{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-04-28"
  },
  "results": [
    {
      "term": "OFF LABEL USE",
      "count": 1098
    },
    {
      "term": "FEBRILE NEUTROPENIA",
      "count": 767
    },
    {
      "term": "MUCOSAL INFLAMMATION",
      "count": 767
    },
    {
      "term": "PRODUCT USE IN UNAPPROVED INDICATION",
      "count": 589
    },
    {
      "term": "CYTOMEGALOVIRUS INFECTION",
      "count": 525
    },
    {
      "term": "DRUG INEFFECTIVE",
      "count": 518
    },
    {
      "term": "PYREXIA",
      "count": 494
    },
    {
      "term": "ACUTE GRAFT VERSUS HOST DISEASE",
      "count": 444
    },
    {
      "term": "ACUTE GRAFT VERSUS HOST DISEASE IN SKIN",
      "count": 429
    },
    {
      "term": "INFECTION",
      "count": 418
    },
    {
      "term": "CYTOMEGALOVIRUS INFECTION REACTIVATION",
      "count": 396
    },
    {
      "term": "NEUTROPENIA",
      "count": 391
    },
    {
      "term": "SEPSIS",
      "count": 390
    },
    {
      "term": "VENOOCCLUSIVE LIVER DISEASE",
      "count": 387
    },
    {
      "term": "THROMBOCYTOPENIA",
      "count": 358
    },
    {
      "term": "GRAFT VERSUS HOST DISEASE",
      "count": 305
    },
    {
      "term": "ADENOVIRUS INFECTION",
      "count": 301
    },
    {
      "term": "HUMAN HERPESVIRUS 6 INFECTION",
      "count": 298
    },
    {
      "term": "HAEMATOTOXICITY",
      "count": 288
    },
    {
      "term": "DIARRHOEA",
      "count": 270
    },
    {
      "term": "MULTIPLE ORGAN DYSFUNCTION SYNDROME",
      "count": 267
    },
    {
      "term": "THROMBOTIC MICROANGIOPATHY",
      "count": 264
    },
    {
      "term": "CHRONIC GRAFT VERSUS HOST DISEASE",
      "count": 261
    },
    {
      "term": "ACUTE GRAFT VERSUS HOST DISEASE IN INTESTINE",
      "count": 244
    },
    {
      "term": "GRAFT VERSUS HOST DISEASE IN SKIN",
      "count": 242
    },
    {
      "term": "PNEUMONIA",
      "count": 232
    },
    {
      "term": "RESPIRATORY FAILURE",
      "count": 230
    },
    {
      "term": "GRAFT VERSUS HOST DISEASE IN GASTROINTESTINAL TRACT",
      "count": 228
    },
    {
      "term": "DISEASE PROGRESSION",
      "count": 195
    },
    {
      "term": "EPSTEIN-BARR VIRUS INFECTION",
      "count": 192
    },
    {
      "term": "ACUTE KIDNEY INJURY",
      "count": 189
    },
    {
      "term": "BK VIRUS INFECTION",
      "count": 179
    },
    {
      "term": "ANAEMIA",
      "count": 177
    },
    {
      "term": "VENOOCCLUSIVE DISEASE",
      "count": 170
    },
    {
      "term": "SEPTIC SHOCK",
      "count": 165
    },
    {
      "term": "DEATH",
      "count": 163
    },
    {
      "term": "CYTOMEGALOVIRUS VIRAEMIA",
      "count": 158
    },
    {
      "term": "PANCYTOPENIA",
      "count": 158
    },
    {
      "term": "HYPERTENSION",
      "count": 153
    },
    {
      "term": "VOMITING",
      "count": 153
    },
    {
      "term": "POSTERIOR REVERSIBLE ENCEPHALOPATHY SYNDROME",
      "count": 139
    },
    {
      "term": "VIRAL HAEMORRHAGIC CYSTITIS",
      "count": 138
    },
    {
      "term": "CYSTITIS HAEMORRHAGIC",
      "count": 135
    },
    {
      "term": "INAPPROPRIATE ANTIDIURETIC HORMONE SECRETION",
      "count": 131
    },
    {
      "term": "RENAL FAILURE",
      "count": 130
    },
    {
      "term": "NAUSEA",
      "count": 121
    },
    {
      "term": "ACUTE RESPIRATORY DISTRESS SYNDROME",
      "count": 116
    },
    {
      "term": "BONE MARROW FAILURE",
      "count": 115
    },
    {
      "term": "STOMATITIS",
      "count": 114
