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Living with Thin ribs-tubular bones-dysmorphism syndrome

An extremely rare bone condition present at birth with thin ribs and long bones and certain facial features.

Understanding Thin ribs-tubular bones-dysmorphism syndrome

Thin ribs-tubular bones-dysmorphism syndrome is an extremely rare bone condition in which the ribs and long bones are thin.

People also have a high-arched palate and distinctive facial features, including a prominent forehead and low-set ears that rotate toward the back. Boys may have undescended testes on both sides. It is noticed at birth.

Signs & symptoms

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

  • Thin ribs
  • Thin, slender long bones
  • High-arched roof of the mouth
  • Prominent forehead (frontal bossing)
  • Ears rotated toward the back of the head
  • Larger than usual head (macrocephaly)

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. Ask which tests can help

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

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 help find the cause?
Which specialists should be on our care team?
How are bone and rib differences followed over time?

Quick facts

Symptoms usually startNewborn

GARD says changes in genes (variants) cause this condition, but it doesn't name a specific gene.

Genetic

Also known as: sharma kapoor ramji syndrome; sharma-kapoor-ramji syndrome; thin ribs, tubular bones, dysmorphism syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Thin ribs-tubular bones-dysmorphism syndromeGARD ID 18727 · 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 Thin ribs-tubular bones-dysmorphism syndrome.

Explore the Thin ribs-tubular bones-dysmorphism syndrome blog

Explore research for Thin ribs-tubular bones-dysmorphism syndrome

Explore actively recruiting Thin ribs-tubular bones-dysmorphism syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Thin ribs-tubular bones-dysmorphism 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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