Last updated: 2022-03-03
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Knit directory: cTWAS_analysis/
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#number of imputed weights
nrow(qclist_all)
[1] 11540
#number of imputed weights by chromosome
table(qclist_all$chr)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1112 817 667 419 566 572 571 434 457 464 693 659 232 385 381 551
17 18 19 20 21 22
700 174 910 343 128 305
#number of imputed weights without missing variants
sum(qclist_all$nmiss==0)
[1] 8891
#proportion of imputed weights without missing variants
mean(qclist_all$nmiss==0)
[1] 0.7705
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
#estimated group prior
estimated_group_prior <- group_prior_rec[,ncol(group_prior_rec)]
names(estimated_group_prior) <- c("gene", "snp")
estimated_group_prior["snp"] <- estimated_group_prior["snp"]*thin #adjust parameter to account for thin argument
print(estimated_group_prior)
gene snp
0.0147028 0.0002445
#estimated group prior variance
estimated_group_prior_var <- group_prior_var_rec[,ncol(group_prior_var_rec)]
names(estimated_group_prior_var) <- c("gene", "snp")
print(estimated_group_prior_var)
gene snp
8.286 8.849
#report sample size
print(sample_size)
[1] 82315
#report group size
group_size <- c(nrow(ctwas_gene_res), n_snps)
print(group_size)
[1] 11540 7573890
#estimated group PVE
estimated_group_pve <- estimated_group_prior_var*estimated_group_prior*group_size/sample_size #check PVE calculation
names(estimated_group_pve) <- c("gene", "snp")
print(estimated_group_pve)
gene snp
0.01708 0.19908
#compare sum(PIP*mu2/sample_size) with above PVE calculation
c(sum(ctwas_gene_res$PVE),sum(ctwas_snp_res$PVE))
[1] 0.08822 1.53847
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
genename region_tag susie_pip mu2 PVE z num_eqtl
11129 ZNF823 19_10 0.9840 28.84 0.0003447 5.501 2
4195 FEZF1 7_74 0.9784 27.54 0.0003273 -5.314 1
5873 GALNT2 1_117 0.9207 22.69 0.0002538 4.705 2
12285 AC012074.2 2_15 0.9057 21.29 0.0002343 4.623 1
1532 PIK3IP1 22_11 0.8790 21.10 0.0002253 4.340 1
6351 ARFGAP2 11_29 0.7986 23.89 0.0002318 4.740 1
3127 SF3B1 2_117 0.7879 42.04 0.0004024 6.725 1
7609 SERPINI1 3_103 0.7858 19.74 0.0001885 -4.085 2
11503 DISP3 1_9 0.7784 20.82 0.0001969 3.912 1
3914 CNOT1 16_31 0.7776 26.36 0.0002490 5.341 2
1753 PTK6 20_37 0.7546 29.21 0.0002677 -5.380 2
3758 SSPN 12_18 0.7528 21.07 0.0001927 4.024 1
450 ARID1B 6_102 0.7328 21.01 0.0001871 -3.907 1
6495 FAM177A1 14_9 0.6873 22.12 0.0001847 -4.480 3
12147 ANKRD63 15_14 0.6838 28.66 0.0002381 5.452 1
3267 MAP7D1 1_22 0.6838 23.90 0.0001985 -4.907 1
10100 NPIPA1 16_15 0.6712 21.50 0.0001753 4.072 1
9461 DIRAS1 19_3 0.6677 22.93 0.0001860 -4.658 1
13946 EBLN3P 9_28 0.6670 21.43 0.0001737 -4.450 1
753 ATP1B3 3_87 0.6637 22.08 0.0001781 3.663 1
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
genename region_tag susie_pip mu2 PVE z num_eqtl
11951 PLEKHM1 17_27 2.769e-05 2961.56 9.961e-07 3.2051 1
12200 FAM215B 17_27 0.000e+00 2370.93 0.000e+00 -3.3160 1
9739 HLA-DQB1 6_26 9.426e-14 859.83 9.846e-16 4.2352 1
10933 HLA-DQA1 6_26 1.703e-13 480.05 9.932e-16 1.9545 1
