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  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-id journal-id-type="publisher-id">abc</journal-id>
      <journal-title-group>
        <journal-title>Arquivos Brasileiros de Cardiologia</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Arq. Bras. Cardiol.</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0066-782X</issn>
      <issn pub-type="epub">1678-4170</issn>
      <publisher>
        <publisher-name>Sociedade Brasileira de Cardiologia - SBC</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id specific-use="scielo-v3" pub-id-type="publisher-id">cgPf7wGW4yxJHvDWDKKxJFw</article-id>
      <article-id specific-use="scielo-v2" pub-id-type="publisher-id">S0066-782X2022000800223</article-id>
      <article-id pub-id-type="publisher-id">abc.20220437</article-id>
      <article-id pub-id-type="doi">10.36660/abc.20220437</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Minieditorial</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Utilidade de Biomarcadores na Suspeita de Amiloidose Card&#237;aca: Oportunidade para Diagn&#243;stico mais Frequente e Precoce</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="editor">
          <contrib-id contrib-id-type="orcid">0000-0002-8836-345X</contrib-id>
          <name>
            <surname>Barbosa-Ferreira</surname>
            <given-names>Jo&#227;o Marcos</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c1"/>
        </contrib>
        <contrib contrib-type="editor">
          <name>
            <surname>Oliveira</surname>
            <given-names>Andreza Ara&#250;jo de</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <aff id="aff1">
          <label>1</label>
          <institution content-type="orgname">Universidade Nilton Lins</institution>
          <addr-line>
            <named-content content-type="city">Manaus</named-content>
            <named-content content-type="state">AM</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Universidade Nilton Lins, Manaus, AM &#8211; Brasil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c1"><bold>Correspond&#234;ncia: Jo&#227;o Marcos Barbosa-Ferreira</bold> &#8226; Universidade do Estado do Amazonas &#8211; Av. Carvalho Leal, SN. CEP <postal-code>69010-120</postal-code>, Manaus, AM &#8211; Brasil. E-mail: <email>jmbemfica@hotmail.com</email> </corresp>
      </author-notes>
      <pub-date date-type="pub" publication-format="electronic">
        <day>05</day>
        <month>08</month>
        <year>2022</year>
      </pub-date>
      <pub-date date-type="collection" publication-format="electronic">
        <month>08</month>
        <year>2022</year>
      </pub-date>
      <volume>119</volume>
      <issue>2</issue>
      <fpage>223</fpage>
      <lpage>224</lpage>
      <permissions>
        <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/" xml:lang="en">
          <license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License</license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="pt">
        <title>Palavras-chave</title>
        <kwd>Amiloidose Card&#237;aca</kwd>
        <kwd>Biomarcadores</kwd>
        <kwd>NT-proBNP</kwd>
        <kwd>Volume Sist&#243;lico</kwd>
        <kwd>Insufici&#234;ncia Card&#237;aca</kwd>
        <kwd>Disfun&#231;&#227;o Ventricular</kwd>
        <kwd>Diagn&#243;stico por Imagem/m&#233;todos</kwd>
      </kwd-group>
      <counts>
        <fig-count count="0"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="10"/>
        <page-count count="2"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <p>A metan&#225;lise intitulada &#8220;Diagnostic Role of NT-proBNP in Patients with Cardiac Amyloidosis Involvement: A Meta-Analysis&#8221; nos traz uma importante revis&#227;o da utilidade da dosagem de NT-pr&#243;BNP em pacientes com acometimento card&#237;aco pela amiloidose. A demonstra&#231;&#227;o de boa sensibilidade e especificidade deste biomarcador refor&#231;a sua utilidade no diagn&#243;stico da amiloidose card&#237;aca (AC).<sup><xref ref-type="bibr" rid="B1">1</xref></sup></p>
