RØYRVIK ET AL.the PubMed database; search terms were compositions of mo<strong>no</strong>nucleotide, microsatellites,repeats, genes, frameshift, <strong>and</strong> the MeSH term neoplasms. From therelevant articles, with the cut-off date for <strong>in</strong>clusion be<strong>in</strong>g December 2006, mutationfrequency data for genes with cod<strong>in</strong>g microsatellites (or microsatellites <strong>in</strong> <strong>in</strong>trons<strong>and</strong> UTRs, as mentioned below) was pooled. Included were studies on MSItumors <strong>and</strong> cell l<strong>in</strong>es of all tissue types <strong>in</strong> which the MSI phe<strong>no</strong>type occurs, theoverwhelm<strong>in</strong>g majority be<strong>in</strong>g gastro<strong>in</strong>test<strong>in</strong>al <strong>and</strong> endometrial tumors. Inclusio<strong>no</strong>f mutation data on cell l<strong>in</strong>es was kept to a m<strong>in</strong>imum, as cell l<strong>in</strong>es can<strong>no</strong>t be usedto represent the situation <strong>in</strong> primary tumors with regard to the frequencies offrameshift mutations of this type. 44,49 Table I encompasses those genes <strong>and</strong> studiessuitable for pool<strong>in</strong>g, across tissue types but with particular attention to sporadic,primary colorectal tumors.TABLE IMutation frequencies of microsatellite-conta<strong>in</strong><strong>in</strong>g genesGene symbol—the most common name for any given gene <strong>in</strong> the scientific corpussurveyed; HGNC symbol—the name approved by the Human Ge<strong>no</strong>me NomenclatureCommittee, updated to October, 2007; Repeat—the repeat unit <strong>and</strong>number of units of microsatellites that were tested; Gene location—the location ofthe repeat with<strong>in</strong> the gene, taken when possible from the scientific corpus, otherwisefrom Ensembl Exon View of a representative transcript; Chr. Location—the location of the gene on a chromosome, taken when possible from the scientificcorpus, otherwise from Ensembl or GeneCards.org; Mut%(tot)—the mutationfrequency across all studies of any microsatellite unstable tumor type; Mut S/C—the number of mutated samples across studies of colorectal carc<strong>in</strong>omas (mostlysporadic, but with HNPCC cases <strong>and</strong> cell l<strong>in</strong>es where these could <strong>no</strong>t be separated)over the total number of samples; Mut% S/C—the mutation frequencyacross studies of colorectal carc<strong>in</strong>omas (mostly sporadic, but with HNPCC cases<strong>and</strong> cell l<strong>in</strong>es where these could <strong>no</strong>t be separated); Ref—Articles from which mutationfrequency <strong>in</strong>formation was pooled.Gene HGNC RepeatChr. Location(tot)%(S/C)Mut %MutMut. S/CRefs.ABCF1 ABCF1 (A)10 6p21.33 29 % 17/58 29 %44,52AC1 C4orf6 (T)10 4p16.2 68 % 14/20 70 %53,54ACTRII ACVR2A (A)8 2q22.3 70 % 95/140 68 %55-59AD7c-NTP (T)8 1p36 6 % 2/35 6 %55AIM2 AIM2 (A)10 1q22 52 % 46/81 57 %44,55,56AMYB MYBL1 (A)8 8q22 11 %56ANG2 ANGPT2 (A)9 8p23.1 4 % 2/57 4 %49APAF-1 APAF1 (A)8 12q23 8 % 5/79 6 %60-62ATM ATM (T)7 11q22-23 13 % 4/44 9 %63-65ATR ATR (A)10 3q23 23 % 55/252 22 %17,44,49,53,66,67AXIN2 AXIN2(G)7,59,68,6917q24.1 20 % 18/81 22 %(C)6,(A)6,(C)5234
TARGET GENES OF MSI COLORECTAL CANCERBAX BAX (G)8TABLE I, cont<strong>in</strong>uedMutation frequencies of microsatellite-conta<strong>in</strong><strong>in</strong>g genesMutChr. LocationS/C %(S/C)Mut. MutGene HGNC Repeat%(tot)BAT1 BAT1 (T)8 6p21.3 16 %19q13.3-q13.4542 %359/773BCL10 BCL10 (A)8 1p22 8 % 14/172 8 %45 %BLM BLM (A)9 15q26.1 16 % 51/373 14 %BLYM (A)8 4q28.1 5 % 5/96 5 %BRCA1 BRCA1 (A)8 17q21 2 % 3/126 2 %BRCA2 BRCA2 (A)8 13q12.3 2 % 6/191 3 %CANX CANX (T)8 5q35.3 21 %CASP1 CASP1 (A)8 11q23 4 % 0/78 0 %CASP4 CASP4 11q22.3 0 % 0/9 0 %CASP5 CASP5 (A)1011q22.2-q22.343 % 94/207 45 %CBL CBL (ATG)6 11q.23.3 12 % 1/11 9 %CBP* CREBBP (C)5 16p13.3 86 % 86 %CCDC28A CCDC28A (A)8 6q24.1 10 % 3/41 7 %CCKBR CCKBR (T)811p15.4-p15.519 % 2/15 13 %CDC25C CDC25C (A)8 5q31.2 11 % 10/93 11 %CDX2 CDX2 (G)7 13q12.2 2 % 1/81 1 %CEBPZ CEBPZ (A)9 2p22.2 14 % 20/148 14 %CHD2 CHD2 (A)10 15q26 12 % 7/58 12 %CHK1 CHEK1 (A)9 11q24.2 9 % 9/68 13 %CRSP3 MED23 (T)86q22.33-q24.13 % 1/38 3 %CYSLT1 CYSLTR1 (A)8 Xq21.1 9 % 4/44 9 %DD5 EDD1 (A)8 8q22 25 %DNA-PKcs PRKDC (A)10 8q11.21 22 % 50/228 22 %Doc-1 FILIP1L 3q12.1 2 % 1/57 2 %DRP INPPL1 (C)8 11q13.4 4 % 2/42 5 %DSTN DSTN (T)8 20p12.1 12 % 4/42 10 %E2F-4 E2F4 (CAG)13* 16q21-22 47 % 50/111 45 %EIF5 EIF5 (CAC)7 14q32.32 0 % 0/11 0 %ELAVL3 ELAVL3 (G)9 19p13.2 37 % 7/19 37 %EP300 EP300 (A)5, (A)7 22q13.2 57 % 4/7 57 %EPHB2 EPHB2 (A)91p36.1-101/2441 %p35641 %ERCC5 ERCC5 (A)9 13q33.1 9 % 8/93 9 %F8 (A)8 * 2 Xq28 15 % 6/41 15 %FACE-1 ZMPSTE24 (T)9 1p34.2 8 % 3/37 8 %Refs.5646,49,53,55,56,59,62,67,70-10960,66,95,10517,49,55,59,64,66,67,90,96,110,1116617,64,71,11017,49,71,102,1105656,62,719417,44,49,53,59,62,87,99,106,10796,11011255,561136659,62,11449,66,11544,5284,94,1021055554,5644,49,53,61,66,67497155,5673,92,94,99,103,109,116,11711052,5411211861,665555235