10811 HLA-DRB1 6_26 1.069e-13 446.81 5.803e-16 3.7636 2
3541 KANSL1 17_27 0.000e+00 317.95 0.000e+00 3.0672 1
10394 ARL17A 17_27 0.000e+00 317.95 0.000e+00 3.0672 1
12087 ARL17B 17_27 0.000e+00 317.95 0.000e+00 -3.0672 1
12366 HLA-DQA2 6_26 1.492e-13 293.87 5.327e-16 0.8547 1
9906 ACBD4 17_27 0.000e+00 156.57 0.000e+00 1.8587 2
5027 NMT1 17_27 0.000e+00 126.28 0.000e+00 2.7209 1
2468 WNT3 17_27 0.000e+00 123.13 0.000e+00 0.2418 1
10265 FMNL1 17_27 0.000e+00 120.89 0.000e+00 0.6638 1
9085 DCAKD 17_27 0.000e+00 108.98 0.000e+00 -1.8291 2
12183 CYP21A2 6_26 2.681e-12 96.41 3.140e-15 0.1375 1
11460 HSPA1L 6_26 1.806e-13 92.93 2.039e-16 0.9130 1
11924 C4B 6_26 1.782e-13 91.62 1.983e-16 -2.5606 2
7137 ARHGAP27 17_27 0.000e+00 84.67 0.000e+00 0.9681 2
13535 RP1-86C11.7 6_21 1.812e-01 66.58 1.465e-04 9.0332 1
4427 C1QL1 17_27 0.000e+00 63.90 0.000e+00 2.1524 2
genename region_tag susie_pip mu2 PVE z num_eqtl
3127 SF3B1 2_117 0.7879 42.04 0.0004024 6.725 1
11129 ZNF823 19_10 0.9840 28.84 0.0003447 5.501 2
4195 FEZF1 7_74 0.9784 27.54 0.0003273 -5.314 1
13918 LINC02033 3_28 0.6267 41.50 0.0003160 -6.688 1
1753 PTK6 20_37 0.7546 29.21 0.0002677 -5.380 2
5873 GALNT2 1_117 0.9207 22.69 0.0002538 4.705 2
3914 CNOT1 16_31 0.7776 26.36 0.0002490 5.341 2
12147 ANKRD63 15_14 0.6838 28.66 0.0002381 5.452 1
12285 AC012074.2 2_15 0.9057 21.29 0.0002343 4.623 1
6351 ARFGAP2 11_29 0.7986 23.89 0.0002318 4.740 1
1532 PIK3IP1 22_11 0.8790 21.10 0.0002253 4.340 1
3267 MAP7D1 1_22 0.6838 23.90 0.0001985 -4.907 1
11381 LINC00222 6_73 0.6071 26.74 0.0001972 -5.182 1
11503 DISP3 1_9 0.7784 20.82 0.0001969 3.912 1
3758 SSPN 12_18 0.7528 21.07 0.0001927 4.024 1
7609 SERPINI1 3_103 0.7858 19.74 0.0001885 -4.085 2
450 ARID1B 6_102 0.7328 21.01 0.0001871 -3.907 1
9461 DIRAS1 19_3 0.6677 22.93 0.0001860 -4.658 1
412 CTNNA1 5_82 0.6500 23.43 0.0001850 5.046 1
6495 FAM177A1 14_9 0.6873 22.12 0.0001847 -4.480 3
genename region_tag susie_pip mu2 PVE z num_eqtl
12064 HCG11 6_20 0.027923 63.10 2.140e-05 9.082 1
13097 CTA-14H9.5 6_20 0.027923 63.10 2.140e-05 9.082 1
13535 RP1-86C11.7 6_21 0.181176 66.58 1.465e-04 9.033 1
2890 PRSS16 6_21 0.039048 57.48 2.727e-05 -9.032 2
10943 ZSCAN16 6_22 0.020120 63.87 1.561e-05 -8.509 1
9834 HIST1H2BC 6_20 0.029117 49.53 1.752e-05 -8.028 1
10473 BTN3A2 6_20 0.021513 45.47 1.188e-05 7.711 2
10608 HIST1H1C 6_20 0.021800 41.34 1.095e-05 -7.382 2
5150 PGBD1 6_22 0.020856 44.61 1.130e-05 -7.166 3
7085 ZSCAN12 6_22 0.036348 34.55 1.526e-05 -6.844 1
10787 ZKSCAN3 6_22 0.029919 32.32 1.175e-05 6.777 2
3127 SF3B1 2_117 0.787861 42.04 4.024e-04 6.725 1
6323 CYP17A1 10_66 0.009517 29.77 3.442e-06 6.720 1
10627 ZSCAN23 6_22 0.115011 43.04 6.014e-05 -6.711 2
13918 LINC02033 3_28 0.626738 41.50 3.160e-04 -6.688 1
10984 ZSCAN26 6_22 0.021741 35.25 9.309e-06 6.656 3
2725 OGFOD2 12_75 0.006418 38.94 3.036e-06 6.518 1
9965 ARL6IP4 12_75 0.005859 38.62 2.749e-06 -6.491 1
2655 MDK 11_28 0.386935 37.17 1.747e-04 -6.357 1
3131 HSPE1 2_117 0.072993 35.44 3.143e-05 6.243 1
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
[1] 0.007539
#number of genes for gene set enrichment
length(genes)
[1] 32
Uploading data to Enrichr... Done.