    <p>A amiloidose card&#237;aca tem sido cada vez mais diagnosticada, principalmente em pacientes com o fen&#243;tipo de insufici&#234;ncia card&#237;aca com fra&#231;&#227;o de eje&#231;&#227;o preservada.<sup><xref ref-type="bibr" rid="B2">2</xref></sup> Pouco mais da metade dos pacientes com sintomas de insufici&#234;ncia card&#237;aca apresentam fra&#231;&#227;o de eje&#231;&#227;o preservada, especialmente os indiv&#237;duos idosos. Este achado habitualmente &#233; considerado apenas como disfun&#231;&#227;o diast&#243;lica relacionada &#224; idade e a comorbidades associadas. Por&#233;m, tal fator deve ser um dos sinais de alerta para o diagn&#243;stico de AC, principalmente quando associado a n&#237;veis elevados de biomarcadores.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> &#201; descrita uma grande variabilidade na frequ&#234;ncia do diagn&#243;stico de amiloidose card&#237;aca na popula&#231;&#227;o geral podendo chegar de 5 a 74% entre os diversos estudos.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> Esta variabilidade pode estar relacionada a fatores como baixa suspei&#231;&#227;o cl&#237;nica ou dificuldades de acesso aos exames complementares necess&#225;rios para o diagn&#243;stico do acometimento card&#237;aco na amiloidose. O fluxograma diagn&#243;stico em pacientes com suspeita de acometimento card&#237;aco pela amiloidose &#233; baseado, principalmente, em exames de imagem.<sup><xref ref-type="bibr" rid="B4">4</xref>&#8211;<xref ref-type="bibr" rid="B6">6</xref></sup> Estes exames, podem apresentar alto custo, como: cintilografia mioc&#225;rdica, ecocardiograma com strain e resson&#226;ncia magn&#233;tica card&#237;aca e, muitas vezes, est&#227;o dispon&#237;veis apenas em centros de refer&#234;ncia cardiol&#243;gica tornando o diagn&#243;stico da AC mais dif&#237;cil e tardio.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> Al&#233;m disto, &#233; importante salientar que o diagn&#243;stico tardio destes pacientes pode influenciar diretamente no progn&#243;stico, por atrasar o in&#237;cio do tratamento, levando, por exemplo, a uma m&#233;dia de 6 meses de sobrevida ap&#243;s o desenvolvimento dos sintomas na forma AL da amiloidose.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
    <p>Portanto, principalmente em centros menos desenvolvidos, a AC ainda &#233; subdiagnosticada, configurando um grave problema de sa&#250;de p&#250;blica. Com isto, a utiliza&#231;&#227;o de exames n&#227;o invasivos, de f&#225;cil acesso e baixo custo pode ser importante. Neste cen&#225;rio, a dosagem de biomarcadores como o NT pro-BNP, troponina ou outros pode ser &#250;til n&#227;o s&#243; na avalia&#231;&#227;o inicial, mas tamb&#233;m na avalia&#231;&#227;o progn&#243;stica de pacientes com suspeita de amiloidose card&#237;aca. O NT pro-BNP se utiliza h&#225; v&#225;rios anos no diagn&#243;stico, acompanhamento cl&#237;nico e progn&#243;stico de pacientes com insufici&#234;ncia card&#237;aca de uma forma geral.<sup><xref ref-type="bibr" rid="B7">7</xref>,<xref ref-type="bibr" rid="B8">8</xref></sup> Estudos com NT-proBNP na AC tem evidenciado boa acur&#225;cia diagn&#243;stica, inclusive fazendo parte da avalia&#231;&#227;o para estadiamento progn&#243;stico da doen&#231;a.<sup><xref ref-type="bibr" rid="B9">9</xref>,<xref ref-type="bibr" rid="B10">10</xref></sup> Al&#233;m da avalia&#231;&#227;o diagn&#243;stica e progn&#243;stica os biomarcadores podem tamb&#233;m ser utilizados na avalia&#231;&#227;o da efic&#225;cia terap&#234;utica destes pacientes, principalmente em pacientes hematol&#243;gicos nos quais a quimioterapia pode ser cardiot&#243;xica.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
    <p>&#201; importante salientar que a amiloidose card&#237;aca &#233; uma doen&#231;a cada vez mais frequente, at&#233; pelo envelhecimento da popula&#231;&#227;o. No entanto, esta doen&#231;a ainda &#233; subdiagnosticada, principalmente em centros menos desenvolvidos ou onde exames de alto custo n&#227;o s&#227;o de f&#225;cil acesso &#224; popula&#231;&#227;o que utiliza servi&#231;os p&#250;blicos. Portanto, &#233; necess&#225;ria a organiza&#231;&#227;o de fluxogramas diagn&#243;sticos mais acess&#237;veis &#224; maior parte da popula&#231;&#227;o e a dosagem de biomarcadores como o NT-proBNP &#233; muito &#250;til neste cen&#225;rio.</p>
  </body>
  <back>
    <fn-group>
      <fn fn-type="other" id="fn1">
        <p>Minieditorial referente ao artigo: Papel Diagn&#243;stico do NT-proBNP em Pacientes com Comprometimento por Amiloidose Card&#237;aca: Uma Metan&#225;lise</p>
      </fn>
    </fn-group>
    <ref-list>
