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Dr. Nima Nassiri

Dr. Nima Nassiri

Lead Surgeon, Director of UCLA Vascularized Composite Bladder Allograft Transplant Program

Appears in 1 story

Notable Quotes

This first attempt at bladder transplantation has been over four years in the making. The kidney immediately made a large volume of urine, and the patient's kidney function improved immediately. There was no need for any dialysis after surgery, and the urine drained properly into the new bladder.

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The first human bladder transplant

New Capabilities

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 Jan 7