Valentín Ortiz-Maldonado, MD, Hospital Clínic de Barcelona, Barcelona, Spain, discusses sinusoidal obstruction syndrome in patients with relapsed/refractory (R/R) B-cell acute lymphoblastic leukemia (ALL) treated with ARI-0001 cells (varnimcabtagene autoleucel). This interview was recorded via an online conference call with The Video Journal of Hematological Oncology (VJHemOnc).