Eledon Pharmaceuticals reports updated data from Phase 1b trial of tegoprubart

Eledon Pharmaceuticals reported results from the Company’s ongoing Phase 1b open-label trial evaluating tegoprubart for the prevention of rejection in patients undergoing de novo kidney transplantation. Results were presented at the American Society of Nephrology Kidney Week 2023 Annual Meeting taking place in Philadelphia, PA from November 2-5, 2023. At the time of data submission, results from the 11 participants in the Phase 1b trial demonstrated that tegoprubart is generally safe and well-tolerated in patients undergoing kidney transplantation. There have been no cases of hyperglycemia, new onset diabetes, tremor, or cytomegalovirus infection commonly seen with tacrolimus. One participant experienced a mild T cell mediated rejection on day 99. This patient was treated for the rejection and remains in the study. There were no cases of graft loss or death. Aggregate mean estimated glomerular filtration rate – a measure of kidney function – was above 70 mL/min/1.73m2 at all reported time points after day 90. Historical studies have reported average eGFRs generally in the low 50 mL/min/1.73m2 range during the first year after kidney transplant using standard of care. One participant has completed the study with an eGFR of 91 at one year and is now enrolled in a Phase 2 open-label extension study, which will evaluate the long-term safety, pharmacokinetics, and efficacy of tegoprubart in participants who have completed one year of treatment in either the ongoing Phase 1b or Phase 2 BESTOW study. The Phase 1b open-label study has enrolled 11 participants who underwent kidney transplantation in Canada, Australia, and the United Kingdom. Each participant received rabbit antithymocyte globulin (ATG) induction and a maintenance regimen consisting of tegoprubart, mycophenolate mofetil, and corticosteroids. The primary endpoint of the study is safety. Other endpoints include characterizing the pharmacokinetic profile of tegoprubart, the incidence of biopsy proven rejection, and eGFR. In September, Eledon announced that the first participant had been dosed in the Company’s Phase 2 BESTOW trial evaluating tegoprubart for the prevention of organ rejection in patients receiving a kidney transplant. The multicenter, two-arm, active comparator clinical study is enrolling approximately 120 participants undergoing kidney transplantation in the United States and other countries to evaluate the safety, pharmacokinetics, and efficacy of tegoprubart compared to the calcineurin inhibitor tacrolimus. The BESTOW trial’s primary endpoint is designed to test the potential superiority of tegoprubart vs. tacrolimus in post kidney transplant kidney function at 12 months as measured by eGFR. The Company expects to complete enrollment at the end of 2024.