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Novel genetic and epigenetic altera
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TABLE OF CONTENTSACKNOWLEDGEMENTS .
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ACKNOWLEDGEMENTSThe present work ha
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Prefacetechnology[3]. This new tech
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SummaryThe subgroup of carcinomas w
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Introduction“Epigenetic inheritan
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Introductionamino acid change it is
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Introductionmethylation during embr
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IntroductionDNA is most of the time
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IntroductionFigure 5. DNA methylati
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IntroductionFigure 6. Incidence rat
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IntroductionFigure 8. Tumor staging
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Introductioninasmuch as 80% of colo
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IntroductionInstabilities involved
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Introductionthere seems to be a fid
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Introductionsevere alterations are
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Introductionpopulation-wide screeni
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IntroductionFigure 12. Present and
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RESULTS IN BRIEFPaper Ia. “DNA hy
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Results in Briefinstability, and se
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Results in BriefUnivariate survival
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Discussionseveral factors, and full
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Discussionlow threshold, we increas
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DiscussionIt may seem like unnecess
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Discussionthan 96% DHPLC do not sta
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DiscussionFigure 13. Mutation detec
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DiscussionClinical impact of molecu
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Discussionmarkers with a very high
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Discussionchromosomes in metaphase[
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DiscussionThese examples underline
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Discussiongenes. One is based on mu
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CONCLUSIONSWe have identified novel
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Future PerspectivesMolecular risk a
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REFERENCES1. Breasted J (1930) The
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References29. Deng G, Chen A, Pong
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References57. Al-Sukhni W, Aronson
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References84. Kunkel TA (1993) Nucl
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ReferencesLeggett B, Levine J, Kim
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References133. Lind GE, Thorstensen
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References156. Meling GI, Lothe RA,
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ReferencesT, Song X, Day RH, Sledzi
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References196. Honda S, Haruta M, S
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ORIGINAL ARTICLESAPPENDIXAppendix I
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GASTROENTEROLOGY 2007;132:1631-1639
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Paper IbGuro E Lind, Terje Ahlquist
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Journal of Translational Medicine 2
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Journal of Translational Medicine 2
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Journal of Translational Medicine 2
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Journal of Translational Medicine 2
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Journal of Translational Medicine 2
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Paper IITerje Ahlquist, Guro E Lind
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BackgroundMost cases of colorectal
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ADAMTS1 CDKN2A CRABP1 HOXA9 MAL MGM
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pseudogene, leading to a high rate
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strands. Proc Natl Acad Sci U S A 1
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concomitant absence of transcript a
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