# Sarek Issue Classification (Clean)

**Date:** 2026-02-16 | **Open Issues:** 238

## Summary

| Category                        | Count   |
| ------------------------------- | ------- |
| Quick Win                       | 13      |
| Syntax Compliance               | 2       |
| Optimization (Runtime)          | 11      |
| Giant Genomes                   | 2       |
| Bug: Join Mismatch / Dataflow   | 7       |
| Bug: Input / Samplesheet        | 13      |
| Bug: CRAM / BAM Output          | 6       |
| Bug: Container                  | 3       |
| Tool: ASCAT                     | 11      |
| Tool: CNVkit                    | 15      |
| Tool: Control-FREEC             | 3       |
| Tool: Mutect2                   | 4       |
| Tool: GATK / HaplotypeCaller    | 32      |
| Tool: VEP / snpEff              | 13      |
| Tool: Sentieon                  | 6       |
| Tool: DeepVariant / DeepSomatic | 5       |
| Tool: Strelka                   | 3       |
| Tool: Manta                     | 2       |
| Tool: LoFreq                    | 2       |
| Tool: DragMap                   | 2       |
| Tool: TIDDIT                    | 1       |
| Tool: BCFTools                  | 4       |
| Resume / Restart                | 2       |
| UMI                             | 6       |
| Documentation                   | 9       |
| Testing / CI                    | 5       |
| Intervals / BED                 | 4       |
| Error Messages / UX             | 4       |
| Reference Files / Genome        | 9       |
| New Tool Requests               | 7       |
| Preprocessing / Alignment       | 8       |
| Platform / Infrastructure       | 4       |
| QC Enhancements                 | 3       |
| Tool: Freebayes                 | 2       |
| Tool: MSISensor                 | 1       |
| MultiQC / Reporting             | 1       |
| Feature Backlog                 | 13      |
| **Total**                       | **238** |

---

## Quick Win (13)

| #    | Title                                                                       | Labels      | Age   |
| ---- | --------------------------------------------------------------------------- | ----------- | ----- |
| 2082 | Fixed the missed rename in the annotate.config to be `snv_consensus_calling | -           | 60d   |
| 2034 | No automatic email recieved after successful completion of pipeline in Sare | bug         | 121d  |
| 2022 | Unclear docu on non-human genomes                                           | bug, docs   | 125d  |
| 2012 | Move tests/config/bcfann_test_columns.txt to test-datasets repo             | -           | 136d  |
| 1946 | GATK Joint Germline Variant Calling - FilterVariantTranches - Documentation | bug         | 201d  |
| 1537 | Check if any empty folders are created                                      | bug         | 634d  |
| 1437 | Minor: empty output folder for fastp created (see aws ful size tests)       | bug         | 703d  |
| 1427 | Update docs: Haplotypecaller is fine without BQSR (got nothing to do with d | bug         | 718d  |
| 1282 | The pipeline should fail early when --no_intervals is used with joint germl | bug         | 858d  |
| 1281 | Readme uses bith light and dark logo at all times                           | bug         | 858d  |
| 1187 | Improvement: make --tools case insensitive                                  | enhancement | 912d  |
| 877  | Put annotation in same output structure, regardless of -step entry point    | enhancement | 1172d |
| 845  | Use -cancer for snpeff samples                                              | enhancement | 1187d |

---

## Syntax Compliance (2)

| #    | Title                                                          | Labels      | Age  |
| ---- | -------------------------------------------------------------- | ----------- | ---- |
| 1976 | Plan for migrating sarek to accordance with Nextflow LS        | enhancement | 158d |
| 1250 | Stop ignoring parameter validation, lenient mode is sufficient | -           | 878d |

