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Living with 11p partial monosomy syndrome

A genetic condition, also called WAGR syndrome, that mainly affects the eyes, kidneys, and development.

Understanding 11p partial monosomy syndrome

11p partial monosomy syndrome, also called WAGR syndrome, is a genetic condition that affects many body systems.

WAGR stands for Wilms tumor (a kidney cancer), aniridia (no colored part of the eye), genitourinary differences, and developmental delays. People with it have a 45 to 60 percent chance of Wilms tumor, most often found in children. Most have aniridia, often the first noticeable sign. Intellectual disability and other developmental delays are common. GARD lists onset as during pregnancy or as a newborn.

Signs & symptoms

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

  • Missing or small iris (colored part of the eye)
  • Clouding of the eye lens (cataract)
  • Involuntary eye movements (nystagmus)
  • Visual impairment
  • Intellectual disability
  • 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 brain and nervous system specialists, cancer specialists, eye disease specialists and genetic specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Cancer specialists (oncologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
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 Aniridia Foundation International 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
How often should my child's kidneys be checked for Wilms tumor?
Which eye specialist should we see for aniridia and related eye problems?
What developmental support is available for my child?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant

GARD says changes in genes (also called variants) cause this condition. It is listed as autosomal dominant.

GeneticNeurologicalKidneyEndocrineUrinary and Reproductive

Also known as: chromosome 11p13 deletion syndrome; del(11)(p13); deletion 11p13; monosomy 11p13; wagr (wilms tumor, aniridia, genitourinary anomalies and mental retardation) syndrome; wagr (wilms tumour, aniridia, genitourinary anomalies and mental retardation) syndrome

Patient organizations

Source: NIH GARD · 11p partial monosomy syndromeGARD ID 5528 · 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 11p partial monosomy syndrome.

Explore the 11p partial monosomy syndrome blog

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Explore actively recruiting 11p partial monosomy syndrome studies with HealthSpark.

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