FDA Accepts for Review Hansa Biopharma Imlifidase BLA
FDA has accepted and will review the Hansa Biopharma BLA for imlifidase, which has been conditionally approved as Idefirix in several other jurisdictions for the desensitization treatment of highly sensitized adult kidney transplant patients. A company statement says imlifidase is a unique IgG-cleaving enzyme that rapidly inactivates more than 95% of donor-specific antibodies within two to six hours of administration, providing a crucial window to enable HLA (human leukocyte antigens)-incompatible kidney transplantation.
Hansa says the BLA is supported by the Phase 3 ConfideS trial in kidney transplantation that evaluated kidney function at 12 months in 64 highly sensitized transplant patients with positive crossmatch against a deceased donor. The company says the trial successfully met its primary endpoint, demonstrating significantly improved kidney function in the imlifidase arm at 12 months as measured by mean estimated glomerular filtration rate. A key secondary endpoint, dialysis independence at 12 months, was also statistically significant, Hansa says. The drug reportedly was generally well tolerated, with a safety profile consistent with previous clinical trial experience.