CD8A and acute lymphoblastic leukemia: When analysing five HLA-A2 positive adult ALL patient samples on a pMHC array [12] we did not detect any survivin-specific T cells that had bound to either of the HLA-A2 restricted survivin epitopes examined (survivin 5–11 or 96–104; [21]) even at a detection sensitivity of at least 0.02% of the CD8+ population.