---

## Optimization (Runtime) (11)

| #    | Title                                                                       | Labels      | Age   |
| ---- | --------------------------------------------------------------------------- | ----------- | ----- |
| 2132 | Cram still beign created in the "work folder" even if I don't need to it be | -           | 5d    |
| 2023 | Only calculate DICT when needed                                             | enhancement | 125d  |
| 1840 | Why is the `ENSEMBLVEP_VEP` process not ran on chunks?                      | enhancement | 330d  |
| 1332 | Java applications request too much memory                                   | bug         | 823d  |
| 1141 | Pass on the number of tumor samples per patient                             | enhancement | 958d  |
| 1127 | Sarek copies dbSNP for each invocation of HaplotypeCaller                   | bug         | 970d  |
| 1121 | Optimisation: Drop samtools index processes                                 | enhancement | 971d  |
| 1076 | Feature: Pipe bamtofastq conversion for speed up                            | enhancement | 985d  |
| 1072 | Revisit resource requests                                                   | -           | 986d  |
| 1038 | Mosdepth in sarek runs default with --fast-mode. Could this be made configu | enhancement | 997d  |
| 880  | Automatic identification of callable regions to parallelize BQSR and varian | enhancement | 1168d |

---

## Giant Genomes (2)

| #    | Title                                  | Labels           | Age   |
| ---- | -------------------------------------- | ---------------- | ----- |
| 1018 | Please add CSI indexing                | enhancement      | 1012d |
| 900  | tabix fails for large chromosome sizes | bug, enhancement | 1151d |

---

## Bug: Join Mismatch / Dataflow (7)

| #    | Title                                                                       | Labels   | Age  |
| ---- | --------------------------------------------------------------------------- | -------- | ---- |
| 2136 | Error "Detected join operation duplicate emission on left channel" when usi | -        | 4d   |
| 2110 | Join mismatch error                                                         | moreinfo | 26d  |
| 2078 | Pipeline Error: Join mismatch for the following entries:                    | bug      | 66d  |
| 2064 | Detected join operation duplicate emission on right channel                 | bug      | 75d  |
| 2036 | Bug Report — Join mismatch when using mutect2 tool                          | bug      | 117d |
| 1790 | Join mismatch/DataflowVariable assignment error                             | bug      | 377d |
| 1455 | Additional documentation for specifying ext.args for Mutect2 to avoid join  | docs     | 683d |

---

## Bug: Input / Samplesheet (13)

| #    | Title                                                                       | Labels                        | Age   |
| ---- | --------------------------------------------------------------------------- | ----------------------------- | ----- |
| 1658 | Wrong sample names in multiqc general table                                 | bug                           | 514d  |
| 1655 | A USER ERROR has occurred: Bad input: Sample $name is not in BAM header: [. | bug                           | 515d  |
| 1629 | Avoid misleading error messages concerning sample-sheets                    | bug                           | 538d  |
| 1528 | Different sample name handling causes issues with merging                   | bug                           | 640d  |
| 1503 | same sample name over multiple patient doest not fail input schema validati | bug, samplesheet              | 650d  |
| 1451 | Non-unique of `sample` values across several patients causes name clashes   | bug, input validation         | 688d  |
| 1293 | Samplesheets with more normal-samples per patient pass nf-validation        | bug, input validation         | 846d  |
| 1279 | Parameter validation doesn't catch of unzipped vcf is supplied              | bug                           | 859d  |
| 1276 | lane should be optional if unique                                           | enhancement                   | 860d  |
| 1255 | flowcellLaneFromFastq cannot handle weird fastq header                      | bug                           | 873d  |
| 1152 | Make patient optional in the samplesheet                                    | enhancement                   | 950d  |
| 989  | Add optional capability of adding the BED file into samplesheet             | enhancement                   | 1046d |
| 97   | Check BED compatibility                                                     | enhancement, input validation | 2211d |

