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PGX CDSPROCESS OUTCOMESTim Herr
Northwestern University
Goals
•Primary:• Determine how PGx CDS alerts affect clinical action
• Intermediate:• Inventory of alert scenarios across sites• Understand rates at which alerts are firing• Determine how physicians interact with alerts
Data Collection• Data submission templates
Alert Scenarios
Example Alert Scenarios: Warfarin• Marshfield: WARFARIN_2_2_AA
• “Genetic testing for this individual (CYP2C9*2/*2 and VKORC1: AA) indicates an initial Warfarin dose of 0.5 mg - 2 mg may be considered.”
• Mayo: warfarin/CYP2C9/VKORC1_dose_calculator• “An alert/calculator is generated for new warfarin orders if patient has
CYP2C9 and VKORC1 results in the EMR. The alert/calculator displays the variables used and the calculated dose.”
• Northwestern: Warfarin (Not on Medication, Prescribing) • “Dosing calculator should be used to determine initial warfarin dose.
Enter clinical data into dosing calculator for all patients. Addition of genetic information (see lab results) suggested for non-African Americans.”
Example Alert Scenarios: Clopidogrel• Mt. Sinai: Clopidogrel-CYP2C19 IM
• “Change to either Prasugrel or Ticagrelor”
• Marshfield: CLOPIDOGREL_2_17• “Consider alternative antiplatelet therapy.”
• Northwestern: Clopidogrel Intermediate Metabolizer (Prescribing)• “Consider alternative - medication may be ineffective if prescribed.”
Provider Information
Alert Instances
Alert Response vs. Clinical Response
Accept
Override
Ignore
Followed
Not Followed
No Action
Alert Response Clinical Response
Alerts Submitted
Organization Number of Alerts
Boston Children’s 0 (No production alerts fired)
Cincinnati Children’s 22
Marshfield Clinic 12
Mayo Clinic 5
Mt. Sinai 2
Northwestern 36 (5 active; 31 passive)
Vanderbilt 143
Total 220
Alerts by Drug-Gene Interaction
Alert Responses
Clinical Responses
Responses by DGI
DGI # Alerts Accept Followclopidogrel 171 32 10simvastatin 19 15 12warfarin 7 0 1
An Interesting Story…
• Alert: 12294605• SIMVASTATIN METABOLISM-INTERMEDIATE ACTIVITY (NOT ON MED)
• Patient had been on simvastatin 40mg for several years but Rx was expired or discontinued
• Physician sees alert at order entry• Physician opens SmartSet (informational materials)
• Physician orders simvastatin 40 mg, anyway
An Interesting Story…
• Approx. three weeks later...• Alert: 12501097• SIMVASTATIN METABOLISM-INTERMEDIATE ACTIVITY
• Physician #2 sees alert in General BPAs section
• Physician #2 opens SmartSet (informational materials)
• Physician #2 orders atorvastatin 20mg
Questions?
• Acknowledgements:• The PGx Process Outcomes Workgroup• Especially Luke Rasmussen and Josh Peterson