SynthesisNeurology2023
Circadian Features of Cluster Headache and Migraine: A Systematic Review, Meta-analysis, and Genetic Analysis.
Synthesis in Neurology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 69 citations in OpenAlex.
- Efficacy and Safety of Melatonin in Migraine Prophylaxis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.Current pain and headache reports · 2026Pooled it
- Disrupting the clock: meta-analysis of irregular night shifts and migraine, proposing shift work migraine disorder with chronobiology strategies.Frontiers in neurology · 2025Pooled it
- Classic Psychedelics for Treating Chronic Pain: Mechanism and Clinical Translation.Molecules (Basel, Switzerland) · 2026Review
- Sleep quality and chronotype in primary headache disorders: a nationwide population-based study of 5,311 Polish adults.The journal of headache and pain · 2026Article
- Impact of climatic factors on trigeminal neuralgia and facial neuropathy in primary care during a fourteen-year time-series study.Scientific reports · 2026Article
- Sleep Domain Predictors of Headache-Related Disability in Episodic Migraine and Cluster Headache: A Prospective Observational Cohort Study.Journal of clinical medicine · 2026Article
- The evolving landscape of primary headache therapy.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026Article
- Overlapping pathways of migraine and the endocannabinoid system: Potential therapeutic targets.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026Review
- Is it time to think about chronotherapy in migraine.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026Review
- Shift work migraine disorder: evidence, mechanisms, and implications for diagnosis, prevention, and management.The journal of headache and pain · 2026Review
- Shifts with Nights and Migraine Prevalence Among Nurses: A Systematic Review and Meta-Analysis.Healthcare (Basel, Switzerland) · 2026Review
- Sleep and Headache Disorders: What a Clinician Needs to Know.Current neurology and neuroscience reports · 2026Review
- Abnormal imaging features of episodic cluster headache and episodic migraine: a multimodal 7T MRI study.The journal of headache and pain · 2026Article
- Waning light, waxing pain: The lunar cycle's association with migraine headache occurrence.Headache · 2026Article
- Premonitory phase in primary headaches: shared and divergent mechanisms in migraine and cluster headache, the Junior Editorial Board Members' vision.The journal of headache and pain · 2026Review
- Circadian Regulation of m6A RNA Methylation in Migraine: Mechanisms and Therapeutic Implications.Journal of molecular neuroscience : MN · 2026Review
- Circadian control of immune homeostasis in cardiovascular health and disease.Frontiers in immunology · 2026Review
- Article
- Hallmarks of primary headache: part 4 - rare headache syndromes.The journal of headache and pain · 2025Review
- Expression of melatonin receptors in trigeminal and sphenopalatine ganglia: potential targets for primary headache disorders.The journal of headache and pain · 2025Article
Corrections and comments
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Authors and funding
11 authors at 1 institution in 1 country.
Funding
Abstract
BACKGROUND AND
objectivesCluster headache and migraine have circadian features at multiple levels (cellular, systems, and behavioral). A thorough understanding of their circadian features informs their pathophysiologies.
methodsA librarian created search criteria in MEDLINE Ovid, Embase, PsycINFO, Web of Science, and Cochrane Library. Two physicians independently performed the remainder of the systematic review/meta-analysis using Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. Separate from the systematic review/meta-analysis, we performed a genetic analysis for genes with a circadian pattern of expression (clock-controlled genes or CCGs) by cross-referencing genome-wide association studies (GWASs) of headache, a nonhuman primate study of CCGs in a variety of tissues, and recent reviews of brain areas relevant in headache disorders. Altogether, this allowed us to catalog circadian features at the behavioral level (circadian timing, time of day, time of year, and chronotype), systems level (relevant brain areas where CCGs are active, melatonin and corticosteroid levels), and cellular level (core circadian genes and CCGs).
resultsFor the systematic review and meta-analysis, 1,513 studies were found, and 72 met the inclusion criteria; for the genetic analysis, we found 16 GWASs, 1 nonhuman primate study, and 16 imaging reviews. For cluster headache behavior, meta-analyses showed a circadian pattern of attacks in 70.5% (3,490/4,953) of participants across 16 studies, with a clear circadian peak between 21:00 and 03:00 and circannual peaks in spring and autumn. Chronotype was highly variable across studies. At the systems level, lower melatonin and higher cortisol levels were reported in cluster headache participants. At the cellular level, cluster headache was associated with core circadian genes DISCUSSION: Cluster headache and migraine are highly circadian at multiple levels, reinforcing the importance of the hypothalamus. This review provides a pathophysiologic foundation for circadian-targeted research into these disorders. TRIAL REGISTRATION INFORMATION: The study was registered with PROSPERO (registration number CRD42021234238).
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.