Univariate Cox regression models of predictors of DOR
Characteristic . | N . | Event, n . | HR . | 95% CI . | P value . |
---|---|---|---|---|---|
Age | 33 | 24 | 0.96 | 0.91-1.02 | .21 |
Sex | 33 | 24 | |||
Female | — | — | |||
Male | 0.89 | 0.39-2.04 | .79 | ||
ECOG score | 33 | 24 | |||
0 | — | — | |||
1 | 1.82 | 0.81-4.08 | .15 | ||
Prior history of or current Richter transformation | 33 | 24 | |||
No | — | — | |||
Yes | 1.50 | 0.51-4.40 | .46 | ||
Prior history of Richter transformation | 33 | 24 | |||
No | — | — | |||
Yes | 0.83 | 0.19-3.54 | .80 | ||
Current Richter transformation | 33 | 24 | |||
No | — | — | |||
Yes | 5.14 | 1.10-23.9 | .037 | ||
No. of prior therapies | 33 | 24 | 1.03 | 0.84-1.26 | .79 |
Prior fludarabine | 33 | 24 | |||
No | — | — | |||
Yes | 0.68 | 0.25-1.82 | .44 | ||
Prior bendamustine | 33 | 24 | |||
No | — | — | |||
Yes | 1.02 | 0.46-2.28 | .96 | ||
Prior venetoclax | 33 | 24 | |||
No | — | — | |||
Yes | 2.86 | 1.26-6.52 | .012 | ||
Complex karyotype∗ | 33 | 24 | |||
No | — | — | |||
Yes | 1.85 | 0.69-4.99 | .22 | ||
17p deletion | 33 | 24 | |||
No | — | — | |||
Yes | 2.14 | 0.73-6.31 | .17 | ||
Intolerance to and/or progression on ibrutinib | 33 | 24 | |||
No | — | — | |||
Yes | 0.29 | 0.04-2.30 | .24 | ||
Intolerance to ibrutinib | 33 | 24 | |||
No | — | — | |||
Yes | 0.60 | 0.14-2.54 | .48 | ||
Progression on ibrutinib | 33 | 24 | |||
No | — | — | |||
Yes | 1.19 | 0.35-4.00 | .78 | ||
Prior allogeneic HCT | 33 | 24 | |||
No | — | — | |||
Yes | 0.39 | 0.09-1.67 | .20 | ||
Concurrent ibrutinib with CD19 CAR T-cell therapy | 33 | 24 | |||
No | — | — | |||
Yes | 1.19 | 0.53-2.70 | .67 | ||
Bridging chemotherapy after leukapheresis | 33 | 24 | |||
No | — | — | |||
Yes | 0.87 | 0.26-2.92 | .82 | ||
Absolute lymphocyte count (109/L) | 33 | 24 | 0.97 | 0.93-1.01 | .15 |
Percentage of CLL cell count in the blood by MFC (% of WBCs) | 32 | 24 | 0.98 | 0.97-1.00 | .057 |
Percentage of CLL cells in the BM by IHC (%) | 30 | 21 | 0.99 | 0.98-1.01 | .40 |
Percentage of CLL cells in the BM by MFC (%) | 33 | 24 | 0.99 | 0.98-1.01 | .32 |
Serum LDH concentration (log10U/L) | 33 | 24 | 0.89 | 0.21-3.80 | .87 |
Tumorcross-sectionalarea (log10mm2) | 32 | 23 | 1.06 | 0.82-1.38 | .65 |
Maximum SUV | 25 | 17 | 1.14 | 0.94-1.37 | .18 |
Bulky disease† | 33 | 24 | |||
No | — | — | |||
Yes | 1.91 | 0.75-4.85 | .17 | ||
Concurrent or sequential LD | 33 | 24 | |||
Concurrent Cy/Flu | — | — | |||
Sequential Cy/Flu | 0.69 | 0.30-1.58 | .38 | ||
CAR T-cell dose level (cells per kg) | 33 | 24 | |||
2 × 105 | — | — | |||
2 × 106 | 0.65 | 0.22-1.94 | .44 | ||
2 × 107 | 5.32 | 0.51-55.5 | .16 | ||
CRS grade‡ | 33 | 24 | 0.89 | 0.59-1.35 | .59 |
Neurotoxicity grade§ | 33 | 24 | 1.01 | 0.76-1.35 | .94 |
Day +28 nodal response by CT | 29 | 20 | |||
SD | — | — | |||
PR | 0.12 | 0.02-0.65 | .014 | ||
CR | 0.11 | 0.02-0.83 | .033 | ||
Day +28 nodal response by PET-CT | 19 | 13 | |||
PR | — | — | |||
CR | 0.17 | 0.05-0.64 | .008 | ||
Day +28 response by 2018 iwCLL criteria | 33 | 24 | |||
PR | — | — | |||
CR/CRi | 0.91 | 0.36-2.30 | .85 | ||
Day +28 BM MRD by MFC | 33 | 24 | |||
Positive | — | — | |||
Negative | 0.03 | 0.01-0.15 | <.001 | ||
Day +28 BM MRD by IGH NGS | 25 | 17 | |||
Positive | — | — | |||
Negative | 0.25 | 0.09-0.68 | .006 | ||
Peak CD4+CAR T-cell expansion (log10cells per μL) | 33 | 24 | 0.49 | 0.28-0.85 | .011 |
Peak CD8+CAR T-cell expansion (log10cells per μL) | 33 | 24 | 0.53 | 0.33-0.85 | .009 |
CAR T-cell persistence (CAR transgene copies per μg genomic DNA)‖ | — | — | 0.56 | 0.39-0.81 | .002 |
Characteristic . | N . | Event, n . | HR . | 95% CI . | P value . |