---

## Bug: CRAM / BAM Output (6)

| #    | Title                                                                       | Labels                  | Age  |
| ---- | --------------------------------------------------------------------------- | ----------------------- | ---- |
| 2086 | Enable "save_output_as_bam: True“ for parabricks                            | enhancement, parabricks | 48d  |
| 1919 | Invalid CRAM file: some paired and mapped reads missing from recalibrated C | bug                     | 246d |
| 1914 | Work with split chromosome and cram                                         | bug                     | 257d |
| 1894 | Missing conversion from bam to cram when starting from "--step prepare_reca | question                | 277d |
| 1424 | Allow cram in mapping step                                                  | CRAM                    | 722d |
| 1182 | Managing CRAM compression level                                             | enhancement             | 913d |

---

## Bug: Container (3)

| #    | Title                                      | Labels | Age  |
| ---- | ------------------------------------------ | ------ | ---- |
| 1519 | Sarek test run unable to find docker image | bug    | 646d |
| 1362 | Check docker.runOptions for spark          | -      | 788d |
| 1233 | Question regarding sarek dockers :         | -      | 885d |

---

## Tool: ASCAT (11)

| #    | Title                                                                      | Labels        | Age   |
| ---- | -------------------------------------------------------------------------- | ------------- | ----- |
| 2089 | ASCAT Exome processing steps incorrect for hg38                            | bug           | 38d   |
| 1837 | ASCAT not running in sarek                                                 | bug           | 335d  |
| 1526 | WES files provided by ascat author                                         | docs          | 640d  |
| 1512 | Copy-Number Enhancements - Ascat joint calling                             | enhancement   | 649d  |
| 1510 | Copy-Number Enhancements - Ascat penality                                  | enhancement   | 649d  |
| 1432 | ASCAT WES reference resources                                              | enhancement   | 710d  |
| 1375 | improve documentation to point out that when using ASCAT and the Format in | bug           | 762d  |
| 1346 | No parameter for "penalty" in ASCAT segmentation                           | enhancement   | 807d  |
| 1323 | Error with ASCAT                                                           | bug           | 830d  |
| 1176 | Add Ascat tumor-only & targeted mode                                       | enhancement   | 922d  |
| 1020 | Error while running ASCAT                                                  | bug, moreinfo | 1010d |

---

## Tool: CNVkit (15)

| #    | Title                                                               | Labels                | Age   |
| ---- | ------------------------------------------------------------------- | --------------------- | ----- |
| 2000 | CNVKit Tutorial / Improved Documentation / Track issues with CNVkit | enhancement           | 139d  |
| 1981 | Improve cnvkit tumor_only mode                                      | -                     | 157d  |
| 1895 | Bump samtools in cnvkit                                             | -                     | 272d  |
| 1625 | `cnvkit` output files are missing                                   | bug                   | 545d  |
| 1610 | CNVKIT doesn't accept \*.list format interval files                 | bug, input validation | 562d  |
| 1606 | cnvkit reference titling broken                                     | bug                   | 564d  |
| 1591 | base.conf does not override module's process.label for CNVKIT_BATCH | bug                   | 584d  |
| 1562 | Pooled normals for CNVkit                                           | enhancement           | 613d  |
| 1322 | How to output allele-specific copy number in CNVkit?                | enhancement           | 830d  |
| 1292 | CNVKIT - Export cns file into seg format for IGV                    | -                     | 850d  |
| 1251 | Output files for CNVkit incorrect                                   | bug                   | 878d  |
| 1234 | Add gene annotation on cnvkit for WGS (--annotate)                  | enhancement           | 885d  |
| 972  | Help with understanding & manipulate CNVkit output                  | docs                  | 1063d |
| 924  | CNVkit reference issue for WGS tumor-only samples                   | bug                   | 1115d |
| 863  | Improve CNVKit                                                      | enhancement           | 1180d |

