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	<title>Cáncer gástrico &#8211; Grupo TTD</title>
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	<description>Grupo de Tratamiento de los Tumores Digestivos</description>
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	<title>Cáncer gástrico &#8211; Grupo TTD</title>
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		<title>Claudina 18.2 en adenocarcinoma gastroesofágico: prevalencia, solapamiento biomarcador e impacto clínico en cohorte europea</title>
		<link>https://grupottd.org/claudina-18-2-en-adenocarcinoma-gastroesofagico-prevalencia-solapamiento-biomarcador-e-impacto-clinico-en-cohorte-europea/</link>
					<comments>https://grupottd.org/claudina-18-2-en-adenocarcinoma-gastroesofagico-prevalencia-solapamiento-biomarcador-e-impacto-clinico-en-cohorte-europea/#respond</comments>
		
		<dc:creator><![CDATA[Susana Rodríguez]]></dc:creator>
		<pubDate>Mon, 01 Jun 2026 06:31:38 +0000</pubDate>
				<category><![CDATA[Artículos comentados]]></category>
		<category><![CDATA[Adenocarcinoma gastroesofágico]]></category>
		<category><![CDATA[Biomarcadores]]></category>
		<category><![CDATA[Cáncer de la unión gastroesofágica]]></category>
		<category><![CDATA[Cáncer gástrico]]></category>
		<category><![CDATA[Claudina 18.2]]></category>
		<category><![CDATA[CLDN18.2]]></category>
		<category><![CDATA[ESMO Open]]></category>
		<category><![CDATA[Estudio multicéntrico europeo]]></category>
		<category><![CDATA[HER2 positivo]]></category>
		<category><![CDATA[inmunoterapia]]></category>
		<category><![CDATA[PD-L1]]></category>
		<category><![CDATA[zolbetuximab]]></category>
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					<description><![CDATA[El estudio de Terán et al. analiza la expresión de CLDN18.2 en 563 pacientes europeos con adenocarcinoma gastroesofágico avanzado. La expresión alta de CLDN18.2 (≥75% de células tumorales) se detectó en el 48,3% de los casos, una prevalencia superior a la de los ensayos pivotales. La expresión se asoció con histología difusa y afectación peritoneal, y se solapó con otros biomarcadores en más del 20% de los pacientes. Mientras que CLDN18.2 no modificó los resultados con quimioterapia sola, sí se asoció con mejor respuesta a la terapia anti-HER2 y con una tendencia a peores resultados con inmunoterapia.

Conclusiones:
-	La expresión alta de CLDN18.2 es más prevalente en Europa (48,3%) que en las series asiáticas y los ensayos pivotales (~24-38%).
-	Se asocia con histología difusa, células en anillo de sello y afectación peritoneal.
-	No tiene impacto en los resultados de supervivencia con quimioterapia de primera línea.
-	En los tumores HER2 positivos, aquellos con expresión alta de CLDN18.2 se asociaron con mejor mSLP con terapia anti-HER2 (17 vs 8,9 meses; P = 0,03).
-	Los pacientes con tumores expresión alta de CLDN18.2 tratados con inmunoterapia mostraron tendencia a peores resultados que los pacientes con tumores con baja expresión (mSG 16 vs 43 meses; P = 0,052).
-	Los datos apoyan la necesidad de estrategias terapéuticas guiadas por biomarcadores en GEA avanzado.

