Overview of definitions and therapeutic options

Clinical remissionBiological (ADAMTS13) remission
Definition  
 Clinical response Partial: ADAMTS13 activity ≥20% to <LLN 
  • Platelet count ≥150 × 109/L Complete: ADAMTS13 activity ≥LLN 
  • LDH <1.5 times upper limit of normal  
  • No new or progressive ischemic organ injury with either (1) no temporizing agents for 30 days, or (2) ADAMTS13 remission  
Therapeutics  
 Temporizing agents for clinical response Disease-modifying agents for biological remission 
  • Plasma exchange  • Plasma exchange 
  • Caplacizumab  • Steroids 
  • Other anti-VWF therapeutics*  • Rituximab 
  • Recombinant ADAMTS13*  • Other immunomodulating agents 
Clinical remissionBiological (ADAMTS13) remission
Definition  
 Clinical response Partial: ADAMTS13 activity ≥20% to <LLN 
  • Platelet count ≥150 × 109/L Complete: ADAMTS13 activity ≥LLN 
  • LDH <1.5 times upper limit of normal  
  • No new or progressive ischemic organ injury with either (1) no temporizing agents for 30 days, or (2) ADAMTS13 remission  
Therapeutics  
 Temporizing agents for clinical response Disease-modifying agents for biological remission 
  • Plasma exchange  • Plasma exchange 
  • Caplacizumab  • Steroids 
  • Other anti-VWF therapeutics*  • Rituximab 
  • Recombinant ADAMTS13*  • Other immunomodulating agents 

LDH, lactate dehydrogenase; LLN, lower limit of normal.

*

In development.

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