The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Age at onset of narcolepsy in two large populations of patients in France and Quebec
Abstract
BACKGROUND: Narcolepsy usually starts around adolescence; however, there is great variability in the clinical presentation of narcolepsy. OBJECTIVE: To determine the age at onset in conjunction with severity of narcoleptic symptoms in two large populations of narcoleptic patients with a similar genetic background. METHODS: Information on age at onset and severity of the condition was obtained in 317 patients with well-defined narcolepsy-cataplexy from Montpellier (France) and in 202 from Montreal (Canada). RESULTS: The mean age at onset was 23.4 years in Montpellier and 24.4 in Montreal. The age at onset was bimodal in two independent patient populations: a first peak occurring at 14.7 years, and a second peak occurring at 35. Age at onset clearly differentiates patients with a positive family history of narcolepsy (early onset) from those without a family history. Other clinical and polygraphic findings may indicate that young age at onset is associated with increased severity of the condition (higher frequency of cataplexy and decreased mean sleep latency on the Multiple Sleep Latency Test). CONCLUSION: Bimodal distribution of age at onset of narcolepsy was found in two independent patient populations. Our data suggest that age at onset is genetically determined.
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Cites
A New Method for Measuring Daytime Sleepiness: The Epworth Sleepiness Scale
Johns, M. W. (1991) · Sleep · doi:10.1093/sleep/14.6.540 · Cited by 17,364
Multivariate Density Estimation: Theory, Practice, and Visualization
Scott, D. W. (1992) · Wiley Series in Probability and Statistics · doi:10.1002/9780470316849 · Cited by 3,696
Narcolepsy in orexin Knockout Mice
Chemelli, R. M., Willie, J. T., Sinton, C. M., Elmquist, J. K., Scammell, T., Lee, C., Richardson, J. A., Williams, S. C., Xiong, Y., Kisanuki, Y., et al. (1999) · Cell · doi:10.1016/s0092-8674(00)81973-x · Cited by 3,095
Lin, L., Faraco, J., Li, R., Kadotani, H., Rogers, W., Lin, X., Qiu, X., de Jong, P. J., Nishino, S., & Mignot, E. (1999) · Cell · doi:10.1016/s0092-8674(00)81965-0 · Cited by 2,613
Peyron, C., Faraco, J., Rogers, W., Ripley, B., Overeem, S., Charnay, Y., Nevsimalova, S., Aldrich, M., Reynolds, D., Albin, R., et al. (2000) · Nature Medicine · doi:10.1038/79690 · Cited by 2,118
Reduced Number of Hypocretin Neurons in Human Narcolepsy
Thannickal, T. C., Moore, R. Y., Nienhuis, R., Ramanathan, L., Gulyani, S., Aldrich, M., Cornford, M., & Siegel, J. M. (2000) · Neuron · doi:10.1016/s0896-6273(00)00058-1 · Cited by 2,089
Hypocretin (orexin) deficiency in human narcolepsy
Nishino, S., Ripley, B., Overeem, S., Lammers, G. J., & Mignot, E. (2000) · The Lancet · doi:10.1016/s0140-6736(99)05582-8 · Cited by 1,776
Guidelines for the Multiple Sleep Latency Test (MSLT): A Standard Measure of Sleepiness
Carskadon, M. A. (1986) · Sleep · doi:10.1093/sleep/9.4.519 · Cited by 1,603
American Sleep Disorders Association
(2025) · Springer Reference Medizin · doi:10.1007/978-3-662-65186-5_300098 · Cited by 341
Crohn's disease: Influence of age at diagnosis on site and clinical type of disease
Polito, J., Childs, B., Mellits, E., Tokayer, A., Harris, M., & Bayless, T. (1996) · Gastroenterology · doi:10.1053/gast.1996.v111.pm8780560 · Cited by 340
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Gustavsson, A., Svensson, M., Jacobi, F., Allgulander, C., Alonso, J., Beghi, E., Dodel, R., Ekman, M., Faravelli, C., Fratiglioni, L., et al. (2011) · European Neuropsychopharmacology · doi:10.1016/j.euroneuro.2011.08.008 · Cited by 1,723
The Epidemiology of Narcolepsy
Longstreth, W. T., Koepsell, T. D., Ton, T. G., Hendrickson, A. F., & van Belle, G. (2007) · Sleep · doi:10.1093/sleep/30.1.13 · Cited by 447
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Cvetkovic-Lopes, V., Bayer, L., Dorsaz, S., Maret, S., Pradervand, S., Dauvilliers, Y., Lecendreux, M., Lammers, G.-J., Donjacour, C. E. H. M., Du Pasquier, R. A., et al. (2010) · Journal of Clinical Investigation · doi:10.1172/jci41366 · Cited by 307
Self-citationKornum, B. R., Knudsen, S., Ollila, H. M., Pizza, F., Jennum, P. J., Dauvilliers, Y., & Overeem, S. (2017) · Nature Reviews Disease Primers · doi:10.1038/nrdp.2016.100 · Cited by 285
Self-citationREM sleep characteristics in narcolepsy and REM sleep behavior disorder
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Metadata
- Authors
- Dauvilliers, Y., Montplaisir, J., Molinari, N., Carlander, B., Ondze, B., Besset, A., & Billiard, M.
- Venue
- Neurology
- Published
- 2001-12
- Volume
- 57
- Issue
- 11
- Pages
- 2029-2033
- ISSN
- 0028-3878 (ISSN-L)
- 1526-632X
- OpenAlex
- W2026849823
- Cited by
- 422
- References
- 22
- FWCI
- 2.17
- Type
- journal article
- Language
- en
- Open access
- closed
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