Querying GO_Biological_Process_2021... Done.
Querying GO_Cellular_Component_2021... Done.
Querying GO_Molecular_Function_2021... Done.
Parsing results... Done.
[1] "GO_Biological_Process_2021"
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
Term Overlap
1 negative regulation of lipid kinase activity (GO:0090219) 2/8
2 positive regulation of mRNA metabolic process (GO:1903313) 2/13
3 regulation of neuron projection arborization (GO:0150011) 2/15
4 post-transcriptional gene silencing by RNA (GO:0035194) 2/20
5 positive regulation of cell projection organization (GO:0031346) 3/117
6 positive regulation of dephosphorylation (GO:0035306) 2/29
7 gene silencing by miRNA (GO:0035195) 2/32
8 positive regulation of protein dephosphorylation (GO:0035307) 2/34
9 regulation of protein autophosphorylation (GO:0031952) 2/37
10 mRNA destabilization (GO:0061157) 2/38
11 regulation of protein tyrosine kinase activity (GO:0061097) 2/39
12 regulation of protein dephosphorylation (GO:0035304) 2/41
Adjusted.P.value Genes
1 0.02002 PIK3IP1;PPP2R5A
2 0.02485 MOV10;CNOT1
3 0.02485 MOV10;DLG4
4 0.03355 MOV10;CNOT1
5 0.04669 DLG4;PTK6;SERPINI1
6 0.04669 PTPA;PPP2R5A
7 0.04669 MOV10;CNOT1
8 0.04669 PTPA;PPP2R5A
9 0.04669 PPP2R5B;PPP2R5A
10 0.04669 MOV10;CNOT1
11 0.04669 DLG4;PTK6
12 0.04727 PTPA;PPP2R5A
[1] "GO_Cellular_Component_2021"
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
Term Overlap Adjusted.P.value
1 protein phosphatase type 2A complex (GO:0000159) 3/17 0.000152
Genes
1 PTPA;PPP2R5B;PPP2R5A
[1] "GO_Molecular_Function_2021"
Version | Author | Date |
---|---|---|
ff6403a | sq-96 | 2022-02-27 |
Term Overlap Adjusted.P.value
1 protein phosphatase activator activity (GO:0072542) 3/13 6.315e-05
2 protein phosphatase regulator activity (GO:0019888) 3/57 3.080e-03
3 phosphatase activator activity (GO:0019211) 2/14 4.460e-03
Genes
1 PTPA;PPP2R5B;PPP2R5A
2 PTPA;PPP2R5B;PPP2R5A
3 PPP2R5B;PPP2R5A
Description FDR Ratio
62 Disproportionate tall stature 0.02646 1/13
65 Familial encephalopathy with neuroserpin inclusion bodies 0.02646 1/13
70 Hematopoetic Myelodysplasia 0.02646 2/13
78 HYPOGONADOTROPIC HYPOGONADISM 22 WITH OR WITHOUT ANOSMIA 0.02646 1/13
54 Refractory anemia with ringed sideroblasts 0.03172 1/13
63 Macular Dystrophy, Butterfly-Shaped Pigmentary, 2 0.03172 1/13
66 Patterned dystrophy of retinal pigment epithelium 0.03172 1/13
72 CHROMOSOME 6q24-q25 DELETION SYNDROME 0.03172 1/13
75 MYELODYSPLASTIC SYNDROME 0.03172 2/13
79 Butterfly-shaped pigmentary macular dystrophy 0.03172 1/13
BgRatio
62 1/9703
65 1/9703
70 29/9703
78 1/9703
54 2/9703
63 3/9703
66 3/9703
72 2/9703
75 67/9703
79 3/9703
Loading the functional categories...
Loading the ID list...
Loading the reference list...
Performing the enrichment analysis...
