Helminth-induced Immunomodulation Therapy (HINT) in Relapsing-remitting Multiple Sclerosis (HINT)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00645749
Recruitment Status : Active, not recruiting
First Posted : March 28, 2008
Last Update Posted : January 24, 2018
National Multiple Sclerosis Society
Information provided by (Responsible Party):
University of Wisconsin, Madison

March 25, 2008
March 28, 2008
January 24, 2018
July 2008
April 2016   (Final data collection date for primary outcome measure)
MS activity, as judged by the number of new gadolinium-enhancing lesions on serial MRI scans. [ Time Frame: monthly ]
Same as current
Complete list of historical versions of study NCT00645749 on Archive Site
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Helminth-induced Immunomodulation Therapy (HINT) in Relapsing-remitting Multiple Sclerosis
Helminth-induced Immunomodulation Therapy (HINT) in Relapsing-remitting Multiple Sclerosis
The hypothesis of this study is that helminth-induced immunomodulation therapy (HINT) will be safe and effective when administered orally in patients with relapsing-remitting multiple sclerosis (RRMS).
Phase 1 of the HINT trial was completed with enrollment of 5 subjects. HINT Phase 2 is now closed to enrollment of 15 subjects. Recruitment sites are the UW-Madison and the Marshfield Clinic.
Phase 1
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Relapsing Remitting Multiple Sclerosis
Biological: Helminth ova
2500 ova per dose (liquid form)
Other Name: Therapy with Helminths
Experimental: Helminth ova
Subjects serving as their own controls (baseline - end-of-treatment) will receive a dose of 2,500 ova, in liquid form, every 2 weeks
Intervention: Biological: Helminth ova
Fleming JO, Isaak A, Lee JE, Luzzio CC, Carrithers MD, Cook TD, Field AS, Boland J, Fabry Z. Probiotic helminth administration in relapsing-remitting multiple sclerosis: a phase 1 study. Mult Scler. 2011 Jun;17(6):743-54. doi: 10.1177/1352458511398054. Epub 2011 Mar 3.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Active, not recruiting
September 2018
April 2016   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • McDonald Committee (2010) criteria for RRMS (MS) .
  • ambulatory patients with disability scores of EDSS 0.-5.0
  • male or female subjects; ages 18-50
  • diagnosis within three years of study entry, based on either a) two or more clinical attacks in the three years prior to entry or b) one attack within three years of entry, coupled with MRI evidence of dissemination in space and time by strict application of McDonald Committee MRI criteria
  • active MRI at entry, as evidenced by at least one gd+ enhancing lesion during screening
  • explicit refusal to be treated with conventional disease-modifying medications (DMT) for RRMS, after full discussion of the potential benefits and risks of these agents and after review of the National Multiple Sclerosis Advisory Statement DMT.
  • ability to provide written informed consent

Exclusion Criteria:

  • patients who are unwilling or unable to give written informed consent or to follow the protocol successfully
  • allergy to Trichuris species
  • treatment with metronidazole (Flagyl) or other medications with anti-helminth effects (IB 5.7)
  • previous or anticipated treatment with FDA-approved or other experimental medications for RRMS
  • previous treatment with immunosuppressive therapy, cytotoxic chemotherapy, or lymphoid irradiation for any reason
  • insulin dependent diabetes mellitus
  • history of HIV-1, HTLV-1, viral hepatitis, or Lyme disease.
  • requirement for chronic, sustained aspirin or non-steroidal anti-inflammatory medications (e.g., use of more than 5-6 days per month for transient symptoms)
  • significant physical or mental disease which would preclude successful compliance and participation in the study or, in the opinion of the principal investigator, constitute a hazard, such that enrollment in the study would not be in the patient's best interest.
  • presence or history of cancer of any type (except successfully treated basal cell or squamous cell carcinoma of skin)
  • history of alcohol or drug abuse in last 12 months; chronic liver or biliary disease; AST or ALT determination greater than two times the upper limit of normal
  • any of the following laboratory abnormalities: serum creatinine > 1.7 mg/DL, white blood count < 3,500/mm3, lymphocyte count < 800/mm3
  • special subjects such as minor children, mentally disabled persons, or prisoners
  • any contraindication to MRI scanning, including significant claustrophobia or sensitivity to gadolinium contrast agent
  • pregnancy and lactation; women of childbearing potential must have a documented negative serum beta HCG pregnancy test at entry and during the study and must be willing to practice adequate birth control for the duration of the study
  • any MS attack or treatment with corticosteroid medication within 30 days of study entry (corticosteroids may be used during the study for MS relapses per the judgment of the treating physician, IB 5.7, IB 6.1.3)
  • immediate household or family contacts who are immunodeficient or immunosuppressed
  • history of parasitism or positive determination ova and parasite stool at screening
Sexes Eligible for Study: All
18 Years to 50 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
United States
2012-0484, 2007-0390
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Not Provided
University of Wisconsin, Madison
University of Wisconsin, Madison
National Multiple Sclerosis Society
Principal Investigator: John O Fleming, MD University of Wisconsin, Madison
University of Wisconsin, Madison
January 2018

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP