Last updated: 2022-06-09

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Knit directory: EMBL2016/analysis/

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Load libraries and dataset

Load datasets

Preprocessing IC50 screen data

Select CLL samples and use AUC as measures of drug effect

screenData <- ic50 %>% 
    dplyr::rename(viab = normVal, viab.auc  = normVal_auc, conc = Concentration) %>%
    filter(!Drug%in% c("PBS","DMSO"))

#for the drugs that are also in EMBL2016 screen, use the same name as in EMBL2016 screen
screenData <- mutate(screenData, emblName = targetAnno[match(Drug, targetAnno$nameIC50),]$nameEMBL2016) %>%
    mutate(Drug = ifelse(is.na(emblName), Drug, emblName)) %>%
    select(-emblName)

Overview of associations between drug responses and genomics in CLL

Using AUC of trepazoidal rule

Without blocking for IGHV

Only mutations occcured at least 5 times will be included in the test

Perform test

Adjust p-value use IHW, using standard deviation as covariate

meanSdTab <- tibble(name = rownames(viabMat),
                    meanVal = rowMeans(viabMat, na.rm = TRUE),
                    sdVal = genefilter::rowSds(viabMat, na.rm=TRUE))


ihwTab <- tibble(pval = pTab$p, name = pTab$drug) %>% 
  left_join(meanSdTab)
ihwRes <- ihw(pval ~ sdVal,  data = ihwTab, alpha = 0.1)
pTab$p.adj.ihw <- adj_pvalues(ihwRes)
#plot(ihwRes)

Write out test result table

write_csv2(pTab,"../docs/p_table_noBlock_IC50.csv")

p_table_noBlock_IC50.csv

Number of significant associations per gene (10% FDR)

Number of significant associations per gene (10% FDR), adjusted by IHW

Seems to help a little, especially with some each associations.

Use the result from p values adjustment by IHW

pTab <- mutate(pTab, p.adj = p.adj.ihw)

P value scatter plot (only show drugs with assocations)

Associations pass 10% FDR are colored by genes.
Only a few associations pass the 10% FDR threshold, although many associations pass raw p-value 0.01 threshold. This could be due to the multiple hypothesis testing problem. We have more drugs in EMLB2016 screen than other screens. (I already pre-filtered the drugs that show very little variance across samples.)
PDF version: pScatter-1.pdf

Volcano plots

#filter genes with significant assocaitions
useGene <- unique(filter(pTab, p.adj <=0.1)$gene)

#get top 10 most up and down regulated genes
upDrug <- lapply(unique(pTab$gene), function(n) {
  dplyr::filter(pTab, gene ==n, logFC >0) %>% top_n(10, -log10(p))
}) %>% bind_rows()

downDrug <- lapply(unique(pTab$gene), function(n) {
  dplyr::filter(pTab, gene == n, logFC  < 0) %>% top_n(10, -log10(p))
}) %>% bind_rows() 

drugLab <- bind_rows(upDrug, downDrug) %>%
  filter(p.adj <0.1) %>%
  mutate(drugLabel = drug) %>% select(drug, gene, drugLabel)

plotList <- lapply(useGene, function(n) {
  eachTab <- filter(pTab, gene %in% n, !is.na(p)) %>%
    mutate(direction = ifelse(p.adj > 0.1, "n.s.",
                              ifelse(logFC>0, "resistant","sensitive"))) %>%
    left_join(drugLab, by = c("drug", "gene"))
  
  #pCut <- -log10(max(filter(eachTab, p.adj <=0.1)$p))
  pCut <- -log10(0.1)
  ggplot(eachTab, aes(x=logFC, y = -log10(p.adj))) +
    geom_point(aes(col = direction)) +
    ggrepel::geom_text_repel(aes(label = drugLabel), max.overlaps = 100) +
    scale_color_manual(values = c("n.s."="grey60","resistant" = "red","sensitive" = "blue")) +
    geom_hline(yintercept = pCut, linetype = "dashed", color = "orange") +
    ylab("-log10(adjusted P value)") + xlab("log2(fold change)") +
    ggtitle(sprintf("%s (mutated vs unmutated)", n)) +
    theme_bw() +
    theme(plot.title = element_text(hjust=0.5, size=15, face ="bold"),
          legend.position = "bottom",
          axis.text = element_text(size=14),
          axis.title = element_text(size=14))
})
plot_grid(plotlist = plotList, ncol=2)

makepdf(plotList, "../docs/volcano_noBlocking_IC50.pdf", ncol=2, nrow=2, height = 10, width = 9)

PDF version: volcano_noBlocking_IC50.pdf

A table of significant associations

filter(pTab, p.adj <=0.1) %>% mutate_if(is.numeric, formatC, digits=2) %>%
  DT::datatable()

Blocking for IGHV

p_table_blockIGHV_IC50.csv

Number of significant associations per gene (10% FDR)

Associations pass 10% FDR are colored by genes.

