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Living with Blepharophimosis - intellectual disability syndrome, MKB type

A rare genetic syndrome seen only in males, with intellectual disability and distinct facial features.

Understanding Blepharophimosis - intellectual disability syndrome, MKB type

Blepharophimosis - intellectual disability syndrome, MKB type (Maat-Kievit-Brunner type of Ohdo syndrome) is a rare condition with intellectual disability and distinct facial features.

It has only been reported in males. Intellectual disability ranges from mild to severe, and motor skills like sitting and walking are delayed. Some people have behavior problems. Facial features include narrow eyelid openings, droopy eyelids, and a rounded nose tip, and become more pronounced with age. Other signs can include dental problems, low muscle tone, and hearing loss.

Signs & symptoms

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

  • Intellectual disability
  • Narrow eyelid openings (blepharophimosis)
  • Low muscle tone in infants
  • Prominent or bulbous nose
  • Triangular face
  • Coarse facial features

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 brain and nervous system specialists, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in MED12 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
Brain and nervous system specialists (neurologists); 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 Simons Searchlight
  • 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 MED12 gene testing confirm the diagnosis?
What therapies can support motor skills and learning?
Should hearing and teeth be checked regularly?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceX-Linked
GenesMED12

Changes in the MED12 gene cause this condition. It is inherited in an X-linked way.

GeneticNeurological

Also known as: blepharophimosis-intellectual disability syndrome maat-kievit-brunner type; blepharophimosis-intellectual disability syndrome, maat-kievit-brunner type; blepharophimosis-intellectual disability syndrome, mkb type; bmrs, maat-kievit-brunner type; bmrs, mkb type; ohdo syndrome, maat-kievit-brunner type

Patient organizations

  • Simons SearchlightBlepharophimosis - intellectual disability syndrome, MKB type · United States
Source: NIH GARD · Blepharophimosis - intellectual disability syndrome, MKB typeGARD ID 17341 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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