CellCentric Secures $220 Million Series D Financing to Advance First-in-Class Oral p300/CBP Inhibitor Inobrodib for Multiple Myeloma On May 6, 2026, CellCentric, a clinical-stage biotechnology company developing inobrodib—a first-in-class oral p300/CBP inhibitor for multiple myeloma—announced the completion of a $220 million oversubscribed Series D financing. Led by Venrock Healthcare Capital Partners with participation from Fidelity, Sofinova Partners, HBM Healthcare, and existing investors including RA Capital Management, Forbion, Pfizer, Avego BioScience Capital, and BrightEdge of the American Cancer Society, the funding will support pivotal clinical development of inobrodib, including the ongoing Phase 2 DOMMINO-1 trial in the UK and US and the planned global Phase 3 DOMMINO-2 trial in the second half of 2026. The proceeds will also expand inobrodib’s evaluation in combination and maintenance settings. Inobrodib, combined with pomalidomide and dexamethasone (InoPd), demonstrated a doubling of response rates versus historical controls in heavily pretreated relapsed/refractory multiple myeloma patients (median five prior lines) at the 20 mg dose in Phase 2 data presented at ASH 2025. With cash runway extending to 2029, CellCentric is considering an IPO in 2027 while also exploring strategic acquisition opportunities.