Table 2.

Chemotherapy and treatment course

Induction courseValue
Asp in induction course, n (%) 233 (100) 
Asp formulation  
PEG-Asp 229 (98.3) 
Other Asp formulation 3 (1.3) 
Not available 1 (0.4) 
Route of administration  
IV 205 (88.0) 
Intramuscular 25 (10.7) 
Subcutaneous 1 (0.4) 
Not available 2 (0.9) 
No. of doses of Asp  
216 (92.7) 
15 (6.4) 
Not available 2 (0.9) 
Dose of Asp, IU/m2  
1000 41 (17.6) 
2000 41 (17.6) 
2500 141 (60.5) 
Not available 10 (4.3) 
Dose of Asp capped  
Yes 22 (9.4) 
Dose cap 2000 IU 
Dose cap 3750 IU 18 
Other 
No 173 (74.2) 
Not available 38 (16.3) 
Induction chemotherapy regimen, n (%)  
CALGB 10403 78 (33.5) 
Linker regimen 42 (18.0) 
Chemotherapy + TKI 25 (10.7) 
ECOG E1910 18 (7.7) 
CALGB 8811 (Larson regimen) 17 (7.3) 
COG AALL 0232 7 (3.0) 
COG AALL 1131 9 (3.9) 
COG AALL 1231 6 (2.6) 
Other 29 (12.4) 
Not available 2 (0.9) 
Steroid with induction, n (%)  
Dexamethasone 92 (39.5) 
Prednisone 110 (47.2) 
Methylprednisolone 2 (0.9) 
Unknown steroid type 8 (3.4) 
None or not available 21 (9.4) 
Central catheters in induction, n (%)  
No. of central catheters  
6 (2.6) 
171 (73.4) 
≥2 44 (18.9) 
Not available 12 (5.2) 
Type of central catheters  
PICC 98 (42.1) 
CVC  101 (43.3) 
Port 15 (6.4) 
None or not available 19 (8.2) 
Thrombosis and bleeding prophylaxis, n (%)  
No. of patients monitored with AT levels 96 (41.2) 
No. of patients receiving AT repletion 58 (24.9) 
No. of patients receiving prophylactic anticoagulation 41 (17.6) 
Heparin 5 (12.2) 
Enoxaparin 36 (87.8) 
Duration of anticoagulation, median (range), d 10 (6.5-18.5) 
No. of patients receiving AT repletion and prophylactic anticoagulation 21 (9.0) 
No. of patients receiving therapeutic anticoagulation 8 (3.4) 
No. of patients receiving cryoprecipitate 145 (62.2) 
Fibrinogen trigger for cryoprecipitate transfusion, mg/dL  
<50 3 (2.1) 
50-99 116 (80.0) 
100-150 25 (10.7) 
No. of patients receiving FFP 22 (9.4) 
Laboratory values, median (range)  
Platelet nadir, ×109/L 12 (7-46) 
Fibrinogen nadir, mg/dL 90 (72-124) 
AT nadir, % 50.5 (44-58.5) 
Induction courseValue
Asp in induction course, n (%) 233 (100) 
Asp formulation  
PEG-Asp 229 (98.3) 
Other Asp formulation 3 (1.3) 
Not available 1 (0.4) 
Route of administration  
IV 205 (88.0) 
Intramuscular 25 (10.7) 
Subcutaneous 1 (0.4) 
Not available 2 (0.9) 
No. of doses of Asp  
216 (92.7) 
15 (6.4) 
Not available 2 (0.9) 
Dose of Asp, IU/m2  
1000 41 (17.6) 
2000 41 (17.6) 
2500 141 (60.5) 
Not available 10 (4.3) 
Dose of Asp capped  
Yes 22 (9.4) 
Dose cap 2000 IU 
Dose cap 3750 IU 18 
Other 
No 173 (74.2) 
Not available 38 (16.3) 
Induction chemotherapy regimen, n (%)  
CALGB 10403 78 (33.5) 
Linker regimen 42 (18.0) 
Chemotherapy + TKI 25 (10.7) 
ECOG E1910 18 (7.7) 
CALGB 8811 (Larson regimen) 17 (7.3) 
COG AALL 0232 7 (3.0) 
COG AALL 1131 9 (3.9) 
COG AALL 1231 6 (2.6) 
Other 29 (12.4) 
Not available 2 (0.9) 
Steroid with induction, n (%)  
Dexamethasone 92 (39.5) 
Prednisone 110 (47.2) 
Methylprednisolone 2 (0.9) 
Unknown steroid type 8 (3.4) 
None or not available 21 (9.4) 
Central catheters in induction, n (%)  
No. of central catheters  
6 (2.6) 
171 (73.4) 
≥2 44 (18.9) 
Not available 12 (5.2) 
Type of central catheters  
PICC 98 (42.1) 
CVC  101 (43.3) 
Port 15 (6.4) 
None or not available 19 (8.2) 
Thrombosis and bleeding prophylaxis, n (%)  
No. of patients monitored with AT levels 96 (41.2) 
No. of patients receiving AT repletion 58 (24.9) 
No. of patients receiving prophylactic anticoagulation 41 (17.6) 
Heparin 5 (12.2) 
Enoxaparin 36 (87.8) 
Duration of anticoagulation, median (range), d 10 (6.5-18.5) 
No. of patients receiving AT repletion and prophylactic anticoagulation 21 (9.0) 
No. of patients receiving therapeutic anticoagulation 8 (3.4) 
No. of patients receiving cryoprecipitate 145 (62.2) 
Fibrinogen trigger for cryoprecipitate transfusion, mg/dL  
<50 3 (2.1) 
50-99 116 (80.0) 
100-150 25 (10.7) 
No. of patients receiving FFP 22 (9.4) 
Laboratory values, median (range)  
Platelet nadir, ×109/L 12 (7-46) 
Fibrinogen nadir, mg/dL 90 (72-124) 
AT nadir, % 50.5 (44-58.5) 

Data are presented as n (%) and median (interquartile range).

CALGB, Cancer and Leukemia Group B; COG AALL, Children’s Oncology Group for Acute Lymphoblastic Leukemia; TKI, tyrosine kinase inhibitor.

Doses rounded to vial size.

Includes tunneled, nontunneled, and Hickman CVCs.

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