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Progressive multifocal leukoencephalopathy (PML) is a devastating neurological disease observed nearly exclusively in immunocompromised patients. Recently, the introduction of monoclonal antibodies significantly inhibiting the immune system such as rituximab has led to an increase in PML cases. Although rituximab-based immunochemotherapy remains the standard of treatment for chronic lymphocytic leukemia (CLL), the importance of Bruton's tyrosine kinase inhibitors such as ibrutinib is steadily increasing. However, long-term experiences regarding possible side effects of these new substances are rare. Here, we report the development of eventually fatal PML possibly associated with ibrutinib therapy for CLL after multiple prior treatment lines, including rituximab. To the best of our knowledge, this is the first study to report such findings. Since the last course of rituximab was applied over 3 years ago, it is conceivable that the strong B cell inhibition by ibrutinib led to PML. With increased awareness of this potential side effect, further clinical studies are certainly warranted to evaluate this possible association. [ABSTRACT FROM AUTHOR]

Compromised quality of life (QoL) is a frequent consequence of treatment-refractory chronic graft-versus-host disease (cGvHD). Here, we report on the assessment of QoL in a subgroup of 22 patients with a median age of 54 (17-70) yr receiving an everolimus-based salvage therapy at a single center for their steroid-refractory cGvHD. Five patients suffered from mild, 13 from moderate, and four from severe cGvHD according to NIH consensus criteria when everolimus was introduced. Median treatment duration was 390 d ranging from 86 to 814 d. We performed actual and retrospective assessments of QoL (EuroQol EQ-5D questionnaire) and degree of bother experienced by cGvHD symptoms (Lee cGvHD Symptom Scale). Seventeen of 22 patients showed an improved QoL according to the EQ-5D visual analog scale (37.5% vs. 70.0%; p < 0.001), and a decline in the median Lee cGvHD Symptom Scale was noted in 20 of 22 patients (28 vs. 17; p < 0.001). Furthermore, an improvement was noted in each of the five dimensions of the EQ-5D descriptive system. These data even when limited by their retrospective nature suggest that beyond physical responses everolimus may have contributed to the rebuilding of patients' QoL. [ABSTRACT FROM AUTHOR]