--preset | string | standard | Aligner preset |
--profile | string | docker | Execution backend: docker, conda, mamba, singularity, apptainer, podman, shifter, charliecloud, wave, gpu |
--pipeline-version | string | 4.1.0 | Remote nf-core/scrnaseq tag or commit (used when no local sibling checkout is found) |
--protocol | string | None | Chemistry/protocol forwarded to the aligner. Required and non-auto for standard, star, and kallisto. standard/simpleaf additionally rejects smartseq. For cellranger, cellrangerarc, and cellrangermulti any value is accepted — auto is the typical upstream recommendation |
--genome | string | — | iGenomes shortcut (GRCh38, mm10, etc.) — mutually exclusive with --fasta/--gtf and all index flags |
--igenomes-base | string | — | Base URL or local path for iGenomes (default s3://ngi-igenomes/igenomes/). Use for local mirrors or air-gapped clusters |
--fasta | path | — | Genome FASTA (.fa, .fna, .fasta, .gz variants; no whitespace in path) |
--gtf | path | — | Gene annotation GTF |
--star-index | path | — | Prebuilt STAR genome index directory |
--simpleaf-index | path | — | Prebuilt simpleaf/alevin-fry index |
--kallisto-index | path | — | Prebuilt kallisto index |
--cellranger-index | path | — | Prebuilt CellRanger or CellRanger ARC reference |
--transcript-fasta | path | — | Transcriptome FASTA for simpleaf |
--txp2gene | path | — | Transcript-to-gene mapping for simpleaf |
--barcode-whitelist | path | — | Custom barcode whitelist (per-aligner format) |
--star-feature | enum | — | STARsolo feature type: Gene, GeneFull, Gene Velocyto |
--star-ignore-sjdbgtf | flag | — | Do not use GTF for SJDB construction (required for Gene Velocyto) |
--seq-center | string | — | Sequencing center name for BAM read group tag |
--simpleaf-umi-resolution | enum | — | UMI resolution strategy for alevin-fry: cr-like, cr-like-em, parsimony, parsimony-em, parsimony-gene, parsimony-gene-em |
--kb-workflow | enum | — | Kallisto workflow: standard, lamanno, nac |
--kb-t1c | path | — | cDNA transcripts-to-capture file for RNA velocity (lamanno/nac) |
--kb-t2c | path | — | Intron transcripts-to-capture file for RNA velocity (lamanno/nac) |
--skip-cellbender | flag | — | Disable the CellBender ambient RNA removal subworkflow |
--skip-emptydrops | flag | — | Skip emptyDrops cell calling (independent of --skip-cellbender) |
--skip-fastqc | flag | — | Skip FastQC quality control |
--skip-multiqc | flag | — | Skip MultiQC report generation |
--skip-cellranger-renaming | flag | — | Skip automatic sample renaming in CellRanger modules |
--skip-cellrangermulti-vdjref | flag | — | Skip mkvdjref in cellrangermulti (when VDJ data is absent or a prebuilt --cellranger-vdj-index is supplied) |
--save-reference | flag | — | Save the built reference index for future reuse |
--save-align-intermeds | flag | — | Save alignment intermediate BAM files (disabled by default) |
--expected-cells | int | — | Override expected cell count (≥1) for all samples |
--email | string | — | Email address for pipeline completion notification |
--multiqc-title | string | — | Custom title for the MultiQC report |
--resume | flag | — | Nextflow resume (checksum-verified against prior manifest) |
--run-downstream | flag | — | Opt in to scrna_orchestrator handoff after pipeline completion |
--cellrangerarc-config | path | — | Config JSON for CellRanger ARC index construction |
--cellrangerarc-reference | string | — | Reference genome name used inside the CellRanger ARC config |
--motifs | path | — | Motif file (e.g. JASPAR) for CellRanger ARC |
--cellranger-vdj-index | path | — | Prebuilt CellRanger VDJ reference |
--gex-frna-probe-set | path | — | Probe set CSV for FFPE fixed RNA profiling (cellrangermulti) |
--gex-target-panel | path | — | Target panel CSV for targeted GEX (cellrangermulti) |
--gex-cmo-set | path | — | CMO reference CSV for multiplexed samples (cellrangermulti) |
--gex-barcode-sample-assignment | path | — | Barcode-to-sample assignment CSV for OCM multiplexing (cellrangermulti) |
--fb-reference | path | — | Feature-barcode reference CSV for antibody capture (cellrangermulti) |
--vdj-inner-enrichment-primers | path | — | V(D)J cDNA enrichment primer sequences (cellrangermulti) |
--cellranger-multi-barcodes | path | — | Multiplexed sample samplesheet for CMO/FFPE demultiplexing (cellrangermulti) |