Number of significant associations per gene (10% FDR), adjusted by IHW

Number of significant associations per gene, blocking for non-IGHV features

P value scatter plot

PDF version: pScatter_aov-1.pdf

Volcano plots

#filter genes with significant assocaitions
useGene <- unique(filter(pTab.block, p.adj <=0.1)$gene)

#get top 10 most up and down regulated genes
upDrug <- lapply(unique(pTab.block$gene), function(n) {
  filter(pTab.block, gene ==n, logFC >0) %>% top_n(10, -log10(p))
}) %>% bind_rows()

downDrug <- lapply(unique(pTab.block$gene), function(n) {
  filter(pTab.block, gene == n, logFC  < 0) %>% top_n(10, -log10(p))
}) %>% bind_rows() 

drugLab <- bind_rows(upDrug, downDrug) %>%
  filter(p.adj <0.1) %>%
  mutate(drugLabel = drug) %>% select(drug, gene, drugLabel)

plotList <- lapply(useGene, function(n) {
  eachTab <- filter(pTab.block, gene %in% n, !is.na(p)) %>%
    mutate(direction = ifelse(p.adj > 0.1, "n.s.",
                              ifelse(logFC>0, "resistant","sensitive"))) %>%
    left_join(drugLab, by = c("drug", "gene"))
  
  #pCut <- -log10(max(filter(eachTab, p.adj <=0.1)$p))
  pCut <- -log10(0.1)
  ggplot(eachTab, aes(x=logFC, y = -log10(p.adj))) +
    geom_point(aes(col = direction)) +
    ggrepel::geom_text_repel(aes(label = drugLabel), max.overlaps = 100) +
    scale_color_manual(values = c("n.s."="grey60","resistant" = "red","sensitive" = "blue")) +
    geom_hline(yintercept = pCut, linetype = "dashed", color = "orange") +
    ylab("-log10(adjusted P value)") + xlab("log2(fold change)") +
    ggtitle(sprintf("%s (mutated vs unmutated)", n)) +
    theme_bw() +
    theme(plot.title = element_text(hjust=0.5, size=15, face ="bold"),
          legend.position = "bottom",
          axis.text = element_text(size=14),
          axis.title = element_text(size=14))
})
plot_grid(plotlist = plotList, ncol=2)

makepdf(plotList, "../docs/volcano_withBlocking_IC50.pdf", ncol=2, nrow=2, height = 10, width = 9)

PDF version: volcano_withBlocking_IC50.pdf

A table of significant associations

filter(pTab.block, p.adj <=0.1) %>% mutate_if(is.numeric, formatC, digits=2) %>%
  DT::datatable()

Within M-CLL only

Only mutations occcured at least 3 times will be included in the test

p_table_M_CLL_IC50.csv

Number of significant associations per gene (10% FDR)

Volcano plots

#filter genes with significant assocaitions
useGene <- unique(filter(pTab, p.adj <=0.1)$gene)

plotList <- lapply(useGene, function(n) {
  eachTab <- filter(pTab, gene %in% n, !is.na(p)) %>%
    mutate(direction = ifelse(p.adj > 0.1, "n.s.",
                              ifelse(logFC>0, "resistant","sensitive"))) %>%
    mutate(drugLabel = ifelse(direction == "n.s.","",drug))
  
  pCut <- -log10(max(filter(eachTab, p.adj <=0.1)$p))
  
  ggplot(eachTab, aes(x=logFC, y = -log10(p))) +
    geom_point(aes(col = direction)) +
    ggrepel::geom_text_repel(aes(label = drugLabel), max.overlaps = 100) +
    scale_color_manual(values = c("n.s."="grey60","resistant" = "red","sensitive" = "blue")) +
    geom_hline(yintercept = pCut, linetype = "dashed", color = "orange") +
    ylab("-log10 (P value)") + xlab("log2 Fold Change") +
    ggtitle(sprintf("%s (mutated vs unmutated)", n)) +
    theme_bw() +
    theme(plot.title = element_text(hjust=0.5, size=15, face ="bold"),
          legend.position = "bottom")
})
plot_grid(plotlist = plotList, ncol=2)

makepdf(plotList, "../docs/volcano_M_CLL_IC50.pdf", ncol=1, nrow=1, height = 12, width = 12)

