Univariate Cox regression model evaluations of predictors of PFS
Characteristic . | N . | Event, n . | HR . | 95% CI . | P value . |
---|---|---|---|---|---|
Age | 47 | 38 | 0.96 | 0.92-1.00 | .048 |
Sex | 47 | 38 | |||
Female | — | — | |||
Male | 1.03 | 0.52-2.05 | .93 | ||
ECOG PS | 47 | 38 | |||
0 | — | — | |||
1 | 1.60 | 0.84-3.06 | .15 | ||
Prior history of or current Richter transformation | 47 | 38 | |||
No | — | — | |||
Yes | 1.68 | 0.76-3.68 | .20 | ||
Prior history of Richter transformation | 47 | 38 | |||
0 | — | — | |||
1 | 1.57 | 0.65-3.78 | .31 | ||
Current Richter transformation | 47 | 38 | |||
0 | — | — | |||
1 | 1.76 | 0.41-7.50 | .44 | ||
No. of prior therapies | 47 | 38 | 1.04 | 0.88-1.22 | .68 |
Prior fludarabine | 47 | 38 | |||
No | — | — | |||
Yes | 0.95 | 0.47-1.91 | .88 | ||
Prior bendamustine | 47 | 38 | |||
No | — | — | |||
Yes | 0.98 | 0.52-1.86 | .96 | ||
Prior venetoclax | 47 | 38 | |||
No | — | — | |||
Yes | 1.87 | 0.97-3.61 | .061 | ||
Complex karyotype∗ | 46 | 37 | |||
No | — | — | |||
Yes | 1.82 | 0.79-4.17 | .16 | ||
17p deletion | 47 | 38 | |||
No | — | — | |||
Yes | 1.30 | 0.63-2.69 | .47 | ||
Intolerance to and/or progression on ibrutinib | 47 | 38 | |||
No | — | — | |||
Yes | 0.38 | 0.09-1.63 | .19 | ||
Intolerance to ibrutinib | 47 | 38 | |||
No | — | — | |||
Yes | 0.79 | 0.28-2.23 | .66 | ||
Progression on ibrutinib | 47 | 38 | |||
No | — | — | |||
Yes | 1.13 | 0.44-2.89 | .80 | ||
Prior allogeneic HCT | 47 | 38 | |||
No | — | — | |||
Yes | 0.53 | 0.19-1.50 | .23 | ||
Concurrent ibrutinib with CD19 CAR T-cell therapy | 47 | 38 | |||
Ibrutinib | — | — | |||
No ibrutinib | 1.16 | 0.60-2.23 | .66 | ||
Bridging chemotherapy after leukapheresis | 47 | 38 | |||
No | — | — | |||
Yes | 1.42 | 0.62-3.23 | .40 | ||
Absolute lymphocyte count (109/L) | 47 | 38 | 0.98 | 0.95-1.01 | .15 |
Percentage of CLL cell count in the blood by MFC (% of WBCs) | 45 | 37 | 0.99 | 0.98-1.00 | .13 |
Percentage of CLL cells in the BM by IHC (%) | 41 | 32 | 0.99 | 0.98-1.00 | .084 |
Percentage of CLL cells in the BM by MFC (%) | 47 | 38 | 0.99 | 0.98-1.00 | .13 |
Serum LDH concentration (log10U/L) | 47 | 38 | 1.28 | 0.43-3.81 | .66 |
Tumorcross-sectionalarea (log10mm2) | 46 | 37 | 1.17 | 0.90-1.52 | .24 |
Maximum SUV | 35 | 27 | 1.15 | 1.07-1.23 | <.001 |
Bulky disease† | 47 | 38 | |||
No | — | — | |||
Yes | 2.12 | 1.06-4.26 | .034 | ||
Concurrent or sequential LD | 47 | 38 | |||
Concurrent Cy/Flu | — | — | |||
Sequential Cy/Flu | 0.74 | 0.37-1.47 | .39 | ||
Other | 4.17 | 1.18-14.7 | .027 | ||
