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Gastroenterology Research and Practice
Volume 2015 (2015), Article ID 231243, 7 pages
Clinical Study

Site-Specific Immunomodulator: A Novel Treatment for Crohn’s Disease

1Gastrointestinal Research Institute (GIRI), Vancouver, BC, Canada V6Z 2K5
2Freeport Family Wellness Center, P.O. Box F41325, Freeport, Bahamas
3Institute for Immunotherapy and Integrative Oncology, 1130 Vienna, Austria
4Qu Biologics Inc., Vancouver, BC, Canada V5T 4T5
5Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA

Received 22 March 2015; Accepted 27 April 2015

Academic Editor: Antoni Castells

Copyright © 2015 Brian Bressler et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We investigated the mechanism of action, safety, and efficacy of the Site-Specific Immunomodulator (SSI) QBECO, a novel immunotherapy for Crohn’s disease (CD). Using human monocytic THP-1 cells, we demonstrate that SSI QBECO (derived from the common colon bacteria E. coli) activates macrophages to an M1 phenotype (associated with enhanced capacity to eliminate bacteria and activate innate immune responses). We assessed SSI QBECO in a compassionate use protocol of ten adult patients with active CD. Patients with moderate to severe clinical symptoms receiving conventional CD treatments and/or complementary therapies were included, except patients receiving anti-TNF medications. SSI QBECO was self-administered subcutaneously every second day, for a minimum of 2.5 months and a maximum of 11 months. All 10 patients reported improvement of symptoms while on the SSI QBECO treatment. Seven patients reported full resolution of clinical symptoms during a course of SSI QBECO of at least three months. Three patients have experienced ongoing sustained clinical remission after discontinuing all medications, including SSI treatment. The longest case of clinical remission is still ongoing (>4 years). No serious severe adverse clinical events were reported. Collectively, we conclude that treatment with the immunoactive SSI QBECO was well tolerated and effective for treatment of Crohn’s disease in this case series.