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Trait

Shortened sleep phase

A tendency to sleep fewer hours than usual while feeling well-rested.

HPO HP:0033063

Summary

Also called
Short sleep
Body system
Abnormality of the nervous system

5 genes linked to Shortened sleep phase

Changes in these genes cause rare conditions in which Shortened sleep phase 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.

GeneHow often it is seenConditions
NPSR1neuropeptide S receptor 1AlwaysIn 1 condition
ADRB1adrenoceptor beta 1Very often (80–99%)In 1 condition
OCA2OCA2 melanosomal transmembrane proteinSometimes (5–29%)In 1 condition
UBE3Aubiquitin protein ligase E3ASometimes (5–29%)In 1 condition
BHLHE41basic helix-loop-helix family member e41Not recordedIn 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

Sleep-wake cycle disturbance

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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