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The total number of pass-filtered reads is too less #90
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Hello, I also encountered this problem. Have you solved it now? |
What does |
Thank you for your reply. I found no information in the qual column in our bam file, which I think caused all reads to be filtered. |
Our bam file like this : The DB is cell barcode, UB is UMI. Our command line is as follows: Do you think there are other issues that might cause demuxlet to fail? |
Our log :
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It looks that, in both examples, the number of QC-pass reads are fine, but the number of reads overlapping SNPs do not. Perhaps the contigs do not match between BAM and VCF, or there might be problems in VCF? |
Thank you for your suggestion. We will carefully check the VCF file later. |
I have no idea about this question, so I get to use other tools: cellSNP + Vireo . (no offense)
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Thank you very much for your reply. We will try to reinstall or run demuxlet according to your suggestion. I will show the run log later. Best wishes. |
Have you solved this problem? My bam file is also a C4 platform. Look forward to receiving your reply |
I tried to re-run demuxlet after checking the above problems, but the result was still not satisfactory. I think it's a format issue with C4. In the end we used cellSNP + Vireo, but I still think demuxlet is a very nice software tool. |
my command:
demuxlet --sam ~/Project_kunlun/02_CellRanger/HUVEC_Omics/outs/gex_possorted_bam.bam --group-list ~/Project_kunlun/02_CellRanger/HUVEC_Omics/outs/filtered_feature_bc_matrix/barcodes.tsv.gz --field GT --vcf ~/Project_kunlun/00_preData/GenoType/VCF_filter/05_WeGene_HUVEC_change_ALDI.lo_hg38.vcf.gz --alpha 0 --alpha 0.5 --out Multi_HUVEC_gex_alpha
and the report:
NOTICE [2022/02/22 17:51:34] - WARNING: Suppressed a total of 4564 UMI warnings...
NOTICE [2022/02/22 17:51:34] - WARNING: Suppressed a total of 10839629 droplet/cell barcode warnings...
NOTICE [2022/02/22 17:51:34] - Finished reading 1 markers from the VCF file
NOTICE [2022/02/22 17:51:34] - Total number input reads : 310066990
NOTICE [2022/02/22 17:51:34] - Total number valid droplets observed : 15480
NOTICE [2022/02/22 17:51:34] - Total number valid SNPs observed : 1
NOTICE [2022/02/22 17:51:34] - Total number of read-QC-passed reads : 198500170
NOTICE [2022/02/22 17:51:34] - Total number of skipped reads with ignored barcodes : 36629150
NOTICE [2022/02/22 17:51:34] - Total number of non-skipped reads with considered barcodes : 161816433
NOTICE [2022/02/22 17:51:34] - Total number of gapped/noninformative reads : 161816426
NOTICE [2022/02/22 17:51:34] - Total number of base-QC-failed reads : 0
NOTICE [2022/02/22 17:51:34] - Total number of redundant reads : 0
NOTICE [2022/02/22 17:51:34] - Total number of pass-filtered reads : 7
NOTICE [2022/02/22 17:51:34] - Total number of pass-filtered reads overlapping with multiple SNPs : 0
NOTICE [2022/02/22 17:51:34] - Starting to prune out cells with too few reads...
NOTICE [2022/02/22 17:51:34] - Finishing pruning out 0 cells with too few reads...
NOTICE [2022/02/22 17:51:34] - Starting to identify best matching individual IDs
NOTICE [2022/02/22 17:51:34] - Identifying best-matching individual..
When I checked the operation report, I found that the number of reads I screened was only 7. Is there any recommendation for screening criteria?
Thanks for your reply.
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