]]></description>
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					<p class="elementor-heading-title elementor-size-default">Publicación científica 2026</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">01 de junio de 2026</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">Terán E, Pazo R, Caritá L, Alsina M, Hierro C, Blanco C, Reboredo M, Landolfi S, Zucchiatti A, Visa L, Calvo A, López A, Vidal-Tocino R, Agra C, Alés I, Foti S, García-Paredes B, Genovesi V, Fornaro L, Sauri T, Macías I, Martínez E, Martínez J, Buges C, Ribera P, Herranz JM, Acosta D, Vivancos A, Tabernero J, Élez E, Tian TV, Macarulla T.</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Autora de la revisión:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">María Nieva Muñoz, Hospital de la Santa Creu i Sant Pau. Barcelona (Miembro de la Asamblea General del Grupo TTD)</p>				</div>
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									<p>El estudio de Terán et al. analiza la expresión de CLDN18.2 en 563 pacientes europeos con adenocarcinoma gastroesofágico avanzado. La expresión alta de CLDN18.2 (≥75% de células tumorales) se detectó en el 48,3% de los casos, una prevalencia superior a la de los ensayos pivotales. La expresión se asoció con histología difusa y afectación peritoneal, y se solapó con otros biomarcadores en más del 20% de los pacientes. Mientras que CLDN18.2 no modificó los resultados con quimioterapia sola, sí se asoció con mejor respuesta a la terapia anti-HER2 y con una tendencia a peores resultados con inmunoterapia.</p><p><strong>Conclusiones:</strong></p><ul><li>La expresión alta de CLDN18.2 es más prevalente en Europa (48,3%) que en las series asiáticas y los ensayos pivotales (~24-38%).</li><li>Se asocia con histología difusa, células en anillo de sello y afectación peritoneal.</li><li>No tiene impacto en los resultados de supervivencia con quimioterapia de primera línea.</li><li>En los tumores HER2 positivos, aquellos con expresión alta de CLDN18.2 se asociaron con mejor mSLP con terapia anti-HER2 (17 vs 8,9 meses; P = 0,03).</li><li>Los pacientes con tumores expresión alta de CLDN18.2 tratados con inmunoterapia mostraron tendencia a peores resultados que los pacientes con tumores con baja expresión (mSG 16 vs 43 meses; P = 0,052).</li><li>Los datos apoyan la necesidad de estrategias terapéuticas guiadas por biomarcadores en GEA avanzado.</li></ul>								</div>
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					<wfw:commentRss>https://grupottd.org/claudina-18-2-en-adenocarcinoma-gastroesofagico-prevalencia-solapamiento-biomarcador-e-impacto-clinico-en-cohorte-europea/feed/</wfw:commentRss>
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		<title>Cáncer gástrico HER2-positivo: resultados del estudio fase III KC-WISE</title>
		<link>https://grupottd.org/cancer-gastrico-her2-positivo-resultados-del-estudio-fase-iii-kc-wise/</link>
					<comments>https://grupottd.org/cancer-gastrico-her2-positivo-resultados-del-estudio-fase-iii-kc-wise/#respond</comments>
		
		<dc:creator><![CDATA[Susana Rodríguez]]></dc:creator>
		<pubDate>Thu, 12 Mar 2026 09:27:50 +0000</pubDate>
				<category><![CDATA[Artículos comentados]]></category>
		<category><![CDATA[Anbenitamab]]></category>
		<category><![CDATA[Anticuerpos biespecíficos]]></category>
		<category><![CDATA[Cáncer gástrico]]></category>
		<category><![CDATA[Ensayo fase III]]></category>
		<category><![CDATA[HER2 positivo]]></category>
		<category><![CDATA[Oncología digestiva]]></category>
		<category><![CDATA[Post-trastuzumab]]></category>
		<category><![CDATA[Segunda línea]]></category>
		<category><![CDATA[Terapia dirigida]]></category>
		<category><![CDATA[Unión gastroesofágica]]></category>
		<guid isPermaLink="false">https://grupottd.org/?p=12607</guid>

