Hansa Biopharma enrolls first patient in U.S. randomized, controlled pivotal trial of imlifidase in highly sensitized kidney transplant patients

LUND, Sweden, Dec. 29, 2021 /PRNewswire/ — Hansa Biopharma AB “Hansa”, (Nasdaq Stockholm: HNSA), the pioneer in IgG-cleaving enzyme technology for rare immunological conditions, today announces that the first patient in its U.S. open-label, randomized, controlled pivotal trial (“ConfIdeS”) has been enrolled at the Columbia University Medical Center, New York. The ConfIdeS trial is evaluating imlifidase as a potential desensitization therapy to enable kidney transplants in highly sensitized patients waiting for a deceased donor kidney through the U.S. kidney allocation system.

“We are pleased to have enrolled the first patient in ConfIdeS, as it brings us one step closer to making this potentially life-saving therapy available to highly sensitized patients in the U.S. who are currently ineligible for kidney transplantation without an effective desensitization treatment,” said Søren Tulstrup, President & CEO of Hansa Biopharma. “We are encouraged by the strong interest shown by leading U.S. transplant centers to participate in this important trial, as it underscores the considerable unmet medical need and highlights the potential of imlifidase to successfully expand access to kidney transplantation for highly sensitized patients in the U.S.”

The trial is expected to randomize 64 highly sensitized kidney transplant patients with a cPRA of ≥99.9%, representing a subset of very highly sensitized patients that continue to be disadvantaged despite prioritization under the U.S. kidney allocation system. When a donor organ becomes available and a positive crossmatch with the intended recipient indicates that the organ is not compatible, the patient will be randomized to either imlifidase desensitization treatment or to a control arm that will receive standard of care (i.e. waiting for a more compatible kidney offer or receiving an experimental desensitization treatment). The study’s primary endpoint for imlifidase to evaluate benefit in transplanting highly sensitized patients is kidney graft function at 12 months, measured by eGFR (estimated Glomerular Filtration Rate).

The goals of the ConfIdeS trial are aligned with the “Advancing American Kidney Health” (“AAKH”) U.S. Executive Order (https://kidney360.asnjournals.org/content/1/6/557), which is centered around three broad goals: (1) reducing the risk of kidney failure; (2) improving access to and the quality of person-centered treatment options; and (3) increasing access to kidney transplants, with the latter two directly tied to expanding transplantation.

“We are very excited about participating in this imlifidase study. Access to organ transplantation truly can make the difference between life and death. Those patients in need of kidney transplantation who are highly sensitized (i.e. immunologically incompatible with the majority of the population) have extremely limited access to transplantation and as a result imlifidase has the potential to be a total `game changer’ in access to transplantation for patients with the most challenging problems. Preliminary data from prior studies indicate that mlifidase has the potential to eliminate the antibodies that are responsible for these immunologic incompatibilities. Thus, we are very optimistic that imlifidase may enable kidney transplantation, increase access to transplantation, improve equity, and offer renewed hope to the thousands of highly sensitized patients with end-stage renal disease” said Lloyd E. Ratner, M.D., M.P.H., Professor of Surgery and Director of Renal and Pancreatic Transplantation at Columbia University, New York. “We anxiously await the outcome of this study.”

Robert A. Montgomery, M.D., Professor of Surgery and Director, NYU Langone Transplant Institute in New York City, has been appointed National Coordinating Investigator for the ConfIdeS trial. The trial will enroll patients at 12 to 15 leading transplantation centers in the U.S.

Completion of enrollment in the trial is expected in the second half of 2022, with a 12-month follow-up study period expected to be completed in the second half of 2023. Results from this pivotal trial are expected to support a potential BLA submission to the FDA under the accelerated approval pathway in the first half of 2024.

Imlifidase has already received conditional marketing approval in Europe for the desensitization treatment of highly sensitized adult kidney transplant patients with positive crossmatch against an available deceased donor.

Further study details can be found on ClinicalTrials.gov NCT04935177.


Klaus Sindahl, Head of Investor Relations
Hansa Biopharma 
Mobile: +46 (0) 709-298 269
E-mail: [email protected]  

Katja Margell
Head of Corporate Communications 
Hansa Biopharma 
Mobile: +46 (0) 768-198 326
E-mail: [email protected]

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20211229 HNSA – PR US RCT First patient enrolled ENG FINAL


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SOURCE Hansa Biopharma AB

Hansa Biopharma enrolls first patient in U.S. randomized, controlled pivotal trial of imlifidase in highly sensitized kidney transplant patients WeeklyReviewer

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