---

## Tool: Control-FREEC (3)

| #    | Title                                                                       | Labels                | Age   |
| ---- | --------------------------------------------------------------------------- | --------------------- | ----- |
| 1449 | Sarek possibly supplying the wrong number of args for CONTROLFREEC_ASSESSSI | bug                   | 694d  |
| 1376 | control-freec throws an error when running WES data in tumor-only mode beca | bug                   | 762d  |
| 808  | controlfreec with multiple ploidy values results in plotting error          | bug, input validation | 1200d |

---

## Tool: Mutect2 (4)

| #    | Title                                                                       | Labels                        | Age  |
| ---- | --------------------------------------------------------------------------- | ----------------------------- | ---- |
| 1883 | Enable Mutect2 force-calling using --alleles flag                           | enhancement, good first issue | 289d |
| 1766 | mutect2-realigned .bam output                                               | enhancement                   | 404d |
| 1546 | FILTERMUTECTCALLS is not run for tumor-only samples when there is no germli | bug                           | 629d |
| 1049 | Allow genotyping germline sites with Mutect 2                               | enhancement                   | 992d |

---

## Tool: GATK / HaplotypeCaller (32)

| #    | Title                                                                       | Labels                | Age              |
| ---- | --------------------------------------------------------------------------- | --------------------- | ---------------- | ----------- | ----- |
| 2140 | Constant OOM error for GetPileupSummaries on EC2                            | bug                   | 3d               |
| 2131 | OOM error for GetPileupSummaries on EC2                                     | question              | 5d               |
| 2118 | Silent failure in FASTQ_PREPROCESS_GATK for multi-lane samples (no outputs  | bug                   | 14d              |
| 2097 | GATK BaseRecalibrator interval usage affects variant calling                | question              | 32d              |
| 2040 | 401 Unauthorized error from Singularity gatk                                | bug                   | 115d             |
| 1949 | Potentially incompatible outputs are generated with BAM output and Spark Ma | bug                   | 194d             |
| 1918 | GATK4_MARKDUPLICATES not respecting --TMP_DIR                               | bug                   | 248d             |
| 1901 | GATK GenotypeGVCFs memory issue when including non-variant-sites and using  | -                     | 265d             |
| 1893 | Add option to run GATK FilterByOrientationBias                              | enhancement           | 278d             |
| 1880 | GATK tooling update to fix Bug in Markduplicates                            | -                     | 291d             |
| 1870 | GATK joint variant calling with option --include-non-variant-sites fails du | enhancement           | 304d             |
| 1822 | single germline sample VCF quality control                                  | enhancement           | 342d             |
| 1772 | How to prevent ApplyBQSR from passing intervals to prevent it from dropping | community-feedback    | 396d             |
| 1722 | the vcf file from haplotypecaller was not annotated by snpeff and vep       | question              | 470d             |
| 1645 | error running BQSR: cannot remove tmp file                                  | bug                   | 529d             |
| 1617 | GATK4_HAPLOTYPECALLER not running in parallel                               | bug                   | 555d             |
| 1616 | Restart from step variantcalling fails on haplotypecaller                   | bug                   | 556d             |
| 1598 | GATK4_MARKDUPLICATES : Not a valid path value type: java.util.ArrayList     | bug                   | 579d             |
| 1586 | Add an option to optionally use the GATK VariantFiltration instead of VQSR  | enhancement           | 586d             |
| 1434 | GenomicsDBImport fails when no_intervals is set to true                     | bug, input validation | 709d             |
| 1389 | Default Bed file GATK.GRCh37 contains timings: remove those                 | bug                   | 744d             |
| 1356 | ngscheckmate_bed is set incorrectly for GATK.GRCh37                         | bug                   | 795d             |
| 1329 | haplotypecaller output unusual behavior without dbsnps/known-sites          | bug                   | 824d             |
| 1146 | Better "error handling" around FilterVariantTranches                        | enhancement           | 954d             |
| 959  | Use GATK small_exac_common_3.hg38.vcf.gz as default germline_resource       | enhancement           | 1080d            |
| 923  | joint genotyping optimal strategy                                           | help wanted           | 1117d            |
| 911  | Add `GATK4_CALIBRATEDRAGSTRMODEL`                                           | enhancement           | 1126d            |
| 908  | Add option for outputting gvcfs instead of vcfs                             | enhancement           | 1131d            |
| 902  | Reference Allele Error on dbSNP on step HaplotypeCaller CNN1                | docs                  | 1144d            |
| 899  | CalculateContamination table needs to be sorted                             | -                     | 1154d            |
| 881  | --genome flag, allow for AWS iGenomes GATK.b37                              | enhancement           | 1167d            |
| 868  | Population calling                                                          | joint calling         | ensemble calling | enhancement | 1178d |

