Table 1.

Characteristics of 6 patients with inhibitors against FVIII treated with 2-chlorodeoxyadenosine

PtAge/SexUnderlying conditionTiter
at treatment, BU/mL
BleedingTime to
50% increase in FVIII, d
Time to
50% decline in inhibitor, d
Time to nadir
inhibitor, d
Nadir inhibitor titer (BU/mL)Maximum FVIII, %
HumanPorcineHumanPorcine
72/M Chronic lymphocytic leukemia 26 Soft tissues 95 68 117 62 
63/M None 162 16 Soft tissues, hematuria 265 124 280 54 
67/F Scleroderma 24 Postoperative 105 79 145 82 
59/F Systemic lupus erythematosus 36 Skin, hemarthrosis 128 84 129 87  
78/M Colon cancer resected 2 years prior to inhibitor 18 10 Soft tissues, intra-abdominal 86 54 102 64 
68/M None 54 14 Soft tissues, epistaxis 94 87 218 76 
PtAge/SexUnderlying conditionTiter
at treatment, BU/mL
BleedingTime to
50% increase in FVIII, d
Time to
50% decline in inhibitor, d
Time to nadir
inhibitor, d
Nadir inhibitor titer (BU/mL)Maximum FVIII, %
HumanPorcineHumanPorcine
72/M Chronic lymphocytic leukemia 26 Soft tissues 95 68 117 62 
63/M None 162 16 Soft tissues, hematuria 265 124 280 54 
67/F Scleroderma 24 Postoperative 105 79 145 82 
59/F Systemic lupus erythematosus 36 Skin, hemarthrosis 128 84 129 87  
78/M Colon cancer resected 2 years prior to inhibitor 18 10 Soft tissues, intra-abdominal 86 54 102 64 
68/M None 54 14 Soft tissues, epistaxis 94 87 218 76 

Pt indicates patient; FVIII, factor VIII.

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