CAR T-cell dose level (cells per kg) | 47 | 38 | |||
2 × 105 | — | — | |||
2 × 106 | 1.14 | 0.40-3.23 | .81 | ||
2 × 107 | 2.62 | 0.28-24.1 | .40 | ||
CRS grade‡ | 47 | 38 | 0.98 | 0.71-1.36 | .90 |
Neurotoxicity grade§ | 47 | 38 | 0.97 | 0.77-1.23 | .82 |
Day +28 nodal response by CT | 42 | 33 | |||
PR/SD/PD | — | — | |||
CR | 0.55 | 0.17-1.79 | .32 | ||
Day +28 nodal response by PET-CT | 26 | 20 | |||
PR/SD/PD | — | — | |||
CR | 0.13 | 0.04-0.40 | <.001 | ||
Day +28 response by 2018 iwCLL criteria | 47 | 38 | |||
PR/SD/PD | — | — | |||
CR/CRi | 0.59 | 0.25-1.42 | .24 | ||
Day +28 BM MRD by MFC | 46 | 37 | |||
Positive | — | — | |||
Negative | 0.08 | 0.03-0.22 | <.001 | ||
Day +28 BM MRD by IGH NGS | 29 | 21 | |||
Positive | — | — | |||
Negative | 0.21 | 0.08-0.51 | <.001 | ||
Peak CD4+CAR T-cell expansion (log10cells per μL) | 47 | 38 | 0.47 | 0.33-0.69 | <.001 |
Peak CD8+CAR T-cell expansion (log10cells per μL) | 47 | 38 | 0.49 | 0.36-0.68 | <.001 |
CAR T-cell persistence (CAR transgene copies per μg genomic DNA)‖ | — | — | 0.56 | 0.44-0.72 | <.001 |
Characteristic . | N . | Event, n . | HR . | 95% CI . | P value . |
---|---|---|---|---|---|
Age | 47 | 38 | 0.96 | 0.92-1.00 | .048 |
Sex | 47 | 38 | |||
Female | — | — | |||
Male | 1.03 | 0.52-2.05 | .93 | ||
ECOG PS | 47 | 38 | |||
0 | — | — | |||
1 | 1.60 | 0.84-3.06 | .15 | ||
Prior history of or current Richter transformation | 47 | 38 | |||
No | — | — | |||
Yes | 1.68 | 0.76-3.68 | .20 | ||
Prior history of Richter transformation | 47 | 38 | |||
0 | — | — | |||
1 | 1.57 | 0.65-3.78 | .31 | ||
Current Richter transformation | 47 | 38 | |||
0 | — | — | |||
1 | 1.76 | 0.41-7.50 | .44 | ||
No. of prior therapies | 47 | 38 | 1.04 | 0.88-1.22 | .68 |
Prior fludarabine | 47 | 38 | |||
No | — | — | |||
Yes | 0.95 | 0.47-1.91 | .88 | ||
Prior bendamustine | 47 | 38 | |||
No | — | — | |||
Yes | 0.98 | 0.52-1.86 | .96 | ||
Prior venetoclax | 47 | 38 | |||
No | — | — | |||
Yes | 1.87 | 0.97-3.61 | .061 | ||
Complex karyotype∗ | 46 | 37 | |||
No | — | — | |||
Yes | 1.82 | 0.79-4.17 | .16 | ||
17p deletion | 47 | 38 | |||
No | — | — | |||
Yes | 1.30 | 0.63-2.69 | .47 | ||
Intolerance to and/or progression on ibrutinib | 47 | 38 | |||
No | — | — | |||
Yes | 0.38 | 0.09-1.63 | .19 | ||
Intolerance to ibrutinib | 47 | 38 | |||
No | — | — | |||
Yes | 0.79 | 0.28-2.23 | .66 | ||
Progression on ibrutinib | 47 | 38 | |||
No | — | — | |||
Yes | 1.13 | 0.44-2.89 | .80 | ||
Prior allogeneic HCT | 47 | 38 | |||
No | — | — | |||
Yes | 0.53 | 0.19-1.50 | .23 | ||
Concurrent ibrutinib with CD19 CAR T-cell therapy | 47 | 38 | |||
