CANbridge Pharmaceuticals Announces Orphan Drug Designation Granted to CAN 106 for the Treatment of Myasthenia Gravis


Beijing, China; Burlington, Mass., November 15, 2022 — CANbridge Pharmaceuticals, Inc. (1228.HK), a global biopharmaceutical company, with a foundation in China, committed to the research, development and commercialization of transformative therapies to treat rare diseases and oncology, announced that CAN106, a clinical-stage recombinant humanized monoclonal antibody targeting C5, has been granted Orphan Drug Designation by the United States Food and Drug administration (FDA) for the treatment of myasthenia gravis (MG), an autoimmune neuromuscular disease that causes weakness in skeletal muscles. CAN106 is in an ongoing Phase 1b/2 trial in paroxysmal nocturnal hemoglobinuria (PNH) in China.

“Orphan Drug Designation for CAN106 in MG is both a validation of CANbridge innovation and a major milestone as our first US FDA regulatory designation,” said James Xue, Ph.D., CANbridge Founder, Chairman and CEO. “By granting Orphan Drug Designation to CAN106, FDA has determined that CAN106 is distinct from the two approved anti-C5 monoclonal antibodies. Importantly, this means that CAN106 may not be blocked from commercialization for MG in the US by currently approved anti-C5 monoclonal antibodies. Furthermore, CAN106 is eligible to receive the benefits provided under the Orphan Drug Act, including 50% tax credit for qualifying clinical trials, waivers for regulatory submission fees, eligibility to receive federal research grants, and upon marketing authorization for MG, 7 years of market exclusivity. We continue to advance our global development strategy for CAN106 and look forward to developing CAN106 for myasthenia gravis and other complement-mediated diseases.”


About CAN106

CAN106 is a clinical-stage investigational novel, long-acting recombinant humanized monoclonal antibody that binds to and neutralizes C5, a key component of the complement system. By preventing the cleavage of C5 into C5a and C5b, CAN106 is intended to prevent the C5b-dependent formation and activation of the membrane attack complex (MAC) on susceptible cell surfaces, with resulting cell lysis (destruction). CAN106 acts downstream of C3 in the complement pathway, preserving the generation of C3a and C3b, which are important for innate immunity.

CAN106 has demonstrated a favorable PK/PD profile, safety, and tolerability, indicating that CAN106 has the potential to effectively inhibit C5 in patients with certain complement-mediated diseases.


About Myasthenia Gravis

Myasthenia gravis (MG) is a rare, acquired, neuromuscular disease that causes weakness in the muscles under voluntary control, including those involved in breathing, swallowing, eye movement and moving the arms and legs. MG is caused when the immune system produces auto-antibodies that block or destroy neuromuscular junctions that transmit signals from a nerve to a muscle fiber causing it to contract.  MG can result in hospitalization for weak respiratory muscles and the need for ventilation.   MG can occur at any age, although it most commonly affects women under 40 and men over 60. According to the Mysathenia Gravis Foundation of America, it is estimated that 20 in 100,000 Americans have MG, or approximately 36,000 to 60,000 cases, but given that the disease is underdiagnosed, these numbers could be much higher. There is no cure.


About CANbridge Pharmaceuticals Inc.

CANbridge Pharmaceuticals Inc. (HKEX:1228) global biopharmaceutical company, with a foundation in China, committed to the research, development and commercialization of transformative therapies for rare disease and rare oncology. CANbridge has a differentiated drug portfolio, with three approved drugs and a pipeline of 10 assets, targeting prevalent rare disease and rare oncology indications that have unmet needs and significant market potential. These include Hunter syndrome and other lysosomal storage disorders, complement-mediated disorders, hemophilia A, metabolic disorders, rare cholestatic liver diseases and neuromuscular diseases, as well as glioblastoma multiforme. The CANbridge Next-Generation Innovation and Process Development Facility is developing novel, potentially curative, gene therapies for rare genetic diseases, including Pompe disease, Fabry disease, spinal muscular atrophy (SMA) and other neuromuscular conditions, and collaborates with world-leading researchers and biotech companies. Animal data from the SMA gene therapy was presented at the American Society for Gene and Cell Therapy (ASGCT), the European Society for Gene and Cell Therapy (ESGCT) and the World Muscle Congress. CANbridge global partners include: Apogenix, GC Pharma, Mirum, Wuxi Biologics, Privus, the UMass Chan Medical School, the University of Washington School of Medicine and Scriptr Global.

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U.S. Investor Relations:

Chris Brinzey

ICR Westwicke


China Investor Relations:

CANbridge Pharmaceuticals Inc.



Deanne Eagle

Planet Communications