Specific Granule Deficiency Due To Novel Homozygote SMARCD2 Variant

Creative Commons License

Kihtir Z., Çelik K., Tayfun Küpesiz F., Küpesiz O. A., Kocacik Uygun D. F., Arayici S., ...More

Pediatric, Allergy, Immunology, and Pulmonology, vol.35, no.1, pp.43-46, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 35 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1089/ped.2021.0070
  • Journal Name: Pediatric, Allergy, Immunology, and Pulmonology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, CAB Abstracts, CINAHL, EMBASE, MEDLINE, Veterinary Science Database
  • Page Numbers: pp.43-46
  • Keywords: cytoplasmic granules, genetics, immunologic deficiency syndromes, neutrophils, newborn
  • Akdeniz University Affiliated: Yes


Copyright © 2022 Mary Ann Liebert, Inc.Background: Specific granule deficiency (SGD) is a rare immunodeficiency associated with CCAT/enhancer-binding protein epsilon (CEBPE) gene variants. It can cause severe recurrent infections and is lethal without successful stem cell transplantation. Few cases with SGD of both type 1 and type 2 have been described in the literature. In this study, we present the first report of a case with a novel homozygous c.511 C > T (p.Gln171Ter) mutation in the SMARCD2 gene of SGD type 2, which was successfully treated with bone marrow transplantation. Case: A male infant presented to our neonatal intensive care unit on the second day of life with an icteric appearance and mild hypotonia. He was evaluated for immunodeficiency as the cause of delayed cord separation and refractory neutropenia. At 6 weeks of age, SGD type 2 with a new variant was diagnosed and successfully treated by bone marrow transplantation. Conclusion: SGD is an immunodeficiency disease that is quite rare. However, we believe that SGD diagnosis and associated new variants can be detected more frequently with the widespread use of all whole-exome sequencing techniques.