---

## Tool: VEP / snpEff (13)

| #    | Title                                                                       | Labels      | Age   |
| ---- | --------------------------------------------------------------------------- | ----------- | ----- |
| 1980 | Snpeff databases can not be downloaded                                      | bug         | 157d  |
| 1948 | VEP Cache - AWS S3 Access ID Error                                          | bug         | 195d  |
| 1854 | Missing c. and p. Position in VEP Annotation & OMIM/RefSeq Intersection Iss | bug         | 319d  |
| 1691 | `vep_loftee` doesn't add the expected columns to `INFO/CSQ`                 | bug         | 482d  |
| 1654 | use custom snpeff database, such as Candian.aruis                           | bug         | 517d  |
| 1549 | Please add VEP plugins (Conservation and Condel)                            | enhancement | 626d  |
| 1355 | Allow to specify a local config file for snpEff                             | enhancement | 796d  |
| 1354 | Allow for snpEff db without versions                                        | enhancement | 796d  |
| 1326 | Misleading info in error message concerning invalid path to VEP-cache       | bug         | 825d  |
| 1265 | AlphaMissense VEP Plugin Integration                                        | enhancement | 867d  |
| 984  | Need to document snpeff_cache/vep_cache clashes with snpeff_version/vep_ver | enhancement | 1053d |
| 879  | Variant annotation for non-coding genes                                     | enhancement | 1171d |
| 878  | annotation enhancement                                                      | enhancement | 1172d |

---

## Tool: Sentieon (6)

| #    | Title                                                                       | Labels                          | Age  |
| ---- | --------------------------------------------------------------------------- | ------------------------------- | ---- |
| 1869 | Refactor Sentieon preprocessing Modules into Subworkflow                    | sentieon                        | 307d |
| 1865 | Remove license file support for Sentieon                                    | sentieon                        | 311d |
| 1548 | Remove duplicated config-snippet for SENTIEON_GVCFTYPER                     | sentieon, refactor              | 626d |
| 1480 | Missing input validation: Error handle for sentieon-dedup with non-sentieon | bug, input validation, sentieon | 663d |
| 1399 | Sentieon bundle file                                                        | bug, sentieon                   | 738d |
| 1296 | ContaminationAssessment in the Sentieon-subworkflows TNseq and TNscope?     | enhancement, sentieon           | 845d |

---

## Tool: DeepVariant / DeepSomatic (5)

| #    | Title                                                                       | Labels      | Age   |
| ---- | --------------------------------------------------------------------------- | ----------- | ----- |
| 2081 | nf-core pipelines download fails: missing DeepVariant container (offline in | bug         | 61d   |
| 1583 | DeepVariant params addition request:                                        | enhancement | 587d  |
| 1440 | Add DeepSomatic to the Sarek Pipeline                                       | -           | 699d  |
| 1066 | Future proof Deepvariant output                                             | -           | 986d  |
| 682  | Deepvariant requires additional cli option for recalibrated BAM files       | bug         | 1304d |

---

## Tool: Strelka (3)

| #    | Title                                                             | Labels                | Age   |
| ---- | ----------------------------------------------------------------- | --------------------- | ----- |
| 2127 | Strelka2 stuck at 99% for over 24 hours (reopen)                  | -                     | 8d    |
| 1306 | Strelka requires `.crai` files to match format `PREFIX.cram.crai` | bug, input validation | 836d  |
| 1023 | Problem running Strelka due to Python version difference          | bug                   | 1007d |

