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Living with WT limb-blood syndrome

A very rare inherited condition with severe low blood counts and differences in the bones of the arms and hands.

Understanding WT limb-blood syndrome

WT limb-blood syndrome is a rare condition with severe low blood cell counts and arm and hand bone differences.

GARD describes a severe form of aplastic anemia, in which the bone marrow makes too few blood cells. It comes with differences in the forearm bones and in the hands and fingers, and a higher risk of leukemia. There have been no further descriptions in medical writing since 1995. It often shows in childhood.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Its summary describes these:

  • Severely low blood counts
  • Forearm bone differences
  • Hand and finger differences
  • Higher risk of leukemia

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 blood and bone marrow specialists, bone and joint 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
Blood and bone marrow specialists (hematologists); Bone and joint specialists (orthopedists or orthopedic surgeons); 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 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
How often should blood counts be checked?
Which specialists should be on my care team?
Is genetic counseling available for our family?

Quick facts

Symptoms usually startChild
InheritanceAutosomal Dominant

GARD says changes in genes (variants) cause this condition. It lists autosomal dominant inheritance, but doesn't name a gene.

GeneticBlood

Also known as: radial-ulnar hypoplasia with bone marrow failure and/or leukemia; wt limb blood syndrome; wtsyndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · WT limb-blood syndromeGARD ID 39 · 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 WT limb-blood syndrome.

Explore the WT limb-blood syndrome blog

Explore research for WT limb-blood syndrome

Explore actively recruiting WT limb-blood syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for WT limb-blood syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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