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. 2017 Feb 6:8:14175.
doi: 10.1038/ncomms14175.

Genome-wide association analysis implicates dysregulation of immunity genes in chronic lymphocytic leukaemia

Philip J Law  1 Sonja I Berndt  2 Helen E Speedy  1 Nicola J Camp  3 Georgina P Sava  1 Christine F Skibola  4 Amy Holroyd  1 Vijai Joseph  5 Nicola J Sunter  6 Alexandra Nieters  7 Silvia Bea  8 Alain Monnereau  9   10   11 David Martin-Garcia  8 Lynn R Goldin  2 Guillem Clot  8 Lauren R Teras  12 Inés Quintela  13 Brenda M Birmann  14 Sandrine Jayne  15 Wendy Cozen  16   17 Aneela Majid  15 Karin E Smedby  18 Qing Lan  2 Claire Dearden  19 Angela R Brooks-Wilson  20   21 Andrew G Hall  6 Mark P Purdue  2 Tryfonia Mainou-Fowler  22 Claire M Vajdic  23 Graham H Jackson  24 Pierluigi Cocco  25 Helen Marr  6 Yawei Zhang  26 Tongzhang Zheng  26 Graham G Giles  27   28 Charles Lawrence  29 Timothy G Call  30 Mark Liebow  31 Mads Melbye  32   33 Bengt Glimelius  34 Larry Mansouri  34 Martha Glenn  3 Karen Curtin  3 W Ryan Diver  12 Brian K Link  35 Lucia Conde  4 Paige M Bracci  36 Elizabeth A Holly  36 Rebecca D Jackson  37 Lesley F Tinker  38 Yolanda Benavente  39   40 Paolo Boffetta  41 Paul Brennan  42 Marc Maynadie  43 James McKay  42 Demetrius Albanes  2 Stephanie Weinstein  2 Zhaoming Wang  44 Neil E Caporaso  2 Lindsay M Morton  2 Richard K Severson  45 Elio Riboli  46 Paolo Vineis  47   48 Roel C H Vermeulen  49   50 Melissa C Southey  51 Roger L Milne  27   28 Jacqueline Clavel  52   53 Sabine Topka  5 John J Spinelli  54   55 Peter Kraft  56   57 Maria Grazia Ennas  58 Geoffrey Summerfield  59 Giovanni M Ferri  60 Robert J Harris  61 Lucia Miligi  62 Andrew R Pettitt  61 Kari E North  63   64 David J Allsup  65 Joseph F Fraumeni  2 James R Bailey  65 Kenneth Offit  5 Guy Pratt  66 Henrik Hjalgrim  32 Chris Pepper  67 Stephen J Chanock  2 Chris Fegan  68 Richard Rosenquist  34 Silvia de Sanjose  41   42 Angel Carracedo  13   69 Martin J S Dyer  15 Daniel Catovsky  70 Elias Campo  8   71 James R Cerhan  72 James M Allan  6 Nathanial Rothman  2 Richard Houlston  1 Susan Slager  72
Affiliations

Genome-wide association analysis implicates dysregulation of immunity genes in chronic lymphocytic leukaemia

Philip J Law et al. Nat Commun. .

Abstract

Several chronic lymphocytic leukaemia (CLL) susceptibility loci have been reported; however, much of the heritable risk remains unidentified. Here we perform a meta-analysis of six genome-wide association studies, imputed using a merged reference panel of 1,000 Genomes and UK10K data, totalling 6,200 cases and 17,598 controls after replication. We identify nine risk loci at 1p36.11 (rs34676223, P=5.04 × 10-13), 1q42.13 (rs41271473, P=1.06 × 10-10), 4q24 (rs71597109, P=1.37 × 10-10), 4q35.1 (rs57214277, P=3.69 × 10-8), 6p21.31 (rs3800461, P=1.97 × 10-8), 11q23.2 (rs61904987, P=2.64 × 10-11), 18q21.1 (rs1036935, P=3.27 × 10-8), 19p13.3 (rs7254272, P=4.67 × 10-8) and 22q13.33 (rs140522, P=2.70 × 10-9). These new and established risk loci map to areas of active chromatin and show an over-representation of transcription factor binding for the key determinants of B-cell development and immune response.

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Conflict of interest statement

The authors declare no competing financial interests.

Figures

Figure 1
Figure 1. Manhattan plot of association P values.
Shown are the genome-wide P values (two-sided) of >10 million successfully imputed autosomal SNPs in 4,478 cases and 13,213 controls from the discovery phase. Text labelled in red are previously identified risk loci, and text labelled in blue are newly identified risk loci. The red horizontal line represents the genome-wide significance threshold of P=5.0 × 10−8.
Figure 2
Figure 2. Regional plots of association results and recombination rates for new risk loci for chronic lymphocytic leukaemia.
Results shown for 1p36.11, 4q24, 4q35.1, 19p13.3, 22q13.33 (ae). Plots (drawn using visPig62) show association results of both genotyped (triangles) and imputed (circles) SNPs in the GWAS samples and recombination rates. −log10 P values (y axes) of the SNPs are shown according to their chromosomal positions (x axes). The sentinel SNP in each combined analysis is shown as a large circle or triangle and is labelled by its rsID. The colour intensity of each symbol reflects the extent of LD with the top genotyped SNP, white (r2=0) through to dark red (r2=1.0). Genetic recombination rates, estimated using the 1000 Genomes Project samples, are shown with a light blue line. Physical positions are based on NCBI build 37 of the human genome. Also shown are the chromatin-state segmentation track (ChromHMM) for lymphoblastoid cells using data from the HapMap ENCODE Project, and the positions of genes and transcripts mapping to the region of association.
Figure 3
Figure 3. Regional plots of association results and recombination rates for new risk loci for chronic lymphocytic leukaemia.
Results shown for 1q42.13, 6p21.31, 11q23.2, 18q21.1 (ad). Plots (drawn using visPig62) show association results of both genotyped (triangles) and imputed (circles) SNPs in the GWAS samples and recombination rates. −log10 P values (y axes) of the SNPs are shown according to their chromosomal positions (x axes). The sentinel SNP in each combined analysis is shown as a large circle or triangle and is labelled by its rsID. The colour intensity of each symbol reflects the extent of LD with the top genotyped SNP, white (r2=0) through dark red (r2=1.0). Genetic recombination rates, estimated using the 1000 Genomes Project samples, are shown with a light blue line. Physical positions are based on NCBI build 37 of the human genome. Also shown are the chromatin-state segmentation track (ChromHMM) for lymphoblastoid cells using data from the HapMap ENCODE Project, and the positions of genes and transcripts mapping to the region of association.
Figure 4
Figure 4. Enrichment of transcription factors and histone marks.
The enrichment and over-representation of (a) histone marks and (b) transcription factors using the new risk SNPs and known CLL risk SNPs. The red line represents the Bonferroni-corrected P value threshold.
Figure 5
Figure 5. Hive Plot of common protein–protein interactions in CLL.
Each arm represents a functional annotation term, each arc represents an interaction between two proteins and the distance from the centre of the plot corresponds to a greater number of protein–protein interactions (higher degree of the node). The left arm represents proteins annotated as being involved in BCR signalling; the top arm represents proteins annotated as immune response; the right arm represents proteins involved in apoptosis; and the bottom arm represents proteins involved in DNA damage and chromosomal integrity. Selected proteins known to be involved in CLL risk are shown.

References

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