Multiple Versus Single Dose of Ivermectin for the Treatment of Strongyloidiasis (STRONGTREAT)
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ClinicalTrials.gov Identifier: NCT01570504 |
Recruitment Status :
Completed
First Posted : April 4, 2012
Last Update Posted : June 14, 2018
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Ivermectin is currently the best drug to cure strongyloidiasis, but the "standard" single dose of 200 mcg/kg is probably not enough to guarantee cure. As strongyloidiasis can be fatal in immunosuppressed patients, it is mandatory to define the optimal dosage to eradicate the parasite.
Aim of this study is to define the most effective dose schedule of ivermectin to cure strongyloidiasis.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Strongyloidiasis | Drug: Ivermectin | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 312 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Randomized, Open-label, Multi Centre Phase III Clinical Trial on Multiple Versus Single Dose of Ivermectin for the Treatment of Strongyloidiasis |
Actual Study Start Date : | March 2013 |
Actual Primary Completion Date : | June 8, 2018 |
Actual Study Completion Date : | June 8, 2018 |

Arm | Intervention/treatment |
---|---|
Experimental: ivermectin multiple doses
A dose of 200 mcg/kg of ivermectin given on days 1,2, 15 and 16
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Drug: Ivermectin
oral formulation
Other Name: Stromectol |
Active Comparator: 1 dose ivermectin
A single 200 mcg/kg dose of ivermectin
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Drug: Ivermectin
oral formulation
Other Name: Stromectol |
- clearance of strongyloides infection [ Time Frame: 12 months ]Clearance of infection is defined by: negative stool agar/charcoal culture/RT-PCR - direct examination of three faecal samples for S. stercoralis AND negative serology or decrease in titer below a defined cutoff
- All-cause mortality during the 12 months of follow-up. [ Time Frame: 12 months ]
- Patients with partial response to treatment at T 2 [ Time Frame: 12 months ]
- Patients with adverse reactions [ Time Frame: From Day 1st to Day 5th of treatment and from Day 15th to Day 19th (or 72 hours from treatment completion) ]grade 1 to 5 as defined in detailed protocol
- Patients with increase in blood ALT over cutoff value [ Time Frame: Day 17 ]
- Patients with decrease in WBC count below cutoff value [ Time Frame: Day 17 ]
- Average difference in blood ALT and WBC count at day 17, compared with baseline [ Time Frame: Day 17 ]
- Average difference in blood eosinophil count at T2, compared with baseline [ Time Frame: 12 months ]

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Ages Eligible for Study: | 6 Years and older (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male and female patients older than 5 years and weighting > 15 kg
- Current residence in non-endemic areas
- Either direct diagnosis of S. stercoralis infection AND positive serology at any titer OR positive serology at "high" titer, irrespective of results of direct tests
Exclusion Criteria:
- Pregnant or lactating women
- Subjects suffering from CNS diseases
- Disseminated strongyloidiasis
- Immunocompromised patients.
- Lack of informed consent
- Previous treatment with ivermectin (in the last year)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01570504
Italy | |
Centro per le Malattie Tropicali, Ospedale Sacro Cuore | |
Negrar, Verona, Italy, 37024 | |
Clinica di Malattie Infettive e Tropicali | |
Brescia, Italy | |
UFDID, Azienda Ospedaliero-universitaria Careggi | |
Florence, Italy | |
Unità di Malattie Infettive, Anna Meyer Children's Universisty Hospital | |
Florence, Italy | |
Spain | |
Unidad de Medicina, Hospital de Poniente-El Ejido | |
El Ejido, Almeria, Spain | |
FCRB, Hospital Clinic de Barcelona | |
Barcelona, Spain | |
Unitat Medicina Tropical i Salut Internacional Drassanes | |
Barcelona, Spain | |
United Kingdom | |
Addenbrookes Hospital, Cambridge University Hospital | |
Cambridge, United Kingdom | |
UCLH | |
London, United Kingdom |
Principal Investigator: | Zeno Bisoffi, MD, PhD | Centre for Tropical Diseases, Negrar (Verona), Italy |
Responsible Party: | Centro per le Malattie Tropicali |
ClinicalTrials.gov Identifier: | NCT01570504 |
Other Study ID Numbers: |
CTD1-2012 2011-002784-24 ( EudraCT Number ) |
First Posted: | April 4, 2012 Key Record Dates |
Last Update Posted: | June 14, 2018 |
Last Verified: | June 2018 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Strongyloidiasis Strongyloides stercoralis Ivermectin |
Strongyloidiasis Rhabditida Infections Secernentea Infections Nematode Infections Helminthiasis |
Parasitic Diseases Infections Ivermectin Antiparasitic Agents Anti-Infective Agents |