Skip to main content
Erschienen in: Sleep and Breathing 1/2019

05.09.2018 | Neurology • Original Article

HLA-DQB1*06:02 allele frequency and clinic-polysomnographic features in Saudi Arabian patients with narcolepsy

verfasst von: Saad M. Al Shareef, Eiman AlAnbay, Mujahed A. AlKhathlan, Zahid Shakoor, Mustafa Alnasser, Khalid D. Hamam, Adel S. Alharbi, Aljohara S. Almeneessier, Ahmed S. BaHammam

Erschienen in: Sleep and Breathing | Ausgabe 1/2019

Einloggen, um Zugang zu erhalten

Abstract

Background

Narcolepsy is an uncommon neurological disorder characterised by irresistible spells of sleep associated with abnormal rapid eye movement (REM) sleep. The association between narcolepsy and human leukocyte antigen HLA- DQB1*06:02 has been established elsewhere but remains to be investigated among Saudi Arabian patients with narcolepsy.

Methods

A total of 29 Saudi patients with type I or type 2 narcolepsy comprising of 23 (79%) males and 6 (21%) females with a mean age of 17.2 ± 9.6 years were included in this study. Type 1 or type 2 narcolepsy was diagnosed by full polysomnography followed by a multiple sleep latency test in accordance with International Classifications of Sleep Disorders-3 criteria. HLA typing for DQB1 alleles was performed by polymerase chain reaction and hybridization with sequence-specific oligonucleotide probes. Differences in clinical and sleep parameters were compared by univariable analyses. HLA-DQB1*06:02 frequency was systematically compared with the published literature.

Results

Type 1 narcolepsy was diagnosed in 19/29 (65.5%) patients, whereas 10/29 (34.5%) patients had type 2 narcolepsy. DQB1*06:02 was present in 25/29 (86.2%) patients; 15/19 (78.9%) narcolepsy type 1 patients and 10/10 (100%) narcolepsy type 2 patients harboured the DQB1*06:02 allele. REM latency was significantly lower in DQB1*06:02-positive patients compared to DQB1*06:02-negative patients (17.6 ± 32.3 min vs. 106.0 ± 86.0 min; p = 0.025). Epworth Sleepiness Scale scores were significantly higher among type 1 than type 2 narcolepsy patients (19.7 ± 3.2 vs 15.3 ± 3.6; p = 0.02).

