Overview
Microcephalic primordial dwarfism-insulin resistance syndrome is an extremely rare genetic condition that affects growth and the body's ability to use insulin properly. People with this condition are born very small and have a head that is significantly smaller than expected (microcephaly). Growth remains severely restricted throughout life, resulting in very short stature, which is referred to as primordial dwarfism because the growth restriction begins before birth. In addition to the small body size and head, affected individuals develop insulin resistance, meaning their body does not respond normally to the hormone insulin. This can lead to high blood sugar levels and features similar to type 2 diabetes, sometimes at a very young age. Other features may include distinctive facial characteristics, abnormal fat distribution, and skin changes related to insulin resistance such as darkened, thickened patches of skin (acanthosis nigricans). Some individuals may also have intellectual disability or developmental delays. Because this syndrome is so rare, treatment is mainly supportive and focused on managing symptoms. Blood sugar and insulin levels need to be carefully monitored and treated. Growth hormone therapy may be considered but its effectiveness in this specific condition is not well established. A team of specialists is typically needed to address the various aspects of this complex condition. The syndrome may also be referred to by names related to the specific gene involved, such as conditions linked to mutations in genes affecting DNA damage repair or centrosome function.
Key symptoms:
Very small head size (microcephaly)Severe short stature present from birthLow birth weightInsulin resistance or diabetes-like symptomsHigh blood sugar levelsDarkened, thickened skin patches (acanthosis nigricans)Distinctive facial featuresAbnormal body fat distributionDelayed development or intellectual disabilityFeeding difficulties in infancySmall jawProminent nose relative to face sizeThin or sparse hairHigh-pitched voice
Clinical phenotype terms (9)— hover any for plain English
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Neonatal
Begins at or shortly after birth (first 4 weeks)
Treatments
No FDA-approved treatments are currently listed for Microcephalic primordial dwarfism-insulin resistance syndrome.
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Specialists
View all specialists →No specialists are currently listed for Microcephalic primordial dwarfism-insulin resistance syndrome.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to Microcephalic primordial dwarfism-insulin resistance syndrome.
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Caregiver Resources
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Social Security Disability
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Questions for your doctor
Bring these to your next appointment
- Q1.What specific gene mutation is causing my child's condition, and what does it mean for their health?,How should we monitor and manage insulin resistance, and how often should blood sugar be checked?,What developmental milestones should we watch for, and what therapies are recommended?,Are there any clinical trials or research studies we could participate in?,What specialists should be part of our care team, and how often should we see them?,What are the long-term health risks we should be aware of?,If we plan to have more children, what is the chance they could also be affected?
Common questions about Microcephalic primordial dwarfism-insulin resistance syndrome
What is Microcephalic primordial dwarfism-insulin resistance syndrome?
Microcephalic primordial dwarfism-insulin resistance syndrome is an extremely rare genetic condition that affects growth and the body's ability to use insulin properly. People with this condition are born very small and have a head that is significantly smaller than expected (microcephaly). Growth remains severely restricted throughout life, resulting in very short stature, which is referred to as primordial dwarfism because the growth restriction begins before birth. In addition to the small body size and head, affected individuals develop insulin resistance, meaning their body does not respo
How is Microcephalic primordial dwarfism-insulin resistance syndrome inherited?
Microcephalic primordial dwarfism-insulin resistance syndrome follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Microcephalic primordial dwarfism-insulin resistance syndrome typically begin?
Typical onset of Microcephalic primordial dwarfism-insulin resistance syndrome is neonatal. Age of onset can vary across affected individuals.