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Article

Length polymorphism in the Period 3 gene is associated with sleepiness and maladaptive circadian phase in night-shift workers.

Journal of sleep research - 1 Jun 2015

Drake Christopher L, Belcher Ren, Howard Ryan, Roth Thomas, Levin Albert M, Gumenyuk Valentina

Abstract excerpt

The objective of the current study was to determine if night-shift workers carrying the five-repeat variant of the Period 3 gene show elevated levels of nocturnal sleepiness and earlier circadian phase compared with homozygotes for the four-repeat allele. Twenty-four permanent night-shift workers...

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Source

Identifiers

PMID: 25545397
DOI: 10.1111/jsr.12264

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 4 Sept 2026. Prepared record publication-25545397-2026-09-04.2. Manifest publication-graph-cohort-2026-09-04.2.

Source receipt: PubMed via Helena Literature Corpus, retrieved 4 Sept 2026.

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