      <title>Refer&#234;ncias</title>
      <ref id="B1">
        <label>1</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Zhang</surname>
              <given-names>Y</given-names>
            </name>
            <name>
              <surname>Chaolu</surname>
              <given-names>H</given-names>
            </name>
          </person-group>
          <article-title>Diagnostic Role of NT-proBNP in Patients with Cardiac Amyloidosis Involvement: A Meta-Analysis</article-title>
          <source>Arq Bras Cardiol</source>
          <year>2022</year>
          <volume>119</volume>
          <issue>2</issue>
          <fpage>212</fpage>
          <lpage>222</lpage>
        </element-citation>
        <mixed-citation>1 Zhang Y e Chaolu H. Diagnostic Role of NT-proBNP in Patients with Cardiac Amyloidosis Involvement: A Meta-Analysis. Arq Bras Cardiol. 2022; 119(2):212-222</mixed-citation>
      </ref>
      <ref id="B2">
        <label>2</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Mesquita</surname>
              <given-names>ET</given-names>
            </name>
            <name>
              <surname>Jorge</surname>
              <given-names>AJ</given-names>
            </name>
            <name>
              <surname>Souza</surname>
              <given-names>CV</given-names>
              <suffix>Junior</suffix>
            </name>
            <name>
              <surname>Andrade</surname>
              <given-names>TR</given-names>
            </name>
          </person-group>
          <article-title>Cardiac amyloidosis and its new clinical phenotype: heart failure with preserved ejection fraction</article-title>
          <source>Arq Bras Cardiol</source>
          <year>2017</year>
          <volume>109</volume>
          <issue>1</issue>
          <fpage>71</fpage>
          <lpage>80</lpage>
          <comment>
            <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.5935/abc.20170079">https://doi.org/10.5935/abc.20170079</ext-link>
          </comment>
        </element-citation>
        <mixed-citation>2 Mesquita ET, Jorge AJ, Souza Junior CV, Andrade TR. Cardiac amyloidosis and its new clinical phenotype: heart failure with preserved ejection fraction. Arq Bras Cardiol, 2017; 109(1):71-80. <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.5935/abc.20170079">https://doi.org/10.5935/abc.20170079</ext-link> </mixed-citation>
      </ref>
      <ref id="B3">
        <label>3</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Fernandes</surname>
              <given-names>F</given-names>
            </name>
            <name>
              <surname>Alencar</surname>
              <given-names>AC</given-names>
              <suffix>Neto</suffix>
            </name>
            <name>
              <surname>Bueno</surname>
              <given-names>BV</given-names>
            </name>
            <name>
              <surname>Cafezeiro</surname>
              <given-names>CR</given-names>
            </name>
            <name>
              <surname>Rissato</surname>
              <given-names>JH</given-names>
            </name>
            <name>
              <surname>Szor</surname>
              <given-names>RS</given-names>
            </name>
            <etal/>
          </person-group>
          <article-title>Clinical, laboratory, and imaging profile in patients with systemic amyloidosis in a Brazilian Cardiology Referral Center</article-title>
          <source>Arq Bras Cardiol</source>
          <year>2022</year>
          <volume>118</volume>
          <issue>2</issue>
          <fpage>422</fpage>
          <lpage>432</lpage>
          <pub-id pub-id-type="doi">10.36660/abc.20201003</pub-id>
        </element-citation>
        <mixed-citation>3 Fernandes F, Alencar Neto AC, Bueno BV, Cafezeiro CR, Rissato JH, Szor RS et al. Clinical, laboratory, and imaging profile in patients with systemic amyloidosis in a Brazilian Cardiology Referral Center. Arq Bras Cardiol. 2022; 118(2):422-32. doi: 10.36660/abc.20201003.</mixed-citation>
      </ref>
      <ref id="B4">
        <label>4</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Sim&#245;es</surname>
              <given-names>MV</given-names>
            </name>
            <name>
              <surname>Fernandes</surname>
              <given-names>F</given-names>
            </name>