---

## Tool: Manta (2)

| #    | Title                                                     | Labels | Age  |
| ---- | --------------------------------------------------------- | ------ | ---- |
| 1611 | ERROR > SAREK_BAM_VARIANT_CALLING_GERMLINE (MANTA)        | bug    | 561d |
| 1387 | Manta (germline) terminated with an error exit status (1) | bug    | 746d |

---

## Tool: LoFreq (2)

| #    | Title                                                                       | Labels        | Age  |
| ---- | --------------------------------------------------------------------------- | ------------- | ---- |
| 1963 | LoFreq doesn't run even when tumor/normal status is omitted                 | bug, question | 166d |
| 1588 | Add lofreq call-parallel (tumor-only) and lofreq somatic as variant callers | enhancement   | 584d |

---

## Tool: DragMap (2)

| #    | Title                                         | Labels        | Age  |
| ---- | --------------------------------------------- | ------------- | ---- |
| 1555 | DRAGMAP_Alignment_error                       | bug, moreinfo | 615d |
| 1445 | DragMap fails if --trim_fastq flag is enabled | bug           | 697d |

---

## Tool: TIDDIT (1)

| #    | Title                                                                       | Labels | Age  |
| ---- | --------------------------------------------------------------------------- | ------ | ---- |
| 1441 | TIDDIT_SV produces `*.tiddit.ploidies.tab` but not `*.tiddit.vcf`, timing o | bug    | 698d |

---

## Tool: BCFTools (4)

| #    | Title                                                                  | Labels      | Age   |
| ---- | ---------------------------------------------------------------------- | ----------- | ----- |
| 2085 | Question: Advanced filtering with --bcftools_filter_criteria parameter | -           | 59d   |
| 885  | Replace the locale module add_info_to_vcf with bcftools                | enhancement | 1166d |
| 826  | BCFTools use region/target file                                        | enhancement | 1193d |
| 699  | Pass target-bed-file to bcftools/stats?                                | enhancement | 1294d |

---

## Resume / Restart (2)

| #    | Title                                                                       | Labels | Age  |
| ---- | --------------------------------------------------------------------------- | ------ | ---- |
| 2042 | How to skip rerunning tasks that have already been completed when using the | bug    | 108d |
| 1615 | Restart from step variantcalling fails on NGScheckmate                      | bug    | 556d |

---

## UMI (6)

| #    | Title                                                | Labels      | Age   |
| ---- | ---------------------------------------------------- | ----------- | ----- |
| 2114 | UMI-aware Sarek                                      | question    | 18d   |
| 1719 | Provide default UMI/trimming library specific values | enhancement | 472d  |
| 1714 | Tutorial: UMI                                        | enhancement | 473d  |
| 1316 | Fix UMI-link                                         | bug         | 831d  |
| 907  | Support for Illumina ORA format                      | enhancement | 1131d |
| 871  | Support for UMI FASTQ                                | enhancement | 1175d |

---

## Documentation (9)

| #    | Title                                                                       | Labels                         | Age   |
| ---- | --------------------------------------------------------------------------- | ------------------------------ | ----- |
| 2107 | Create a contributors guide with specifics for this pipelines               | -                              | 26d   |
| 1861 | Q: how to deal with the fact that msisensor pro is free for non-commercial  | -                              | 317d  |
| 1717 | Tutorial: long reads analysis                                               | enhancement                    | 473d  |
| 1713 | Tutorial: CNV calling                                                       | enhancement, help wanted       | 473d  |
| 1704 | Proposals for Sarek Tutorials on use-cases                                  | help wanted, docs, testing     | 475d  |
| 1643 | Sarek How Tos                                                               | -                              | 530d  |
| 1576 | Test and document that Sarek can handle input-samplesheets with mixed sampl | enhancement, docs, samplesheet | 600d  |
| 852  | add more info about which process are affected by --wes                     | enhancement, docs              | 1186d |
| 848  | Provide typical usage of --tools                                            | enhancement                    | 1187d |

