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Living with Craniolenticulosutural dysplasia

A rare genetic condition with large, late-closing soft spots on the skull, wide-set eyes, early cataracts, and mild bone differences.

Understanding Craniolenticulosutural dysplasia

Craniolenticulosutural dysplasia (CLSD), also known as Boyadjiev-Jabs syndrome, is a rare genetic condition that affects the skull, eyes, and skeleton.

It is marked by large soft spots on the skull (fontanels) that close late, wide-set eyes (hypertelorism), cataracts that start early, and mild skeletal differences throughout the body. Teeth and hair can also be affected. It is noticed in newborns and infants.

Signs & symptoms

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

  • Large, late-closing soft spots on the skull
  • Early cataracts
  • Wide-set eyes (hypertelorism)
  • Small teeth and early tooth loss
  • Prominent forehead
  • Brittle or coarse hair

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 eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in SEC23A 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
Eye disease specialists (ophthalmologists); 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 SEC23A gene testing help our family?
How often should the eyes be checked for cataracts?
What dental care will my child need?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesSEC23A

It is caused by changes in the SEC23A gene. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

Genetic

Also known as: boyadjiev jabs syndrome; boyadjiev-jabs syndrome; clsd; cranio-lenticulo-sutural dysplasia, clsd

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Craniolenticulosutural dysplasiaGARD ID 16647 · 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 Craniolenticulosutural dysplasia.

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