Conclusions

DQB1*06:02 allele frequencies among Saudi patients with narcolepsy were consistent with previously published data.
Literatur
1.
Zurück zum Zitat Chabas D, Taheri S, Renier C, Mignot E (2003) The genetics of narcolepsy. Annu Rev Genomics Hum Genet 4:459–483CrossRefPubMed Chabas D, Taheri S, Renier C, Mignot E (2003) The genetics of narcolepsy. Annu Rev Genomics Hum Genet 4:459–483CrossRefPubMed
2.
Zurück zum Zitat Longstreth WT Jr, Koepsell TD, Ton TG, Hendrickson AF, van Belle G (2007) The epidemiology of narcolepsy. Sleep 30(1):13–26CrossRefPubMed Longstreth WT Jr, Koepsell TD, Ton TG, Hendrickson AF, van Belle G (2007) The epidemiology of narcolepsy. Sleep 30(1):13–26CrossRefPubMed
3.
Zurück zum Zitat Kryger MH, Walid R, Manfreda J (2002) Diagnoses received by narcolepsy patients in the year prior to diagnosis by a sleep specialist. Sleep 25(1):36–41CrossRefPubMed Kryger MH, Walid R, Manfreda J (2002) Diagnoses received by narcolepsy patients in the year prior to diagnosis by a sleep specialist. Sleep 25(1):36–41CrossRefPubMed
4.
Zurück zum Zitat Bahammam AS, Alenezi AM (2006) Narcolepsy in Saudi Arabia. Demographic and clinical perspective of an under-recognized disorder. Neurosciences (Riyadh) 11(4):302–307 Bahammam AS, Alenezi AM (2006) Narcolepsy in Saudi Arabia. Demographic and clinical perspective of an under-recognized disorder. Neurosciences (Riyadh) 11(4):302–307
5.
Zurück zum Zitat Mignot E (1998) Genetic and familial aspects of narcolepsy. Neurology 50(2 Suppl 1):S16–S22CrossRefPubMed Mignot E (1998) Genetic and familial aspects of narcolepsy. Neurology 50(2 Suppl 1):S16–S22CrossRefPubMed
6.
Zurück zum Zitat Nishino S, Ripley B, Overeem S, Lammers GJ, Mignot E (2000) Hypocretin (orexin) deficiency in human narcolepsy. Lancet 355(9197):39–40CrossRefPubMed Nishino S, Ripley B, Overeem S, Lammers GJ, Mignot E (2000) Hypocretin (orexin) deficiency in human narcolepsy. Lancet 355(9197):39–40CrossRefPubMed
7.
Zurück zum Zitat Peyron C, Faraco J, Rogers W, Ripley B, Overeem S, Charnay Y, Nevsimalova S, Aldrich M, Reynolds D, Albin R, Li R, Hungs M, Pedrazzoli M, Padigaru M, Kucherlapati M, Fan J, Maki R, Lammers GJ, Bouras C, Kucherlapati R, Nishino S, Mignot E (2000) A mutation in a case of early onset narcolepsy and a generalized absence of hypocretin peptides in human narcoleptic brains. Nat Med 6(9):991–997CrossRefPubMed Peyron C, Faraco J, Rogers W, Ripley B, Overeem S, Charnay Y, Nevsimalova S, Aldrich M, Reynolds D, Albin R, Li R, Hungs M, Pedrazzoli M, Padigaru M, Kucherlapati M, Fan J, Maki R, Lammers GJ, Bouras C, Kucherlapati R, Nishino S, Mignot E (2000) A mutation in a case of early onset narcolepsy and a generalized absence of hypocretin peptides in human narcoleptic brains. Nat Med 6(9):991–997CrossRefPubMed
8.
Zurück zum Zitat Juji T, Satake M, Honda Y, Doi Y (1984) HLA antigens in Japanese patients with narcolepsy. All the patients were DR2 positive. Tissue Antigens 24(5):316–319CrossRefPubMed Juji T, Satake M, Honda Y, Doi Y (1984) HLA antigens in Japanese patients with narcolepsy. All the patients were DR2 positive. Tissue Antigens 24(5):316–319CrossRefPubMed
9.
Zurück zum Zitat Mignot E, Hayduk R, Black J, Grumet FC, Guilleminault C (1997) HLA DQB1*0602 is associated with cataplexy in 509 narcoleptic patients. Sleep 20(11):1012–1020PubMed Mignot E, Hayduk R, Black J, Grumet FC, Guilleminault C (1997) HLA DQB1*0602 is associated with cataplexy in 509 narcoleptic patients. Sleep 20(11):1012–1020PubMed
10.