    },
    {
      "term": "NEUROTOXICITY",
      "count": 112
    },
    {
      "term": "ENGRAFTMENT SYNDROME",
      "count": 105
    },
    {
      "term": "HEPATOTOXICITY",
      "count": 103
    },
    {
      "term": "TOXICITY TO VARIOUS AGENTS",
      "count": 103
    },
    {
      "term": "PRODUCT USE ISSUE",
      "count": 102
    },
    {
      "term": "COVID-19",
      "count": 101
    },
    {
      "term": "BACTERAEMIA",
      "count": 100
    },
    {
      "term": "INTENTIONAL PRODUCT USE ISSUE",
      "count": 99
    },
    {
      "term": "STAPHYLOCOCCAL INFECTION",
      "count": 97
    },
    {
      "term": "PERICARDIAL EFFUSION",
      "count": 96
    },
    {
      "term": "CHRONIC GRAFT VERSUS HOST DISEASE IN SKIN",
      "count": 95
    },
    {
      "term": "SEIZURE",
      "count": 95
    },
    {
      "term": "ASCITES",
      "count": 93
    },
    {
      "term": "TRANSPLANT FAILURE",
      "count": 92
    },
    {
      "term": "BRONCHOPULMONARY ASPERGILLOSIS",
      "count": 90
    },
    {
      "term": "CLOSTRIDIUM DIFFICILE COLITIS",
      "count": 90
    },
    {
      "term": "DISEASE RECURRENCE",
      "count": 90
    },
    {
      "term": "HYPOTENSION",
      "count": 90
    },
    {
      "term": "ABDOMINAL PAIN",
      "count": 89
    },
    {
      "term": "POST TRANSPLANT LYMPHOPROLIFERATIVE DISORDER",
      "count": 89
    },
    {
      "term": "HEPATIC FAILURE",
      "count": 88
    },
    {
      "term": "PLEURAL EFFUSION",
      "count": 88
    },
    {
      "term": "VIRAEMIA",
      "count": 88
    },
    {
      "term": "ENCEPHALITIS VIRAL",
      "count": 86
    },
    {
      "term": "ACUTE LYMPHOCYTIC LEUKAEMIA RECURRENT",
      "count": 85
    },
    {
      "term": "PULMONARY ARTERIAL HYPERTENSION",
      "count": 84
    },
    {
      "term": "FUNGAL INFECTION",
      "count": 82
    },
    {
      "term": "BACTERIAL SEPSIS",
      "count": 81
    },
    {
      "term": "RESPIRATORY DISTRESS",
      "count": 81
    },
    {
      "term": "APLASTIC ANAEMIA",
      "count": 80
    },
    {
      "term": "CYTOKINE RELEASE SYNDROME",
      "count": 77
    },
    {
      "term": "AUTOIMMUNE HAEMOLYTIC ANAEMIA",
      "count": 75
    },
    {
      "term": "DRUG INEFFECTIVE FOR UNAPPROVED INDICATION",
      "count": 75
    },
    {
      "term": "RASH",
      "count": 75
    },
    {
      "term": "HYPOGAMMAGLOBULINAEMIA",
      "count": 74
    },
    {
      "term": "MYELOSUPPRESSION",
      "count": 73
    },
    {
      "term": "RENAL IMPAIRMENT",
      "count": 73
    },
    {
      "term": "ACUTE GRAFT VERSUS HOST DISEASE IN LIVER",
      "count": 71
    },
    {
      "term": "EPSTEIN-BARR VIRUS INFECTION REACTIVATION",
      "count": 71
    },
    {
      "term": "MALIGNANT NEOPLASM PROGRESSION",
      "count": 71
    },
    {
      "term": "PNEUMONIA CYTOMEGALOVIRAL",
      "count": 69
    },
    {
      "term": "CARDIAC FAILURE",
      "count": 68
    },
    {
      "term": "NEPHROPATHY TOXIC",
      "count": 67
    },
    {
      "term": "PNEUMONITIS",
      "count": 67
    },
    {
      "term": "PSEUDOMONAS INFECTION",
      "count": 67
    },
    {
      "term": "CYTOPENIA",
      "count": 66
    },
    {
      "term": "GRAFT VERSUS HOST DISEASE IN LIVER",
      "count": 65
    },
    {
      "term": "HERPES SIMPLEX",
      "count": 65
    },
    {
      "term": "PNEUMOCYSTIS JIROVECII PNEUMONIA",
      "count": 65
    },
    {
      "term": "GASTROINTESTINAL TOXICITY",
      "count": 62
    },
    {
      "term": "VIRAL INFECTION",
      "count": 62
    }
  ]
}