Trait
Basilar impression
Abnormal elevation of the floor of the posterior fossa including occipital condyles and foramen magnum.
Summary
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
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Get my Genome Test5 genes linked to Basilar impression
Changes in these genes cause rare conditions in which Basilar impression is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
| Gene | How often it is seen | Conditions |
|---|---|---|
| NOTCH2notch receptor 2 | Often (30–79%) | In 1 condition |
| DKK1dickkopf Wnt signaling pathway inhibitor 1 | Sometimes (5–29%) | In 1 condition |
| COL1A1collagen type I alpha 1 chain | Not recorded | In 1 condition |
| COL1A2collagen type I alpha 2 chain | Not recorded | In 1 condition |
| ZBTB20zinc finger and BTB domain containing 20 | Not recorded | In 1 condition |
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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