Warning in oraEnrichment(interestGeneList, referenceGeneList, geneSet, minNum =
minNum, : No significant gene set is identified based on FDR 0.05!
NULL
#number of genes in known annotations
print(length(known_annotations))
[1] 130
#number of genes in known annotations with imputed expression
print(sum(known_annotations %in% ctwas_gene_res$genename))
[1] 67
#significance threshold for TWAS
print(sig_thresh)
[1] 4.595
#number of ctwas genes
length(ctwas_genes)
[1] 5
#number of TWAS genes
length(twas_genes)
[1] 87
#show novel genes (ctwas genes with not in TWAS genes)
ctwas_gene_res[ctwas_gene_res$genename %in% novel_genes,report_cols]
genename region_tag susie_pip mu2 PVE z num_eqtl
1532 PIK3IP1 22_11 0.879 21.1 0.0002253 4.34 1
#sensitivity / recall
print(sensitivity)
ctwas TWAS
0.007692 0.053846
#specificity
print(specificity)
ctwas TWAS
0.9997 0.9930
#precision / PPV
print(precision)
ctwas TWAS
0.20000 0.08046
#number of genes in known annotations (with imputed expression)
print(length(known_annotations))
[1] 67
#number of bystander genes (with imputed expression)
print(length(unrelated_genes))
[1] 806
#subset results to genes in known annotations or bystanders
ctwas_gene_res_subset <- ctwas_gene_res[ctwas_gene_res$genename %in% c(known_annotations, unrelated_genes),]
#assign ctwas and TWAS genes
ctwas_genes <- ctwas_gene_res_subset$genename[ctwas_gene_res_subset$susie_pip>0.8]
twas_genes <- ctwas_gene_res_subset$genename[abs(ctwas_gene_res_subset$z)>sig_thresh]
#significance threshold for TWAS
print(sig_thresh)
[1] 4.595
#number of ctwas genes (in known annotations or bystanders)
length(ctwas_genes)
[1] 1
#number of TWAS genes (in known annotations or bystanders)
length(twas_genes)
[1] 30
#sensitivity / recall
sensitivity
ctwas TWAS
0.01493 0.10448
#specificity / (1 - False Positive Rate)
specificity
ctwas TWAS
1.0000 0.9715
#precision / PPV / (1 - False Discovery Rate)
precision
ctwas TWAS
1.0000 0.2333
pip_range <- (0:1000)/1000
sensitivity <- rep(NA, length(pip_range))
specificity <- rep(NA, length(pip_range))
for (index in 1:length(pip_range)){
pip <- pip_range[index]
ctwas_genes <- ctwas_gene_res_subset$genename[ctwas_gene_res_subset$susie_pip>=pip]
sensitivity[index] <- sum(ctwas_genes %in% known_annotations)/length(known_annotations)
specificity[index] <- sum(!(unrelated_genes %in% ctwas_genes))/length(unrelated_genes)
}
plot(1-specificity, sensitivity, type="l", xlim=c(0,1), ylim=c(0,1), main="", xlab="1 - Specificity", ylab="Sensitivity")
title(expression("ROC Curve for cTWAS (black) and TWAS (" * phantom("red") * ")"))
title(expression(phantom("ROC Curve for cTWAS (black) and TWAS (") * "red" * phantom(")")), col.main="red")
sig_thresh_range <- seq(from=0, to=max(abs(ctwas_gene_res_subset$z)), length.out=length(pip_range))
for (index in 1:length(sig_thresh_range)){
sig_thresh_plot <- sig_thresh_range[index]
twas_genes <- ctwas_gene_res_subset$genename[abs(ctwas_gene_res_subset$z)>=sig_thresh_plot]
sensitivity[index] <- sum(twas_genes %in% known_annotations)/length(known_annotations)
specificity[index] <- sum(!(unrelated_genes %in% twas_genes))/length(unrelated_genes)
}
