Immune Thrombocytopenia in Children Less Than 1 Year of Age: A Single-institution 10-year ExperienceLo, Clara MD*; Wong, Wendy MD*; Glader, Bertil MD, PhD*,†; Jeng, Michael MD*Journal of Pediatric Hematology/Oncology: July 2013 - Volume 35 - Issue 5 - p 406–408 doi: 10.1097/MPH.0b013e3182580ab4 Clinical and Laboratory Observations Abstract Author Information Abstract Immune thrombocytopenia (ITP) in children less than one year of age is less well characterized compared to ITP in toddlers and school-age children. We performed a 10-year retrospective review of ITP patients in this age-cohort at our institution. Diagnosis and classification were made according to the 2009 International Working Group criteria. Fourteen infants were identified. Their bleeding scores were Grades 1 to 2 (79%), Grade 3 (22%), Grades 4 to 5 (0%). Eight patients received treatment with a 75% response rate. Three patients (21%) developed chronic ITP. These observations suggest that ITP in very young patients is similar to typical childhood ITP. Author Information Departments of *Pediatrics †Pathology, Stanford University School of Medicine, Palo Alto, CA The authors declare no conflict of interest. Reprints: Clara Lo, MD, Division of Pediatric Hematology/Oncology/Stem Cell Transplantation, 1000 Welch Road, Suite 300, Palo Alto, CA 94304 (e-mail: firstname.lastname@example.org). Received October 13, 2011 Accepted March 29, 2012 © 2013 by Lippincott Williams & Wilkins.