Efficacy and Safety Study of Moxidectin in Adults With Scabies

NCT ID: NCT05875441

Last Updated: 2025-05-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-23

Study Completion Date

2025-02-11

Brief Summary

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Moxidectin is not approved to treat scabies in humans. The effective dose of moxidectin to treat scabies is not known. This study aims to assess the efficacy of a single administration of 8 mg, 16 mg, or 32 mg moxidectin per oral in achieving Scabies Complete Cure at Day 28. This study also aims to assess the safety of three strengths of single moxidectin doses in adults with scabies.

Detailed Description

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Conditions

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Scabies

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Placebo-controlled, double-blind, randomized, dose ranging study. Four cohorts of 50 subjects per cohort are planned. Subjects will be randomized 1:1:1:1 to receive Moxidectin 8mg, Moxidectin 16mg, Moxidectin 32mg or Placebo as a single oral dose.
Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
Double blinded. Subjects will be randomized to one of the treatment arm by Interactive Response Technology at 1:1:1:1

Study Groups

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Moxidectin 8mg

Moxidectin 8 mg (over encapsulated) will be administered as a single dose on Day 0. Each subject will receive the same number of capsules made up of moxidectin 2 mg over encapsulated tablets and placebo capsules to maintain the blind.

Group Type EXPERIMENTAL

Moxidectin Oral Product

Intervention Type DRUG

The required number of moxidectin 2 mg tablet over encapsulated capsules will be administered as a single dose with placebo capsules to match as required

Moxidectin 16mg

Moxidectin 16 mg (over encapsulated) will be administered as a single dose on Day 0. Each subject will receive the same number of capsules made up of moxidectin 2 mg over encapsulated tablets and placebo capsules to maintain the blind.

Group Type EXPERIMENTAL

Moxidectin Oral Product

Intervention Type DRUG

The required number of moxidectin 2 mg tablet over encapsulated capsules will be administered as a single dose with placebo capsules to match as required

Moxidectin 32mg

Moxidectin 32 mg (over encapsulated) will be administered as a single dose on Day 0.

Group Type EXPERIMENTAL

Moxidectin Oral Product

Intervention Type DRUG

The required number of moxidectin 2 mg tablet over encapsulated capsules will be administered as a single dose.

Placebo

16 Placebo capsules will be administered as a single dose on Day 0.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

16 placebo capsules will be administered as a single dose.

Interventions

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Moxidectin Oral Product

The required number of moxidectin 2 mg tablet over encapsulated capsules will be administered as a single dose with placebo capsules to match as required

Intervention Type DRUG

Moxidectin Oral Product

The required number of moxidectin 2 mg tablet over encapsulated capsules will be administered as a single dose with placebo capsules to match as required

Intervention Type DRUG

Moxidectin Oral Product

The required number of moxidectin 2 mg tablet over encapsulated capsules will be administered as a single dose.

Intervention Type DRUG

Placebo

16 placebo capsules will be administered as a single dose.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Aged 18 years or older.
2. Provided written informed consent.
3. Diagnosis of active scabies infestation confirmed by the presence of clinical signs and symptoms (evidence of burrows or typical inflammatory/noninflammatory lesions and pruritus) and either microscopic confirmation of scabies mite(s), ova or scybala by skin scraping or dermoscopy.
4. All female subjects of childbearing potential must agree to the use of a highly effective method of birth control until 16 weeks after administration of Investigational Product (IP).

