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Living with Leukocyte adhesion deficiency type II

A rare inherited condition with repeated infections, slow growth, and severe learning and developmental challenges.

Understanding Leukocyte adhesion deficiency type II

Leukocyte adhesion deficiency type II is a form of leukocyte adhesion deficiency with repeated bacterial infections, slow growth, and intellectual disability.

It affects the immune system and the brain. Signs appear in infancy and childhood. Features can include a high white blood cell count, coarse facial features, seizures, and short height.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Repeated infections
  • Severe intellectual disability
  • Slow growth and short stature
  • Seizures
  • High white blood cell count
  • Anemia (low red blood cells)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include allergy and immune system specialists, brain and nervous system specialists, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in SLC35C1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    CDG CARE, Epilepsy Foundation and Immune Deficiency Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Allergy and immune system specialists (allergists / immunologists); Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Expert lists: CDG CARE, Epilepsy Foundation, Immune Deficiency Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with CDG CARE and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Would SLC35C1 gene testing help our family?
Which specialists should follow infections, growth, and development?
What therapies and supports can help with learning and sleep?

Quick facts

Symptoms usually startInfant and as a Child
InheritanceAutosomal Recessive
GenesSLC35C1

It is caused by changes in the SLC35C1 gene. A child inherits a changed copy of the gene from each parent (autosomal recessive).

GeneticNeurologicalInherited Metabolic

Also known as: cdg 2c; cdg iic; cdg syndrome type iic; cdg-iic; cdg2c; cdgiic

Patient organizations

Source: NIH GARD · Leukocyte adhesion deficiency type IIGARD ID 4634 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Leukocyte adhesion deficiency type II.

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  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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