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Living with Recombinant 8 syndrome

A genetic condition with heart and urinary tract differences, intellectual disability, and a distinctive facial look.

Understanding Recombinant 8 syndrome

Recombinant 8 syndrome is a genetic condition with complex heart differences, urinary tract differences, moderate to severe intellectual disability, and low or high muscle tone.

The most common heart differences are tetralogy of Fallot and conotruncal defects. Facial features include a wide, square face, a thin upper lip, a downturned mouth, a small chin, and wide-set eyes. People may also have overgrown gums, tooth differences, cleft lip or palate, ear infections, or hearing loss. Males often have undescended testes. GARD lists onset in the newborn or infant period.

Signs & symptoms

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

  • Heart differences, such as tetralogy of Fallot
  • Kidney and urinary tract differences
  • Intellectual disability
  • Distinct facial features
  • Repeated ear infections and hearing loss
  • Cleft lip or palate

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 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
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 Chromosome Disorder Outreach
  • 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
Should I or other family members have chromosome testing?
What heart surgery or treatment is recommended?
How should hearing, kidneys, and development be monitored?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

GARD lists autosomal dominant inheritance. It doesn't name a gene here.

Genetic

Also known as: chromosome 8q22.1-qter duplication and 8pter-p23.1 deletion; duplication 8q/deletion 8p; rec(8) syndrome; rec8 syndrome; recombinant chromosome 8 syndrome; san luis valley syndrome

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Recombinant 8 syndromeGARD ID 9698 · 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 Recombinant 8 syndrome.

Explore the Recombinant 8 syndrome blog

Explore research for Recombinant 8 syndrome

Explore actively recruiting Recombinant 8 syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Recombinant 8 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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