Featured this week: 

• Abdalla Abdalla, MBBCh
• Mohamad Eletrebi, MBBCh
• Carol Holman, MD, PhD
• Aaruni Khanolkar, MBBS, PhD
• Juan José Sánchez Ramírez
• Brian Swick, MD, FAAD

• Establishment of pediatric reference ranges for circulating naïve and memory T and B cell subsets guided by the human immunophenotyping consortium standardization initiative: A large, single center U.S. experience. Khanolkar A, Ahmed A. Cytometry B Clin Cytom. 2026 May 11. doi: 10.1002/cyto.b.70039. Online ahead of print. PMID: 42116618
   

• Use of ancillary studies in pediatric spitzoid neoplasms: A retrospective cohort study. Chen A, Krenitsky A, Perry SS, Tan KW, Swick BL, Anderson KR, Barry KK, Kelsey B, Carlberg VM, Coughlin CC, Craddock M, Fadzeyeva H, Ferringer T, Gerami P, Grichnik JM, Hawryluk EB, Hogeling M, Humphrey SR, Harview CL, Berrebi KG; Full list of remaining authors by institution are included in the supplement. J Am Acad Dermatol. 2026 May 8:S0190-9622(26)02613-7. doi: 10.1016/j.jaad.2026.05.004. Online ahead of print. PMID: 42107785
   

• Hypereosinophilia of persistent/unknown cause: a bone marrow-based study integrating WHO-HAEM5 criteria and myeloid next-generation sequencing. Eletrebi MM, Sanchez-Ramirez J, Abdalla A, Holman CJ.Am J Clin Pathol. 2026 May 5;165(5):aqag031. doi: 10.1093/ajcp/aqag031.PMID: 42106910