HSCs Flashcards
Maximum volume marrow collection
20mL/kg
Donor characteristic associated with enhanced survival
Age
% decrease in survival for each HLA mismatch
5-10%
Cell surface antigen used to identity HSCs
CD34
Advantages of UCB
Less stringent HLA matching required
More rapidly available
Factors affecting engraftment
HLA match
Dose
Source
Rates of engraftment
Greatest with peripheral blood (14 day)
Marrow (21 days)
Then cord blood
Minimum dose for marrow collection for efficient engraftment
2-3 x10^8 nucleated cells/kg
Minimum dose for peripheral blood HSCs
2x10^6 CD34+ cells/kg
Most common mobilization agent for PB Collection
G-CSF
Cryoprotectant used most commonly for HSC storage
DMSO
Storage temp
Generally
UCB Collection consent and health history from:
Mother (father consent and history not necessary)
History and donor testing for UCB required within:
7 days of collection
Testing of UCB for hemoglobinopathies
Sickle or thalassemia trait may be banked
Homozygous abnormal or compound heterozygous abnormal are unsuitable for transplant