            <name>
              <surname>Marcondes-Braga</surname>
              <given-names>FG</given-names>
            </name>
            <name>
              <surname>Scheinberg</surname>
              <given-names>P</given-names>
            </name>
            <name>
              <surname>Correia</surname>
              <given-names>EB</given-names>
            </name>
            <name>
              <surname>Rohde</surname>
              <given-names>LE</given-names>
            </name>
            <etal/>
          </person-group>
          <article-title>Position statement on diagnosis and treatment of cardiac amyloidosis &#8211; 2021</article-title>
          <source>Arq Bras Cardiol</source>
          <year>2021</year>
          <volume>117</volume>
          <issue>3</issue>
          <fpage>561</fpage>
          <lpage>598</lpage>
          <comment>
            <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.36660/abc.20201003">https://doi.org/10.36660/abc.20201003</ext-link>
          </comment>
        </element-citation>
        <mixed-citation>4 Sim&#245;es MV, Fernandes F, Marcondes-Braga FG, Scheinberg P, Correia EB, Rohde LE, et al. Position statement on diagnosis and treatment of cardiac amyloidosis &#8211; 2021. Arq Bras Cardiol. 2021; 117(3):561-98. <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.36660/abc.20201003">https://doi.org/10.36660/abc.20201003</ext-link> </mixed-citation>
      </ref>
      <ref id="B5">
        <label>5</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Sim&#245;es</surname>
              <given-names>MV</given-names>
            </name>
            <name>
              <surname>Alves</surname>
              <given-names>SM</given-names>
            </name>
            <name>
              <surname>Fernandes</surname>
              <given-names>F</given-names>
            </name>
            <name>
              <surname>Coelho</surname>
              <given-names>OR</given-names>
              <suffix>Filho</suffix>
            </name>
            <name>
              <surname>Mangini</surname>
              <given-names>S.</given-names>
            </name>
          </person-group>
          <article-title>Emerging topics in heart failure: new paradigms in cardiac amyloidosis</article-title>
          <source>Arq Bras Cardiol</source>
          <year>2020</year>
          <volume>115</volume>
          <issue>5</issue>
          <fpage>945</fpage>
          <lpage>948</lpage>
          <comment>
            <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.36660/abc.20201126">https://doi.org/10.36660/abc.20201126</ext-link>
          </comment>
        </element-citation>
        <mixed-citation>5 Sim&#245;es MV, Alves SM, Fernandes F, Coelho-Filho OR, Mangini S. Emerging topics in heart failure: new paradigms in cardiac amyloidosis. Arq Bras Cardiol. 2020; 115(5):945-8. doi: <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.36660/abc.20201126">https://doi.org/10.36660/abc.20201126</ext-link> </mixed-citation>
      </ref>
      <ref id="B6">
        <label>6</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Silva</surname>
              <given-names>TO</given-names>
            </name>
            <name>
              <surname>Darze</surname>
              <given-names>ES</given-names>
            </name>
            <name>
              <surname>Ritt</surname>
              <given-names>LE</given-names>
            </name>
            <name>
              <surname>Almeida</surname>
              <given-names>AL</given-names>
            </name>
            <name>
              <surname>Ximenes</surname>
              <given-names>A.</given-names>
            </name>
          </person-group>
          <article-title>Transthyretin Amyloidosis (ATTR) - The role of multimodality in the definitive diagnosis</article-title>
          <source>Arq Bras Cardiol</source>
          <year>2020</year>
          <issue>4</issue>
          <supplement>Suppl.1</supplement>
          <fpage>8</fpage>
          <lpage>12</lpage>
          <comment>
            <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.36660/abc.20201126">https://doi.org/10.36660/abc.20201126</ext-link>
          </comment>
        </element-citation>
