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Data assembled from 7 of 12 sources · Last updated Sep 20, 2026, 5:22 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 23 | Inability to walk, Seizure, Irritability |
Muscles | 5 | Low muscle tone (hypotonia), Brain shrinkage (cerebral atrophy), Ankle flexion contracture |
Head and neck | 5 | Progressive microcephaly, Microcephaly, Secondary microcephaly |
Digestive system | 3 | Difficulty swallowing (dysphagia), Gastroesophageal reflux, Gastrostomy tube feeding in infancy |
Arms and legs | 1 | Lower limb spasticity |
Kidneys and urinary system | 1 | Urinary incontinence |
Lungs and breathing | 1 | Recurrent respiratory infections |
Blood and immune system | 1 | Recurrent respiratory infections |
Bones and joints | 1 | Multiple joint contractures |
SLC1A4 function has not been fully characterized.
Spastic tetraplegia-thin corpus callosum-progressive postnatal microcephaly syndrome is caused by mutations in the SLC1A4 gene on chromosome 2.
Genetic testing for SLC1A4 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 5 always present features, 1 very common feature, 15 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for spastic tetraplegia-thin corpus callosum-progressive postnatal microcephaly syndrome.
5 publications have been identified in PubMed for spastic tetraplegia-thin corpus callosum-progressive postnatal microcephaly syndrome. Research spans Case Report / Case Series (50%), Review / Meta-Analysis (25%), and Basic Science / Preclinical (25%).
Manav Yigit Z (2026). [PMID: 41545183](https://pubmed.ncbi.nlm.nih.gov/41545183/). *Journal of medical genetics*. [Case Report / Case Series]
Mujahed RH (2026). [PMID: 41934118](https://pubmed.ncbi.nlm.nih.gov/41934118/). *J Investig Med High Impact Case Rep*. [Case Report / Case Series]
Elazar D (2025). [PMID: 40076728](https://pubmed.ncbi.nlm.nih.gov/40076728/). *International journal of molecular sciences*. [Review / Meta-Analysis]
Zhou X (2024). [PMID: 39091855](https://pubmed.ncbi.nlm.nih.gov/39091855/). *bioRxiv : the preprint server for biology*. [Basic Science / Preclinical]