Dr. Nima Nassiri

New Capabilities

As of May 2026: Leading ongoing clinical trial at UCLA

On May 4, 2025, surgeons at UCLA performed the first successful human bladder transplant. Oscar Larrainzar, a 41-year-old father of four who'd spent seven years on dialysis after losing his bladder and both kidneys to cancer, received both organs in an eight-hour procedure. The kidney started producing urine immediately. Two days after going home, Larrainzar urinated on his own for the first time in seven years.

Updated May 19