Richard “Rick” Slayman, who made history at age 62 as the first person to receive a kidney from a genetically modified pig, has died about two months after the procedure.

Massachusetts General Hospital, where Mr. Slayman had the operation, said in a statement on Saturday that its transplant team was “deeply saddened” at his death. The hospital said it had “no indication that it was the result of his recent transplant.”

Mr. Slayman, who was Black, had end-stage kidney disease, a condition that affects more than 800,000 people in the United States, according to the federal government, with disproportionately higher rates among Black people.