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   <subfield code="a">10.1007/s10689-010-9371-4</subfield>
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   <subfield code="a">(NATIONALLICENCE)springer-10.1007/s10689-010-9371-4</subfield>
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   <subfield code="a">An intronic mutation in MLH1 associated with familial colon and breast cancer</subfield>
   <subfield code="h">[Elektronische Daten]</subfield>
   <subfield code="c">[F. Bianchi, M. Raponi, F. Piva, A. Viel, I. Bearzi, E. Galizia, R. Bracci, L. Belvederesi, C. Loretelli, C. Brugiati, F. Corradini, D. Baralle, R. Cellerino]</subfield>
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   <subfield code="a">Single base substitutions can lead to missense mutations, silent mutations or intronic mutations, whose significance is uncertain. Aberrant splicing can occur due to mutations that disrupt or create canonical splice sites or splicing regulatory sequences. The assessment of their pathogenic role may be difficult, and is further complicated by the phenomenon of alternative splicing. We describe an HNPCC patient, with early-onset colorectal cancer and a strong family history of colorectal and breast tumors, who harbours a germ line MLH1 intronic variant (IVS9 c.790 +4A&gt;T). The proband, together with 2 relatives affected by colorectal-cancer and 1 by breast cancer, have been investigated for microsatellite instability, immunohistochemical MMR protein staining, direct sequencing and Multiplex Ligation-dependent Probe Amplification. The effect of the intronic variant was analyzed both by splicing prediction software and by hybrid minigene splicing assay. In this family, we found a novel MLH1 germline intronic variant (IVS9 c.790 +4A&gt;T) in intron 9, consisting of an A to T transversion, in position +4 of the splice donor site of MLH1. The mutation is associated with the lack of expression of the MLH1 protein and MSI in tumour tissues. Furthermore, our results suggest that this substitution leads to a complete skip of both exon 9 and 10 of the mutant allele. Our findings suggest that this intronic variant plays a pathogenic role.</subfield>
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   <subfield code="a">The Author(s), 2010</subfield>
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   <subfield code="a">Intronic mutation</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">MLH1</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">Minigene assay</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">Colon cancer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">Breast cancer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">HNPCC : Hereditary Non-Polyposis Colorectal Cancer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">MMR : MisMatch Repair</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">MSI : MicroSatellite Instability</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">IHC : Immunohistochemistry</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">InSiGHT : International Society for Gastrointestinal Hereditary Tumours</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">ESE : Exonic splice enhancer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">ESS : Exonic splice silencer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">ISS : Intronic splicing silencer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">FFPE : Formalin-fixed, paraffin-embedded</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">MLPA : Multiplex ligation-dependent probe amplification</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">ISE : Intronic splice enhancer</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="690" ind1=" " ind2="7">
   <subfield code="a">Wt : Wild type</subfield>
   <subfield code="2">nationallicence</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Bianchi</subfield>
   <subfield code="D">F.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Raponi</subfield>
   <subfield code="D">M.</subfield>
   <subfield code="u">Human Genetics Division, University of Southampton, Southampton, UK</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Piva</subfield>
   <subfield code="D">F.</subfield>
   <subfield code="u">Dipartimento di Biochimica, Biologia e Genetica, Università Politecnica delle Marche, Via Tronto, 60126, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Viel</subfield>
   <subfield code="D">A.</subfield>
   <subfield code="u">Oncologia Sperimentale 1, Dipartimento di Oncologia Molecolare e Ricerca Traslazionale, 33081, Aviano, PN, Italy</subfield>
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  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Bearzi</subfield>
   <subfield code="D">I.</subfield>
   <subfield code="u">Anatomia ed Istologia Patologica, Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Galizia</subfield>
   <subfield code="D">E.</subfield>
   <subfield code="u">Oncologia Medica, Ospedale &quot;E. Profili”, Fabriano, Italy</subfield>
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  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Bracci</subfield>
   <subfield code="D">R.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Belvederesi</subfield>
   <subfield code="D">L.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
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  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Loretelli</subfield>
   <subfield code="D">C.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
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   <subfield code="a">Brugiati</subfield>
   <subfield code="D">C.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
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   <subfield code="a">Corradini</subfield>
   <subfield code="D">F.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
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  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Baralle</subfield>
   <subfield code="D">D.</subfield>
   <subfield code="u">Human Genetics Division, University of Southampton, Southampton, UK</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="700" ind1="1" ind2=" ">
   <subfield code="a">Cellerino</subfield>
   <subfield code="D">R.</subfield>
   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
   <subfield code="4">aut</subfield>
  </datafield>
  <datafield tag="773" ind1="0" ind2=" ">
   <subfield code="t">Familial Cancer</subfield>
   <subfield code="d">Springer Netherlands</subfield>
   <subfield code="g">10/1(2011-03-01), 27-35</subfield>
   <subfield code="x">1389-9600</subfield>
   <subfield code="q">10:1&lt;27</subfield>
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   <subfield code="D">1</subfield>
   <subfield code="a">brief-communication</subfield>
   <subfield code="2">jats</subfield>
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   <subfield code="a">Bianchi</subfield>
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   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
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   <subfield code="u">Dipartimento di Biochimica, Biologia e Genetica, Università Politecnica delle Marche, Via Tronto, 60126, Ancona, Italy</subfield>
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   <subfield code="D">A.</subfield>
   <subfield code="u">Oncologia Sperimentale 1, Dipartimento di Oncologia Molecolare e Ricerca Traslazionale, 33081, Aviano, PN, Italy</subfield>
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   <subfield code="u">Anatomia ed Istologia Patologica, Università Politecnica delle Marche, Ancona, Italy</subfield>
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   <subfield code="u">Dipartimento di Medicina Clinica e Biotecnologie Applicate, Centro Regionale di Genetica Oncologica, Ospedali Riuniti-Università Politecnica delle Marche, Ancona, Italy</subfield>
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