{
  "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": "PNEUMONIA",
      "count": 243
    },
    {
      "term": "NEUTROPENIA",
      "count": 241
    },
    {
      "term": "OFF LABEL USE",
      "count": 220
    },
    {
      "term": "PYREXIA",
      "count": 199
    },
    {
      "term": "FEBRILE NEUTROPENIA",
      "count": 165
    },
    {
      "term": "DRUG INEFFECTIVE",
      "count": 160
    },
    {
      "term": "THROMBOCYTOPENIA",
      "count": 160
    },
    {
      "term": "DISEASE PROGRESSION",
      "count": 142
    },
    {
      "term": "ACUTE MYELOID LEUKAEMIA",
      "count": 132
    },
    {
      "term": "ANAEMIA",
      "count": 117
    },
    {
      "term": "PROGRESSIVE MULTIFOCAL LEUKOENCEPHALOPATHY",
      "count": 102
    },
    {
      "term": "MYELODYSPLASTIC SYNDROME",
      "count": 100
    },
    {
      "term": "INFUSION RELATED REACTION",
      "count": 97
    },
    {
      "term": "INFECTION",
      "count": 96
    },
    {
      "term": "DYSPNOEA",
      "count": 93
    },
    {
      "term": "SEPSIS",
      "count": 91
    },
    {
      "term": "MYOSITIS",
      "count": 86
    },
    {
      "term": "CHRONIC LYMPHOCYTIC LEUKAEMIA",
      "count": 77
    },
    {
      "term": "DEATH",
      "count": 76
    },
    {
      "term": "CARDIAC DISORDER",
      "count": 75
    },
    {
      "term": "NAUSEA",
      "count": 74
    },
    {
      "term": "SECOND PRIMARY MALIGNANCY",
      "count": 74
    },
    {
      "term": "MALIGNANT NEOPLASM PROGRESSION",
      "count": 73
    },
    {
      "term": "PANCYTOPENIA",
      "count": 71
    },
    {
      "term": "TREATMENT FAILURE",
      "count": 70
    },
    {
      "term": "DIARRHOEA",
      "count": 65
    },
    {
      "term": "INTENTIONAL PRODUCT USE ISSUE",
      "count": 65
    },
    {
      "term": "VOMITING",
      "count": 65
    },
    {
      "term": "FATIGUE",
      "count": 64
    },
    {
      "term": "HYPOGAMMAGLOBULINAEMIA",
      "count": 64
    },
    {
      "term": "HYPERSENSITIVITY",
      "count": 62
    },
    {
      "term": "NEUTROPENIC SEPSIS",
      "count": 60
    },
    {
      "term": "CHILLS",
      "count": 59
    },
    {
      "term": "TUMOUR LYSIS SYNDROME",
      "count": 59
    },
    {
      "term": "CARDIAC FAILURE CONGESTIVE",
      "count": 57
    },
    {
      "term": "PRODUCT USE IN UNAPPROVED INDICATION",
      "count": 57
    },
    {
      "term": "LYMPHOPENIA",
      "count": 56
    },
    {
      "term": "ASTHENIA",
      "count": 53
    },
    {
      "term": "HYPOTENSION",
      "count": 53
    },
    {
      "term": "HODGKIN^S DISEASE",
      "count": 51
    },
    {
      "term": "ATRIAL FIBRILLATION",
      "count": 50
    },
    {
      "term": "SECONDARY IMMUNODEFICIENCY",
      "count": 50
    },
    {
      "term": "LYMPHADENOPATHY",
      "count": 49
    },
    {
      "term": "MALAISE",
      "count": 49
    },
    {
      "term": "MICROSPORIDIA INFECTION",
      "count": 48
    },
    {
      "term": "PLATELET COUNT DECREASED",
      "count": 48
    },
    {
      "term": "RESPIRATORY TRACT INFECTION",
      "count": 48
    },
    {
      "term": "TOXICITY TO VARIOUS AGENTS",
      "count": 46
    },
    {
      "term": "MUSCULAR WEAKNESS",
      "count": 44
    },
    {
      "term": "CYTOPENIA",
      "count": 43
    },
    {
