Genome Analysis Toolkit

Variant Discovery in High-Throughput Sequencing Data

GATK process banner

Need Help?

Search our documentation

Community Forum

Hi, How can we help?

Developed in the Data Sciences Platform at the Broad Institute, the toolkit offers a wide variety of tools with a primary focus on variant discovery and genotyping. Its powerful processing engine and high-performance computing features make it capable of taking on projects of any size. Learn more

depth of coverage total summary should not be 100.0

Answered
0

7 comments

  • Avatar
    Genevieve Brandt (she/her)

    Thank you for your post, Sinem Selvi! I want to let you know we have received your question. We'll get back to you if we have any updates or follow up questions. 

    Please see our Support Policy for more details about how we prioritize responding to questions. 

    0
    Comment actions Permalink
  • Avatar
    Genevieve Brandt (she/her)

    Hi Sinem Selvi,

    Thanks for writing into the forum so that we can look into this issue! I have a couple notes from our developer team that you can consider:

    • DepthofCoverage only handles exons and won't penalize gaps of coverage that occur in an intron.
    • The tool traverses the gene in intervals and so if this gap is in between those traversal intervals, the tool might miss a gap in coverage.
    • What does the interval list you are using look like?

    Please let us know if this applies to your situation so that we can better understand what you are seeing.

    Best,

    Genevieve

    0
    Comment actions Permalink
  • Avatar
    Sinem Selvi

    Hello,
    Thank you to consider the issue. The coverage covers the exon. You can find the interval list below. The gap occurred in the first exon of the interval list (chr15:48936802-48936966).

     

    chr15   48703186        48703576        461_282669_2200(FBN1)_66        0       -
    chr15   48704765        48704940        461_282668_2200(FBN1)_65        0       -
    chr15   48707732        48707964        461_282667_2200(FBN1)_64        0       -
    chr15   48712883        48713003        461_282666_2200(FBN1)_63        0       -
    chr15   48713754        48713883        461_282665_2200(FBN1)_62        0       -
    chr15   48714148        48714265        461_282664_2200(FBN1)_61        0       -
    chr15   48717565        48717688        461_282663_2200(FBN1)_60        0       -
    chr15   48717935        48718061        461_282662_2200(FBN1)_59        0       -
    chr15   48719763        48719970        461_282661_2200(FBN1)_58        0       -
    chr15   48720542        48720668        461_282660_2200(FBN1)_57        0       -
    chr15   48722867        48722999        461_282659_2200(FBN1)_56        0       -
    chr15   48725062        48725185        461_282658_2200(FBN1)_55        0       -
    chr15   48726790        48726910        461_282657_2200(FBN1)_54        0       -
    chr15   48729157        48729274        461_282656_2200(FBN1)_53        0       -
    chr15   48729518        48729584        461_282655_2200(FBN1)_52        0       -
    chr15   48729964        48730114        461_282654_2200(FBN1)_51        0       -
    chr15   48733917        48734043        461_282653_2200(FBN1)_50        0       -
    chr15   48736737        48736857        461_282652_2200(FBN1)_49        0       -
    chr15   48737572        48737701        461_282651_2200(FBN1)_48        0       -
    chr15   48738902        48739019        461_282650_2200(FBN1)_47        0       -
    chr15   48740964        48741090        461_282649_2200(FBN1)_46        0       -
    chr15   48744758        48744881        461_282648_2200(FBN1)_45        0       -
    chr15   48748833        48748959        461_282647_2200(FBN1)_44        0       -
    chr15   48752442        48752514        461_282646_2200(FBN1)_43        0       -
    chr15   48755278        48755437        461_282645_2200(FBN1)_42        0       -
    chr15   48756095        48756218        461_282644_2200(FBN1)_41        0       -
    chr15   48757764        48757890        461_282643_2200(FBN1)_40        0       -
    chr15   48757986        48758055        461_282642_2200(FBN1)_39        0       -
    chr15   48760134        48760299        461_282641_2200(FBN1)_38        0       -
    chr15   48760608        48760731        461_282640_2200(FBN1)_37        0       -
    chr15   48762830        48762953        461_282639_2200(FBN1)_36        0       -
    chr15   48764747        48764873        461_282638_2200(FBN1)_35        0       -
    chr15   48766451        48766574        461_282637_2200(FBN1)_34        0       -
    chr15   48766724        48766847        461_282636_2200(FBN1)_33        0       -
    chr15   48773851        48773977        461_282635_2200(FBN1)_32        0       -
    chr15   48776014        48776140        461_282634_2200(FBN1)_31        0       -
    chr15   48777570        48777693        461_282633_2200(FBN1)_30        0       -
    chr15   48779271        48779397        461_282632_2200(FBN1)_29        0       -
    chr15   48779508        48779634        461_282631_2200(FBN1)_28        0       -
    chr15   48780309        48780438        461_282630_2200(FBN1)_27        0       -
    chr15   48780564        48780690        461_282629_2200(FBN1)_26        0       -
    chr15   48782047        48782275        461_282628_2200(FBN1)_25        0       -
    chr15   48784657        48784783        461_282627_2200(FBN1)_24        0       -
    chr15   48786400        48786451        461_282626_2200(FBN1)_23        0       -
    chr15   48787319        48787457        461_282625_2200(FBN1)_22        0       -
    chr15   48787665        48787785        461_282624_2200(FBN1)_21        0       -
    chr15   48788296        48788422        461_282623_2200(FBN1)_20        0       -
    chr15   48789462        48789588        461_282622_2200(FBN1)_19        0       -
    chr15   48791181        48791235        461_282621_2200(FBN1)_18        0       -
    chr15   48795983        48796136        461_282620_2200(FBN1)_17        0       -
    chr15   48797221        48797344        461_282619_2200(FBN1)_16        0       -
    chr15   48800778        48800901        461_282618_2200(FBN1)_15        0       -
    chr15   48802240        48802366        461_282617_2200(FBN1)_14        0       -
    chr15   48805745        48805865        461_282616_2200(FBN1)_13        0       -
    chr15   48807583        48807724        461_282615_2200(FBN1)_12        0       -
    chr15   48808379        48808559        461_282614_2200(FBN1)_11        0       -
    chr15   48812855        48813014        461_282613_2200(FBN1)_10        0       -
    chr15   48818326        48818452        461_282612_2200(FBN1)_9 0       -
    chr15   48826276        48826402        461_282611_2200(FBN1)_8 0       -
    chr15   48829807        48830005        461_282610_2200(FBN1)_7 0       -
    chr15   48888479        48888575        461_282609_2200(FBN1)_6 0       -
    chr15   48892335        48892431        461_282608_2200(FBN1)_5 0       -
    chr15   48902924        48903023        461_282607_2200(FBN1)_4 0       -
    chr15   48905206        48905289        461_282606_2200(FBN1)_3 0       -
    chr15   48936802        48936966        461_282605_2200(FBN1)_2 0       -

