Efficacy Study of Trichuris Suis Ova to Treat Chronic Plaque Psoriasis

Study Overview
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Brief Summary
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The purpose of this research study is to better understand whether trichuris suis ova (TSO) ingested orally may be safe and effective in the treatment of psoriasis.

Detailed Description
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This is an open-label study to assess the safety and efficacy of 16 weeks of treatment with 7500 trichuris suis ova (TSO 7500) given every 2 weeks (a total of 8 doses) for the treatment of moderate-to-severe, chronic, plaque-type psoriasis.

Official Title
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An Open-label Pilot Study to Assess the Safety and Efficacy of Trichuris Suis Ova for the Treatment of Moderate to Severe Chronic Plaque Psoriasis

Conditions
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Psoriasis

Intervention / Treatment
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* Drug: Trichuris Suis Ova


Participation Criteria
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Eligibility Criteria
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Inclusion criteria: Males or females, 18-75 years old Diagnosis of stable plaque type psoriasis for at least 6 months prior to baseline Baseline moderate to severe psoriasis, defined as: Psoriasis covering a body surface area (BSA) ≥10%; Physician's global assessment (PGA) ≥3, and; PASI ≥12 Must be in good health as judged by the PI, based on medical history, physical examination, and clinical laboratories In the opinion of the PI, must be a candidate for systemic therapy or phototherapy of psoriasis If a woman, before entry she must be one of the following: Postmenopausal, defined as 45 years of age with amenorrhea for at least 18 months, or >45 years of age with amenorrhea for >6 months and a serum follicle stimulating hormone (FSH) level >40 IU/mL, or surgically postmenopausal (bilateral oophorectomy) surgically sterile (have had a hysterectomy or tubal ligation or otherwise be incapable of pregnancy) If heterosexually active, practicing a highly effective method of birth control, including hormonal prescription oral contraceptives, contraceptive injections, contraceptive patch, intrauterine device, double-barrier method (eg, condoms, diaphragm, or cervical cap, with spermicidal foam, cream, or gel), or male partner sterilization for the duration of their participation in the study and for 2 months after receiving the last administration of any study agent; or Not heterosexually active Women of childbearing potential must have a negative pregnancy test (urine and serum) prior to randomization Agree to avoid prolonged exposure to natural sunlight or tanning beds or phototherapy devices for the duration of the study Agree to avoid any prohibited concomitant medications as detailed below for the duration of the study and for 4 weeks prior to baseline Negative stool culture Subject has the ability to provide informed consent Subjects who are on inhaled or ophthalmic steroids are allowed Exclusion Criteria: Subjects with known history of intestinal parasitic infection, even if adequately treated, in the past 5 years Subject received antibiotic, antifungal or antiparasitic medication in the last 2 weeks prior to Screening and/or would potentially require this during the study treatment period Subject with history of drug or alcohol abuse within 6 months prior to screening Subject with evidence of poor compliance with medical advice and instruction including diet or medication Subject is unable or unwilling to swallow study medication suspension Subject with a significant medical condition which puts the subject at risk for study participation and/or for any reason is considered by the Investigator to be an unsuitable candidate to receive TSO or is potentially put at risk by study procedures Subjects who has participated in another clinical trial within 30 days of screening for this trial and/or any experimental treatment for this population White blood cell count ≤3,000/mm3 (≤3.0 x 109/L) or ≥14,000/mm3 (≥14 x 109/L) Platelet count ≤ 100,000/μL (≤100 x 109/L) Serum creatinine >2 x upper limit of normal (ULN) Aspartate or alanine aminotransferase >2 x ULN Total bilirubin >2 mg/dL (34 μmol/L) Hemoglobin < 9 g/dL Subjects who are currently taking or have taken in the past 30 days, for any reason, any medication that, in the opinion of the investigator, suppressed the immune response. This may include but is not limited to systemic steroids, azathioprine, cyclosporine, tacrolimus, mycophenolate mofetil, mycophenolic acid, etanercept, adalimumab, infliximab, ustekinumab, cimzia, or any other biologic agent targeted to any cell or cytokine in the immune system. Subjects who are refractory to 2 or more biological agent plaque psoriasis therapies due to lack of efficacy Subjects currently taking or who have taken in the past 2 weeks, topical steroids Subjects on a non-stable dose of vitamin D analog in the past 30 days Subjects currently taking or who have taken in the past 30 days any medications likely to improve psoriasis and thus interfere with evaluation. This may include, in addition to the medications listed above, phototherapy, methotrexate, hydroxyurea, or acitretin Subjects with a diagnosis of inflammatory bowel disease (ulcerative colitis or Crohn's disease) or of irritable bowel syndrome Subjects with HIV-1/HIV-2 antibody, hepatitis B surface antigen, hepatitis C antibody Subject received non-steroidal anti-inflammatory drugs within 2 weeks before Baseline visit for more than 3 consecutive days, except acetylsalicylic acid ≤350 mg/d which is allowed Women who are intending to become pregnant or who are breastfeeding or planning to breastfeed

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: TSO 7500<br>Subjects in this arm will receive doses of 7500 trichuris suis ova every two weeks, starting at the baseline visit, for a total of 8 doses. | Drug: Trichuris Suis Ova<br>* During the treatment phase, study drug will be provided in a liquid form and will be administered every 2 weeks, starting with the Baseline visit, through Week 14.<br>* Other names: TSO 7500;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Physician's area and severity index (PASI) | The PASI is a system used for assessing and grading the severity of psoriatic lesions and their response to therapy. PASI produces a numeric score that can range from 0 to 72 based on the body surface area of involvement and the severity of disease (induration, erythema and scale). A PASI-50 response is defined as ≥50% improvement in PASI score from baseline; PASI-75 and PASI-90 are similarly defined. | Screening, baseline, weeks 2, 4, 6, 8, 10, 12, 14, and 16 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety and tolerability | Evaluated via the frequency and severity of adverse events, changes in physical examinations, stool studies (ova and parasites, culture, clostridium difficile toxin, and blood), clinical laboratories (liver function tests, creatine phosphokinase, complete metabolic profile, complete blood count), and vital signs (blood pressure, pulse and temperature). | Screening, baseline, weeks 2, 4, 6, 8, 10, 12, 14, 16, 20, and 38 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Psoriasis, Trichuris suis ova, T-lymphocytes