        <mixed-citation>6 Silva TO, Darze ES, Ritt LE, Almeida AL, Ximenes A. Transthyretin Amyloidosis (ATTR) - The role of multimodality in the definitive diagnosis. Arq Bras Cardiol 2020; 114(4Suppl.1):8-12. doi: <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.36660/abc.20201126">https://doi.org/10.36660/abc.20201126</ext-link>.</mixed-citation>
      </ref>
      <ref id="B7">
        <label>7</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Kyriakou</surname>
              <given-names>P</given-names>
            </name>
            <name>
              <surname>Mouselimis</surname>
              <given-names>D</given-names>
            </name>
            <name>
              <surname>Tsarouchas</surname>
              <given-names>A</given-names>
            </name>
            <name>
              <surname>Rigopoulos</surname>
              <given-names>A</given-names>
            </name>
            <name>
              <surname>Constantinos</surname>
              <given-names>B</given-names>
            </name>
            <name>
              <surname>Noutsias</surname>
              <given-names>M</given-names>
            </name>
            <name>
              <surname>Vassilikos</surname>
              <given-names>V.</given-names>
            </name>
          </person-group>
          <article-title>Diagnosis of cardiac amyloidosis: a systematic review on the role of imaging and biomarkers</article-title>
          <source>BMC Cardiovasc Disord</source>
          <year>2018</year>
          <volume>18</volume>
          <issue>1</issue>
          <fpage>221</fpage>
          <lpage>221</lpage>
          <pub-id pub-id-type="doi">10.1186/s12872-018-0952-8</pub-id>
        </element-citation>
        <mixed-citation>7 Kyriakou P, Mouselimis D, Tsarouchas A, Rigopoulos A, Constantinos B, Noutsias M, Vassilikos V. Diagnosis of cardiac amyloidosis: a systematic review on the role of imaging and biomarkers. BMC Cardiovasc Disord.2018;18(1):221. doi: 10.1186/s12872-018-0952-8.</mixed-citation>
      </ref>
      <ref id="B8">
        <label>8</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Pufulete</surname>
              <given-names>M</given-names>
            </name>
            <name>
              <surname>Maishman</surname>
              <given-names>R</given-names>
            </name>
            <name>
              <surname>Dabner</surname>
              <given-names>L</given-names>
            </name>
            <name>
              <surname>Higgins</surname>
              <given-names>JP</given-names>
            </name>
            <name>
              <surname>Rogers</surname>
              <given-names>CA</given-names>
            </name>
            <name>
              <surname>Dayer</surname>
              <given-names>M</given-names>
            </name>
            <etal/>
          </person-group>
          <article-title>B-type natriuretic peptide-guided therapy for heart failure (HF): a systematic review and meta-analysis of individual participant data (IPD) and aggregate data</article-title>
          <source>Syst Rev</source>
          <year>2018</year>
          <volume>7</volume>
          <issue>1</issue>
          <fpage>112</fpage>
          <lpage>112</lpage>
          <pub-id pub-id-type="doi">10.1186/s13643-018-0776-8</pub-id>
        </element-citation>
        <mixed-citation>8 Pufulete M, Maishman R, Dabner L, Higgins JP, Rogers CA, Dayer M, et al. B-type natriuretic peptide-guided therapy for heart failure (HF): a systematic review and meta-analysis of individual participant data (IPD) and aggregate data. Syst Rev.2018;7(1):112. doi: 10.1186/s13643-018-0776-8.</mixed-citation>
      </ref>
      <ref id="B9">
        <label>9</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Zhu</surname>
              <given-names>Q</given-names>
            </name>
            <name>
              <surname>Gao</surname>
              <given-names>P</given-names>
            </name>
            <name>
              <surname>Fu</surname>
              <given-names>S</given-names>
            </name>
            <name>
              <surname>Wang</surname>
              <given-names>H</given-names>
            </name>
            <name>
              <surname>Bai</surname>
              <given-names>Y</given-names>
            </name>
            <name>
              <surname>Luo</surname>
              <given-names>L</given-names>