     

    Thank you for your time.

    0
    Comment actions Permalink
  • Avatar
    James Emery

    Hi @Sinem Selvi thank you for your reply. Looking more closely at your results and your interval list file I'm not sure I fully understand what is wrong if anything with your results thus far. I notice that there is indeed a gap in coverage of a few bases in the vicinity chr15:48936966. However this does indeed to be reflected in the sample_summary output I do indeed see reflected in the last few columns of the last row that there were indeed bases without depth >= 1 covered (the 98.2 reported there. That looks correct to me. I notice that this doesn't seem to be reflected in the sample summary table output at the bottom and its undclear why except to say that it could be that number is getting rounded poorly. It might be worth digging into that if that is the issue here. 

    I see you have subsequently included the gene-list. I would make 100% sure that the intervals in this gene-list are totally covered by the .bed file you used as your interval list or else there might be missing bases in that 461_282605_2200(FBN1)_2 gene that are resulting in your gene summary file being wrong. I will note however that there is a difference in the output files from DepthOfCoverage in regards to gene-lists. Specifically when you include a --gene-list input to the tool you should see files named "...sample_gene_summary" which should have gene specific data which does not look like the output file that you listed in your initial post. Hopefully that does reflect the dropoff in coverage correctly for the gene in question? If not I would make sure the bed intervals are complete. Thank you. 

    1
    Comment actions Permalink
  • Avatar
    Sinem Selvi

    Hello James Emery thank you for your answer.

    You can see sample_gene_summary result below.

    Gene    total_coverage    average_coverage    S19_total_cvg    S19_mean_cvg    S19_granular_Q1    S19_granular_median    S19_granular_Q3    S19_%_above_1    S19_%_above_5    S19_%_above_10    S19_%_above_20    S19_%_above_50
    FBN1|NM_000138    5300016    615.14    5300016    615.14    465    >500    >500    100.0    100.0    100.0    100.0    99.8

    The result is the same as sample_summary table. "99.8" calculation looks correct. But the problem is there is no read in the first bases so, there is no even %5 coverage in the first 3 bases. If we see %100 coverage below 20 reads, we would miss if there is any gap. 

