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Bamforth-Lazarus syndrome is a very rare syndrome of congenital hypothyroidism characterized by thyroid dysgenesis (in most cases athyreosis), cleft palate and spiky hair, with or without choanal atresia, and bifid epiglottis. Facial dysmorphism and porencephaly have been reported in isolated cases.
Features include always present findings: Cleft palate, Decreased circulating T4 concentration, Delayed skeletal maturation, and Feeding difficulties and others; and very common findings: Thyroid agenesis. 19 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Hormones | 5 | Anti-thyroid antibody positivity, Thyroid agenesis, Elevated circulating thyroid-stimulating hormone concentration |
FOXE1 encodes forkhead box E1 (373 aa). Transcription factor that binds consensus sites on a variety of gene promoters and activate their transcription. Highest expression in Thyroid (164.5 TPM) and Esophagus Mucosa (8.2 TPM).
Bamforth-Lazarus syndrome is caused by mutations in the FOXE1 gene on chromosome 9.
FOXE1 is classified as a druggable target (Transcription Factor category) with score 0.0.
Genetic testing for FOXE1 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 11 always present features, 1 very common feature, 2 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for Bamforth-Lazarus syndrome.
3 publications have been identified in PubMed for Bamforth-Lazarus syndrome. Research spans Basic Science / Preclinical (67%) and Clinical Trial Publication (33%).
Kumari P (2025). [PMID: 40670354](https://pubmed.ncbi.nlm.nih.gov/40670354/). *Nat Commun*. [Basic Science / Preclinical]
Kalampalikis A (2025). [PMID: 40062677](https://pubmed.ncbi.nlm.nih.gov/40062677/). *Turk J Obstet Gynecol*. [Clinical Trial Publication]
Raterman ST (2025). [PMID: 39360443](https://pubmed.ncbi.nlm.nih.gov/39360443/). *Dev Dyn*. [Basic Science / Preclinical]
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 6:00 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about Bamforth-Lazarus syndrome
Brain and nerves |
2 |
Global developmental delay, Excessive daytime somnolence |
Lab test results | 2 | Anti-thyroid antibody positivity, Elevated circulating thyroid-stimulating hormone concentration |
Head and neck | 1 | Cleft palate |
Bones and joints | 1 | Delayed skeletal maturation |
Digestive system | 1 | Feeding difficulties |
Pregnancy and birth | 1 | Congenital hypothyroidism |
AI-curated news mentioning Bamforth-Lazarus syndrome
Updated Jul 21, 2026
FDA approved Casgevy CRISPR gene therapy for children as young as 2 with sickle cell disease on July 1, 2026. Here's what families need to know about this milestone. Approximately 5,500 additional American children are now eligible for this established one-time therapy, according to Vertex Pharmaceuticals, Casgevy's developer. Casgevy also covers transfusion-dependent beta-thalassemia in this new age indication. Sickle cell disease is a lifelong inherited blood disorder that warps red blood cells into stiff, crescent shapes that can block blood flow, starving organs and tissues of oxygen. The world's first CRISPR-based gene therapy has been approved for children as young as two years old, opening the possibility of a single, potentially curative treatment to thousands of American children with sickle cell disease before years of organ damage can narrow what medicine can do for them. Families with children aged 2 and older who have sickle cell disease should speak with their pediatric hematologist about whether Casgevy is appropriate to consider at this stage of their child's disease. Ask specifically which authorized treatment centers perform Casgevy in your region. Treatment is available only at specialized sites, and geographic access remains limited. Contact your child's insurance plan or Medicaid office to ask about coverage. Medicaid coverage for gene therapies varies by state, and some states have developed outcomes-based payment models for high-cost therapies. "With today's decision, pediatric patients as young as 2 years of age can now access a critical additional treatment option to treat these debilitating, life-threatening diseases," said Karim Mikhail, acting director of the Office of Therapeutic Products at the FDA's Center for Biologics Evaluation and Research, according to the FDA press announcement. Casgevy is a non-viral, ex vivo CRISPR/Cas9 gene-edited cell therapy.
A new treatment for children aged 2 or older with sickle cell disease has been approved by the U.S. Food & Drug Administration. In a press release on Wednesday, the FDA announced it had approved Casgevy, the first gene therapy for children with sickle cell disease. (NewsNation) — A new treatment for children aged 2 or older with sickle cell disease has been approved by the Food & Drug Administration (FDA). In a Wednesday news release, the FDA announced it had approved Casgevy, the first gene therapy for children with the disease. “Casgevy is a gene therapy consisting of the patient’s own (autologous) hematopoietic (blood) stem cells, administered as a one-time single dose for intravenous infusion,” the release noted. “Pediatric patients as young as 2 years of age can now access a critical additional treatment option to treat these debilitating, life-threatening diseases,” Karim Mikhail, the acting director of the Center for Biologics Evaluation and Research, wrote. “These disorders carry a heavy burden for children and their families, affecting growth, development, and long-term health in profound ways,” Megha Kaushal, acting deputy director of the Office of Therapeutic Products in CBER, said in the release.