---

## Testing / CI (5)

| #    | Title                                                                | Labels                   | Age  |
| ---- | -------------------------------------------------------------------- | ------------------------ | ---- |
| 2090 | Enhance tests/variantcalling_all with all tools                      | -                        | 34d  |
| 1958 | Use nft-csv to better test csv files                                 | enhancement              | 180d |
| 1860 | Duplicate test-data inputs                                           | testing                  | 317d |
| 1699 | Get a full nf-test report in cis                                     | enhancement, help wanted | 475d |
| 1544 | Add more intricate CI tests to verify multiple/single lanes run well | testing                  | 629d |

---

## Intervals / BED (4)

| #    | Title                                                                       | Labels            | Age   |
| ---- | --------------------------------------------------------------------------- | ----------------- | ----- |
| 1523 | port CREATE_INTERVALS_BED to nf-core/modules                                | enhancement       | 641d  |
| 1148 | Intervals BED file processing: remove headers and validate any timing infor | enhancement       | 952d  |
| 934  | Perform a compatibility check between bed file specified at --targets and r | enhancement       | 1108d |
| 534  | [BUG] Scatter/gather of intervals uses misleading filename (content is fine | bug, Low priority | 1384d |

---

## Error Messages / UX (4)

| #    | Title                                                           | Labels                        | Age  |
| ---- | --------------------------------------------------------------- | ----------------------------- | ---- |
| 1978 | Re-work all error messages                                      | -                             | 158d |
| 1685 | No status is 0 - but contains tumor only sample error message   | bug, help wanted              | 492d |
| 1435 | Add some docs crosslinking the warning about kubernetes and GLS | -                             | 709d |
| 1416 | Better error message for empty fastq files                      | enhancement, input validation | 725d |

---

## Reference Files / Genome (9)

| #    | Title                                                                       | Labels                | Age   |
| ---- | --------------------------------------------------------------------------- | --------------------- | ----- |
| 2072 | Prepare reference before run pipeline                                       | bug                   | 68d   |
| 1741 | Check that GZI index provided if using a gzipped FASTA                      | enhancement, moreinfo | 443d  |
| 1650 | Add pattern for all reference files                                         | enhancement           | 521d  |
| 1649 | error when use custom reference                                             | bug                   | 521d  |
| 1308 | Be consistent with the meta map for the reference files                     | -                     | 835d  |
| 1253 | Error out when user provides both custom genome files (fasta, fai, dict, et | enhancement           | 874d  |
| 995  | Check & update reference files                                              | enhancement           | 1039d |
| 829  | Add T2T reference                                                           | enhancement           | 1193d |
| 712  | BWA index isn't coppied over with using save-reference option               | bug, Azure            | 1273d |

---

## New Tool Requests (7)

| #    | Title                                            | Labels                          | Age   |
| ---- | ------------------------------------------------ | ------------------------------- | ----- |
| 2056 | Inquiry about integrating Octopus variant caller | enhancement                     | 90d   |
| 2030 | varlociraptor issues                             | -                               | 122d  |
| 1950 | New variant caller VarScan                       | enhancement                     | 191d  |
| 1630 | AGeNT                                            | enhancement                     | 538d  |
| 875  | Add IGV visualization for alignment files        | enhancement                     | 1173d |
| 95   | Community feedback: consider other tools         | enhancement, community-feedback | 2211d |

Note: DeepSomatic (#1440) already tracked under Tool: DeepVariant/DeepSomatic.

