Facchinelli, Davide, and Livio Pagano. 2020. “Progressive Multifocal Leukoencephalopathy During Bispecific Antibody Therapy in Multiple Myeloma: From Immune Dysfunction to Early Recognition. Comment On: ‘Progressive Multifocal Leukoencephalopathy and BK Virus-Nephropathy With Bispecific Antibody Therapy in Multiple myeloma’”. Haematologica, September. Pavia, Italy. https://doi.org/10.3324/haematol.2026.301888.