            </name>
            <name>
              <surname>Ye</surname>
              <given-names>P.</given-names>
            </name>
          </person-group>
          <article-title>prognostic value of plasma NT-proBNP levels in hospitalized patients older than 80 years of age in a hospital in Beijing</article-title>
          <source>China Arq Bras Cardiol</source>
          <year>2021</year>
          <volume>116</volume>
          <issue>6</issue>
          <fpage>1027</fpage>
          <lpage>1036</lpage>
          <pub-id pub-id-type="doi">10.36660/abc.20190158</pub-id>
        </element-citation>
        <mixed-citation>9 Zhu Q, Gao P, Fu S, Wang H, Bai Y, Luo L, Ye P. prognostic value of plasma NT-proBNP levels in hospitalized patients older than 80 years of age in a hospital in Beijing, China Arq Bras Cardiol. 2021;116(6):1027-36. doi: 10.36660/abc.20190158.</mixed-citation>
      </ref>
      <ref id="B10">
        <label>10</label>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Kumar</surname>
              <given-names>S</given-names>
            </name>
            <name>
              <surname>Dispenzieri</surname>
              <given-names>A</given-names>
            </name>
            <name>
              <surname>Lacy</surname>
              <given-names>MQ</given-names>
            </name>
            <name>
              <surname>Hayman</surname>
              <given-names>SR</given-names>
            </name>
            <name>
              <surname>Buadi</surname>
              <given-names>FK</given-names>
            </name>
            <name>
              <surname>Colby</surname>
              <given-names>C</given-names>
            </name>
            <etal/>
          </person-group>
          <article-title>Revised prognostic staging system for light chain amyloidosis incorporating cardiac biomarkers and serum free light chain measurements</article-title>
          <source>J Clin Oncol</source>
          <year>2012</year>
          <volume>30</volume>
          <issue>9</issue>
          <fpage>989</fpage>
          <lpage>995</lpage>
          <pub-id pub-id-type="doi">10.1200/JCO.2011.38.5724</pub-id>
        </element-citation>
        <mixed-citation>10 Kumar S, Dispenzieri A, Lacy MQ, Hayman SR, Buadi FK, Colby C, et al. Revised prognostic staging system for light chain amyloidosis incorporating cardiac biomarkers and serum free light chain measurements. J Clin Oncol. 2012;30(9):989-95. doi: 10.1200/JCO.2011.38.5724.</mixed-citation>
      </ref>
    </ref-list>
  </back>
  <sub-article article-type="translation" id="S01" xml:lang="en">
    <front-stub>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Short Editorial</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Utility of Biomarkers in Suspected Cardiac Amyloidosis: Opportunity for More Frequent and Early Diagnosis</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="editor">
          <contrib-id contrib-id-type="orcid">0000-0002-8836-345X</contrib-id>
          <name>
            <surname>Barbosa-Ferreira</surname>
            <given-names>Jo&#227;o Marcos</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c2"/>
        </contrib>
        <contrib contrib-type="editor">
          <name>
            <surname>Oliveira</surname>
            <given-names>Andreza Ara&#250;jo de</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>1</sup>
          </xref>
        </contrib>
        <aff id="aff2">
          <label>1</label>
          <addr-line>
            <named-content content-type="city">Manaus</named-content>
            <named-content content-type="state">AM</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Universidade Nilton Lins, Manaus, AM &#8211; Brazil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c2"><bold>Mailing Address: Jo&#227;o Marcos Barbosa-Ferreira</bold> &#8226; Universidade do Estado do Amazonas &#8211; Av. Carvalho Leal, SN. Postal code <postal-code>69010-120</postal-code>, Manaus, AM &#8211; Brazil. E-mail: <email>jmbemfica@hotmail.com</email> </corresp>
      </author-notes>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Amyloidosis, Cardiac</kwd>
        <kwd>Biomarkers</kwd>
        <kwd>NT-proBNP</kwd>
        <kwd>Stroke Volume</kwd>
        <kwd>Heart Failure</kwd>
        <kwd>Ventricular Dysfunction</kwd>
        <kwd>Diagnostic</kwd>
