Table I.

Patient characteristics.

	First set (n=12)		Second set (n=28)
Variable	Early relapse	Remission	Early relapse	Remission
Median age in years (range)	0.3 (0.2–0.7)	0.4 (0.0–0.6)	4 (1–18)	4 (1–16)
Gender
Female	3	5	5	8
Male	3	1	9	6
KMT2A fusion partner	Positive	Positive	Negative	Negative
ENL	3	3	0	0
AF4	3	3	0	0
Relapse-free survival time (months)	8.5 (1.4–19.3)	51.4 (27.3–77.0)	17 (8.4–36.5)	83.4 (47.3–125.6)

KMT2A: Lysine (K)- specific methyltransferase 2A gene; ENL: Eleven nineteen leukemia; AF4: ALL-1 fuse gene from chromosome 4.