Blood Advances is a semimonthly medical journal published by the American Society of Hematology. It is the first journal to join the Blood family in 70 years and is a peer-reviewed, online only, open access journal. Under the direction of founding editor-in-chief Robert Negrin, MD, Stanford University Medical Center, Stanford, CA, the inaugural issue debuted on November 29, 2016.Blood Advances provides an international forum for the publication of original articles describing basic laboratory, translational, and clinical investigations in hematology. The journal covers all aspects of hematology, including disorders of leukocytes, both benign and malignant, erythrocytes, platelets, hemostatic mechanisms, vascular biology, immunology, and hematologic oncology. All articles undergo a rigorous peer-review and are selected on the basis of the originality of the findings, the superior quality of the work described, and the clarity of presentation.