Walsh, K.M.* ; Whitehead, T.P.* ; de Smith, A.J.* ; Smirnov, I.V.* ; Park, M.* ; Endicott, A.A.* ; Francis, S.S.* ; Codd, V.* ; ENGAGE Consortium Telomere Group (Albrecht, E. ; Gieger, C. ; Klopp, N. ; Peters, A. ; Wichmann, H.-E.) ; Samani, N.J.* ; Metayer, C.* ; Wiemels, J.L.*
     
    
        
Common genetic variants associated with telomere length confer risk for neuroblastoma and other childhood cancers.
    
    
        
    
    
        
        Carcinogenesis 37, 576-582 (2016)
    
    
    
      
      
	
	    We identify inherited genetic variants associated with telomere length that may also confer risk for childhood cancers. Analyses reveal that genetic predisposition to longer telomere length increased risk of neuroblastoma, and potentially risk of osteosarcoma and acute lymphoblastic leukemia.Aberrant telomere lengthening is an important feature of cancer cells in adults and children. In addition to somatic mutations, germline polymorphisms in telomere maintenance genes impact telomere length. Whether these telomere-associated polymorphisms affect risk of childhood malignancies remains largely unexplored. We collected genome-wide data from three groups with pediatric malignancies [neuroblastoma (N = 1516), acute lymphoblastic leukemia (ALL) (N = 958) and osteosarcoma (N = 660)] and three control populations (N = 6892). Using case-control comparisons, we analyzed eight single nucleotide polymorphisms (SNPs) in genes definitively associated with interindividual variation in leukocyte telomere length (LTL) in prior genome-wide association studies: ACYP2, TERC, NAF1, TERT, OBFC1, CTC1, ZNF208 and RTEL1. Six of these SNPs were associated (P < 0.05) with neuroblastoma risk, one with leukemia risk and one with osteosarcoma risk. The allele associated with longer LTL increased cancer risk for all these significantly associated SNPs. Using a weighted linear combination of the eight LTL-associated SNPs, we observed that neuroblastoma patients were predisposed to longer LTL than controls, with each standard deviation increase in genotypically estimated LTL associated with a 1.15-fold increased odds of neuroblastoma (95%CI = 1.09-1.22; P = 7.9x10(-7)). This effect was more pronounced in adolescent-onset neuroblastoma patients (OR = 1.46; 95%CI = 1.03-2.08). A one standard deviation increase in genotypically estimated LTL was more weakly associated with osteosarcoma risk (OR = 1.10; 95%CI = 1.01-1.19; P = 0.017) and leukemia risk (OR = 1.07; 95%CI = 1.00-1.14; P = 0.044), specifically for leukemia patients who relapsed (OR = 1.19; 95%CI = 1.01-1.40; P = 0.043). These results indicate that genetic predisposition to longer LTL is a newly identified risk factor for neuroblastoma and potentially for other cancers of childhood.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Genome-wide Association; Acute Lymphoblastic-leukemia; Mendelian Randomization; Susceptibility Loci; Adult Glioma; Metaanalysis; Mutations; Disease; Relapse; Tert
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2016
    
 
    
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        HGF-reported in Year
        2016
    
 
    
    
        ISSN (print) / ISBN
        0143-3334
    
 
    
        e-ISSN
        1460-2180
    
 
    
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	    Volume: 37,  
	    Issue: 6,  
	    Pages: 576-582 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            Oxford University Press
        
 
        
            Publishing Place
            Oxford
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
30202 - Environmental Health
    
 
    
        Research field(s)
        Genetics and Epidemiology
    
 
    
        PSP Element(s)
        G-504100-001
G-504091-004
G-504000-001
    
 
    
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        Erfassungsdatum
        2016-07-09