Overview
Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome is an extremely rare genetic disorder that affects multiple body systems. The name describes its main features: sideroblastic anemia (a type of anemia where the bone marrow produces abnormal red blood cells that contain iron deposits arranged in a ring pattern), problems with the immune system (specifically B-cell immunodeficiency, meaning the body has trouble making certain infection-fighting cells), recurring fevers that come and go in cycles, and delays in reaching developmental milestones such as walking and talking. Because the immune system does not work properly, affected children are more prone to infections. The anemia can cause tiredness, pale skin, and weakness because the blood cannot carry oxygen as well as it should. Developmental delays may affect learning, speech, and motor skills. The periodic fevers can be distressing and may occur without any obvious infection. This syndrome is caused by mutations in the TRNT1 gene. Treatment is mainly supportive and focuses on managing each symptom individually. This may include blood transfusions for anemia, immunoglobulin replacement therapy to help fight infections, medications to control fevers and inflammation, and early intervention therapies for developmental delays. Because the condition is so rare, there is no established cure, and management requires a coordinated team of specialists.
Also known as:
Key symptoms:
Anemia causing tiredness and pale skinFrequent or severe infectionsRecurring fevers that come and goDelayed development in walking, talking, or learningLow levels of antibodies in the bloodWeakness and low energyPoor growth or failure to thriveHearing loss or vision problems in some casesEnlarged liver or spleenBrittle or abnormal nailsIntellectual disabilityInflammatory episodesLow B-cell counts
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Infantile
Begins in infancy, roughly 1 month to 2 years old
Treatments
No FDA-approved treatments are currently listed for Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome.
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Specialists
View all specialists →No specialists are currently listed for Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay 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 Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
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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 my child's anemia, and will they need regular blood transfusions?,Should my child receive immunoglobulin replacement therapy, and how often?,What signs of infection should I watch for, and when should I go to the emergency room?,What developmental therapies do you recommend, and how soon should we start?,Are there any medications that can help control the periodic fevers?,Is bone marrow transplant an option for my child?,Are there any clinical trials or research studies we should know about?
Common questions about Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome
What is Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome?
Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome is an extremely rare genetic disorder that affects multiple body systems. The name describes its main features: sideroblastic anemia (a type of anemia where the bone marrow produces abnormal red blood cells that contain iron deposits arranged in a ring pattern), problems with the immune system (specifically B-cell immunodeficiency, meaning the body has trouble making certain infection-fighting cells), recurring fevers that come and go in cycles, and delays in reaching developmental milestones su
How is Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome inherited?
Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome typically begin?
Typical onset of Congenital sideroblastic anemia-B-cell immunodeficiency-periodic fever-developmental delay syndrome is infantile. Age of onset can vary across affected individuals.