Immune Checkpoint Inhibitor Toxicity (irAE) Management
Immune Checkpoint Inhibitor Toxicity (irAE) Management: Suspected Immune-Related Adverse Event → Recognize Common irAEs → Grade Toxicity (CTCAE v5.0) → ...
Interactive Decision Tree
Algorithm Steps
- ▶Start
Suspected Immune-Related Adverse Event
New symptoms in patient on ICI therapy
- ●Action
Recognize Common irAEs
Timing varies by organ system
- COMMON irAEs by organ:
- • Skin: Rash, pruritus (most common, early)
- • GI: Diarrhea, colitis (esp. anti-CTLA-4)
- • Hepatic: Elevated transaminases
- • Pulmonary: Pneumonitis, cough, dyspnea
- • Endocrine: Thyroid dysfunction, hypophysitis
- • Renal: Nephritis
- • Neurologic: Neuropathy, encephalitis, myasthenia
- • Cardiac: Myocarditis (rare but serious)
- ◆Decision
Grade Toxicity (CTCAE v5.0)
Severity guides management
- Grade 1: Mild, asymptomatic or mild symptoms
- Grade 2: Moderate, limiting ADLs
- Grade 3: Severe, limiting self-care ADLs
- Grade 4: Life-threatening
- Grade 5: Death
- ●Action
Grade 1 Management
Continue ICI with monitoring
- Most Grade 1: Continue ICI therapy
- Close monitoring
- Symptomatic management
- EXCEPTIONS - Hold ICI even Grade 1:
- • Cardiac (myocarditis)
- • Neurologic (certain)
- • Hematologic
- ●Action
Organ-Specific Considerations
Key differences by system
- MYOCARDITIS: Troponin, ECG, echo - cardiology stat
- PNEUMONITIS: CT chest, bronchoscopy if uncertain
- COLITIS: Colonoscopy if severe/refractory
- HEPATITIS: Rule out viral hepatitis
- HYPOPHYSITIS: AM cortisol, pituitary MRI
- THYROID: TSH, free T4 - may need replacement
- ADRENAL: Morning cortisol, stress dose steroids
- ◆Decision
Rechallenge Decision
Consider resuming ICI?
- GENERALLY SAFE TO RECHALLENGE:
- • Grade 1-2 that resolved with steroids
- • Endocrinopathies (on replacement)
- • Dermatologic (most)
- GENERALLY AVOID RECHALLENGE:
- • Grade 4 toxicity (except endocrine)
- • Myocarditis (any grade)
- • Severe pneumonitis
- • Neurologic: Guillain-Barré, myasthenia
- CAUTION: Anti-CTLA-4 has higher irAE recurrence
- ●Action
Resume ICI Therapy
With close monitoring
- Resume when toxicity ≤Grade 1
- Steroids tapered to ≤10mg prednisone
- Close monitoring for recurrence
- Consider single-agent anti-PD-1 if combo caused toxicity
- ~50% may experience recurrence of same irAE
- ✓Outcome
irAE Managed
Continue appropriate cancer care
- ●Action
Permanently Discontinue ICI
Alternative cancer therapy
- Consider alternative cancer treatments
- Long-term monitoring for chronic irAEs
- Hormone replacement if endocrinopathy
- Multidisciplinary follow-up
- ●Action
Grade 2 Management
Hold ICI, consider steroids
- HOLD ICI therapy
- May initiate corticosteroids:
- • Prednisone 0.5-1 mg/kg/day
- • Or equivalent methylprednisolone
- Subspecialty consultation as needed
- Resume ICI when ≤Grade 1 AND steroid ≤10mg/day
- If no improvement in 2-3 days: escalate to Grade 3 treatment
- ◆Decision
Steroid-Refractory?
No improvement after 48-72h of high-dose steroids
- ●Action
Additional Immunosuppression
Based on organ system
- COLITIS:
- • Infliximab 5 mg/kg (if no perforation)
- • Vedolizumab alternative
- HEPATITIS:
- • Mycophenolate mofetil
- • Avoid infliximab (hepatotoxic)
- PNEUMONITIS:
- • Infliximab or mycophenolate
- MYOCARDITIS:
- • Add infliximab, IVIG, or plasmapheresis
- • Cardiology involvement critical
- ●Action
Steroid Taper
Once improved to Grade ≤1
- Taper over at least 4-6 weeks
- Faster tapers associated with flares
- Monitor for recurrence during taper
- Some organs need longer taper (pneumonitis, hepatitis)
- PPI and PCP prophylaxis during high-dose steroids
- ●Action
Grade 3-4 Management
Hold ICI, high-dose steroids
- HOLD ICI therapy (may be permanent)
- HIGH-DOSE STEROIDS:
- • Prednisone 1-2 mg/kg/day OR
- • Methylprednisolone 1-2 mg/kg/day IV
- Hospitalization often required for Grade 3-4
- Subspecialty consultation mandatory
- Consider anti-CTLA-4 discontinuation after severe irAE
Guideline Source
ASCO Guideline: Management of Immune-Related Adverse Events
Clinical Safety Information
Clinical Decision Support — Not a Substitute for Clinical Judgment
Individual patient factors may require deviation from these recommendations.
Known Limitations
- Organ-specific management varies - consult subspecialty
- Some rare irAEs not covered in detail
- Steroid dosing may vary by severity and organ
- Rechallenge decisions are complex and individualized
Applicable Regions
Next steps
Finish the workflow by opening the most relevant calculator, then convert the session into a live account when you are ready.
Calculator
Absolute Neutrophil Count (ANC)
Absolute neutrophil count from CBC for neutropenia grading
Compare
AttendMe.ai vs OpenEvidence
See how this pathway workflow compares against OpenEvidence.
Commercial
Start free
Run the pathway in a live AttendMe account with citations and tracked usage.
Related Resources
Frequently Asked Questions
What is the Immune Checkpoint Inhibitor Toxicity (irAE) Management?
The Immune Checkpoint Inhibitor Toxicity (irAE) Management is a management clinical algorithm for Hematology & Oncology. It provides a structured decision tree to guide clinical decision-making, based on ASCO Guideline: Management of Immune-Related Adverse Events.
What guideline is the Immune Checkpoint Inhibitor Toxicity (irAE) Management based on?
This algorithm is based on ASCO Guideline: Management of Immune-Related Adverse Events (DOI: 10.1200/JCO.21.01440).
What are the limitations of the Immune Checkpoint Inhibitor Toxicity (irAE) Management?
Known limitations include: Organ-specific management varies - consult subspecialty; Some rare irAEs not covered in detail; Steroid dosing may vary by severity and organ; Rechallenge decisions are complex and individualized. Individual patient factors may require deviation from these recommendations.
Get AI-Powered Analysis Alongside This Algorithm
In AttendMe.ai, the Immune Checkpoint Inhibitor Toxicity (irAE) Management appears automatically when your clinical question matches — alongside evidence from 3M+ peer-reviewed articles.
Try AttendMe Free