Example for Classification Data – Breast Invasive Carcinoma
2025-10-07
Contents
0.1 Instalation
if (!require("BiocManager")) {
install.packages("BiocManager")
}
BiocManager::install("glmSparseNet")1 Required Packages
library(dplyr)
library(ggplot2)
library(survival)
library(futile.logger)
library(curatedTCGAData)
library(MultiAssayExperiment)
library(TCGAutils)
#
library(glmSparseNet)
#
# Some general options for futile.logger the debugging package
flog.layout(layout.format("[~l] ~m"))
options(
"glmSparseNet.show_message" = FALSE,
"glmSparseNet.base_dir" = withr::local_tempdir()
)
# Setting ggplot2 default theme as minimal
theme_set(ggplot2::theme_minimal())2 Load data
The data is loaded from an online curated dataset downloaded from TCGA using
curatedTCGAData bioconductor package and processed.
To accelerate the process we use a very reduced dataset down to 107 variables only (genes), which is stored as a data object in this package. However, the procedure to obtain the data manually is described in the following chunk.
brca <- curatedTCGAData(
diseaseCode = "BRCA", assays = "RNASeq2GeneNorm",
version = "1.1.38", dry.run = FALSE
)brca <- TCGAutils::TCGAsplitAssays(brca, c("01", "11"))
xdataRaw <- t(cbind(assay(brca[[1]]), assay(brca[[2]])))
# Get matches between survival and assay data
classV <- TCGAbiospec(rownames(xdataRaw))$sample_definition |> factor()
names(classV) <- rownames(xdataRaw)
# keep features with standard deviation > 0
xdataRaw <- xdataRaw[, apply(xdataRaw, 2, sd) != 0] |>
scale()
set.seed(params$seed)
smallSubset <- c(
"CD5", "CSF2RB", "HSF1", "IRGC", "LRRC37A6P", "NEUROG2",
"NLRC4", "PDE11A", "PIK3CB", "QARS", "RPGRIP1L", "SDC1",
"TMEM31", "YME1L1", "ZBTB11",
sample(colnames(xdataRaw), 100)
)
xdata <- xdataRaw[, smallSubset[smallSubset %in% colnames(xdataRaw)]]
ydata <- classV3 Fit models
Fit model model penalizing by the hubs using the cross-validation function by
cv.glmHub.
fitted <- cv.glmHub(xdata, ydata,
family = "binomial",
network = "correlation",
nlambda = 1000,
options = networkOptions(
cutoff = .6,
minDegree = .2
)
)4 Results of Cross Validation
Shows the results of 1000 different parameters used to find the optimal value
in 10-fold cross-validation. The two vertical dotted lines represent the best
model and a model with less variables selected (genes), but within a standard
error distance from the best.
plot(fitted)
4.1 Coefficients of selected model from Cross-Validation
Taking the best model described by lambda.min
coefsCV <- Filter(function(.x) .x != 0, coef(fitted, s = "lambda.min")[, 1])
data.frame(
ensembl.id = names(coefsCV),
gene.name = geneNames(names(coefsCV))$external_gene_name,
coefficient = coefsCV,
stringsAsFactors = FALSE
) |>
arrange(gene.name) |>
knitr::kable()| ensembl.id | gene.name | coefficient | |
|---|---|---|---|
| (Intercept) | (Intercept) | (Intercept) | -6.8189813 |
| AMOTL1 | AMOTL1 | AMOTL1 | 0.4430643 |
| ATR | ATR | ATR | 1.2498304 |
| B3GALT2 | B3GALT2 | B3GALT2 | -0.0867011 |
| BAG2 | BAG2 | BAG2 | -0.1841676 |
| C16orf82 | C16orf82 | C16orf82 | 0.0396368 |
| CD5 | CD5 | CD5 | -1.1200445 |
| CIITA | CIITA | CIITA | 0.4256103 |
| DCP1A | DCP1A | DCP1A | 0.2994599 |
| FAM86B1 | FAM86B1 | FAM86B1 | 0.2025463 |
| FNIP2 | FNIP2 | FNIP2 | 0.6101759 |
| GDF11 | GDF11 | GDF11 | -0.2676642 |
| GNG11 | GNG11 | GNG11 | 3.0659066 |
| GREM2 | GREM2 | GREM2 | -0.2014884 |
| GZMB | GZMB | GZMB | -2.7663574 |
| HAX1 | HAX1 | HAX1 | -0.1516837 |
| IL2 | IL2 | IL2 | 0.6327083 |
| MMP28 | MMP28 | MMP28 | -0.8438024 |
| MS4A4A | MS4A4A | MS4A4A | 1.1614779 |
| NDRG2 | NDRG2 | NDRG2 | 1.1142519 |
| NLRC4 | NLRC4 | NLRC4 | -1.4434578 |
| PIK3CB | PIK3CB | PIK3CB | -0.3880002 |
| ZBTB11 | ZBTB11 | ZBTB11 | -0.3325729 |
4.2 Accuracy
## [INFO] Misclassified (11)## [INFO] * False primary solid tumour: 7## [INFO] * False normal : 4Histogram of predicted response
ROC curve
## Setting levels: control = Primary Solid Tumor, case = Solid Tissue Normal## Setting direction: controls < cases## Warning: Using `size` aesthetic for lines was deprecated in ggplot2 3.4.0.
