To date, over **60,000 samples** have been stored in Royan Stem Cell Technology Company's HLA bank, which is unparalleled in the region. It's clear that the more samples registered in this bank, the higher the chance of finding a suitable sample for transplantation. An important point is that each cell has 6 antigen loci, and for a successful transplant between donor and recipient, these 6 antigen loci must match. The information registered in this bank is completely confidential, and since the samples are the property of the families, **written consent from the family will always be obtained** for any use of HLA information and ultimately for a transplant decision. For this purpose, a written correspondence from the transplant specialist to Royan Cord Blood Bank is mandatory.