title: Atypical Omenn Syndrome due to Adenosine Deaminase Deficiency.
abstract: We present here a novel case of an atypical Omenn syndrome (OS) phenotype due to mutations in the ADA gene encoding adenosine deaminase. This case is noteworthy for a significant increase in circulating CD56(bright)CD16- cytokine-producing NK cells after treatment with steroids for skin rash.
authors.affiliation: Division of Pediatric and Adult Allergy and Immunology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN 55905, USA ; Department of Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Avni Y
authors.initials: AY
authors.lastname: Joshi
authors.affiliation: Department of Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Erin K
authors.initials: EK
authors.lastname: Ham
authors.affiliation: Department of Medical Genetics, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Neel B
authors.initials: NB
authors.lastname: Shah
authors.affiliation: Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Dong
authors.affiliation: Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Shakila P
authors.initials: SP
authors.lastname: Khan
authors.affiliation: Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Roshini S
authors.initials: RS
authors.lastname: Abraham