Zinaida Perić, MD, PhD, University Hospital Centre Zagreb, School of Medicine, Zagreb, Croatia, discusses the application of machine learning to chronic graft-versus-host disease (GvHD) to identify phenotypic groups based on the subcomponents of the National Institutes of Health Consensus Criteria. This interview was recorded via an online conference call with The Video Journal of Hematological Oncology (VJHemOnc).