Table 4. Consensus criteria for relapse... | American Society of Hematology

Table 4.

Consensus criteria for relapse definition in pediatric ALL: BM relapse (MRD unavailable)

BM 1		BM 2^*
Cytomorphology	Others	Cytomorphology
M3	Not necessary to define relapse	Not necessary to define relapse
M2	One other test^‡ with ≥1% blasts	Not necessary to define relapse
M2	None	M2
M1	Two other tests^† with ≥1% blasts	Not necessary to define relapse

BM 1		BM 2^*
Cytomorphology	Others	Cytomorphology
M3	Not necessary to define relapse	Not necessary to define relapse
M2	One other test^‡ with ≥1% blasts	Not necessary to define relapse
M2	None	M2
M1	Two other tests^† with ≥1% blasts	Not necessary to define relapse

Second bone marrow evaluation ≥1 wk later.

FISH/karyotype/PCR demonstrating leukemia-specific marker.