Hematologically important mutations: Leukocyte adhesion deficiency (first update)

Edith van de Vijver, Anne Maddalena, Özden Sanal, Steven M. Holland, Gulbu Uzel, Manisha Madkaikar, Martin de Boer, Karin van Leeuwen, M. Yavuz Köker, Nima Parvaneh, Alain Fischer, S. K.Alex Law, Nigel Klein, F. Ilhan Tezcan, Ekrem Unal, Turkan Patiroglu, Bernd H. Belohradsky, Klaus Schwartz, Raz Somech, Taco W. KuijpersDirk Roos*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Leukocyte adhesion deficiency (LAD) is an immunodeficiency caused by defects in the adhesion of leukocytes (especially neutrophils) to the blood vessel wall. As a result, patients with LAD suffer from severe bacterial infections and impaired wound healing, accompanied by neutrophilia. In LAD-I, mutations are found in ITGB2, the gene that encodes the β subunit of the β2 integrins. This syndrome is characterized directly after birth by delayed separation of the umbilical cord. In the rare LAD-II disease, the fucosylation of selectin ligands is disturbed, caused by mutations in SLC35C1, the gene that encodes a GDP-fucose transporter of the Golgi system. LAD-II patients lack the H and Lewis Lea and Leb blood group antigens. Finally, in LAD-III (also called LAD-I/variant) the conformational activation of the hematopoietically expressed β integrins is disturbed, leading to leukocyte and platelet dysfunction. This last syndrome is caused by mutations in FERMT3, encoding the kindlin-3 protein in all blood cells that is involved in the regulation of β integrin conformation.

Original languageEnglish
Pages (from-to)53-61
Number of pages9
JournalBlood Cells, Molecules, and Diseases
Volume48
Issue number1
DOIs
StatePublished - 15 Jan 2012
Externally publishedYes

Keywords

  • GDP-fucose transporter
  • Kindlin-3
  • LAD-I
  • LAD-II
  • LAD-III
  • β Integrins

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