My brother was a donor and we have received word from the bank that he has helped 52 people.

 Let us get comfort from that fact. he would probably be saying something similar to Robert M. Test:

"Give my sight to the man who has never seen a sunrise, a baby's face or love in the eyes of a woman. Give my heart to a person whose own heart has caused nothing but endless days of pain. Take my bones, every muscle, every fiber and nerve in my body, and find a way to make a crippled child walk. If you must bury something, let it be my faults, my weaknesses, and all prejudice against my fellow man. Give my sins to the devil. Give my soul to God. If, by chance, you wish to remember me, do it with a kind deed or word to someone who needs you. If you do all I have asked, I will live forever."