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Features include always present findings: Inability to walk, Biceps hyperreflexia, Intellectual disability, and Absent speech and others; and common findings: Ankle clonus. 22 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 12 | Inability to walk, Seizure, Lower limb spasticity |
Biomarker and diagnostic research for spastic paraplegia 18b, autosomal recessive has been reported in the published literature.
Phenotype severity distribution: 6 always present features, 1 common feature.
No clinical trials have been registered for spastic paraplegia 18b, autosomal recessive.
1 publication has been identified in PubMed for spastic paraplegia 18b, autosomal recessive. Research spans Diagnostic / Biomarker (100%).
Skrypnyk C (2024). [PMID: 39425040](https://pubmed.ncbi.nlm.nih.gov/39425040/). *BMC Pregnancy Childbirth*. [Diagnostic / Biomarker]
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 11:59 AM UTC
Online Mendelian Inheritance in Man
Bones and joints
4 |
Skeletal muscle atrophy, Sideways curvature of the spine (scoliosis), Joint contracture |
Arms and legs | 3 | Lower limb spasticity, Lower limb muscle weakness, Upper limb spasticity |
Muscles | 3 | Lower limb muscle weakness, Skeletal muscle atrophy, Joint contracture |
Eyes | 1 | Strabismus |
Head and neck | 1 | High palate |