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Living with Laurin-Sandrow syndrome

A very rare condition that changes how the hands, feet, nose, and limb bones form.

Understanding Laurin-Sandrow syndrome

Laurin-Sandrow syndrome is a very rare condition marked by extra or fused fingers, mirror-image feet, and differences in the nose.

Features include fused and extra fingers, mirror-image feet, and a small nose with a short nasal tip. Forearm or lower leg bones may be duplicated, and sometimes the shinbone (tibia) is missing. It has been described in fewer than 20 cases and may be noticed during pregnancy or at birth.

Signs & symptoms

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

  • Extra thumb (preaxial polydactyly)
  • Fused fingers or toes (syndactyly)
  • Mirror-image extra fingers or toes
  • Duplicated calf bone (fibula)
  • Missing shinbone (absent tibia)
  • Flat or prominent nose

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 and genetic specialists.

  3. Consider genetic testing

    Changes in LMBR1 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); 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
Would genetic testing, including the LMBR1 gene, help us?
Which specialists should plan care for the hands and feet?
How could this affect other family members or future pregnancies?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant
GenesLMBR1

GARD says the cause is unknown, and different ways of inheritance have been suggested. The LMBR1 gene is listed, and the condition is listed as autosomal dominant.

Genetic

Also known as: fibula and ulna, duplication of, with absence of tibia and radius; laurin sandrow syndrome; lss; mirror hands and feet co-occurrent with nasal defect; mirror hands and feet with nasal defects; mirror hands and feets-nasal defects syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Laurin-Sandrow syndromeGARD ID 155 · 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 Laurin-Sandrow syndrome.

Explore the Laurin-Sandrow syndrome blog

Explore research for Laurin-Sandrow syndrome

Explore actively recruiting Laurin-Sandrow syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Laurin-Sandrow 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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