BBT-401 is under development as a treatment for ulcerative colitis.
About the drug candidate
BBT-401 is a once-daily orally administered pellino-1 protein protein inhibitor in Phase II clinical trials and is under development as a treatment for ulcerative colitis. BBT-401 is not absorbed systemically but designed to activate only in the digestive tract, which was confirmed during the pre-clinical studies and the Phase I clinical trial. Such limited distribution is expected to eliminate the side effects of inhibiting systemic inflammation by allowing selective suppression of inflammation in the large intestine (the site of the disease). The drug’s effect on inflammation and colonic mucosa regeneration was confirmed during the efficacy test, which utilized ulcerative colitis induced animal disease model.
The biological function of Pellino-1 proteins was identified by Korean researchers in 2006 and is known to play an important role in regulating the various proteins required for an inflammatory response. The Pellino-1 protein transmits external inflammatory signals to the cell nucleus, which is detected by receptors in immune cells. In abnormal chronic inflammatory conditions, our BBT-401 treatment bonded with Pellino-1 proteins to block the transmission of inflammatory signals, resulting in an anti-inflammatory effect.
Additionally, Pellino-1 proteins play an important role in the transmission of inflammatory responses in microglia in patients with degenerative brain diseases, implying that Pellino-1 is a potential target protein for the treatment of various degenerative brain diseases.
In addition to BBT-401, Bridge Biotherapeutics is working closely with our partners to discover a Pellino-1 inhibitor that can be systemically distributed.
Bridge Biotherapeutics acquired the exclusive global license for BBT-401 from Korea Research Institute of Chemical Technology (KRICT) and Sungkyungkwan University in October, 2015. In December 2018, Bridge Biotherapeutics licensed out the development and commercialization rights for the Asia region (22 countries) to Daewoong Pharmaceutical.
EventDate of PresentationPresentation
Crohn’s & Colitis Congress 2019
Date of Presentation
2019년 02월 07일
Ask about the clinical studies
What is ulcerative colitis?
Ulcerative colitis (UC) is a type of inflammatory bowel disease (IBD) that causes inflammation or ulceration in the mucous membrane or submucosa of the large intestine. UC is distinguished from Crohn’s disease (another IBD which shows sporadic occurrence in the entire small and large intestines), as characterized by lesions that begin in the rectum near the anus and continue inside the large intestine.
Most ulcerative colitis patients experience loose feces with blood and mucus or diarrhea several times a day, and suffer from abdominal pain, dehydration, fever, vomiting and weight loss in severe cases. Symptoms not related to the large intestine include nodular erythema, necrotizing pyoderma, oral ulcers, oculopathy, arthritis and ankylosing spondylitis.
Ulcerative colitis is usually a chronic disease with repeated cycles of symptoms and remissions. The symptoms worsen as the disease recurs, and 3-18% of all patients eventually develop colorectal cancer. Additionally, in cases of acute blunt colitis with severe symptoms, urgent surgery to remove the entire colon may be required within a few days, should there be no response to available treatments.
5-ASA drugs are prescribed as the primary drug, followed by steroids and biologics, dependent on the severity of the symptoms. As such, the treatment market is currently divided into 1) safe and affordable primary drugs with low efficacy, 2) short-term steroid treatments, and 3) expensive biologics with high efficacy. Therefore, the need for a novel, primary treatment with higher efficacy and affordable price has been very high.