Zurück zum Zitat Mignot E, Lin X, Hesla PE, Dement WC, Guilleminault C, Grumet FC (1993) A novel HLA DR17,DQ1 (DQA1-0102/DQB1-0602 positive) haplotype predisposing to narcolepsy in Caucasians. Sleep 16(8):764–765CrossRefPubMed Mignot E, Lin X, Hesla PE, Dement WC, Guilleminault C, Grumet FC (1993) A novel HLA DR17,DQ1 (DQA1-0102/DQB1-0602 positive) haplotype predisposing to narcolepsy in Caucasians. Sleep 16(8):764–765CrossRefPubMed
11.
Zurück zum Zitat Cvetkovic-Lopes V, Bayer L, Dorsaz S, Maret S, Pradervand S, Dauvilliers Y, Lecendreux M, Lammers GJ, Donjacour CE, Du Pasquier RA, Pfister C, Petit B, Hor H, Muhlethaler M, Tafti M (2010) Elevated tribbles homolog 2-specific antibody levels in narcolepsy patients. J Clin Invest 120(3):713–719CrossRefPubMedPubMedCentral Cvetkovic-Lopes V, Bayer L, Dorsaz S, Maret S, Pradervand S, Dauvilliers Y, Lecendreux M, Lammers GJ, Donjacour CE, Du Pasquier RA, Pfister C, Petit B, Hor H, Muhlethaler M, Tafti M (2010) Elevated tribbles homolog 2-specific antibody levels in narcolepsy patients. J Clin Invest 120(3):713–719CrossRefPubMedPubMedCentral
12.
Zurück zum Zitat Kawashima M, Lin L, Tanaka S, Jennum P, Knudsen S, Nevsimalova S, Plazzi G, Mignot E (2010) Anti-tribbles homolog 2 (TRIB2) autoantibodies in narcolepsy are associated with recent onset of cataplexy. Sleep 33(7):869–874CrossRefPubMedPubMedCentral Kawashima M, Lin L, Tanaka S, Jennum P, Knudsen S, Nevsimalova S, Plazzi G, Mignot E (2010) Anti-tribbles homolog 2 (TRIB2) autoantibodies in narcolepsy are associated with recent onset of cataplexy. Sleep 33(7):869–874CrossRefPubMedPubMedCentral
14.
Zurück zum Zitat Toyoda H, Tanaka S, Miyagawa T, Honda Y, Tokunaga K, Honda M (2010) Anti-tribbles homolog 2 autoantibodies in Japanese patients with narcolepsy. Sleep 33(7):875–878CrossRefPubMedPubMedCentral Toyoda H, Tanaka S, Miyagawa T, Honda Y, Tokunaga K, Honda M (2010) Anti-tribbles homolog 2 autoantibodies in Japanese patients with narcolepsy. Sleep 33(7):875–878CrossRefPubMedPubMedCentral
15.
Zurück zum Zitat AASM (2014) American Academy of Sleep Medicine (AASM). International classification of sleep disorders (ICSD), 3rd ed. Darien, IL: AASM AASM (2014) American Academy of Sleep Medicine (AASM). International classification of sleep disorders (ICSD), 3rd ed. Darien, IL: AASM
16.
Zurück zum Zitat Johns MW (1991) A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep 14(6):540–545CrossRefPubMed Johns MW (1991) A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep 14(6):540–545CrossRefPubMed
17.
Zurück zum Zitat Bahammam AS, Almushailhi K, Pandi-Perumal SR, Sharif MM (2014) Intermittent fasting during Ramadan: does it affect sleep? J Sleep Res 23(1):35–43CrossRefPubMed Bahammam AS, Almushailhi K, Pandi-Perumal SR, Sharif MM (2014) Intermittent fasting during Ramadan: does it affect sleep? J Sleep Res 23(1):35–43CrossRefPubMed
18.
Zurück zum Zitat Qasrawi SQ, Albarrak AM, Alharbi AS, Nashwan S, Almeneessier AS, Pandi-Perumal SR, Alsaadi MM, BaHammam AS (2017) Narcolepsy in Saudi patients before and after the 2009 H1N1 vaccination. The experience of 2 referral centers. Saudi Med J 38(12):1196–1200CrossRefPubMedPubMedCentral Qasrawi SQ, Albarrak AM, Alharbi AS, Nashwan S, Almeneessier AS, Pandi-Perumal SR, Alsaadi MM, BaHammam AS (2017) Narcolepsy in Saudi patients before and after the 2009 H1N1 vaccination. The experience of 2 referral centers. Saudi Med J 38(12):1196–1200CrossRefPubMedPubMedCentral
19.
Zurück zum Zitat EEG arousals: scoring rules and examples (1992) A preliminary report from the sleep disorders atlas task force of the American sleep disorders association. Sleep 15(2):173–184CrossRef EEG arousals: scoring rules and examples (1992) A preliminary report from the sleep disorders atlas task force of the American sleep disorders association. Sleep 15(2):173–184CrossRef
20.