PDF version: volcano_M_CLL_IC50.pdf

A table of significant associations

filter(pTab, p.adj <=0.1) %>% mutate_if(is.numeric, formatC, digits=2) %>%
  DT::datatable()

Within U-CLL only

Only mutations occcured at least 3 times will be included in the test

p_table_U_CLL_IC50.csv

Number of significant associations per gene (10% FDR)

Volcano plots

#filter genes with significant assocaitions
useGene <- unique(filter(pTab, p.adj <=0.1)$gene)

plotList <- lapply(useGene, function(n) {
  eachTab <- filter(pTab, gene %in% n, !is.na(p)) %>%
    mutate(direction = ifelse(p.adj > 0.1, "n.s.",
                              ifelse(logFC>0, "resistant","sensitive"))) %>%
    mutate(drugLabel = ifelse(direction == "n.s.","",drug))
  
  pCut <- -log10(max(filter(eachTab, p.adj <=0.1)$p))
  
  ggplot(eachTab, aes(x=logFC, y = -log10(p))) +
    geom_point(aes(col = direction)) +
    ggrepel::geom_text_repel(aes(label = drugLabel), max.overlaps = 100) +
    scale_color_manual(values = c("n.s."="grey60","resistant" = "red","sensitive" = "blue")) +
    geom_hline(yintercept = pCut, linetype = "dashed", color = "orange") +
    ylab("-log10 (P value)") + xlab("log2 Fold Change") +
    ggtitle(sprintf("%s (mutated vs unmutated)", n)) +
    theme_bw() +
    theme(plot.title = element_text(hjust=0.5, size=15, face ="bold"),
          legend.position = "bottom")
})
plot_grid(plotlist = plotList, ncol=2)

makepdf(plotList, "../docs/volcano_U_CLL_IC50.pdf", ncol=1, nrow=1, height = 12, width = 12)

PDF version: volcano_U_CLL_IC50.pdf

A table of significant associations

filter(pTab, p.adj <=0.1) %>% mutate_if(is.numeric, formatC, digits=2) %>%
  DT::datatable()

Using individual concentrations

Without blocking for IGHV

p_table_noBlock_allConc_IC50.csv

Number of significant associations per gene (10% FDR)

P value heatmap

Only drugs show at least one significant association under 10% FDR

pTab.sig <- filter(pTab, p.adj <= 0.1)
plotTab <- filter(pTab, gene %in% pTab.sig$gene) %>%
  filter(Drug %in% pTab.sig$Drug) %>%
  mutate(sign = ifelse(p.adj <= 0.1, "*",""),
         pSign = -log10(p)) %>%
  mutate(pSign = ifelse(pSign > 12, 12, pSign)) %>%
  mutate(pSign = pSign * sign(logFC),
         Drug = sprintf("%s (%s)",Drug, targetFamily))

pMat <- mutate(plotTab, geneConc = paste0(gene,"_", concIndex)) %>%
  select(Drug, geneConc, pSign) %>%
  pivot_wider(names_from = geneConc, values_from = pSign) %>%
  data.frame() %>% column_to_rownames("Drug")

hc <- hclust(dist(pMat))
drugOrder <- rownames(pMat)[hc$order]

plotTab <- mutate(plotTab, Drug = factor(Drug, levels = drugOrder),
                  gene = factor(gene, levels = levels(sumTab$gene)))
ggplot(plotTab, aes(x=concIndex, y = Drug, fill = pSign)) +
  geom_tile() + geom_text(aes(label=sign), nudge_y = -0.25) +
  scale_fill_gradient2(low = "blue", mid = "white", high = "red", name ="-log10(P-value)") +
  facet_wrap(~gene, ncol =12) +
  xlab("concentration index")

* indicates assocations passed 10% FDR control

PDF version

A table of significant associations

filter(pTab, p.adj <=0.1) %>% mutate_if(is.numeric, formatC, digits=2) %>%
  left_join(select(targetAnno, drugName, target, pathway), by = c(Drug = "drugName")) %>%
  DT::datatable()

Blocking for IGHV

p_table_ighvBlock_allConc_IC50.csv

Number of significant associations per gene (10% FDR)

