An 82-year-old woman with pulmonary aspergillosis developed dark-colored urine, markedly elevated creatine kinase (3,125 U/L) and myoglobin (3884.4 ng/mL), and delayed myocardial injury (high-sensitivity troponin I: 26301.6 pg/mL) on day 2 after intravenous micafungin (200 mg/day) initiation. This evidence concerns the gene MB and aspergillosis.