
Lori A. Leslie, MD, discusses the rationale for investigating the PI3K-delta inhibitor umbralisib in patients with relapsed or refractory marginal zone lymphoma in a multi-center, open-label phase II study. On trial, only patients with MZL were enrolled who had received at least 1 prior line of therapy. These patients received single-agent umbralisib once daily until progression or unacceptable toxicity.


