      "term": "LUNG INFECTION",
      "count": 43
    },
    {
      "term": "DIFFUSE LARGE B-CELL LYMPHOMA",
      "count": 42
    },
    {
      "term": "HAEMOGLOBIN DECREASED",
      "count": 42
    },
    {
      "term": "URINARY TRACT INFECTION",
      "count": 42
    },
    {
      "term": "MYALGIA",
      "count": 41
    },
    {
      "term": "GENERAL PHYSICAL HEALTH DETERIORATION",
      "count": 40
    },
    {
      "term": "PLEURAL EFFUSION",
      "count": 40
    },
    {
      "term": "WHITE BLOOD CELL COUNT DECREASED",
      "count": 40
    },
    {
      "term": "LEUKOPENIA",
      "count": 38
    },
    {
      "term": "CONDITION AGGRAVATED",
      "count": 36
    },
    {
      "term": "DEVICE RELATED INFECTION",
      "count": 36
    },
    {
      "term": "TREMOR",
      "count": 36
    },
    {
      "term": "PSEUDOMONAS INFECTION",
      "count": 35
    },
    {
      "term": "CHEST PAIN",
      "count": 34
    },
    {
      "term": "CYTOMEGALOVIRUS INFECTION",
      "count": 34
    },
    {
      "term": "HERPES ZOSTER",
      "count": 34
    },
    {
      "term": "POLYMYOSITIS",
      "count": 34
    },
    {
      "term": "WEIGHT DECREASED",
      "count": 33
    },
    {
      "term": "BONE MARROW FAILURE",
      "count": 32
    },
    {
      "term": "COUGH",
      "count": 32
    },
    {
      "term": "DIZZINESS",
      "count": 32
    },
    {
      "term": "RESPIRATORY FAILURE",
      "count": 32
    },
    {
      "term": "COVID-19",
      "count": 31
    },
    {
      "term": "BLOOD LACTATE DEHYDROGENASE INCREASED",
      "count": 30
    },
    {
      "term": "CONFUSIONAL STATE",
      "count": 30
    },
    {
      "term": "HEADACHE",
      "count": 30
    },
    {
      "term": "NEOPLASM PROGRESSION",
      "count": 30
    },
    {
      "term": "ARTHRALGIA",
      "count": 29
    },
    {
      "term": "NON-HODGKIN^S LYMPHOMA RECURRENT",
      "count": 29
    },
    {
      "term": "RASH",
      "count": 29
    },
    {
      "term": "CAMPYLOBACTER INFECTION",
      "count": 28
    },
    {
      "term": "CHRONIC LYMPHOCYTIC LEUKAEMIA RECURRENT",
      "count": 28
    },
    {
      "term": "RENAL FAILURE",
      "count": 28
    },
    {
      "term": "RICHTER^S SYNDROME",
      "count": 28
    },
    {
      "term": "CONSTIPATION",
      "count": 27
    },
    {
      "term": "HYPERTENSION",
      "count": 27
    },
    {
      "term": "ACUTE KIDNEY INJURY",
      "count": 26
    },
    {
      "term": "ALANINE AMINOTRANSFERASE INCREASED",
      "count": 26
    },
    {
      "term": "BRONCHOPULMONARY ASPERGILLOSIS",
      "count": 26
    },
    {
      "term": "CEREBROVASCULAR ACCIDENT",
      "count": 26
    },
    {
      "term": "SQUAMOUS CELL CARCINOMA",
      "count": 26
    },
    {
      "term": "TACHYCARDIA",
      "count": 26
    },
    {
      "term": "CEREBRAL ASPERGILLOSIS",
      "count": 25
    },
    {
      "term": "MALIGNANT TRANSFORMATION",
      "count": 25
    },
    {
      "term": "PULMONARY EMBOLISM",
      "count": 24
    },
    {
      "term": "SEPTIC SHOCK",
      "count": 24
    },
    {
      "term": "ASPARTATE AMINOTRANSFERASE INCREASED",
      "count": 23
    },
    {
      "term": "PAIN",
      "count": 23
    },
    {
      "term": "HAEMORRHAGE",
      "count": 22
    },
    {
      "term": "JC VIRUS INFECTION",
      "count": 22
    }
  ]
}