P value heatmap

Only drugs show at least one significant association under 10% FDR

pTab.sig <- filter(pTab, p.adj <= 0.1)
plotTab <- filter(pTab, gene %in% pTab.sig$gene) %>%
  filter(Drug %in% pTab.sig$Drug) %>%
  mutate(sign = ifelse(p.adj <= 0.1, "*",""),
         pSign = -log10(p)) %>%
  mutate(pSign = ifelse(pSign > 12, 12, pSign)) %>%
  mutate(pSign = pSign * sign(logFC),
         Drug = sprintf("%s (%s)",Drug, targetFamily))

pMat <- mutate(plotTab, geneConc = paste0(gene,"_", concIndex)) %>%
  select(Drug, geneConc, pSign) %>%
  pivot_wider(names_from = geneConc, values_from = pSign) %>%
  data.frame() %>% column_to_rownames("Drug")

hc <- hclust(dist(pMat))
drugOrder <- rownames(pMat)[hc$order]

plotTab <- mutate(plotTab, Drug = factor(Drug, levels = drugOrder),
                  gene = factor(gene, levels = levels(sumTab$gene)))
ggplot(plotTab, aes(x=concIndex, y = Drug, fill = pSign)) +
  geom_tile() + geom_text(aes(label=sign), nudge_y = -0.25) +
  scale_fill_gradient2(low = "blue", mid = "white", high = "red", name = "-log10(P-value)") +
  facet_wrap(~gene, ncol =12) +
  xlab("concentration index")

* indicates associations passed 10% FDR control

PDF version

A table of significant associations

targetAnno <- read_csv2("../data/targetAnnotation_all.csv") %>%
  mutate(drugName = nameEMBL2016)

filter(pTab, p.adj <=0.1) %>% mutate_if(is.numeric, formatC, digits=2) %>%
  left_join(select(targetAnno, drugName, target, pathway), by = c(Drug = "drugName")) %>%
  DT::datatable()

Drug responses associated with IGHV

Volcano plot Drugs colored by blue are more effective in U-CLL samples. The names of the drugs that show significant associations and effect size above 10% in at least 3 concentrations are labeled. Dashed line indicates 5% FDR

As expected, M-CLL samples show increased resistance to a lot of drugs.

Drug responses associated with Trisomy12

For all CLLs

How many triosmy12 samples?

tri12Tab <- distinct(viabTab, patientID, .keep_all = TRUE)
tri12Tab %>% filter(trisomy12 == 1) %>% nrow()
[1] 27

Volcano plot (10% FDR cut-off) for combined concentrations Drugs colored by blue are more effective in samples with trisomy12. The names of the drugs that show significant associations in at least 2 concentrations are labeled. Dashed line indicates 10% FDR.

Volcano plots for individual concentrations

Beeswarm plots for all drug at all concentrations

Drug_VS_trisomy12_allConc_IC50.pdf

For M CLLs only

Volcano plot (combined concentrations)

Volcation plots for individual concentrations

Beeswarm plots for all drug at all concentrations

Drug_VS_trisomy12_allConc_M-CLL_IC50.pdf

For U CLLs

Volcano plot (combined concentrations)

Volcation plots for individual concentrations

Beeswarm plots for all drug at all concentrations

Drug_VS_trisomy12_allConc_U-CLL_IC50.pdf


sessionInfo()
R version 4.2.0 (2022-04-22)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Big Sur/Monterey 10.16

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRblas.0.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] forcats_0.5.1       stringr_1.4.0       dplyr_1.0.9        
 [4] purrr_0.3.4         readr_2.1.2         tidyr_1.2.0        
 [7] tibble_3.1.7        tidyverse_1.3.1     limma_3.52.1       
[10] IHW_1.24.0          readxl_1.4.0        gtable_0.3.0       
[13] ggbeeswarm_0.6.0    jyluMisc_0.1.5      colorspace_2.0-3   
[16] RColorBrewer_1.1-3  ggrepel_0.9.1       ggplot2_3.3.6      
[19] cowplot_1.1.1       genefilter_1.78.0   pheatmap_1.0.12    
[22] reshape2_1.4.4      gridExtra_2.3       Biobase_2.56.0     
[25] BiocGenerics_0.42.0

