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Introduction to a review series on emerging immunotherapies for hematologic diseases.

Immune therapies are fast becoming paradigm-changing treatment options for patients with hematologic cancers. The field has grown exponentially as it expands to nonmalignant blood diseases. This Perspective article introduces the review series describing some of the latest advances in this field and highlighting some of the current obstacles and new opportunities for the future. Specifically, the series provides in-depth discussion on a selection of emerging immunotherapies now available to patients for hematologic diseases, including cancer vaccines, chimeric antigen receptor T cells, and immunotherapies to regulate inflammation in nonmalignant blood disorders.