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Living with Combined immunodeficiency due to STIM1 deficiency

A rare inherited immune condition with repeated infections in childhood, low muscle tone and soft tooth enamel.

Understanding Combined immunodeficiency due to STIM1 deficiency

Combined immunodeficiency due to STIM1 deficiency, also called immunodeficiency-10, is a rare inherited condition of the immune system.

Repeated infections begin in childhood because T and NK immune cells do not work well, and how severe it is varies. People may also have low muscle tone, reduced sweating or soft tooth enamel (amelogenesis imperfecta). It appears in newborns and infants.

Signs & symptoms

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

  • Repeated bacterial infections
  • Repeated ear infections and pneumonia
  • Low muscle tone (hypotonia)
  • Soft tooth enamel
  • Autoimmune anemia and low platelets
  • Enlarged liver, spleen and lymph nodes

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 STIM1 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 Immune Deficiency Foundation
  • 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
Should we have genetic testing for the STIM1 gene?
How can we lower the chance of infections?
Do we need dental and muscle specialists?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesSTIM1

Changes in the STIM1 gene are listed. It is autosomal recessive, so a child inherits a changed copy from each parent.

Genetic

Also known as: cid due to stim1 deficiency; immunodeficiency 10; immunodeficiency type 10; stim1 deficiency

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Combined immunodeficiency due to STIM1 deficiencyGARD ID 10523 · 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

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