ORPHA:164736
Familial advanced sleep-phase syndrome
Also known as: FASPS
Publications
431
79.1th percentile
Trials
0
Interventional, condition-specific
Researchers
1,010
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare genetic neurological disorder characterized by very early sleep onset and offset. Plasma melatonin levels and body core temperature rhythms are also phase-advanced. The sleep-wake cycle is generally shortened. Additional reported features include migraine with or without aura and seasonal affective disorder.
How rare: How common this is has not been clearly measured.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0015609
- UMLS:C1858496
Additional Mondo synonyms (1)
familial advanced sleep-phase syndrome
Research stages
Trial readiness signals
Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”
1/6 stages with a signal
Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
431 matched papers (205 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- Interventional trialNot found
No matched interventional trial under our ClinicalTrials.gov rules
Biology
Genes and phenotypes
Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.
Do we know what causes it?
Not yet — the cause hasn't been pinned down in GenCC.
No strong gene–disease assertion joined for this Orphanet entity.
Phenotypes (Monarch / HPO)
Not enriched in this build — Monarch phenotype joins were not run for this record.
Animal models (Monarch / Alliance)
Not enriched in this build.
Literature
Is anyone studying this?
431
431 papers have ever been published on this condition (under this name). For scale, breast cancer has over 700,000. Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.
431 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).
205 in the last 10 years · high confidence · 79.1th percentile (publications denominator)
Phrase hits: 431 · MeSH hits: 0
Who's working on it?
1,010
Distinct author names in 200 sampled papers — named people below.
Who's working on it?
No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.
- 01Fu YH11 papers · 2019
Kavli Institute for Fundamental Neuroscience, Weill Institute of Neuroscience, Department of Neurology, University of California San Francisco, San Francisco, CA 94143, United States. Electronic address: ying-hui.fu@ucsf.edu.
Papers in Europe PMC - 02Zhang Y9 papers · 2026
College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China.
Papers in Europe PMC - 03Jones CR8 papers · 2019
University of Utah, Department of Neurology, Salt Lake City, UT, USA.
Papers in Europe PMC - 04Herzel H6 papers · 2026
Institute for Theoretical Biology, Humboldt University, Invalidenstrasse, 10115 Berlin, Germany. h.herzel@biologie.hu-berlin.de
Papers in Europe PMC - 05Takahashi JS6 papers · 2023
Howard Hughes Medical Institute, Northwestern University, Evanston, Illinois 60208-3520, USA. j-takahashi@northwestern.edu
Papers in Europe PMC - 06Xu Y6 papers · 2017
Department of Neurology, University of California, San Francisco, San Francisco, CA 94158, USA.
Papers in Europe PMC - 07Chiu JC5 papers · 2023
Department of Entomology and Nematology, University of California, Davis, Davis, CA 95616, USA.
Papers in Europe PMC - 08Lee C5 papers · 2023
Department of Biomedical Sciences, Florida State University, Tallahassee, FL 32306, USA.
Papers in Europe PMC - 09Lee K5 papers · 2023
Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, FL 32306, USA.
Papers in Europe PMC - 10Wang Y5 papers · 2026
College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China.
Papers in Europe PMC
Clinical research
Is a treatment being tested?
0
interventional trials for this specific condition
No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present).
Data as of 27 July 2026
No matched interventional trials. This is true for 73% of diseases in the trials denominator (5114 of 7003). Here are the researchers publishing on it.
high confidence · 36.5th percentile (trials denominator)
Recruiting interventional trials
From the matched ClinicalTrials.gov set
No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.
See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
Where to find support
We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:
India — NPRD
Last verified 2026-07-26This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.
Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.
How we counted this
Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.
"Familial advanced sleep-phase syndrome" OR "FASPS"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Familial advanced sleep-phase syndrome" OR "FASPS"
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Query health: ok — strategies attempted: phrase; with hits: phrase
Run this search on ClinicalTrials.gov
Confidence reasoning
- Preferred label is multi-word and distinctive
- No synonyms dropped by stoplist
- No label/synonym collisions with other diseases in this corpus
Ingested 2026-07-27T08:16:52.230Z