Package: SCOPE Type: Package Title: A normalization and copy number estimation method for single-cell DNA sequencing Version: 1.25.0 Author: Rujin Wang, Danyu Lin, Yuchao Jiang Maintainer: Rujin Wang Description: Whole genome single-cell DNA sequencing (scDNA-seq) enables characterization of copy number profiles at the cellular level. This circumvents the averaging effects associated with bulk-tissue sequencing and has increased resolution yet decreased ambiguity in deconvolving cancer subclones and elucidating cancer evolutionary history. ScDNA-seq data is, however, sparse, noisy, and highly variable even within a homogeneous cell population, due to the biases and artifacts that are introduced during the library preparation and sequencing procedure. Here, we propose SCOPE, a normalization and copy number estimation method for scDNA-seq data. The distinguishing features of SCOPE include: (i) utilization of cell-specific Gini coefficients for quality controls and for identification of normal/diploid cells, which are further used as negative control samples in a Poisson latent factor model for normalization; (ii) modeling of GC content bias using an expectation-maximization algorithm embedded in the Poisson generalized linear models, which accounts for the different copy number states along the genome; (iii) a cross-sample iterative segmentation procedure to identify breakpoints that are shared across cells from the same genetic background. Depends: R (>= 3.6.0), GenomicRanges, IRanges, Rsamtools, GenomeInfoDb, BSgenome.Hsapiens.UCSC.hg19 Imports: stats, grDevices, graphics, utils, DescTools, RColorBrewer, gplots, foreach, parallel, doParallel, DNAcopy, BSgenome, Biostrings, BiocGenerics, S4Vectors Suggests: knitr, rmarkdown, WGSmapp, BSgenome.Hsapiens.UCSC.hg38, BSgenome.Mmusculus.UCSC.mm10, testthat (>= 2.1.0) VignetteBuilder: knitr biocViews: SingleCell, Normalization, CopyNumberVariation, Sequencing, WholeGenome, Coverage, Alignment, QualityControl, DataImport, DNASeq License: GPL-2 LazyData: true RoxygenNote: 6.1.1 Encoding: UTF-8 Config/pak/sysreqs: cmake make libbz2-dev liblzma-dev libuv1-dev libxml2-dev libssl-dev libx11-dev xz-utils zlib1g-dev Repository: https://bioc.r-universe.dev Date/Publication: 2026-04-28 12:51:50 UTC RemoteUrl: https://github.com/bioc/SCOPE RemoteRef: HEAD RemoteSha: 3cc19e682b10d081a198be19645cca91a77adecb NeedsCompilation: no Packaged: 2026-07-04 22:36:00 UTC; root