Ann Dermatol.  2018 Jun;30(3):276-283. 10.5021/ad.2018.30.3.276.

Association of CDKAL1 Polymorphisms with Early-Onset Atopic Dermatitis in Koreans

Affiliations
  • 1Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea. drseo@cau.ac.kr
  • 2Department of Laboratory Medicine, Chung-Ang University Hospital, Seoul, Korea.
  • 3Department of Ophthalmology, Chung-Ang University Hospital, Seoul, Korea.

Abstract

BACKGROUND
Atopic dermatitis (AD) has increased in frequency to rates as high as 20% for children in developed countries. AD is one of the most common childhood diseases and has a complex etiology involving genetic and environmental factors. Thus, a broad understanding of genetic background is needed for early diagnosis of AD.
OBJECTIVE
Identification of candidate functional genetic variants associated with early-onset AD in Koreans.
METHODS
Whole-exome sequencing (WES) was performed in three families. Sanger sequencing was used to validate detected variants in 112 AD patients and 61 controls.
RESULTS
Functional variants were filtered by WES, and then variants related to allergic immune diseases were selected through a literature search. Two candidate non-synonymous single-nucleotide polymorphisms of CDKAL1 (rs77152992) and ERBB2 (rs1058808) were identified, c.1226C>T, p.Pro409Leu, c.3463C>G, and p. Pro1170Ala respectively. A case-control study was performed to determine whether rs77152992 and rs1058808 are candidate risk factors for early-onset AD. rs77152992 was significantly associated with early-onset AD (odds ratio [OR], 0.42; 95% confidence interval [CI], 0.21~0.83; p=0.0133) in allele frequencies. The CC genotype of CDKAL1 had significantly increased risk of AD (OR, 2.16; 95% CI, 1.0~4.6; p=0.0475). rs1058808 had no correlation with AD. Total eosinophil count was significantly increased in AD patients with the CC genotype of CDKAL1 (rs77152992).
CONCLUSION
CDKAL1 (rs77152992) and ERBB2 (rs1058808) were deemed functionally interesting based on WES. Our case-control study suggests that the CC genotype of rs77152992 may be associated with increased eosinophil counts. It may enhance the risk of early-onset AD.

Keyword

Atopic dermatitis; CDKAL1; ERBB2; Whole exome sequencing

MeSH Terms

Case-Control Studies
Child
Dermatitis, Atopic*
Developed Countries
Early Diagnosis
Eosinophils
Gene Frequency
Genetic Background
Genotype
Humans
Immune System Diseases
Risk Factors

Figure

  • Fig. 1 The relationship of the CDKAL1 polymorphism with total immunoglobulin E (IgE) and eosinophil counts in atopic dermatitis patients. Dot-plot graphs showing concentrations of total IgE levels (A) and eosinophil counts (B) for the CC and TT+CT genotypes. Data are shown as mean±standard deviation. NS: not significant. *p<0.05 by Mann-Whitney U-test for statistical significance.


