The MEDIPSA Clinical Trial

The Effect of Probiotic Modulation of Enteral Dysbiosis on dIsease Activity in Patients With PSoriatic Arthritis

The main purpose of this study is to validate the positive effect of "Omnibiotic Stress Repair" on patients with active psoriatic Arthritis.

This is a single center, double blind (patients and investigators), Placebo controlled randomized trial.

Consecutive patients with Psoriatic Arthritis (PsA) in moderate disease activity (Psoriatic Arthritis Disease Activity Score: PASDAS >3.2 - <5.4) on a stable treatment (no immunomodulatory treatment change in the last 3 months) with biological (bDMARDs) and/or synthetic disease modifying anti-rheumatic drugs (sDMARDs) and/or glucocorticoids will be included in the study. Clinical assessment will be scheduled at baseline, 12 weeks and 24 weeks.

Inclusion Criteria:

1. Male or female patient ≥18 years and <90 years of age
2. PsA according to CASPAR criteria
3. MoDA defined by a PASDAS >3.2 - <5.4
4. Stable immunomodulatory therapy for the last 12 weeks before baseline (no change in bDMARD/sDMARD/glucocorticoid treatment)
5. Written informed consent

Exclusion Criteria:

1. History of bariatric surgery
2. Prior use of probiotics in the last 24 weeks
3. Use of probiotics, other than the study product, during the study period.
4. Antibiotic therapy within the last 4 weeks before inclusion
5. Inflammatory bowel disease
6. Recent (less than 12 weeks) acute myocardial infarction or decompensated heart failure
7. Recent (less than 12 weeks) stroke
8. Known malignancy
9. Inability of the patient to follow the treatment protocol
10. Pregnancy