Table 1.

Clinical details and antibody status of patients with ALK-positive ALCL

PatientStageTime of plasma collectionFollow-upPlasma reactivity with transfectants*In vitro kinase assay (kd)
Vector–NPM-ALKVector–ALKVector only
IIA Pretreatment CR (15 mo) + (high titer) − 80  
IV 2 mo posttreatment PD (12 mo) + (low titer) − − 80 
IVB Pretreatment Died (10 mo) + (low titer) − 80  
IVB Pretreatment Died (18 mo) + (low titer) − 80  
IV 102 mo posttreatment CR (120 mo) + (low titer) +/− − 80 
IIA Pretreatment CR (25 mo) + (high titer) − 80  
IIIB Pretreatment CR (31 mo) + (high titer) − 80 
IVB Pretreatment PD (9 mo) + (high titer) − 80  
IVB 2 mo posttreatment CR (13 mo) + (high titer) − 80 
10 IB Pretreatment CR (13 mo) + (high titer) − 80  
11 IIA Pretreatment CR (8 mo) + (high titer) − ND 
PatientStageTime of plasma collectionFollow-upPlasma reactivity with transfectants*In vitro kinase assay (kd)
Vector–NPM-ALKVector–ALKVector only
IIA Pretreatment CR (15 mo) + (high titer) − 80  
IV 2 mo posttreatment PD (12 mo) + (low titer) − − 80 
IVB Pretreatment Died (10 mo) + (low titer) − 80  
IVB Pretreatment Died (18 mo) + (low titer) − 80  
IV 102 mo posttreatment CR (120 mo) + (low titer) +/− − 80 
IIA Pretreatment CR (25 mo) + (high titer) − 80  
IIIB Pretreatment CR (31 mo) + (high titer) − 80 
IVB Pretreatment PD (9 mo) + (high titer) − 80  
IVB 2 mo posttreatment CR (13 mo) + (high titer) − 80 
10 IB Pretreatment CR (13 mo) + (high titer) − 80  
11 IIA Pretreatment CR (8 mo) + (high titer) − ND 

Weak nuclear labeling was observed with all plasma samples at 1:100 dilution. This labeling disappeared on further dilution.

*

Plasma immunoreactivity with transfected cells: low titer, 1:100 dilution or less; high titer, 1:750 to 1:6750.

PD indicates progressive disease; CR, complete remission.

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