lines(1-specificity, sensitivity, xlim=c(0,1), ylim=c(0,1), col="red", lty=1)
abline(a=0,b=1,lty=3)
#add previously computed points from the analysis
ctwas_genes <- ctwas_gene_res_subset$genename[ctwas_gene_res_subset$susie_pip>0.8]
twas_genes <- ctwas_gene_res_subset$genename[abs(ctwas_gene_res_subset$z)>sig_thresh]
points(1-specificity_plot["ctwas"], sensitivity_plot["ctwas"], pch=21, bg="black")
points(1-specificity_plot["TWAS"], sensitivity_plot["TWAS"], pch=21, bg="red")
#table of outcomes for silver standard genes
-sort(-table(silver_standard_case))
silver_standard_case
Not Imputed Insignificant z-score Nearby SNP(s)
63 60 6
Detected (PIP > 0.8)
1
#show inconclusive genes
silver_standard_case[silver_standard_case=="Inconclusive"]
named character(0)
sessionInfo()
R version 3.6.1 (2019-07-05)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Scientific Linux 7.4 (Nitrogen)
Matrix products: default
BLAS/LAPACK: /software/openblas-0.2.19-el7-x86_64/lib/libopenblas_haswellp-r0.2.19.so
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] parallel stats4 stats graphics grDevices utils datasets
[8] methods base
other attached packages:
[1] GenomicRanges_1.36.1 GenomeInfoDb_1.20.0 IRanges_2.18.1
[4] S4Vectors_0.22.1 BiocGenerics_0.30.0 biomaRt_2.40.1
[7] readxl_1.3.1 forcats_0.5.1 stringr_1.4.0
[10] dplyr_1.0.7 purrr_0.3.4 readr_2.1.1
[13] tidyr_1.1.4 tidyverse_1.3.1 tibble_3.1.6
[16] WebGestaltR_0.4.4 disgenet2r_0.99.2 enrichR_3.0
[19] cowplot_1.0.0 ggplot2_3.3.5 workflowr_1.7.0
loaded via a namespace (and not attached):
[1] ggbeeswarm_0.6.0 colorspace_2.0-2 rjson_0.2.20
[4] ellipsis_0.3.2 rprojroot_2.0.2 XVector_0.24.0
[7] fs_1.5.2 rstudioapi_0.13 farver_2.1.0
[10] ggrepel_0.9.1 bit64_4.0.5 AnnotationDbi_1.46.0
[13] fansi_1.0.2 lubridate_1.8.0 xml2_1.3.3
[16] codetools_0.2-16 doParallel_1.0.17 cachem_1.0.6
[19] knitr_1.36 jsonlite_1.7.2 apcluster_1.4.8
[22] Cairo_1.5-12.2 broom_0.7.10 dbplyr_2.1.1
[25] compiler_3.6.1 httr_1.4.2 backports_1.4.1
[28] assertthat_0.2.1 Matrix_1.2-18 fastmap_1.1.0
[31] cli_3.1.0 later_0.8.0 prettyunits_1.1.1
[34] htmltools_0.5.2 tools_3.6.1 igraph_1.2.10
[37] GenomeInfoDbData_1.2.1 gtable_0.3.0 glue_1.6.2
[40] reshape2_1.4.4 doRNG_1.8.2 Rcpp_1.0.8
[43] Biobase_2.44.0 cellranger_1.1.0 jquerylib_0.1.4
[46] vctrs_0.3.8 svglite_1.2.2 iterators_1.0.14
[49] xfun_0.29 ps_1.6.0 rvest_1.0.2
[52] lifecycle_1.0.1 rngtools_1.5.2 XML_3.99-0.3
[55] zlibbioc_1.30.0 getPass_0.2-2 scales_1.1.1
[58] vroom_1.5.7 hms_1.1.1 promises_1.0.1
[61] yaml_2.2.1 curl_4.3.2 memoise_2.0.1
[64] ggrastr_1.0.1 gdtools_0.1.9 stringi_1.7.6
[67] RSQLite_2.2.8 highr_0.9 foreach_1.5.2
[70] rlang_1.0.1 pkgconfig_2.0.3 bitops_1.0-7
[73] evaluate_0.14 lattice_0.20-38 labeling_0.4.2
[76] bit_4.0.4 processx_3.5.2 tidyselect_1.1.1
[79] plyr_1.8.6 magrittr_2.0.2 R6_2.5.1
[82] generics_0.1.1 DBI_1.1.2 pillar_1.6.4
[85] haven_2.4.3 whisker_0.3-2 withr_2.4.3
[88] RCurl_1.98-1.5 modelr_0.1.8 crayon_1.5.0
[91] utf8_1.2.2 tzdb_0.2.0 rmarkdown_2.11
[94] progress_1.2.2 grid_3.6.1 data.table_1.14.2
[97] blob_1.2.2 callr_3.7.0 git2r_0.26.1
[100] reprex_2.0.1 digest_0.6.29 httpuv_1.5.1
[103] munsell_0.5.0 beeswarm_0.2.3 vipor_0.4.5