Exclusion Criteria

1. Diagnosis of crusted/Norwegian scabies or scabies presentation that, in the opinion of the Investigator, would require treatment with more than one standard of care treatment for scabies (e.g., scabies requiring concurrent topical and oral treatment).
2. History of chronic or recurrent dermatologic disease or skin conditions other than scabies that could interfere with the diagnosis of scabies and evaluation of cure.
3. Received any treatment with one or more scabicides within the 28 days prior to Screening, or between Screening and Baseline, including but not limited to permethrin, ivermectin, benzyl benzoate, sulfur, lindane, crotamiton, malathion, tea tree oil or spinosad.
4. Body mass index \> 35 kg/m2.
5. Creatinine clearance \< 30 mL/min (using Cockcroft-Gault equation).
6. Both total bilirubin \>1.5 x upper limit of normal (ULN) and AST \> ULN.
7. Abnormal and clinically relevant findings in hematology or biochemistry assessments at Screening, or in vital signs, 12-lead ECG, or physical examination at Screening and/or Baseline, that in the opinion of the Investigator would put the subjects at increased risk from participating in the study, confound study evaluations, or may interfere with study conduct.
8. Presence of any other clinically relevant condition, including infection, immunological disorder, malignant disease, and/or other underlying condition or circumstance at Screening or Baseline that in the opinion of the Investigator would put the subjects at increased risk from participating in the study, confound study evaluations, or interfere with the study conduct.
9. Use of topical steroids, systemic or high-dose inhaled corticosteroids (\>500 µg per day of fluticasone propionate or equivalent for adults), or other immunomodulators within 14 days of Baseline.
10. Requiring ongoing treatment with, or received within 5 half-lives before Screening, any of the following medications that are clinical BCRP inhibitors: curcurmin (turmeric) supplements, cyclosporine A, darolutamide, eltrombopag, febuxostat, fostamatinib, rolapitant and teriflunomide.
11. Received an investigational agent within 28 days of Screening (or 5 half-lives of the investigational agent, whichever is longer).
12. Known or suspected hypersensitivity to macrocyclic lactones or excipients used in the formulation of moxidectin or ivermectin.
13. Known or suspected hypersensitivity to any of the components in permethrin 5% cream, to any synthetic pyrethroid or pyrethrin, or to the components of spinosad 0.9% topical suspension.
14. Known, suspected or at risk of Loa loa coinfection.
15. Difficulty swallowing tablets or capsules.
16. Pregnant or breastfeeding or planning to become pregnant from Screening until 16 weeks after treatment with IP.
17. Known or suspected alcohol or illicit substance abuse.
18. Unwilling, unlikely or unable to comply with all protocol specified assessments.
19. Previous enrolment in this study.
20. Previous moxidectin exposure within 6 months (5 half-lives) from Baseline.
21. Has household members who refuse or are unable to receive permethrin 5% cream treatment for scabies.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Medicines Development for Global Health

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Richard L Fernandez, MD

Role: PRINCIPAL_INVESTIGATOR

Advance Care and Clinical Trials

Jorge Lopez, MD

Role: PRINCIPAL_INVESTIGATOR

Hospital y Clinica Bendana

Daisy Blanco, MD

Role: PRINCIPAL_INVESTIGATOR

Instituto Dermatologico Dominicano y Cirugia de Pie

Jorge Castillo Molina, MD

Role: PRINCIPAL_INVESTIGATOR

Affinity Clinical Research Services

Patricia A Zuniga Munoz, MD

Role: PRINCIPAL_INVESTIGATOR

Derclinic

Laura B Vargas Rivas, MD

Role: PRINCIPAL_INVESTIGATOR

Vargas Clinic

Gilberto Perez, MD

Role: PRINCIPAL_INVESTIGATOR

Evolution Clinical Trials

Armando Pineda-Velez, MD

Role: PRINCIPAL_INVESTIGATOR

Medical Research of Westchester, Inc

Bruce Torkan, MD

Role: PRINCIPAL_INVESTIGATOR

LA Universal Research Center, Inc

Locations

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LA Universal Research Center, Inc

Los Angeles, California, United States

Site Status

Evolution Clinical Trials

Miami, Florida, United States

Site Status

Advanced Care and Clinical Trials, LLC

Miami, Florida, United States

Site Status

Medical Research of Westchester, Inc

Miami, Florida, United States

Site Status

Affinity Clinical Research LLC

Tampa, Florida, United States

Site Status

Instituto Dermatologico Dominicano y Cirugia de Piel

Santo Domingo Oeste, Santo Domingo Province, Dominican Republic

Site Status

Vargas Clinic

San Salvador, San Salvador Department, El Salvador

Site Status

Derclinic

San Pedro Sula, Cortez, Honduras

Site Status

Hospital y Clinica Bendana

San Pedro Sula, Cortés Department, Honduras

Site Status

Countries

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United States Dominican Republic El Salvador Honduras

Other Identifiers

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MDGH-MOX-2002

Identifier Type: -

Identifier Source: org_study_id

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