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Why Does Ucsc Refseq Gene Annotation File Have More Than One Annotation For A Same Transcript (Nm Id)?

Transcript ids are not unique in hg19 refseq gene annotation file. I found many ids coming more than once with different start and end on the same chromosome and strand. Does it mean duplicate gene? Do duplicate genes have same id/name?

ucsc refseq transcript

1 answer

As far as I can see, some refGenes have been also mapped on the "alternative haplotypes" chromosomes. See http://genome.ucsc.edu/FAQ/FAQdownloads#download10

$ mysql --user=genome --host=genome-mysql.cse.ucsc.edu -A -D hg19 -e '
     select * from refGene where name="NM_000593"  limit 10\G'
    *************************** 1. row ***************************
             bin: 835
            name: NM_000593
           chrom: chr6
          strand: -
         txStart: 32812985
           txEnd: 32821748
        cdsStart: 32813355
          cdsEnd: 32821593
       exonCount: 11
      exonStarts: 32812985,32814844,32815289,32815695,32816428,32816766,32818096,32818720,32819885,32820164,32820815,
        exonEnds: 32813562,32814981,32815452,32815869,32816617,32816895,32818294,32818926,32820016,32820279,32821748,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 2. row ***************************
             bin: 616
            name: NM_000593
           chrom: chr6_apd_hap1
          strand: -
         txStart: 4099989
           txEnd: 4108752
        cdsStart: 4100359
          cdsEnd: 4108597
       exonCount: 11
      exonStarts: 4099989,4101848,4102293,4102699,4103432,4103770,4105098,4105722,4106889,4107168,4107819,
        exonEnds: 4100566,4101985,4102456,4102873,4103621,4103899,4105296,4105928,4107020,4107283,4108752,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 3. row ***************************
             bin: 617
            name: NM_000593
           chrom: chr6_cox_hap2
          strand: -
         txStart: 4257513
           txEnd: 4266276
        cdsStart: 4257883
          cdsEnd: 4266121
       exonCount: 11
      exonStarts: 4257513,4259372,4259817,4260223,4260956,4261294,4262624,4263248,4264413,4264692,4265343,
        exonEnds: 4258090,4259509,4259980,4260397,4261145,4261423,4262822,4263454,4264544,4264807,4266276,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 4. row ***************************
             bin: 616
            name: NM_000593
           chrom: chr6_dbb_hap3
          strand: -
         txStart: 4094363
           txEnd: 4103126
        cdsStart: 4094733
          cdsEnd: 4102971
       exonCount: 11
      exonStarts: 4094363,4096222,4096667,4097073,4097806,4098144,4099472,4100096,4101263,4101542,4102193,
        exonEnds: 4094940,4096359,4096830,4097247,4097995,4098273,4099670,4100302,4101394,4101657,4103126,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 5. row ***************************
             bin: 617
            name: NM_000593
           chrom: chr6_ssto_hap7
          strand: -
         txStart: 4243758
           txEnd: 4252521
        cdsStart: 4244128
          cdsEnd: 4252366
       exonCount: 11
      exonStarts: 4243758,4245617,4246062,4246468,4247201,4247539,4248867,4249491,4250658,4250937,4251588,
        exonEnds: 4244335,4245754,4246225,4246642,4247390,4247668,4249065,4249697,4250789,4251052,4252521,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 6. row ***************************
             bin: 617
            name: NM_000593
           chrom: chr6_mann_hap4
          strand: -
         txStart: 4270181
           txEnd: 4278944
        cdsStart: 4270551
          cdsEnd: 4278789
       exonCount: 11
      exonStarts: 4270181,4272040,4272485,4272891,4273624,4273962,4275292,4275916,4277081,4277360,4278011,
        exonEnds: 4270758,4272177,4272648,4273065,4273813,4274091,4275490,4276122,4277212,4277475,4278944,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 7. row ***************************
             bin: 616
            name: NM_000593
           chrom: chr6_mcf_hap5
          strand: -
         txStart: 4149862
           txEnd: 4158625
        cdsStart: 4150232
          cdsEnd: 4158470
       exonCount: 11
      exonStarts: 4149862,4151721,4152166,4152572,4153305,4153643,4154971,4155595,4156762,4157041,4157692,
        exonEnds: 4150439,4151858,4152329,4152746,4153494,4153772,4155169,4155801,4156893,4157156,4158625,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,
    *************************** 8. row ***************************
             bin: 615
            name: NM_000593
           chrom: chr6_qbl_hap6
          strand: -
         txStart: 4045092
           txEnd: 4053855
        cdsStart: 4045462
          cdsEnd: 4053700
       exonCount: 11
      exonStarts: 4045092,4046951,4047396,4047802,4048535,4048873,4050203,4050827,4051992,4052271,4052922,
        exonEnds: 4045669,4047088,4047559,4047976,4048724,4049002,4050401,4051033,4052123,4052386,4053855,
           score: 0
           name2: TAP1
    cdsStartStat: cmpl
      cdsEndStat: cmpl
      exonFrames: 0,1,0,0,0,0,0,1,2,1,0,

Edit: your NM_012151 has been mapped at multiple locations on chrX because its position is ambiguous: the chrX is full of segmental duplications.

There are some records on normal chromosome as well othe than these haplotype records.

I have posted examples, I don't know if you are not able to see them.

1760    NM_012151       chrX    +       154114634       154116336       154114649       154115765       1       154114634,      154116336,      0       F8A1    cmpl    cmpl    0,
1764    NM_012151       chrX    +       154611748       154613450       154611763       154612879       1       154611748,      154613450,      0       F8A1    cmpl    cmpl    0,
1765    NM_012151       chrX    -       154686574       154688276       154687145       154688261       1       154686574,      154688276,      0       F8A1    cmpl    cmp

is it reasonable to filter these haplotype records, when we deal with the genome sequence and annotation file?

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