This study focuses on the safety of using unlicensed cord blood units made by the National Cord Blood Program. Cord blood contains special cells that can help treat diseases affecting the blood system. The main goal is to check for any problems when these are given to patients. Problems, also called "adverse reactions," can be mild or severe. Mild means needing some medical help but not too serious. Severe reactions are serious and need major medical treatment, like if someone has a bad allergic reaction or organ failure.

• The study involves patients of any age or gender with blood system disorders.
• It does not include patients using licensed cord blood only or those outside the US.
• Participants will not use manipulated cord blood products.

This study will help decide if these cord blood products are safe for future use. Participants will be closely watched for any adverse reactions after receiving the treatment.