Patient Age (months) sex  race Plts* Absolute peripheral blasts %Blasts in BMA*** Hb ** Immunologic markers Chromosomes Outcome (months) 1 5 male Caucasian 643 0 85 10.8 Non-T, J5- Normal Testicular Relapse (54) 2 46 male Caucasian 520 78 46 9.8 Non-T, J5+ Unknown NED +  (2) 3 84 male Caucasian 509 16424 86 8.7 Non-T, J5+ Hypodiploid  t21 (one metaphase) NED (2) 4 53 male Caucasian 508 4564 87 12.7 T 46XY, 1q- BM relapse(19) 5 72 male Caucasian 498 0 34 12.6 T Normal NED (29) 6 70 male Caucasian 464 4284 98 13 Non-T, J5+ Ph+ NED (42) 7 25 male Caucasian 408 0 81 12.3 Unknown Normal NED (36) This Report 36 male Native American 959 0 80 10.3 CD45(-) Trisomies MLL TEL-AML CNS Relapse (2) *Plts = Platelets (103/mm3) **Hb = Hemoglobin (g/dL) *** BMA = Bone Marrow Aspiration +NED = no evidence of diseases

Table 1: Reported cases of Thrombocytosis in Pediatric ALL [9].