Zurück zum Zitat Berry RB, Brooks R, Gamaldo C, Harding SM, Lloyd RM, Quan SF, Troester MT, Vaughn BV (2017) AASM scoring manual updates for 2017 (version 2.4). J Clin Sleep Med 13(5):665–666CrossRefPubMedPubMedCentral Berry RB, Brooks R, Gamaldo C, Harding SM, Lloyd RM, Quan SF, Troester MT, Vaughn BV (2017) AASM scoring manual updates for 2017 (version 2.4). J Clin Sleep Med 13(5):665–666CrossRefPubMedPubMedCentral
21.
Zurück zum Zitat Alaez C, Lin L, Flores AH, Vazquez M, Munguia A, Mignot E, Haro R, Baker H, Gorodezky C (2008) Association of narcolepsy-cataplexy with HLA-DRB1 and DQB1 in Mexican patients: a relationship between HLA and gender is suggested. BMC Medical Genetics 9:79CrossRefPubMedPubMedCentral Alaez C, Lin L, Flores AH, Vazquez M, Munguia A, Mignot E, Haro R, Baker H, Gorodezky C (2008) Association of narcolepsy-cataplexy with HLA-DRB1 and DQB1 in Mexican patients: a relationship between HLA and gender is suggested. BMC Medical Genetics 9:79CrossRefPubMedPubMedCentral
22.
Zurück zum Zitat Chen YH, Huang YS, Chien WH, Chen CH (2013) Association analysis of the major histocompatibility complex, class II, DQ beta1 gene, HLA-DQB1, with narcolepsy in Han Chinese patients from Taiwan. Sleep Med 14(12):1393–1397CrossRefPubMed Chen YH, Huang YS, Chien WH, Chen CH (2013) Association analysis of the major histocompatibility complex, class II, DQ beta1 gene, HLA-DQB1, with narcolepsy in Han Chinese patients from Taiwan. Sleep Med 14(12):1393–1397CrossRefPubMed
23.
Zurück zum Zitat Coelho FM, Pradella-Hallinan M, Pedrazzoli M, Soares CA, Fernandes GB, Goncalves AL, Tufik S, Bittencourt LR (2010) Traditional biomarkers in narcolepsy: experience of a Brazilian sleep Centre. Arq Neuropsiquiatr 68(5):712–715CrossRefPubMed Coelho FM, Pradella-Hallinan M, Pedrazzoli M, Soares CA, Fernandes GB, Goncalves AL, Tufik S, Bittencourt LR (2010) Traditional biomarkers in narcolepsy: experience of a Brazilian sleep Centre. Arq Neuropsiquiatr 68(5):712–715CrossRefPubMed
24.
Zurück zum Zitat Dolenc-Grosel L, Vodusek DB (2002) The importance of HLA DQB1*0602 typing in Slovene patients with narcolepsy. Cellular Molecular Biology Letters 7(2):359–360PubMed Dolenc-Grosel L, Vodusek DB (2002) The importance of HLA DQB1*0602 typing in Slovene patients with narcolepsy. Cellular Molecular Biology Letters 7(2):359–360PubMed
25.
Zurück zum Zitat Geremew D, Rahimi-Golkhandan A, Sadeghniiat-Haghighi K, Shakiba Y, Khajeh-Mehrizi A, Ansaripour B, Izad M (2017) Association study of HLA-DQB1*0602 allele in Iranian patients with narcolepsy. Iranian J Allergy, Asthma, Immunology 16(5):452–456 Geremew D, Rahimi-Golkhandan A, Sadeghniiat-Haghighi K, Shakiba Y, Khajeh-Mehrizi A, Ansaripour B, Izad M (2017) Association study of HLA-DQB1*0602 allele in Iranian patients with narcolepsy. Iranian J Allergy, Asthma, Immunology 16(5):452–456
26.
Zurück zum Zitat Han F, Lin L, Schormair B, Pizza F, Plazzi G, Ollila HM, Nevsimalova S, Jennum P, Knudsen S, Winkelmann J, Coquillard C, Babrzadeh F, Strom TM, Wang C, Mindrinos M, Fernandez Vina M, Mignot E (2014) HLA DQB1*06:02 negative narcolepsy with hypocretin/orexin deficiency. Sleep 37(10):1601–1608CrossRefPubMedPubMedCentral Han F, Lin L, Schormair B, Pizza F, Plazzi G, Ollila HM, Nevsimalova S, Jennum P, Knudsen S, Winkelmann J, Coquillard C, Babrzadeh F, Strom TM, Wang C, Mindrinos M, Fernandez Vina M, Mignot E (2014) HLA DQB1*06:02 negative narcolepsy with hypocretin/orexin deficiency. Sleep 37(10):1601–1608CrossRefPubMedPubMedCentral
27.
Zurück zum Zitat Hong SC, Leen K, Park SA, Han JH, Lee SP, Lin L, Okun M, Nishino S, Mignot E (2002) HLA and hypocretin studies in Korean patients with narcolepsy. Sleep 25(4):440–444CrossRefPubMed Hong SC, Leen K, Park SA, Han JH, Lee SP, Lin L, Okun M, Nishino S, Mignot E (2002) HLA and hypocretin studies in Korean patients with narcolepsy. Sleep 25(4):440–444CrossRefPubMed
