RHB-204 is a proprietary, fixed-dose oral capsule containing a combination of clarithromycin, rifabutin, and clofazimine, developed for the treatment of pulmonary NTM disease caused by Mycobacterium avium Complex (MAC).

The RHB-204 U.S. Phase 3 study was terminated due to a low accrual rate and reallocation of internal resources. The study sought to evaluate RHB-204's efficacy as a first-line treatment for pulmonary MAC disease in adults with nodular bronchiectasis (also referred to as pulmonary NTM disease).

In addition to FDA Fast Track designation, RHB-204 has been granted FDA Orphan Drug designation for the treatment of NTM disease and QIDP Designation under the Generating Antibiotic Incentives Now Act (GAIN Act), extending U.S. market exclusivity for RHB-204 to a potential total of 12 years to be granted at the time of FDA approval. RHB-204 has additionally been granted EU Orphan Designation, providing eligibility for 10 years EU post-approval market exclusivity.

The Phase 3 study with RHB-204 is registered on www.clinicaltrials.gov, a web-based service by the U.S. National Institute of Health, which provides public access to information on publicly and privately supported clinical studies.

RHB 204