Reference

1. Uehara M, Kimura C. Descendant family history of atopic dermatitis. Acta Derm Venereol. 1993; 73:62–63. PMID: 8095756.
2. Kryukov GV, Pennacchio LA, Sunyaev SR. Most rare missense alleles are deleterious in humans: implications for complex disease and association studies. Am J Hum Genet. 2007; 80:727–739. PMID: 17357078.
Article
3. Nutten S. Atopic dermatitis: global epidemiology and risk factors. Ann Nutr Metab. 2015; 66(Suppl 1):8–16. PMID: 25925336.
Article
4. Li K, Oh WJ, Park KY, Kim KH, Seo SJ. FLG mutations in the East Asian atopic dermatitis patients: genetic and clinical implication. Exp Dermatol. 2016; 25:816–818. PMID: 27120251.
5. Irvine AD, McLean WH, Leung DY. Filaggrin mutations associated with skin and allergic diseases. N Engl J Med. 2011; 365:1315–1327. PMID: 21991953.
Article
6. Rabbani B, Tekin M, Mahdieh N. The promise of whole-exome sequencing in medical genetics. J Hum Genet. 2014; 59:5–15. PMID: 24196381.
Article
7. Pabinger S, Dander A, Fischer M, Snajder R, Sperk M, Efremova M, et al. A survey of tools for variant analysis of next-generation genome sequencing data. Brief Bioinform. 2014; 15:256–278. PMID: 23341494.
Article
8. Thomas PD, Kejariwal A. Coding single-nucleotide polymorphisms associated with complex vs. Mendelian disease: evolutionary evidence for differences in molecular effects. Proc Natl Acad Sci U S A. 2004; 101:15398–15403. PMID: 15492219.
Article
9. Li H, Durbin R. Fast and accurate short read alignment with Burrows-Wheeler transform. Bioinformatics. 2009; 25:1754–1760. PMID: 19451168.
Article
10. DePristo MA, Banks E, Poplin R, Garimella KV, Maguire JR, Hartl C, et al. A framework for variation discovery and genotyping using next-generation DNA sequencing data. Nat Genet. 2011; 43:491–498. PMID: 21478889.
Article
11. Cibulskis K, Lawrence MS, Carter SL, Sivachenko A, Jaffe D, Sougnez C, et al. Sensitive detection of somatic point mutations in impure and heterogeneous cancer samples. Nat Biotechnol. 2013; 31:213–219. PMID: 23396013.
Article
12. Garmhausen D, Hagemann T, Bieber T, Dimitriou I, Fimmers R, Diepgen T, et al. Characterization of different courses of atopic dermatitis in adolescent and adult patients. Allergy. 2013; 68:498–506. PMID: 23452057.
Article
13. Bin L, Leung DY. Genetic and epigenetic studies of atopic dermatitis. Allergy Asthma Clin Immunol. 2016; 12:52. PMID: 27777593.
Article
14. Kazma R, Bailey JN. Population-based and family-based designs to analyze rare variants in complex diseases. Genet Epidemiol. 2011; 35(Suppl 1):S41–S47. PMID: 22128057.
Article
15. Gibson G. Rare and common variants: twenty arguments. Nat Rev Genet. 2012; 13:135–145. PMID: 22251874.
Article
16. Quaranta M, Burden AD, Griffiths CE, Worthington J, Barker JN, Trembath RC, et al. Differential contribution of CDKAL1 variants to psoriasis, Crohn's disease and type II diabetes. Genes Immun. 2009; 10:654–658. PMID: 19587699.
Article
17. Coto-Segura P, Batalla A, González-Fernández D, Gómez J, Santos-Juanes J, Queiro R, et al. CDKAL1 gene variants affect the anti-TNF response among Psoriasis patients. Int Immunopharmacol. 2015; 29:947–949. PMID: 26563541.
Article
18. Miyagaki T, Sugaya M. Recent advances in atopic dermatitis and psoriasis: genetic background, barrier function, and therapeutic targets. J Dermatol Sci. 2015; 78:89–94. PMID: 25771165.
Article
19. Siepel A, Bejerano G, Pedersen JS, Hinrichs AS, Hou M, Rosenbloom K, et al. Evolutionarily conserved elements in vertebrate, insect, worm, and yeast genomes. Genome Res. 2005; 15:1034–1050. PMID: 16024819.
Article
20. Ladinsky HT, Elizalde A, Schickler R, Dees PB, Crenshaw ML, Sleasman JW. Hypereosinophilic syndrome and hemimelia in a patient with chromosome 6p22.3 deletion. Pediatr Allergy Immunol. 2014; 25:500–503. PMID: 24628666.
Article
21. Jenerowicz D, Czarnecka-Operacz M, Silny W. Peripheral blood eosinophilia in atopic dermatitis. Acta Dermatovenerol Alp Pannonica Adriat. 2007; 16:47–52. PMID: 17992457.
22. Ott H, Stanzel S, Ocklenburg C, Merk HF, Baron JM, Lehmann S. Total serum IgE as a parameter to differentiate between intrinsic and extrinsic atopic dermatitis in children. Acta Derm Venereol. 2009; 89:257–261. PMID: 19479121.
Article
23. Song GG, Lee YH. Pathway analysis of genome-wide association study on asthma. Hum Immunol. 2013; 74:256–260. PMID: 23200760.
Article
24. Sääf A, Pivarcsi A, Winge MC, Wahlgren CF, Homey B, Nordenskjöld M, et al. Characterization of EGFR and ErbB2 expression in atopic dermatitis patients. Arch Dermatol Res. 2012; 304:773–780. PMID: 22552355.
Article
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