and bleeding. It is possible that the marrow would not recover at all. In that case we will give 
back the portion of your marrow that was frozen without treatment. 
Marking 
No bad effects have been seen with the marking in anyone. Still, there may be risks. It is 
possible that it "recover" in the cell and be able to grow; it might even cause cancer. We think 
this is very unlikely but we cannot rule it out yet. 
ALTERNATIVES 
If you do not wish to have stem cell selection/marking treatment you can still have high-dose 
chemotherapy and bone marrow transplant with untreated marrow. 
STATEMENT OF UNDERSTANDING 
You have the right to ask any questions you want and they will be answered. Before you have 
signed this form you have talked about the transplant with your doctor and all your questions 
have been answered 
Patient 
Physician 
Date 
Parent 
Witness 
Time 
In case of questions or emergencies in reference to this protocol, please contact: 
St. Jude Children’s Research Hospital 
332 North Lauderdale 
Memphis, TN 38105 
(901) 522-0300 
Recombinant DNA Research, Volume 19 
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