To summarize, sex, age, hypertension, DM, malignant tumour, use of biologics, use of CNIs, use of methylprednisolone at 500 mg, use of methylprednisolone at 40 mg, total cumulative dose of methylprednisolone at 40 mg, use of oral glucocorticoids, and albumin and haemoglobin levels were independent predictors of the occurrence of PI in patients who were receiving immunosuppressant therapy. This evidence concerns the gene ALB and cancer.