Our patient was found to have pancytopenia and febrile neutropenia on the day of admission, a reported side effect of dasatinib [24]. The patient initially started to improve after stopping the medication and starting the antibiotics, but on day 8, he suddenly deteriorated and developed ARDS and became more neutropenic, which is most likely due to severe COVID-19 pneumonia as it improved after administrating COVID-19 pneumonia medications, applying BiPAP, and giving one dose of tocilizumab.