28.
Zurück zum Zitat Hong SC, Lin L, Lo B, Jeong JH, Shin YK, Kim SY, Kweon Y, Zhang J, Einen M, Smith A, Hansen J, Grumet FC, Mignot E (2007) DQB1*0301 and DQB1*0601 modulate narcolepsy susceptibility in Koreans. Hum Immunol 68(1):59–68CrossRefPubMed Hong SC, Lin L, Lo B, Jeong JH, Shin YK, Kim SY, Kweon Y, Zhang J, Einen M, Smith A, Hansen J, Grumet FC, Mignot E (2007) DQB1*0301 and DQB1*0601 modulate narcolepsy susceptibility in Koreans. Hum Immunol 68(1):59–68CrossRefPubMed
29.
Zurück zum Zitat Miyagawa T, Toyoda H, Hirataka A, Kanbayashi T, Imanishi A, Sagawa Y, Kotorii N, Kotorii T, Hashizume Y, Ogi K, Hiejima H, Kamei Y, Hida A, Miyamoto M, Imai M, Fujimura Y, Tamura Y, Ikegami A, Wada Y, Moriya S, Furuya H, Kato M, Omata N, Kojima H, Kashiwase K, Saji H, Khor SS, Yamasaki M, Wada Y, Ishigooka J, Kuroda K, Kume K, Chiba S, Yamada N, Okawa M, Hirata K, Uchimura N, Shimizu T, Inoue Y, Honda Y, Mishima K, Honda M, Tokunaga K (2015) New susceptibility variants to narcolepsy identified in HLA class II region. Hum Mol Genet 24(3):891–898CrossRefPubMed Miyagawa T, Toyoda H, Hirataka A, Kanbayashi T, Imanishi A, Sagawa Y, Kotorii N, Kotorii T, Hashizume Y, Ogi K, Hiejima H, Kamei Y, Hida A, Miyamoto M, Imai M, Fujimura Y, Tamura Y, Ikegami A, Wada Y, Moriya S, Furuya H, Kato M, Omata N, Kojima H, Kashiwase K, Saji H, Khor SS, Yamasaki M, Wada Y, Ishigooka J, Kuroda K, Kume K, Chiba S, Yamada N, Okawa M, Hirata K, Uchimura N, Shimizu T, Inoue Y, Honda Y, Mishima K, Honda M, Tokunaga K (2015) New susceptibility variants to narcolepsy identified in HLA class II region. Hum Mol Genet 24(3):891–898CrossRefPubMed
30.
Zurück zum Zitat Pelin Z, Guilleminault C, Risch N, Grumet FC, Mignot E (1998) HLA-DQB1*0602 homozygosity increases relative risk for narcolepsy but not disease severity in two ethnic groups. US Modafinil in narcolepsy multicenter study group. Tissue Antigens 51(1):96–100CrossRefPubMed Pelin Z, Guilleminault C, Risch N, Grumet FC, Mignot E (1998) HLA-DQB1*0602 homozygosity increases relative risk for narcolepsy but not disease severity in two ethnic groups. US Modafinil in narcolepsy multicenter study group. Tissue Antigens 51(1):96–100CrossRefPubMed
31.
Zurück zum Zitat Rogers AE, Meehan J, Guilleminault C, Grumet FC, Mignot E (1997) HLA DR15 (DR2) and DQB1*0602 typing studies in 188 narcoleptic patients with cataplexy. Neurology 48(6):1550–1556CrossRefPubMed Rogers AE, Meehan J, Guilleminault C, Grumet FC, Mignot E (1997) HLA DR15 (DR2) and DQB1*0602 typing studies in 188 narcoleptic patients with cataplexy. Neurology 48(6):1550–1556CrossRefPubMed
32.
Zurück zum Zitat Vrana M, Siffnerova V, Pecherkova P, Ratajova E, Sonka K (2016) Distribution of HLA-DQB1 in Czech patients with central Hypersomnias. Arch Immunol Ther Exp 64(Suppl 1):89–98CrossRef Vrana M, Siffnerova V, Pecherkova P, Ratajova E, Sonka K (2016) Distribution of HLA-DQB1 in Czech patients with central Hypersomnias. Arch Immunol Ther Exp 64(Suppl 1):89–98CrossRef
33.
Zurück zum Zitat Wing YK, Chen L, Fong SY, Ng MH, Ho CK, Cheng SH, Tang NL, Li AM (2008) Narcolepsy in southern Chinese patients: clinical characteristics, HLA typing and seasonality of birth. J Neurol Neurosurg Psychiatry 79(11):1262–1267CrossRefPubMed Wing YK, Chen L, Fong SY, Ng MH, Ho CK, Cheng SH, Tang NL, Li AM (2008) Narcolepsy in southern Chinese patients: clinical characteristics, HLA typing and seasonality of birth. J Neurol Neurosurg Psychiatry 79(11):1262–1267CrossRefPubMed
34.
