Table 1.

Adverse reactions of commonly used therapies in refractory chronic GVHD14 

AgentPotential major adverse effects (with major study citations)Common (>10%) generally less severe adverse effects
Bortezomib Peripheral neuropathy, thrombocytopenia, malignancy relapse106  Herpes virus reactivation 
ECP Vascular access complications107  Thrombocytopenia 
FAM New FDA MedWatch warning; warning only applies to azithromycin use in prophylactic (not treatment) setting108,109   
Ibrutinib (Imbruvica R) Pneumonia,29  impaired platelet function Fatigue, muscle pain, peripheral edema 
Imatinib  Peripheral edema 
Interleukin-2 Injection site induration, infections36  Constitutional flu-like symptoms 
MMF (Cellcept) Viral reactivation, hypertension, pneumonia, posttransplantation lymphoproliferative disease110  GI toxicity, neutropenia, leukopenia 
Pamolidomide Tremor, muscle cramps, peripheral neuropathy111  Skin rash 
Rituximab (Rituxan R) Infection, late neutropenia38,39,112  B lymphopenia 
Ruxolitinib (Jakafi R) Viral reactivation/infection, bacterial infections35  Cytopenias 
Sirolimus (Rapamune) TAM when used in combination with calcineurin inhibitors, renal insufficiency,113  proteinuria Peripheral edema, hyperlipidemia, cytopenias 
AgentPotential major adverse effects (with major study citations)Common (>10%) generally less severe adverse effects
Bortezomib Peripheral neuropathy, thrombocytopenia, malignancy relapse106  Herpes virus reactivation 
ECP Vascular access complications107  Thrombocytopenia 
FAM New FDA MedWatch warning; warning only applies to azithromycin use in prophylactic (not treatment) setting108,109   
Ibrutinib (Imbruvica R) Pneumonia,29  impaired platelet function Fatigue, muscle pain, peripheral edema 
Imatinib  Peripheral edema 
Interleukin-2 Injection site induration, infections36  Constitutional flu-like symptoms 
MMF (Cellcept) Viral reactivation, hypertension, pneumonia, posttransplantation lymphoproliferative disease110  GI toxicity, neutropenia, leukopenia 
Pamolidomide Tremor, muscle cramps, peripheral neuropathy111  Skin rash 
Rituximab (Rituxan R) Infection, late neutropenia38,39,112  B lymphopenia 
Ruxolitinib (Jakafi R) Viral reactivation/infection, bacterial infections35  Cytopenias 
Sirolimus (Rapamune) TAM when used in combination with calcineurin inhibitors, renal insufficiency,113  proteinuria Peripheral edema, hyperlipidemia, cytopenias 

This list of agents represents a fraction of agents being actively evaluated. Preferred use of any agent still requires validation via larger clinical trials.

ECP, extracorporeal photopheresis; FAM, fluticasone, azithromycin, and montelukast; FDA, US Food and Drug Administration; GI, gastrointestinal; MMF, mycophenolate mofetil; TAM, transplantation-associated microangiopathy.

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