loaded via a namespace (and not attached):
  [1] utf8_1.2.2                  shinydashboard_0.7.2       
  [3] tidyselect_1.1.2            RSQLite_2.2.14             
  [5] AnnotationDbi_1.58.0        htmlwidgets_1.5.4          
  [7] grid_4.2.0                  BiocParallel_1.30.2        
  [9] maxstat_0.7-25              munsell_0.5.0              
 [11] codetools_0.2-18            DT_0.23                    
 [13] withr_2.5.0                 highr_0.9                  
 [15] knitr_1.39                  rstudioapi_0.13            
 [17] stats4_4.2.0                ggsignif_0.6.3             
 [19] MatrixGenerics_1.8.0        labeling_0.4.2             
 [21] git2r_0.30.1                slam_0.1-50                
 [23] GenomeInfoDbData_1.2.8      lpsymphony_1.24.0          
 [25] KMsurv_0.1-5                bit64_4.0.5                
 [27] farver_2.1.0                rprojroot_2.0.3            
 [29] vctrs_0.4.1                 generics_0.1.2             
 [31] TH.data_1.1-1               xfun_0.31                  
 [33] sets_1.0-21                 R6_2.5.1                   
 [35] GenomeInfoDb_1.32.2         bitops_1.0-7               
 [37] cachem_1.0.6                fgsea_1.22.0               
 [39] DelayedArray_0.22.0         assertthat_0.2.1           
 [41] promises_1.2.0.1            scales_1.2.0               
 [43] vroom_1.5.7                 multcomp_1.4-19            
 [45] beeswarm_0.4.0              sandwich_3.0-1             
 [47] workflowr_1.7.0             rlang_1.0.2                
 [49] splines_4.2.0               rstatix_0.7.0              
 [51] broom_0.8.0                 BiocManager_1.30.18        
 [53] yaml_2.3.5                  abind_1.4-5                
 [55] modelr_0.1.8                crosstalk_1.2.0            
 [57] backports_1.4.1             httpuv_1.6.5               
 [59] tools_4.2.0                 relations_0.6-12           
 [61] ellipsis_0.3.2              gplots_3.1.3               
 [63] jquerylib_0.1.4             Rcpp_1.0.8.3               
 [65] plyr_1.8.7                  visNetwork_2.1.0           
 [67] zlibbioc_1.42.0             RCurl_1.98-1.6             
 [69] ggpubr_0.4.0                S4Vectors_0.34.0           
 [71] zoo_1.8-10                  SummarizedExperiment_1.26.1
 [73] haven_2.5.0                 cluster_2.1.3              
 [75] exactRankTests_0.8-35       fs_1.5.2                   
 [77] magrittr_2.0.3              data.table_1.14.2          
 [79] reprex_2.0.1                survminer_0.4.9            
 [81] mvtnorm_1.1-3               matrixStats_0.62.0         
 [83] hms_1.1.1                   shinyjs_2.1.0              
 [85] mime_0.12                   evaluate_0.15              
 [87] xtable_1.8-4                XML_3.99-0.9               
 [89] IRanges_2.30.0              compiler_4.2.0             
 [91] KernSmooth_2.23-20          crayon_1.5.1               
 [93] htmltools_0.5.2             later_1.3.0                
 [95] tzdb_0.3.0                  lubridate_1.8.0            
 [97] DBI_1.1.2                   dbplyr_2.1.1               
 [99] MASS_7.3-57                 BiocStyle_2.24.0           
[101] Matrix_1.4-1                car_3.0-13                 
[103] cli_3.3.0                   marray_1.74.0              
[105] parallel_4.2.0              igraph_1.3.1               
[107] GenomicRanges_1.48.0        pkgconfig_2.0.3            
[109] km.ci_0.5-6                 piano_2.12.0               
[111] xml2_1.3.3                  annotate_1.74.0            
[113] vipor_0.4.5                 bslib_0.3.1                
[115] XVector_0.36.0              drc_3.0-1                  
[117] rvest_1.0.2                 digest_0.6.29              
[119] Biostrings_2.64.0           rmarkdown_2.14             
[121] cellranger_1.1.0            fastmatch_1.1-3            
[123] survMisc_0.5.6              shiny_1.7.1                
[125] gtools_3.9.2                lifecycle_1.0.1            
[127] jsonlite_1.8.0              carData_3.0-5              
[129] fansi_1.0.3                 pillar_1.7.0               
[131] lattice_0.20-45             KEGGREST_1.36.0            
[133] fastmap_1.1.0               httr_1.4.3                 
[135] plotrix_3.8-2               survival_3.3-1             
[137] glue_1.6.2                  fdrtool_1.2.17             
[139] png_0.1-7                   bit_4.0.4                  
[141] stringi_1.7.6               sass_0.4.1                 
[143] blob_1.2.3                  caTools_1.18.2             
[145] memoise_2.0.1