        <kwd>Imaging/methods</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>The meta-analysis entitled &#8220;Diagnostic Role of NT-proBNP in Patients with Cardiac Amyloidosis Involvement: A Meta-Analysis&#8221; brings us an important review of the usefulness of NT-proBNP measurement in patients with cardiac involvement by amyloidosis. The demonstration of good sensitivity and specificity of this biomarker reinforces its usefulness in the diagnosis of cardiac amyloidosis (CA).<sup><xref ref-type="bibr" rid="B1">1</xref></sup></p>
      <p>Cardiac amyloidosis has been increasingly diagnosed, especially in patients with the heart failure phenotype of preserved ejection fraction.<sup><xref ref-type="bibr" rid="B2">2</xref></sup> Just over half of the patients with symptoms of heart failure have preserved ejection fraction, especially elderly individuals. This finding is usually considered only as age-related diastolic dysfunction and associated comorbidities. However, this factor should be one of the warning signs for diagnosing CA, especially when associated with high levels of biomarkers.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> A great variability in the frequency of diagnosis of CA in the general population has been described, ranging from 5 to 74% between the various studies.<sup><xref ref-type="bibr" rid="B1">1</xref></sup> This variability may be related to factors such as low clinical suspicion or difficulties accessing complementary exams necessary for diagnosing cardiac involvement in amyloidosis. The diagnostic flowchart in patients with suspected cardiac involvement by amyloidosis is mainly based on imaging tests.<sup><xref ref-type="bibr" rid="B4">4</xref>&#8211;<xref ref-type="bibr" rid="B6">6</xref></sup> These tests can be expensive, such as myocardial scintigraphy, strain echocardiography and cardiac magnetic resonance, and, often, they are only available at cardiology referral centers, making the diagnosis of CA more difficult and delayed.<sup><xref ref-type="bibr" rid="B3">3</xref></sup> In addition, it is important to note that the late diagnosis of these patients can directly influence the prognosis by delaying the start of treatment, leading to a median of 6 months of survival after the development of symptoms in the AL form of amyloidosis for example.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
      <p>Therefore, especially in less developed centers, CA is still underdiagnosed, configuring a serious public health problem. With this, the use of non-invasive, easily accessible and low-cost exams can be important. In this scenario, the measurement of biomarkers such as NT pro-BNP, troponin or others can be useful not only in the initial evaluation but also in the prognostic evaluation of patients with suspected cardiac amyloidosis. NT pro-BNP has been used for several years in the diagnosis, clinical follow-up and prognosis of patients with other etiologies of heart failure.<sup><xref ref-type="bibr" rid="B7">7</xref>,<xref ref-type="bibr" rid="B8">8</xref></sup> Studies with NT-proBNP in CA have shown good diagnostic accuracy, including being part of the evaluation for the prognostic staging of the disease.<sup><xref ref-type="bibr" rid="B9">9</xref>,<xref ref-type="bibr" rid="B10">10</xref></sup> In addition to diagnostic and prognostic evaluation, biomarkers can also be used to assess the therapeutic efficacy of these patients, especially in hematologic patients under chemotherapy, where they may be cardiotoxic.<sup><xref ref-type="bibr" rid="B4">4</xref></sup></p>
      <p>It is important to point out that cardiac amyloidosis is an increasingly frequent disease due to the aging of the population. However, this disease is still underdiagnosed, especially in less developed centers or where high-cost tests are not easily accessible to the population that uses public services. Therefore, it is necessary to organize diagnostic flowcharts that are more accessible to most of the population, and the measurement of biomarkers such as NT-proBNP is very useful in this scenario.</p>
    </body>
    <back>
      <fn-group>
        <fn fn-type="other" id="fn2">
          <p>Short Editorial rellated to the article: Diagnostic Role of NT-proBNP in Patients with Cardiac Amyloidosis Involvement: A Meta-Analysis</p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
