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Living with Normophosphatemic familial tumoral calcinosis

An inherited condition in which calcium deposits form in the skin, usually beginning in infancy.

Understanding Normophosphatemic familial tumoral calcinosis

Normophosphatemic familial tumoral calcinosis is an inherited condition that causes calcium deposits in the skin.

GARD lists calcium deposits in the skin (calcinosis cutis) as the main feature. It may also involve inflamed gums and pink eye. GARD lists infancy as the usual time of onset.

Signs & symptoms

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

  • Calcium deposits in the skin (calcinosis cutis)
  • Inflamed gums (gingivitis)
  • Pink eye (conjunctivitis)

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 bone and joint specialists, cancer specialists, genetic specialists and hormone specialists.

  3. Consider genetic testing

    Changes in SAMD9 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Cancer specialists (oncologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists)
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 Children's Skin Disease 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
How should the skin deposits be monitored or treated?
Would SAMD9 genetic testing help other family members?
Which specialists should be on our care team?

Quick facts

Symptoms usually startInfant
InheritanceAutosomal Recessive
GenesSAMD9

Changes in the SAMD9 gene cause this condition. It is inherited in an autosomal recessive way, meaning a child inherits a changed copy of the gene from each parent.

GeneticEndocrineSkin

Also known as: calcinosis, tumoral, with normophosphatemia; familial normophosphatemic tumoral calcinosis; normocalcemic tumoral calcinosis; tumoral calcinosis, familial, normophosphatemic

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Normophosphatemic familial tumoral calcinosisGARD ID 10878 · 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 Normophosphatemic familial tumoral calcinosis.

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