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Living with Bardet-Biedl syndrome 6

A genetic condition that affects vision, weight, the hands and feet, the kidneys, and learning.

Understanding Bardet-Biedl syndrome 6

Bardet-Biedl syndrome 6 is a rare disease that affects many parts of the body, including the eyes, kidneys, fingers and toes, and learning.

It can cause eye problems such as rod-cone dystrophy, in which light-sensitive cells in the retina break down and vision is lost. It also affects thinking and learning and body weight. In males it affects sex development, and in females the urinary and reproductive systems.

Signs & symptoms

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

  • Retina changes (pigmentary retinopathy)
  • Obesity
  • Extra fingers or toes (postaxial polydactyly)
  • Intellectual disability
  • Diabetes
  • Opening of the urethra on the underside of the penis (hypospadias)

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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 Bardet-Biedl Syndrome Foundation & Family Association
  • 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
Can genetic testing confirm which BBS gene is involved?
How often should my vision and kidneys be checked?
How can weight and blood sugar be managed?

Quick facts

InheritanceAutosomal Recessive

It is autosomal recessive, so a child inherits a changed copy of a gene from each parent. GARD does not name a gene here.

Also known as: bardet-biedl syndrome type 6; bbs6

Patient organizations

Source: NIH GARD · Bardet-Biedl syndrome 6GARD ID 10205 · 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 Bardet-Biedl syndrome 6.

Explore the Bardet-Biedl syndrome 6 blog

Explore research for Bardet-Biedl syndrome 6

Explore actively recruiting Bardet-Biedl syndrome 6 studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Bardet-Biedl syndrome 6 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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