---|---|---|---|---|---|
Age | 33 | 24 | 0.96 | 0.91-1.02 | .21 |
Sex | 33 | 24 | |||
Female | — | — | |||
Male | 0.89 | 0.39-2.04 | .79 | ||
ECOG score | 33 | 24 | |||
0 | — | — | |||
1 | 1.82 | 0.81-4.08 | .15 | ||
Prior history of or current Richter transformation | 33 | 24 | |||
No | — | — | |||
Yes | 1.50 | 0.51-4.40 | .46 | ||
Prior history of Richter transformation | 33 | 24 | |||
No | — | — | |||
Yes | 0.83 | 0.19-3.54 | .80 | ||
Current Richter transformation | 33 | 24 | |||
No | — | — | |||
Yes | 5.14 | 1.10-23.9 | .037 | ||
No. of prior therapies | 33 | 24 | 1.03 | 0.84-1.26 | .79 |
Prior fludarabine | 33 | 24 | |||
No | — | — | |||
Yes | 0.68 | 0.25-1.82 | .44 | ||
Prior bendamustine | 33 | 24 | |||
No | — | — | |||
Yes | 1.02 | 0.46-2.28 | .96 | ||
Prior venetoclax | 33 | 24 | |||
No | — | — | |||
Yes | 2.86 | 1.26-6.52 | .012 | ||
Complex karyotype∗ | 33 | 24 | |||
No | — | — | |||
Yes | 1.85 | 0.69-4.99 | .22 | ||
17p deletion | 33 | 24 | |||
No | — | — | |||
Yes | 2.14 | 0.73-6.31 | .17 | ||
Intolerance to and/or progression on ibrutinib | 33 | 24 | |||
No | — | — | |||
Yes | 0.29 | 0.04-2.30 | .24 | ||
Intolerance to ibrutinib | 33 | 24 | |||
No | — | — | |||
Yes | 0.60 | 0.14-2.54 | .48 | ||
Progression on ibrutinib | 33 | 24 | |||
No | — | — | |||
Yes | 1.19 | 0.35-4.00 | .78 | ||
Prior allogeneic HCT | 33 | 24 | |||
No | — | — | |||
Yes | 0.39 | 0.09-1.67 | .20 | ||
Concurrent ibrutinib with CD19 CAR T-cell therapy | 33 | 24 | |||
No | — | — | |||
Yes | 1.19 | 0.53-2.70 | .67 | ||
Bridging chemotherapy after leukapheresis | 33 | 24 | |||
No | — | — | |||
Yes | 0.87 | 0.26-2.92 | .82 | ||
Absolute lymphocyte count (109/L) | 33 | 24 | 0.97 | 0.93-1.01 | .15 |
Percentage of CLL cell count in the blood by MFC (% of WBCs) | 32 | 24 | 0.98 | 0.97-1.00 | .057 |
Percentage of CLL cells in the BM by IHC (%) | 30 | 21 | 0.99 | 0.98-1.01 | .40 |
Percentage of CLL cells in the BM by MFC (%) | 33 | 24 | 0.99 | 0.98-1.01 | .32 |
Serum LDH concentration (log10U/L) | 33 | 24 | 0.89 | 0.21-3.80 | .87 |
Tumorcross-sectionalarea (log10mm2) | 32 | 23 | 1.06 | 0.82-1.38 | .65 |
Maximum SUV | 25 | 17 | 1.14 | 0.94-1.37 | .18 |
Bulky disease† | 33 | 24 | |||
No | — | — | |||
Yes | 1.91 | 0.75-4.85 | .17 | ||
Concurrent or sequential LD | 33 | 24 | |||
Concurrent Cy/Flu | — | — | |||
Sequential Cy/Flu | 0.69 | 0.30-1.58 | .38 | ||
CAR T-cell dose level (cells per kg) | 33 | 24 | |||
2 × 105 | — | — | |||
2 × 106 | 0.65 | 0.22-1.94 | .44 | ||
2 × 107 | 5.32 | 0.51-55.5 | .16 | ||
CRS grade‡ | 33 | 24 | 0.89 | 0.59-1.35 | .59 |
Neurotoxicity grade§ | 33 | 24 | 1.01 | 0.76-1.35 | .94 |
Day +28 nodal response by CT | 29 | 20 | |||
SD | — | — | |||
PR | 0.12 | 0.02-0.65 | .014 | ||
CR | 0.11 | 0.02-0.83 | .033 | ||
Day +28 nodal response by PET-CT | 19 | 13 | |||
PR | — | — | |||
CR | 0.17 | 0.05-0.64 | .008 | ||
Day +28 response by 2018 iwCLL criteria | 33 | 24 | |||
PR | — | — | |||
CR/CRi | 0.91 | 0.36-2.30 | .85 | ||
Day +28 BM MRD by MFC | 33 | 24 | |||
Positive | — | — | |||
Negative | 0.03 | 0.01-0.15 | <.001 | ||
Day +28 BM MRD by IGH NGS | 25 | 17 | |||
Positive | — | — | |||
Negative | 0.25 | 0.09-0.68 | .006 | ||
Peak CD4+CAR T-cell expansion (log10cells per μL) | 33 | 24 | 0.49 | 0.28-0.85 | .011 |
Peak CD8+CAR T-cell expansion (log10cells per μL) | 33 | 24 | 0.53 | 0.33-0.85 | .009 |
CAR T-cell persistence (CAR transgene copies per μg genomic DNA)‖ | — | — | 0.56 | 0.39-0.81 | .002 |
CRS, cytokine release syndrome; ECOG, Eastern Cooperative Oncology Group; 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).