     

    Thank you

    0
    Comment actions Permalink
  • Avatar
    James Emery

    Hi @Sinem Selv

    Intersting. Its possible there is some rounding going on if there are many bases and the number of uncovered edge bases is under .1% of the overall count of bases, this warrants some thought. However I'm curious what gene you are looking at for FBN1|NM_000138. I don't see it (just its subunits) in the gene-summary list. The coverage information for that gene is suspiciously similar to the overall S1 coverage information. What exactly does your gene list look like? Currently DepthOfCoverage only supports the .refseq gene list format like this:

    #bin    name   chrom  strand txStart    txEnd  cdsStart   cdsEnd exonCount  exonStarts exonEnds   score  name2  cdsStartStat   cdsEndStat exonFrames
    74 NM_033486 chr1 - 1570602 1655859 1571125 1654257 20 1570602,1571298,1571694,1572043,1572258,1572442,1572769,1573123,1573861,1575637,1576408,1577022,1577266,1577746,1643702,1647784,1650766,1653034,1654146,1655705, 1571218,1571488,1571843,1572160,1572366,1572564,1572875,1573245,1573952,1575813,1576474,1577181,1577362,1577869,1643839,1647917,1650894,1653150,1654271,1655859, 0 CDK11B cmpl cmpl 0,2,0,0,0,1,0,1,0,1,1,1,1,1,2,1,2,0,0,-1,
    74 NM_033489 chr1 - 1570602 1655859 1571125 1654035 21 1570602,1571298,1571694,1572043,1572258,1572442,1572769,1573123,1573861,1575637,1576408,1577022,1577266,1577746,1643702,1647784,1650766,1653034,1654026,1654146,1655705, 1571218,1571488,1571843,1572160,1572366,1572564,1572875,1573245,1573952,1575813,1576474,1577181,1577362,1577869,1643839,1647917,1650894,1653150,1654073,1654271,1655859, 0 CDK11B cmpl cmpl 0,2,0,0,0,1,0,1,0,1,1,1,1,1,2,1,2,0,0,-1,-1,
    74 NM_033490 chr1 - 1570602 1655859 1571125 1577849 19 1570602,1571298,1571694,1572043,1572258,1572442,1572769,1573123,1573861,1575637,1576408,1577022,1577266,1577746,1647784,1650766,1653034,1654146,1655705, 1571218,1571488,1571843,1572160,1572366,1572564,1572875,1573245,1573952,1575813,1576474,1577181,1577362,1577869,1647917,1650894,1653150,1654271,1655859, 0 CDK11B cmpl cmpl 0,2,0,0,0,1,0,1,0,1,1,1,1,0,-1,-1,-1,-1,-1,
    74 NM_001787 chr1 - 1570602 1655859 1571125 1654257 20 1570602,1571298,1571694,1572043,1572258,1572442,1572769,1573123,1573861,1575637,1576408,1577022,1577266,1577707,1643702,1647784,1650766,1653034,1654146,1655705, 1571218,1571488,1571843,1572160,1572366,1572564,1572875,1573245,1573952,1575813,1576474,1577181,1577362,1577869,1643839,1647917,1650894,1653150,1654271,1655859, 0 CDK11B cmpl cmpl 0,2,0,0,0,1,0,1,0,1,1,1,1,1,2,1,2,0,0,-1,
    1
    Comment actions Permalink
  • Avatar
    Sinem Selvi

    Hello James Emery

    It might be rounding as it is small number of bases. But when we work on single genes, total coverage is considered in detail.

    I created the gene list from refseq as explained in GATK. The interested gene as below:

    #bin    name    chrom   strand  txStart txEnd   cdsStart        cdsEnd  exonCount       exonStarts      exonEnds        score   name2|name  cdsStartStat     cdsEndStat      exonFrames
    119     NM_000138       chr15   -       48700509        48937906        48703186        48936966        66      48700509,48704765,48707732,48712883,48713754,48714148,48717565,48717935,48719763,48720542,48722867,48725062,48726790,48729157,48729518,48729964,48733917,48736737,48737572,48738902,48740964,48744758,48748833,48752442,48755278,48756095,48757764,48757986,48760134,48760608,48762830,48764747,48766451,48766724,48773851,48776014,48777570,48779271,48779508,48780309,48780564,48782047,48784657,48786400,48787319,48787665,48788296,48789462,48791181,48795983,48797221,48800778,48802240,48805745,48807583,48808379,48812855,48818326,48826276,48829807,48888479,48892335,48902924,48905206,48936802,48937771,       48703576,48704940,48707964,48713003,48713883,48714265,48717688,48718061,48719970,48720668,48722999,48725185,48726910,48729274,48729584,48730114,48734043,48736857,48737701,48739019,48741090,48744881,48748959,48752514,48755437,48756218,48757890,48758055,48760299,48760731,48762953,48764873,48766574,48766847,48773977,48776140,48777693,48779397,48779634,48780438,48780690,48782275,48784783,48786451,48787457,48787785,48788422,48789588,48791235,48796136,48797344,48800901,48802366,48805865,48807724,48808559,48813014,48818452,48826402,48830005,48888575,48892431,48903023,48905289,48937147,48937906,  0       FBN1|NM_000138  cmpl    cmpl    0,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,0,-1,
    0
    Comment actions Permalink

Please sign in to leave a comment.

Powered by Zendesk