PMID- 24750412 OWN - NLM STAT- MEDLINE DCOM- 20151021 LR - 20191210 IS - 1600-0609 (Electronic) IS - 0902-4441 (Linking) VI - 94 IP - 1 DP - 2015 Jan TI - A novel G6PC3 gene mutation in severe congenital neutropenia: pancytopenia and variable bone marrow phenotype can also be part of this syndrome. PG - 79-82 LID - 10.1111/ejh.12349 [doi] AB - Glucose-6-phosphatase catalytic subunit 3 (G6PC3) deficiency is a newly described syndrome characterized by severe congenital neutropenia associated with multiple organ abnormalities including cardiac and urogenital malformations. The underlying pathophysiology of increased apoptosis of myeloid cells and of neutrophil dysfunction in G6PC3 deficiency involves disturbed glucose metabolism, increased endoplasmic reticulum stress and deficient protein folding. Here, we report a new case of G6PC3 deficiency caused by a novel homozygous G6PC3 gene mutation p.Trp59Arg. The patient showed pancytopenia and a variable bone marrow phenotype with maturation arrest and vacuolization in myeloid lineage cells and a normocellular marrow, respectively. She also showed persistent lymphopenia with low CD4 T- and CD19 B-cell counts. Lymphopenia and even pancytopenia as well as a variable bone marrow phenotype can be part of this syndrome. These clinical findings in a patient with chronic neutropenia should alert the clinician to consider a diagnosis of G6PC3 deficiency. CI - (c) 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Arikoglu, Tugba AU - Arikoglu T AD - Department of Pediatric Allergy and Immunology, Faculty of Medicine, Mersin University, Mersin, Turkey. FAU - Kuyucu, Necdet AU - Kuyucu N FAU - Germeshausen, Manuela AU - Germeshausen M FAU - Kuyucu, Semanur AU - Kuyucu S LA - eng PT - Case Reports PT - Journal Article DEP - 20140513 PL - England TA - Eur J Haematol JT - European journal of haematology JID - 8703985 RN - EC 3.1.3.9 (Glucose-6-Phosphatase) RN - EC 3.1.3.9. (G6PC3 protein, human) RN - Neutropenia, Severe Congenital, Autosomal Recessive 3 SB - IM MH - Bone Marrow/pathology MH - Child, Preschool MH - Congenital Bone Marrow Failure Syndromes MH - Female MH - Glucose-6-Phosphatase/*genetics MH - Humans MH - *Mutation MH - Neutropenia/*congenital/diagnosis/genetics MH - Pancytopenia MH - Phenotype MH - Syndrome OTO - NOTNLM OT - G6PC3 OT - congenital neutropenia OT - lymphopenia OT - variable bone marrow phenotype EDAT- 2014/04/23 06:00 MHDA- 2015/10/22 06:00 CRDT- 2014/04/23 06:00 PHST- 2014/04/16 00:00 [accepted] PHST- 2014/04/23 06:00 [entrez] PHST- 2014/04/23 06:00 [pubmed] PHST- 2015/10/22 06:00 [medline] AID - 10.1111/ejh.12349 [doi] PST - ppublish SO - Eur J Haematol. 2015 Jan;94(1):79-82. doi: 10.1111/ejh.12349. Epub 2014 May 13.