Table 5.

Suggested diagnostic criteria for ETP-ALL.

ALL cases must be positive for cytoplasmic CD3 positive and CD7 plus the following:
Mandatory criteria (All of the criteria must be present):
	1. CD1a negative
	2. CD8 negative
	3. Surface CD3 negative
	4. TCR alpha/beta and TCR gamma/delta negative
	5. CD5 negative or dim (<75% of blasts positive)
	6. One or more stem cell/myeloid antigens as stated in WHO classification (CD34, HLA-DR, CD13, CD33, CD117, CD11b, and CD65)
Positivity of these markers do not exclude the diagnosis of ETP-ALL	CD2, CD4, CD10