Binary clinical trial risk: Phase 2/3 failure in kidney transplantation or IgA nephropathy would eliminate primary value drivers and potentially require strategic pivot or wind-down
Regulatory pathway uncertainty for novel immunosuppression mechanisms given FDA's conservative approach to transplant therapies and requirement for long-term safety data
Reimbursement challenges in transplant market where payers scrutinize high-cost biologics versus generic immunosuppressants (tacrolimus, mycophenolate)
Manufacturing scale-up risk for antibody production if trials succeed, requiring CMO partnerships and significant capital investment
Established immunosuppression regimens (calcineurin inhibitors, mTOR inhibitors) have decades of safety data and generic pricing, creating high bar for adoption
Competing CD40/CD40L pathway programs from larger biotechs with superior resources and faster development timelines
Potential for CAR-T or tolerance-inducing therapies to disrupt transplant immunosuppression paradigm entirely
Equity dilution risk: With -$30M annual burn and $100M+ market cap, future financings will significantly dilute existing shareholders
Cash runway pressure if trials extend beyond 2027 timeline or require additional studies for regulatory approval
Minimal debt provides limited financial flexibility but also means no covenant protection; equity is only funding source
StructuralCompetitiveBalance Sheet