“…Increased susceptibility to fungal infection has been reported during ibrutinib treatment [ 173 , 174 , 175 ]. However, the incidence of severe invasive fungal infections is relatively low, ranging from 1.2% to 3% of treated patients [ 176 , 177 , 178 , 179 ], and mainly occurs in heavily pretreated patients or those receiving concurrent steroid treatment [ 173 , 177 , 178 ]. Furthermore, treatment with single-agent ibrutinib can increase susceptibility to PJP, even in TN patients [ 180 , 181 ].…”