---

## Preprocessing / Alignment (8)

| #    | Title                                                     | Type        | Labels      | Age   |
| ---- | --------------------------------------------------------- | ----------- | ----------- | ----- |
| 1889 | bwa mem does not align to ALT chromosomes                 | Bug         | -           | 282d  |
| 1492 | Error creating symlinks to BWAIndex                       | Bug         | bug         | 656d  |
| 1452 | bwa index can not build                                   | Bug         | bug         | 685d  |
| 1443 | No reads for mitochondrial chromosome after recalibration | Bug         | bug         | 697d  |
| 838  | Add samtools markdup as duplicate marking alternative     | Enhancement | enhancement | 1188d |
| 1367 | sambamba/markdup                                          | Enhancement | enhancement | 780d  |
| 830  | Customize Preprocessing based on each tool                | Enhancement | enhancement | 1192d |
| 922  | Port local sarek subworkflows to modules                  | Enhancement | enhancement | 1117d |

---

## Platform / Infrastructure (4)

| #    | Title                                          | Labels      | Age  |
| ---- | ---------------------------------------------- | ----------- | ---- |
| 1853 | Sarek goes GPU - parabricks integration        | -           | 320d |
| 1843 | ARM pipeline run end to end                    | -           | 328d |
| 1447 | ERROR Timeout waiting for connection from pool | bug         | 696d |
| 1446 | meta-sarek: One pipeline to rule them all      | enhancement | 696d |

---

## QC Enhancements (3)

| #    | Title                                                      | Labels      | Age   |
| ---- | ---------------------------------------------------------- | ----------- | ----- |
| 1379 | Run BAM QC after alignment                                 | enhancement | 759d  |
| 944  | Add target capture performance via Picard HsMetrics module | enhancement | 1094d |
| 962  | Support for FilterSamReads                                 | enhancement | 1075d |

---

## Tool: Freebayes (2)

| #    | Title                                                 | Labels                | Age   |
| ---- | ----------------------------------------------------- | --------------------- | ----- |
| 1900 | Make Freebayes --min-alternate-fraction more explicit | enhancement, moreinfo | 265d  |
| 453  | gvcf option for freebayes                             | enhancement           | 1551d |

---

## Tool: MSISensor (1)

| #    | Title                             | Labels      | Age  |
| ---- | --------------------------------- | ----------- | ---- |
| 1599 | Add msisensor-pro tumor-only mode | enhancement | 578d |

---

## MultiQC / Reporting (1)

| #    | Title                                               | Labels | Age  |
| ---- | --------------------------------------------------- | ------ | ---- |
| 1926 | multiqc report contents when using --step parameter | -      | 242d |

---

## Feature Backlog (12)

Remaining enhancements and bugs not fitting neatly into other categories.

| #    | Title                                                    | Labels      | Age   |
| ---- | -------------------------------------------------------- | ----------- | ----- |
| 2015 | Pipeline interrupts immediately after launching          | bug         | 136d  |
| 2006 | vcftools bug interrupts execution under --joint_germline | bug         | 138d  |
| 1716 | Check if flowcell id is uniform in a fastq file          | enhancement | 473d  |
| 1715 | Add library metadata and extend read group info          | enhancement | 473d  |
| 1637 | A question with hg19                                     | question    | 535d  |
| 1429 | chrFiles/GCcontentProfile error (Control-FREEC related)  | bug         | 713d  |
| 1142 | Time course sampling analysis                            | enhancement | 957d  |
| 1125 | Adding more keys in INFO and FORMAT fields               | enhancement | 970d  |
| 1124 | Joint calling with mpileup                               | enhancement | 970d  |
| 1029 | Stop Sarek early on low quality input                    | enhancement | 1003d |
| 755  | Start pipeline from --joint_germline step                | enhancement | 1244d |
| 523  | Haplotype aware effect prediction                        | enhancement | 1397d |
| 495  | Tumor mutational burden (TMB) scoring                    | enhancement | 1440d |
| 98   | Sex determination option                                 | enhancement | 2211d |
