Elobixibat is an inhibitor of the ileal bile acid transporter (IBAT), undergoing development in clinical trials for the treatment of chronic

constipation Constipation is a bowel dysfunction that makes bowel movements infrequent or hard to pass. The Human feces, stool is often hard and dry. Other symptoms may include abdominal pain, bloating, and feeling as if one has not completely passed the ...

and

irritable bowel syndrome Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by a group of symptoms that commonly include abdominal pain, abdominal bloating, and changes in the consistency of bowel movements. These symptoms may ...

with constipation (IBS-C).

Mechanism of action

Elobixibat is an inhibitor of IBAT, which is an alternative name for the apical sodium bile acid transporter (ASBT) encoded by the ''SLC10A2'' gene. ASBT/IBAT is a bile acid:sodium symporter responsible for the reuptake of

bile acid Bile acids are steroid acids found predominantly in the bile of mammals and other vertebrates. Diverse bile acids are synthesized in the liver in peroxisomes. Bile acids are conjugated with taurine or glycine residues to give anions called bile ...

s in the

ileum The ileum () is the final section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds. In fish, the divisions of the small intestine are not as clear and the terms posterior intestine or distal intestine may ...

, the initial step in their

enterohepatic circulation Enterohepatic circulation is the circulation of biliary acids, bilirubin, drugs or other substances from the liver to the bile, followed by entry into the small intestine, absorption by the enterocyte and transport back to the liver. Enterohepa ...

. By inhibiting the uptake of bile acids, elobixibat increases the bile acid concentration in the gut, and this accelerates intestinal passage and softens the stool. Following several phase II studies, it is now undergoing phase III trials.

Drug development

The drug was developed by Albireo AB, who licensed it to

Ferring Pharmaceuticals Ferring Pharmaceuticals is a Swiss multinational biopharmaceutical company specialising in areas such as reproductive health, maternal health, gastroenterology and urology. Ferring has been developing treatments for mothers and babies for over 50 ...

for further development and marketing. Albireo has partnered with

Ajinomoto is a Japanese multinational food and biotechnology corporation which produces seasonings, cooking oils, frozen food Freezing food Food preservation, preserves it from the time it is prepared to the time it is eaten. Since early times, farm ...

Pharmaceuticals, giving the Japan-based company the rights to further develop the drug and market it throughout Asia. In India,

Dr. Reddy's Laboratories Dr. Reddy's Laboratories Ltd. is an Indian multinational Pharmaceutical industry, pharmaceutical company based in Hyderabad. The company was founded by Kallam Anji Reddy, who previously worked in the mentor institute Indian Drugs and Pharmace ...

launched Elobixibat with brand name Bixibat in October 2024.

References

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