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Hochhalter et al.                                                                                                                                                                Association between HCMV and GBM

           Table 1: Studies evaluating presence of HCMV in gliomas
            Authors                 Number of samples analyzed   Detection method                    Analyte
                     [3]
            Cobbs et al.,  2002     27/27 gliomas FFPE           IHC for IE1-72, pp65, p52           Protein
                                    10/10 gliomas                ISH biotinylated oligonucleotide probe   RNA, DNA
                                                                 specific for HCMV early gene mRNA
                                                                 ISH digoxigenin-labeled HCMV total
                                                                 genome DNA probe
                                    7/9 gliomas                  Nested PCR for gB (UL55)             DNA
                                    2/2 GBM                      EM-IHC anti-pp65 mAb and gold particles  Viral particles
            Lau et al., [37]  2005  0/17 gliomas FFPE            IHC for HCMV cocktail, pp65         Protein
                                    0/2 ODG FFPE
                                    0/3 ependymomas FFPE
                                    0/17 gliomas FFPE            ISH digoxigenin-labeled probe specific for   RNA, DNA
                                    0/2 ODG FFPE                 HCMV early gene mRNA
                                    0/3 ependymomas FFPE         ISH digoxigenin-labeled probe specific for
                                                                 HCMV DNA (pp65 and pp150)
                                    0/17 gliomas FFPE            PCR for gB (UL55)                    DNA
                                    0/2 ODG FFPE
                                    0/3 ependymomas FFPE
            Sabatier et al.,  2005  9/116 CNS tumors (15         IHC for IE1, p52                  DNA, Protein
                       [38]
                                    ependymomas, 81 GBM, 20 ODG)   ISH biotinylated HCMV DNA probe
                                    TMA
                                    1/25 gliomas fresh frozen
                         [39]
            Poltermann et al.,  2006  0/73 CNS tumors (38 gliomas, 29   IHC for IE, EA, pp65         Protein
                                    meningiomas, 6 ACNs) FFPE
                                    0/77 (40 gliomas, 31 meningiomas,   Nested PCR for IE1 and gB (UL55)  DNA
                                    6 ACNs)
                      [40]
            Mitchell et al.,  2008  42/45 GBMs FFPE              IHC for IE1-72                      Protein
                                    30/33 GBMs FFPE              IHC for pp65
                                    16/16 GBMs FFPE              ISH FITC-conjugated 40-mer probes for   DNA
                                                                 HCVM IE1
                                                                 ISH biotinylated HCMV total genome DNA
                                                                 probe
                                    16/17 GBM primary cultures   IHC for IE1, pp65 gB, and pp28
                                    21/34 GBMs fresh frozen      PCR for gB (UL55)                    DNA
                                    13/17 GBM primary cultures
            Scheurer et al.,  2008  21/21 GBM FFPE               IHC for IE1-72 and ISH fluorescein-labeled   Protein, DNA
                       [41]
                                    9/12 AA FFPE                 oligonucleotide total HCMV genome DNA
                                    14/17 LGG FFPE               probe mixture
            Slinger et al.,  2010   20/21 gliomas FFPE           IHC for IEA, US28                   Protein
                      [29]
                     [42]
            Lucas et al.,  2011     25/49 GBMs FFPE              IHC for pp65                        Protein
                                    8/49 GBMs FFPE               IHC for IE1
                          [43]
            Ranganathan et al.,  2012  75/75 GBM FFPE            PCR using 12 HCMV primer pairs       DNA
                                    12/12 GBM fresh frozen       PCR using 19 HCMV primer pairs
                      [44]
            Rahbar et al.,  2012    79/80 GBMs FFPE              IHC for IEA                         Protein
                                    76/80 GBMs FFPE              IHC for LA
                                    6/6 selected GBM FFPE        ISH HCMV-DNA total genome fluorescein   DNA
                                                                 labeled probes
                           [45]
            Bhattacharjee et al.,  2012  16/17 gliomas fresh frozen  Nested PCR for IE                DNA
                                    9/12 gliomas fresh frozen    WB for pp65, IE1-72, gB             Protein
                       [46]
            Fonseca et al.,  2012   27/75 gliomas fresh frozen   PCR for pp65                         DNA
                      [47]
            Khoury et al.,  2013    0/168 GBMs                   RNA-seq                              RNA
                                    0/47 LGGs
                    [48]
            Tang et al.,  2013      0/167 GBMs                   RNA-seq                              RNA
                      [49]
            Rahbar et al.,  2013    74/75 GBMs FFPE              IHC for IEA                         Protein
                                    70/75 GBMs FFPE              IHC for LA
                                    19/19 selected GBM FFPE      ISH CMV DNA probe                    DNA
                                    5/5 GBM primary cultures     PCR for IE                           DNA
                    [50]
            Ding et al.,  2014      51/67 gliomas FFPE           IHC for IE1-72                      Protein
                                    44/67 gliomas FFPE           IHC for pp65
                                    35/67 gliomas                Nested PCR for gB (UL55)             DNA
                         [51]
            Dos Santos et al.,  2014  21/22 GBMs fresh frozen    PCR for pp65                         DNA
                                    20/22 GBMs fresh frozen      hemi-nested PCR for gB (UL55)
            Cimino et al.,  2014    0/21 gliomas                 Unmapped reads from targeted cancer   DNA
                      [52]
                                                                 gene panel
                                                                                                                          Continued...
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