BENGALURU: A 15-year-old boy and a 21-year-old man have undergone paediatric kidney transplant at Aster CMI Hospital in Bengaluru through a two-way donor swap after blood group incompatibility prevented their family members from donating the organ directly. Both patients had willing family donors, but the blood group mismatch made direct transplantation unsuitable. Using Alliance for Paired Donation software, the hospital identified compatible donor-recipient combinations, enabling the two families to exchange donors. Under the arrangement, the teenager received a kidney from the adult patien...