Table 1 Patient covariates (N = 43).

From: Donor-derived CD19 CAR-T cell therapy of relapse of CD19-positive B-ALL post allotransplant

Male

29

Age (Median; range)

24 (4–60)

Donor

   HLA-identical sibling

17

   HLA-haplotype-matched

26

Graft

   Blood

17

   Blood and bone marrow

26

BCR/ABL1 positive

   Yes

5

   No

38

Cytogenetics

   Abnormal

14

   Normal

29

Mutation

   Yes

23

   No

20

Transplant conditioning regimen

   BU/CY

17

   BU/CY/Ara-C/CCNU

26

Posttransplant immune suppression

   CSA/MMF/MTX

17

   Tacrolimus/MMF/ATG/MTX

26

   Interval from transplant to relapse (mo; median; range)

8 (1–25)

   Interval from relapse to CAR-T (d; median; range)

42 (35–59)

Therapy for relapse

   Stop immune suppression

12

   DLI

7

   Chemotherapy

19

   Chemotherapy/DLI

5

Bone marrow blasts pre infusion

   0.01-(MRD-positive)

13

   5–50%

20

   >50%

10

Co-stimulatory molecular

   CD28

18

   4–1BB

25

Preinfusion therapy

   Regimen 1

34

   Regimen 2

5

   Regimen 3

4

CAR-T cell dose (×10E + 6/kg; median; range)

1.76 (0.4–12)

   <1

4

   1~2

26

   >2

13

  1. HLA human leukocyte antigen, BU busulfan, CY cyclophosphamide, Ara-C cytarabine, CCNU lomustine, CSA cyclosporine, MMF mycophenolate mofetil, MTX methotrexate, ATG anti-thymocyte globulin, MRD measurable residual disease, DLI donor lymphocyte infusion.