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Living with Autosomal recessive severe congenital neutropenia due to G6PC3 deficiency

A rare inherited immune condition with low neutrophils, repeated infections, and sometimes heart and urinary differences.

Understanding Autosomal recessive severe congenital neutropenia due to G6PC3 deficiency

Autosomal recessive severe congenital neutropenia due to G6PC3 deficiency is a rare genetic condition that affects the immune system.

People often have very low levels of neutrophils, white blood cells that fight infection, which makes serious bacterial infections more likely. It can also affect how the heart, urinary system, and reproductive system form. Some people have global developmental delay, small facial differences, and low platelet counts that come and go. Onset is listed as the newborn period and infancy.

Signs & symptoms

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

  • Low neutrophil count in the blood
  • Serious infection in newborns (sepsis)
  • Repeated urinary tract infections
  • Low platelets that come and go
  • Hole between the upper heart chambers (atrial septal defect)
  • Undescended testes (cryptorchidism)

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 and genetic specialists.

  3. Consider genetic testing

    Changes in G6PC3 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

    Immune Deficiency Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Allergy and immune system specialists (allergists / immunologists); Genetic specialists (geneticists)
Expert care
Expert lists: 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 National Neutropenia Network 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
Can genetic testing for the G6PC3 gene confirm the diagnosis?
Should my child's heart and kidneys be checked?
What signs of infection should I call the doctor about right away?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesG6PC3

It is caused by changes in the G6PC3 gene. It is autosomal recessive, so a child inherits a changed copy of the gene from each parent.

Genetic

Also known as: autosomal recessive severe congenital neutropenia due to glucose-6-phosphatase catalytic subunit 3 deficiency; dursun syndrome; g6pc3 deficiency; neutropenia, severe congenital 4, autosomal recessive; pulmonary arterial hypertension, leukopenia, and atrial septal defect; scn4

Patient organizations

Source: NIH GARD · Autosomal recessive severe congenital neutropenia due to G6PC3 deficiencyGARD ID 17511 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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Perspectives from people navigating life with Autosomal recessive severe congenital neutropenia due to G6PC3 deficiency.

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