## ℹ Please use `linewidth` instead.
## This warning is displayed once every 8 hours.
## Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
## generated.
5 Session Info
sessionInfo()## R version 4.5.1 Patched (2025-08-23 r88802)
## Platform: x86_64-pc-linux-gnu
## Running under: Ubuntu 24.04.3 LTS
##
## Matrix products: default
## BLAS: /home/biocbuild/bbs-3.22-bioc/R/lib/libRblas.so
## LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.12.0 LAPACK version 3.12.0
##
## locale:
## [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
## [3] LC_TIME=en_GB LC_COLLATE=C
## [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
##
## time zone: America/New_York
## tzcode source: system (glibc)
##
## attached base packages:
## [1] stats4 stats graphics grDevices utils datasets methods
## [8] base
##
## other attached packages:
## [1] glmSparseNet_1.27.0 TCGAutils_1.29.5
## [3] curatedTCGAData_1.31.2 MultiAssayExperiment_1.35.9
## [5] SummarizedExperiment_1.39.2 Biobase_2.69.1
## [7] GenomicRanges_1.61.5 Seqinfo_0.99.2
## [9] IRanges_2.43.5 S4Vectors_0.47.4
## [11] BiocGenerics_0.55.1 generics_0.1.4
## [13] MatrixGenerics_1.21.0 matrixStats_1.5.0
## [15] futile.logger_1.4.3 survival_3.8-3
## [17] ggplot2_4.0.0 dplyr_1.1.4
## [19] BiocStyle_2.37.1
##
## loaded via a namespace (and not attached):
## [1] RColorBrewer_1.1-3 jsonlite_2.0.0
## [3] shape_1.4.6.1 magrittr_2.0.4
## [5] magick_2.9.0 GenomicFeatures_1.61.6
## [7] farver_2.1.2 rmarkdown_2.30
## [9] BiocIO_1.19.0 vctrs_0.6.5
## [11] memoise_2.0.1 Rsamtools_2.25.3
## [13] RCurl_1.98-1.17 tinytex_0.57
## [15] htmltools_0.5.8.1 S4Arrays_1.9.1
## [17] BiocBaseUtils_1.11.2 progress_1.2.3
## [19] AnnotationHub_3.99.6 lambda.r_1.2.4
## [21] curl_7.0.0 pROC_1.19.0.1
## [23] SparseArray_1.9.1 sass_0.4.10
## [25] bslib_0.9.0 httr2_1.2.1
## [27] futile.options_1.0.1 cachem_1.1.0
## [29] GenomicAlignments_1.45.4 lifecycle_1.0.4
## [31] iterators_1.0.14 pkgconfig_2.0.3
## [33] Matrix_1.7-4 R6_2.6.1
## [35] fastmap_1.2.0 digest_0.6.37
## [37] AnnotationDbi_1.71.1 ps_1.9.1
## [39] ExperimentHub_2.99.5 RSQLite_2.4.3
## [41] filelock_1.0.3 labeling_0.4.3
## [43] httr_1.4.7 abind_1.4-8
## [45] compiler_4.5.1 bit64_4.6.0-1
## [47] withr_3.0.2 S7_0.2.0
## [49] backports_1.5.0 BiocParallel_1.43.4
## [51] DBI_1.2.3 biomaRt_2.65.16
## [53] rappdirs_0.3.3 DelayedArray_0.35.3
## [55] rjson_0.2.23 tools_4.5.1
## [57] chromote_0.5.1 glue_1.8.0
## [59] restfulr_0.0.16 promises_1.3.3
## [61] grid_4.5.1 checkmate_2.3.3
## [63] gtable_0.3.6 tzdb_0.5.0
## [65] websocket_1.4.4 hms_1.1.3
## [67] xml2_1.4.0 XVector_0.49.1
## [69] BiocVersion_3.22.0 foreach_1.5.2
## [71] pillar_1.11.1 stringr_1.5.2
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## [89] tibble_3.3.0 BiocManager_1.30.26
## [91] cli_3.6.5 processx_3.8.6
## [93] jquerylib_0.1.4 dichromat_2.0-0.1
## [95] Rcpp_1.1.0 GenomeInfoDb_1.45.12
## [97] GenomicDataCommons_1.33.1 dbplyr_2.5.1
## [99] png_0.1-8 XML_3.99-0.19
## [101] parallel_4.5.1 readr_2.1.5
## [103] blob_1.2.4 prettyunits_1.2.0
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