Maralixibat: First Approval

Matt Shirley1

  • 1Springer Nature, Mairangi Bay, Private Bag 65901, Auckland, 0754, New Zealand. dru@adis.com.

Drugs
|November 23, 2021
PubMed

Insights

Maralixibat, an ileal bile acid transporter inhibitor, is now approved in the USA for treating cholestatic pruritus in Alagille syndrome patients aged one and older. This marks a significant milestone for rare cholestatic liver disease treatment.

Area of Science:

  • Pharmacology
  • Hepatology
  • Drug Development

Background:

  • Rare cholestatic liver diseases, including Alagille syndrome (ALGS), progressive familial intrahepatic cholestasis (PFIC), and biliary atresia, present significant unmet medical needs.
  • Ileal bile acid transporter (IBAT) inhibition is a therapeutic strategy for managing bile acid homeostasis in cholestatic conditions.

Purpose of the Study:

  • To summarize the key development milestones of maralixibat, an oral IBAT inhibitor.
  • To highlight the regulatory pathway leading to the first approval of maralixibat for Alagille syndrome.

Main Methods:

  • Review of preclinical and clinical development data for maralixibat.
  • Analysis of regulatory submissions and approvals for maralixibat in rare cholestatic liver diseases.

Main Results:

  • Maralixibat, a small-molecule IBAT inhibitor, has undergone extensive development for treating rare cholestatic liver diseases.
  • The drug received its first US approval on September 29, 2021, for cholestatic pruritus in ALGS patients aged one year and older.

Conclusions:

  • The US approval of maralixibat represents a significant advancement in the treatment of Alagille syndrome.
  • Continued development is underway for other pediatric cholestatic liver conditions, including PFIC and biliary atresia, and for younger ALGS patients.

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