Zurück zum Zitat Han F, Lin L, Li J, Aran A, Dong SX, An P, Zhao L, Li M, Li QY, Yan H, Wang JS, Gao HY, Gao ZC, Strohl KP, Mignot E (2011) Presentations of primary hypersomnia in Chinese children. Sleep 34(5):627–632CrossRefPubMedPubMedCentral Han F, Lin L, Li J, Aran A, Dong SX, An P, Zhao L, Li M, Li QY, Yan H, Wang JS, Gao HY, Gao ZC, Strohl KP, Mignot E (2011) Presentations of primary hypersomnia in Chinese children. Sleep 34(5):627–632CrossRefPubMedPubMedCentral
35.
Zurück zum Zitat Bruck D, Costa A (2003) The natural history of health and symptoms in narcolepsy: a 10 year longitudinal study. Australian J Primary Health 9:59–67CrossRef Bruck D, Costa A (2003) The natural history of health and symptoms in narcolepsy: a 10 year longitudinal study. Australian J Primary Health 9:59–67CrossRef
36.
Zurück zum Zitat Hong SC, Hayduk R, Lim J, Mignot E (2000) Clinical and polysomnographic features in DQB1*0602 positive and negative narcolepsy patients: results from the modafinil clinical trial. Sleep Med 1(1):33–39CrossRefPubMed Hong SC, Hayduk R, Lim J, Mignot E (2000) Clinical and polysomnographic features in DQB1*0602 positive and negative narcolepsy patients: results from the modafinil clinical trial. Sleep Med 1(1):33–39CrossRefPubMed
37.
Zurück zum Zitat Mignot E, Young T, Lin L, Finn L (1999) Nocturnal sleep and daytime sleepiness in normal subjects with HLA-DQB1*0602. Sleep 22(3):347–352PubMed Mignot E, Young T, Lin L, Finn L (1999) Nocturnal sleep and daytime sleepiness in normal subjects with HLA-DQB1*0602. Sleep 22(3):347–352PubMed
38.
Zurück zum Zitat Watson NF, Ton TG, Koepsell TD, Gersuk VH, Longstreth WT Jr (2010) Does narcolepsy symptom severity vary according to HLA-DQB1*0602 allele status? Sleep 33(1):29–35CrossRefPubMedPubMedCentral Watson NF, Ton TG, Koepsell TD, Gersuk VH, Longstreth WT Jr (2010) Does narcolepsy symptom severity vary according to HLA-DQB1*0602 allele status? Sleep 33(1):29–35CrossRefPubMedPubMedCentral
39.
Zurück zum Zitat Harsh J, Peszka J, Hartwig G, Mitler M (2000) Night-time sleep and daytime sleepiness in narcolepsy. J Sleep Res 9(3):309–316CrossRefPubMed Harsh J, Peszka J, Hartwig G, Mitler M (2000) Night-time sleep and daytime sleepiness in narcolepsy. J Sleep Res 9(3):309–316CrossRefPubMed
40.
Zurück zum Zitat Jeong JH, Hong SC, Shin YK, Han JH, Lee SP (2007) HLA-DQB1 allele and hypocretin in Korean narcoleptics with cataplexy. J Korean Med Sci 22(1):127–131CrossRefPubMedPubMedCentral Jeong JH, Hong SC, Shin YK, Han JH, Lee SP (2007) HLA-DQB1 allele and hypocretin in Korean narcoleptics with cataplexy. J Korean Med Sci 22(1):127–131CrossRefPubMedPubMedCentral
41.
Zurück zum Zitat Coelho FM, Pradella-Hallinan M, Predazzoli Neto M, Bittencourt LR, Tufik S (2009) Prevalence of the HLA-DQB1*0602 allele in narcolepsy and idiopathic hypersomnia patients seen at a sleep disorders outpatient unit in Sao Paulo. Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) 31(1):10–14CrossRef Coelho FM, Pradella-Hallinan M, Predazzoli Neto M, Bittencourt LR, Tufik S (2009) Prevalence of the HLA-DQB1*0602 allele in narcolepsy and idiopathic hypersomnia patients seen at a sleep disorders outpatient unit in Sao Paulo. Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) 31(1):10–14CrossRef
Metadaten
Titel
HLA-DQB1*06:02 allele frequency and clinic-polysomnographic features in Saudi Arabian patients with narcolepsy
verfasst von
Saad M. Al Shareef
Eiman AlAnbay
Mujahed A. AlKhathlan
Zahid Shakoor
Mustafa Alnasser
Khalid D. Hamam
Adel S. Alharbi
Aljohara S. Almeneessier
Ahmed S. BaHammam
Publikationsdatum
05.09.2018
Verlag
Springer International Publishing
Erschienen in
Sleep and Breathing / Ausgabe 1/2019
Print ISSN: 1520-9512
Elektronische ISSN: 1522-1709
DOI
https://doi.org/10.1007/s11325-018-1717-4

