Overview
CIDEC-related familial partial lipodystrophy is an extremely rare genetic condition that affects how the body stores fat. It is also known as familial partial lipodystrophy type 5 (FPLD5). In this condition, the CIDEC gene does not work properly. The CIDEC protein normally plays an important role in helping fat cells (adipocytes) store fat in large, single droplets. When this protein is faulty, fat cells cannot store fat correctly, leading to a partial loss of fat tissue under the skin, particularly in the arms, legs, and hips. Because fat cannot be stored properly in fat tissue, it builds up in places it should not, such as the liver and muscles. People with this condition often develop insulin resistance, meaning the body does not respond well to insulin. This can lead to type 2 diabetes, high levels of triglycerides (a type of fat) in the blood, and fatty liver disease. Some patients may also notice changes in their body shape, with less fat in the limbs but sometimes more fat around the trunk or face. Women may experience irregular menstrual periods and signs of excess male hormones, such as increased body hair or acne. There is currently no cure for CIDEC-related familial partial lipodystrophy. Treatment focuses on managing the metabolic complications. This includes controlling blood sugar with diabetes medications, lowering triglycerides with lipid-lowering drugs, and following a carefully managed diet. In some cases, metreleptin (brand name Myalept) may be considered if leptin levels are low, as this medication replaces the hormone leptin that fat tissue normally produces. Regular monitoring by a team of specialists is essential to prevent serious complications like heart disease and liver damage.
Also known as:
Key symptoms:
Loss of fat under the skin in the arms and legsLoss of fat in the hip areaIncreased fat around the abdomen or trunkInsulin resistance or type 2 diabetesHigh triglyceride levels in the bloodFatty liver diseaseEnlarged liverDark, velvety skin patches (acanthosis nigricans)Irregular menstrual periods in womenExcess body hair in womenAcneMuscle pain or crampingSmall fat droplets in fat cells (multilocular lipid droplets)Low leptin levels
Clinical phenotype terms (16)— hover any for plain English
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Variable
Can begin at different ages, from infancy through adulthood
Treatments
No FDA-approved treatments are currently listed for CIDEC-related familial partial lipodystrophy.
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Specialists
View all specialists →No specialists are currently listed for CIDEC-related familial partial lipodystrophy.
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 CIDEC-related familial partial lipodystrophy.
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Caregiver Resources
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Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.How severe is the fat loss in my case, and which areas of my body are most affected?,What are my current triglyceride, blood sugar, and leptin levels, and what do they mean?,Am I a candidate for metreleptin (Myalept) therapy?,What dietary plan do you recommend, and should I see a specialized dietitian?,How often should I have my liver checked, and what tests are needed?,Are there any clinical trials or new treatments being studied for this condition?,Should my family members be tested for the CIDEC gene mutation?
Common questions about CIDEC-related familial partial lipodystrophy
What is CIDEC-related familial partial lipodystrophy?
CIDEC-related familial partial lipodystrophy is an extremely rare genetic condition that affects how the body stores fat. It is also known as familial partial lipodystrophy type 5 (FPLD5). In this condition, the CIDEC gene does not work properly. The CIDEC protein normally plays an important role in helping fat cells (adipocytes) store fat in large, single droplets. When this protein is faulty, fat cells cannot store fat correctly, leading to a partial loss of fat tissue under the skin, particularly in the arms, legs, and hips. Because fat cannot be stored properly in fat tissue, it builds up
How is CIDEC-related familial partial lipodystrophy inherited?
CIDEC-related familial partial lipodystrophy follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.