Tim Andrews, 66, was diagnosed with end-stage kidney disease more than two years ago. Since then, he's treated his condition with dialysis, leaving him constantly fatigued and unable to keep up with the pace of regular activities.

The recipient was Tim Andrews, a 66-year-old New Hampshire resident who had end-stage kidney disease and was on dialysis for more than two years.

FDA clears United Therapeutics for human trials of pig-to-human kidney transplants. Trial involves gene-edited pig kidneys for patients with end-stage renal disease. Study aims to provide alternative for 500,000 Americans on dialysis.