Weitere Artikel der Ausgabe 1/2019

Sleep and Breathing 1/2019 Zur Ausgabe

Leitlinien kompakt für die Innere Medizin

Mit medbee Pocketcards sicher entscheiden.

Seit 2022 gehört die medbee GmbH zum Springer Medizin Verlag

RAS-Blocker bei Hyperkaliämie möglichst nicht sofort absetzen

14.05.2024 Hyperkaliämie Nachrichten

Bei ausgeprägter Nierenfunktionsstörung steigen unter der Einnahme von Renin-Angiotensin-System(RAS)-Hemmstoffen nicht selten die Serumkaliumspiegel. Was in diesem Fall zu tun ist, erklärte Prof. Jürgen Floege beim diesjährigen Allgemeinmedizin-Update-Seminar.

Gestationsdiabetes: In der zweiten Schwangerschaft folgenreicher als in der ersten

13.05.2024 Gestationsdiabetes Nachrichten

Das Risiko, nach einem Gestationsdiabetes einen Typ-2-Diabetes zu entwickeln, hängt nicht nur von der Zahl, sondern auch von der Reihenfolge der betroffenen Schwangerschaften ab.

Labor, CT-Anthropometrie zeigen Risiko für Pankreaskrebs

13.05.2024 Pankreaskarzinom Nachrichten

Gerade bei aggressiven Malignomen wie dem duktalen Adenokarzinom des Pankreas könnte Früherkennung die Therapiechancen verbessern. Noch jedoch klafft hier eine Lücke. Ein Studienteam hat einen Weg gesucht, sie zu schließen.

Battle of Experts: Sport vs. Spritze bei Adipositas und Typ-2-Diabetes

11.05.2024 DDG-Jahrestagung 2024 Kongressbericht

Im Battle of Experts traten zwei Experten auf dem Diabeteskongress gegeneinander an: Die eine vertrat die Auffassung „Sport statt Spritze“ bei Adipositas und Typ-2-Diabetes, der andere forderte „Spritze statt Sport!“ Am Ende waren sie sich aber einig: Die Kombination aus beidem erzielt die besten Ergebnisse.

Update Innere Medizin

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.