Ibrutinib | — | — | |||
No ibrutinib | 1.16 | 0.60-2.23 | .66 | ||
Bridging chemotherapy after leukapheresis | 47 | 38 | |||
No | — | — | |||
Yes | 1.42 | 0.62-3.23 | .40 | ||
Absolute lymphocyte count (109/L) | 47 | 38 | 0.98 | 0.95-1.01 | .15 |
Percentage of CLL cell count in the blood by MFC (% of WBCs) | 45 | 37 | 0.99 | 0.98-1.00 | .13 |
Percentage of CLL cells in the BM by IHC (%) | 41 | 32 | 0.99 | 0.98-1.00 | .084 |
Percentage of CLL cells in the BM by MFC (%) | 47 | 38 | 0.99 | 0.98-1.00 | .13 |
Serum LDH concentration (log10U/L) | 47 | 38 | 1.28 | 0.43-3.81 | .66 |
Tumorcross-sectionalarea (log10mm2) | 46 | 37 | 1.17 | 0.90-1.52 | .24 |
Maximum SUV | 35 | 27 | 1.15 | 1.07-1.23 | <.001 |
Bulky disease† | 47 | 38 | |||
No | — | — | |||
Yes | 2.12 | 1.06-4.26 | .034 | ||
Concurrent or sequential LD | 47 | 38 | |||
Concurrent Cy/Flu | — | — | |||
Sequential Cy/Flu | 0.74 | 0.37-1.47 | .39 | ||
Other | 4.17 | 1.18-14.7 | .027 | ||
CAR T-cell dose level (cells per kg) | 47 | 38 | |||
2 × 105 | — | — | |||
2 × 106 | 1.14 | 0.40-3.23 | .81 | ||
2 × 107 | 2.62 | 0.28-24.1 | .40 | ||
CRS grade‡ | 47 | 38 | 0.98 | 0.71-1.36 | .90 |
Neurotoxicity grade§ | 47 | 38 | 0.97 | 0.77-1.23 | .82 |
Day +28 nodal response by CT | 42 | 33 | |||
PR/SD/PD | — | — | |||
CR | 0.55 | 0.17-1.79 | .32 | ||
Day +28 nodal response by PET-CT | 26 | 20 | |||
PR/SD/PD | — | — | |||
CR | 0.13 | 0.04-0.40 | <.001 | ||
Day +28 response by 2018 iwCLL criteria | 47 | 38 | |||
PR/SD/PD | — | — | |||
CR/CRi | 0.59 | 0.25-1.42 | .24 | ||
Day +28 BM MRD by MFC | 46 | 37 | |||
Positive | — | — | |||
Negative | 0.08 | 0.03-0.22 | <.001 | ||
Day +28 BM MRD by IGH NGS | 29 | 21 | |||
Positive | — | — | |||
Negative | 0.21 | 0.08-0.51 | <.001 | ||
Peak CD4+CAR T-cell expansion (log10cells per μL) | 47 | 38 | 0.47 | 0.33-0.69 | <.001 |
Peak CD8+CAR T-cell expansion (log10cells per μL) | 47 | 38 | 0.49 | 0.36-0.68 | <.001 |
CAR T-cell persistence (CAR transgene copies per μg genomic DNA)‖ | — | — | 0.56 | 0.44-0.72 | <.001 |
PFS of response-evaluable patients (n = 47).
CRS, cytokine release syndrome; ECOG PS, Eastern Cooperative Oncology Group performance status; IGH, immunoglobulin heavy chain; IHC, immunohistochemistry; LDH, lactate dehydrogenase; WBC, white blood cell.
Defined as ≥3 chromosomal abnormalities.
Defined as largest lymph node ≥ 5 cm.
By Lee 2014 CRS criteria.6
By Common Terminology Criteria for Adverse Events version 4.03 criteria.7
Modeled as a time-dependent continuous covariate (limit of quantitation: 10 copies per μg genomic DNA).