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Living with Gastrointestinal defects and immunodeficiency syndrome 1

A rare genetic condition with blocked or missing sections of the intestine, a weak immune system, and bowel and liver problems.

Understanding Gastrointestinal defects and immunodeficiency syndrome 1

Gastrointestinal defects and immunodeficiency syndrome 1 is a rare genetic disease with intestinal blockages and a weak immune system.

The main feature is multiple intestinal atresia, where parts of the digestive tract are blocked or closed, from the stomach to the rectum. It also involves combined immunodeficiency and inflammatory bowel disease. Other features include liver problems such as cholestasis and cirrhosis, and a small thymus gland. People are more likely to get bacterial and viral infections.

Signs & symptoms

GARD lists these among the clinical features:

  • Blocked or missing sections of the intestine (atresia)
  • Calcium deposits in the belly
  • Slowed bile flow in the liver (cholestasis)
  • Liver scarring (cirrhosis)
  • Small thymus gland
  • More frequent bacterial and viral infections

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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 confirm the diagnosis and find the gene?
How will the immune system be monitored and protected from infections?
Which specialists should care for the digestive tract and the liver?

Quick facts

GARD describes this as a genetic disease but does not list the gene or how it is inherited.

Also known as: autosomal recessive combined immunodeficiency with multiple intestinal atresias; cid-mia/early-onset ibd - combined immunodeficiency-multiple intestinal atresia/early-onset inflammatory bowel disease; combined immunodeficiency due to ttc7a mutation; combined immunodeficiency-enteropathy spectrum; combined immunodeficiency, enteropathy spectrum; fipa

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Gastrointestinal defects and immunodeficiency syndrome 1GARD ID 17731 · 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 Gastrointestinal defects and immunodeficiency syndrome 1.

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Explore actively recruiting Gastrointestinal defects and immunodeficiency syndrome 1 studies with HealthSpark.

HealthSpark

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  • Eligibility is confirmed by the study team

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