Table 2 Summary of results in human precursor-B ALL xenograft model

From: GSI-I (Z-LLNle-CHO) inhibits γ-secretase and the proteosome to trigger cell death in precursor-B acute lymphoblastic leukemia

Mouse number

% Blasts in blood smear

% Blasts in bone marrow aspirate

Liver infiltration

hCD10 in bone marrow

Untreated

1

0

8–11

+

+++

2

0

3–6

++

+

3

4–6

39–44

++

4

ND

100

+++

+++

5

0–1

2

+

+

6

0

2

+

7

51–56

100

+++

+++

8

41–43

100

+++

+++

9

8–10

41–46

++

+++

 10

12–15

39–43

++

++

 11

0

0–1

+

+

GSI-I treated

1a

0

0

2

41–45

100

+++

+++

3a

0

0

4

1–3

6–11

++

+++

5a

0

0

6

3–6

ND

++

+

7

8–11

ND

++

++

8

19–22

56–58

+++

+++

9a

0

0

 10a

0

0

 11

8–12

44–46

+++

+++

 12a

0

0

  1. Abbreviations: ALL, acute lymphoblastic leukemia; GSI, gamma secretase inhibitor; ND, not done.
  2. aIn all, 6 of 12 treated mice free of disease after GSI-I treatment.
  3. +, few nodules (1–5).
  4. ++, multiple nodules (>5).
  5. +++, large areas infiltrated.