Leukocyte adhesion deficiency in children and Irish setter dogs

Area of Science:

• Immunology
• Genetics
• Veterinary Medicine

Background:

• Leukocyte adhesion deficiency (LAD) is a severe genetic immunodeficiency in children.
• LAD causes life-threatening bacterial infections due to impaired leukocyte function.
• Canine leukocyte adhesion deficiency (CLAD) has been identified in Irish setters.

Purpose of the Study:

• To review the clinical parallels between canine and human LAD.
• To establish the CLAD dog as a large-animal model for LAD research.
• To evaluate the potential of CLAD dogs for preclinical testing of novel therapies.

Main Methods:

• Comparative clinical and genetic analysis of CLAD in dogs and LAD in humans.
• Review of existing literature on CLAD and LAD phenotypes.
• Assessment of the CLAD dog as a translational model for hematopoietic stem cell and gene therapy.

Main Results:

• The clinical presentation of CLAD in Irish setters closely resembles severe LAD in children.
• CLAD dogs exhibit a similar defect in leukocyte adhesion and migration.
• The canine model is suitable for studying disease mechanisms and therapeutic interventions.

Conclusions:

• The CLAD dog serves as a valuable, disease-specific large-animal model for LAD.
• This model can accelerate the development and translation of hematopoietic stem cell and gene therapies for children with LAD.
• Further research using the CLAD model is warranted to advance treatment strategies.