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A rhizomelic chondrodysplasia punctate that has material basis in homozygous or compound heterozygous mutation in the FAR1 gene on chromosome 11p15, which is required for the conversion of fatty acyl-CoAs to fatty alcohols, causing reduction or complete loss of FAR1 activity result in peroxisomal FAR1 deficiency.
Features include always present findings: Microcephaly, Loss of previously acquired skills (developmental regression), Profound intellectual disability, and Spasticity; and common findings: Brain shrinkage (cerebral atrophy), Delayed CNS myelination, Seizure, and Global developmental delay and others. 32 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 10 | Brain shrinkage (cerebral atrophy), Loss of previously acquired skills (developmental regression), Seizure |
Head and neck | 5 | Microcephaly, Coarse facial features, Thin upper lip vermilion |
Muscles | 4 | Brain shrinkage (cerebral atrophy), Low muscle tone (hypotonia), Cerebellar vermis atrophy |
Eyes | 3 | Cataract, Ptosis, Juvenile cataract |
Growth and development | 2 | Growth delay, Short stature |
FAR1 encodes fatty acyl-CoA reductase 1 (515 aa). Catalyzes the reduction of saturated and unsaturated C16 or C18 fatty acyl-CoA to fatty alcohols. Highest expression in Brain Spinal cord cervical c-1 (60.3 TPM) and Esophagus Mucosa (59.2 TPM).
Fatty acyl-CoA reductase 1 deficiency has been associated with mutations in the FAR1 gene on chromosome 11.
The FAR1 protein participates in FAR1 reduces PalmCoA to HXOL and Wax biosynthesis pathways.
FAR1 is classified as a druggable target (Enzyme category) with score 0.0.
Genetic testing for FAR1 is available. Testing is considered supportive for diagnosis.
Biomarker and diagnostic research for fatty acyl-CoA reductase 1 deficiency has been reported in the published literature.
Phenotype severity distribution: 4 always present features, 15 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for fatty acyl-CoA reductase 1 deficiency.
8 publications have been identified in PubMed for fatty acyl-CoA reductase 1 deficiency. Research spans Basic Science / Preclinical (63%), Diagnostic / Biomarker (25%), and Case Report / Case Series (13%).
Honsho M (2026). [PMID: 41061849](https://pubmed.ncbi.nlm.nih.gov/41061849/). *Biochimica et biophysica acta. Molecular and cell biology of lipids*. [Basic Science / Preclinical]
Na BG (2026). [PMID: 41630389](https://pubmed.ncbi.nlm.nih.gov/41630389/). *Annals of transplantation*. [Diagnostic / Biomarker]
Yao X (2026). [PMID: 41754319](https://pubmed.ncbi.nlm.nih.gov/41754319/). *Plants (Basel, Switzerland)*. [Case Report / Case Series]
Cheng W (2025). [PMID: 40624479](https://pubmed.ncbi.nlm.nih.gov/40624479/). *BMC plant biology*. [Diagnostic / Biomarker]
Takahashi T (2025). [PMID: 40931707](https://pubmed.ncbi.nlm.nih.gov/40931707/). *Molecular and cellular biology*. [Basic Science / Preclinical]
Tamazawa A (2025). [PMID: 40288649](https://pubmed.ncbi.nlm.nih.gov/40288649/). *The Journal of biological chemistry*. [Basic Science / Preclinical]
Yuksel S (2025). [PMID: 40473210](https://pubmed.ncbi.nlm.nih.gov/40473210/). *The Journal of biological chemistry*. [Basic Science / Preclinical]
Shambhavi A (2024). [PMID: 37335441](https://pubmed.ncbi.nlm.nih.gov/37335441/). *Indian journal of pediatrics*. [Basic Science / Preclinical]
Data assembled from 7 of 12 sources · Last updated Sep 20, 2026, 6:51 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
AI-curated news mentioning fatty acyl-CoA reductase 1 deficiency
Updated Aug 17, 2026
A recent case report expands the clinical spectrum of autosomal recessive fatty acyl-CoA reductase 1 (FAR1) deficiency by identifying a previously unreported association with imperforate anus. This discovery may enhance understanding and diagnosis of this rare condition.