Zydus granted Orphan Drug Designation by the USFDA for ZYIL1

Zydus Lifesciences Ltd, today announced that the United States Food and Drug Administration (USFDA) has granted ‘Orphan Drug Designation’ (ODD) to ZYIL1, for treatment of patients with Cryopyrin Associated Periodic Syndrome (CAPS), via an exchange filing.

The FDA's Office of Orphan Drug Products grants orphan status to support development of medicines for the treatment of rare diseases that affect fewer than 200,000 people in the United States.

ZYIL1 is a novel oral small molecule NLRP3 inhibitor which has demonstrated CSF penetration in non-human primates.

In September 2022, Zydus had announced positive Phase 2 proof-of-concept (POC) study in CAPS patients, and publication of Phase 1 study results in Clinical Pharmacology in Drug Development, supporting the advancement of ZYIL1 into pivotal clinical trials in CAPS patients.

Pankaj R. Patel, Chairman, Zydus Lifesciences Ltd., said, "This Orphan Drug Designation from the USFDA underlines the urgent need to develop ZYIL1 to address this rare and critical chronic inflammatory condition CAPS, a high unmet medical need."

"ZYIL1 demonstrated Phase 2 proof-ofconcept in CAPS patients showing rapid clinical improvement as early as day 3 which sustained till the end of the treatment, in addition to the improvement in inflammatory markers like Serum Amyloid A (SAA), CRP, IL-6. There were no Serious Adverse Events (SAE’s) observed."

CAPS is a rare, life-long auto-inflammatory condition, caused by NLRP3 activating mutations and is classified under orphan diseases.

The chronic inflammation due to IL-1beta release in CAPS patients leads to urticaria-like rash, fever, arthralgia, and increased risk of amyloidosis.

CAPS patients also experience multiple neurological complications like sensorineural hearing loss, migraine, headache, aseptic meningitis and myalgia.

Bone deformities and neurological impairment have been reported in Neonatal Onset Multisystem Inflammatory Disease (NOMID), the most severe form of CAPS.