit at 14 to 21 days after end of treatment

    Determined by negative Kato-Katz thick smears in two stool samples taken at the Test of Cure Visit. This endpoint is only applicable for the subgroup of participants co-infected with A. lumbricoides at baseline.

  2. Occurrence of TEAEs

    Time frame: Adverse events that occur after the first dose of study intervention up to 21 days after the last dose of study intervention

    Defined as any AE that occurred or worsened after the first dose of study intervention up to 21 days after the last dose of study intervention

Other outcomes

  1. Cured of hookworm infection

    Time frame: Test of Cure Visit at 14 to 21 days after end of treatment

    Determined by negative Kato-Katz thick smears in two stool samples taken at the Test of Cure Visit. This endpoint is only applicable for the subgroup of participants co-infected with hookworm at baseline.

  2. Egg reduction of each species of STH (T. trichiura, A. lumbricoides and hookworm infection)

    Time frame: Test of Cure Visit at 14 to 21 days after end of treatment

    Defined as logarithm of the number of eggs/g (+1) from stool samples taken at the Test of Cure Visit minus the logarithm of the number of eggs/g (+1) in stool samples taken at baseline. Egg reduction of A. lumbricoides and hookworm will only be calculated in participants co-infected with A. lumbricoides and hookworm at baseline, respectively.

  3. Listing of individual plasma concentrations of emodepside

    Time frame: Plasma concentrations at 3, 6, 21-48 hours and 14-21 days after the end of treatment

Sponsors and collaborators

Lead sponsor

Swiss Tropical & Public Health Institute

Other

Collaborators

  • Bayer
  • Public Health Laboratory Ivo de Carneri
  • Silicon Valley Community Foundation

Registry information

Official study title

A Phase III Single-center, Randomized, Double-blinded, Parallel-group, Active-controlled Study to Evaluate the Efficacy and Safety of a Single Dose of Emodepside Compared to Multiple Doses of Mebendazole in Adolescent and Adult Participants With Soil-transmitted Helminthiasis

Acronym: TREMO-Pemba

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Dec 17, 2024
Registry last updated
May 14, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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