Table 3.

Risk-assessment tools for venous thromboembolism

IMPEDE –VTE21 SAVED22 PRISM23 
Population VACCR, n = 4446—validated in SEER SEER, n = 2397
Goal: to define IMiD-related risk of thrombosis—validated in VHA database 
Consecutive patients Cleveland Clinic, n = 783—validated in CUIMC Multiple Myeloma and
Amyloidosis Program 
Risk factors    
VTE history +5 +3 +8 
Dexamethasone    
 High dose (>160 mg/mo) +4 +2  
 Low dose +2 +1  
IMiDs +4  +2 
Fracture pelvic/hip/femur +4   
Use of erythropoietin +1   
Use of tunneled line/CVC +2   
BMI ≥25 +1   
Asian/Pacific Islander −3   
Asian race  −3  
Black race   +1 
Age ≥80 y  +1  
Surgery within 90 d  +2 +5 
Existing use of anticoagulant (LMWH or oral anticoagulants) or antiplatelet aggregation drugs (aspirin), either therapeutically or prophylactically −4 (−3 if prophylactic)   
Abnormal cytogenetics   +2 
Risk stratification Low ≤3 Low ≤1 Low 0 
Intermediate 4-7  Intermediate 1-6 
High ≥8 High ≥2 High ≥7 
Cumulative incidence of Vte in the first 6 (IMPEDE-VTE and SAVED) or 12 mo (SAVED and PRISM) Low 3.3% Low 7%/10% Low 6.4% 
Intermediate 8.3%  Intermediate 10.7% 
High 15.2% High 12%/19% High 23.8% 
IMPEDE –VTE21 SAVED22 PRISM23 
Population VACCR, n = 4446—validated in SEER SEER, n = 2397
Goal: to define IMiD-related risk of thrombosis—validated in VHA database 
Consecutive patients Cleveland Clinic, n = 783—validated in CUIMC Multiple Myeloma and
Amyloidosis Program 
Risk factors    
VTE history +5 +3 +8 
Dexamethasone    
 High dose (>160 mg/mo) +4 +2  
 Low dose +2 +1  
IMiDs +4  +2 
Fracture pelvic/hip/femur +4   
Use of erythropoietin +1   
Use of tunneled line/CVC +2   
BMI ≥25 +1   
Asian/Pacific Islander −3   
Asian race  −3  
Black race   +1 
Age ≥80 y  +1  
Surgery within 90 d  +2 +5 
Existing use of anticoagulant (LMWH or oral anticoagulants) or antiplatelet aggregation drugs (aspirin), either therapeutically or prophylactically −4 (−3 if prophylactic)   
Abnormal cytogenetics   +2 
Risk stratification Low ≤3 Low ≤1 Low 0 
Intermediate 4-7  Intermediate 1-6 
High ≥8 High ≥2 High ≥7 
Cumulative incidence of Vte in the first 6 (IMPEDE-VTE and SAVED) or 12 mo (SAVED and PRISM) Low 3.3% Low 7%/10% Low 6.4% 
Intermediate 8.3%  Intermediate 10.7% 
High 15.2% High 12%/19% High 23.8% 

BMI, body mass index; CUIMC, Columbia University Irving Medical Center; CVC, central venous catheter; SEER, Surveillance, Epidemiology, End Results; VACCR, Veterans Administration Central Cancer Registry; VHA, Veterans Health Administration.

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