					<description><![CDATA[El ensayo fase III KC-WISE evaluó la eficacia y seguridad de anbenitamab, un anticuerpo biespecífico anti-HER2, en combinación con quimioterapia en pacientes con adenocarcinoma gástrico o de la unión gastroesofágica HER2-positivo previamente tratados con trastuzumab. En un análisis preliminar preespecificado, la combinación demostró mejoras significativas en supervivencia libre de progresión, supervivencia global y tasa de respuesta objetiva frente a quimioterapia sola, con un perfil de seguridad manejable, lo que sugiere su potencial como nueva estrategia terapéutica en este escenario clínico.]]></description>
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					<h5 class="elementor-heading-title elementor-size-default">Edición:</h5>				</div>
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					<p class="elementor-heading-title elementor-size-default">Publicación científica 2026</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Fecha:</h4>				</div>
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				<div class="elementor-element elementor-element-2294010a elementor-widget elementor-widget-heading" data-id="2294010a" data-element_type="widget" data-e-type="widget" data-widget_type="heading.default">
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					<p class="elementor-heading-title elementor-size-default">12 de marzo de 2026</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Autores:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">Liu R, Zhao J, Zhang R, Liu B, Liu Y, Li S, Chen Y, Yang H, Liu Z, Li Z, Qin Y, Huang M, Ba Y, Zhang H, Qu Y, Du Y, Deng T, Yang M, Hou X, Liu C, Ning F, Liu YP, Wu X, Xie Y, An Y, Zou K, She L, Xu J. </p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Autor de la revisión:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">Eduardo Terán Brage. Hospital Universitario Vall d`Hebron – Vall d`hebron Institute of Oncology (VHIO) (Miembro de la Asamblea General del Grupo TTD)</p>				</div>
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									<p>El ensayo fase III KC-WISE evaluó la eficacia y seguridad de anbenitamab, un anticuerpo biespecífico anti-HER2, en combinación con quimioterapia en pacientes con adenocarcinoma gástrico o de la unión gastroesofágica HER2-positivo previamente tratados con trastuzumab. En un análisis preliminar preespecificado, la combinación demostró mejoras significativas en supervivencia libre de progresión, supervivencia global y tasa de respuesta objetiva frente a quimioterapia sola, con un perfil de seguridad manejable, lo que sugiere su potencial como nueva estrategia terapéutica en este escenario clínico.</p>								</div>
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		<item>
		<title>FGFR2b en adenocarcinoma gástrico avanzado y de la unión gastroesofágica</title>
		<link>https://grupottd.org/fgfr2b-en-adenocarcinoma-gastrico-avanzado-y-de-la-union-gastroesofagica/</link>
					<comments>https://grupottd.org/fgfr2b-en-adenocarcinoma-gastrico-avanzado-y-de-la-union-gastroesofagica/#respond</comments>
		
		<dc:creator><![CDATA[Administrador CMLD Pruebas]]></dc:creator>
		<pubDate>Mon, 29 Sep 2025 22:26:07 +0000</pubDate>
				<category><![CDATA[Artículos comentados]]></category>
		<category><![CDATA[Adenocarcinoma gástrico]]></category>
		<category><![CDATA[Biomarcadores oncológicos]]></category>
		<category><![CDATA[Cáncer gástrico]]></category>
		<category><![CDATA[FGFR2 / FGFR2b]]></category>
		<category><![CDATA[Medicina personalizada]]></category>
		<category><![CDATA[Oncología digestiva]]></category>
		<category><![CDATA[Población japonesa]]></category>
		<category><![CDATA[Terapias moleculares]]></category>
		<category><![CDATA[Tratamientos dirigidos]]></category>
		<category><![CDATA[Variabilidad geográfica]]></category>
		<guid isPermaLink="false">https://grupottd.org/?p=7718</guid>

					<description><![CDATA[El tratamiento del cáncer gástrico avanzado ha mejorado gracias a terapias dirigidas e inmunoterapia basadas en perfiles moleculares. FGFR2b ha surgido como un biomarcador relevante en tumores gástricos y de la unión gastroesofágica, con ensayos fase 3 en curso. Este estudio retrospectivo en población japonesa analizó 492 pacientes]]></description>
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					<h2 class="elementor-heading-title elementor-size-default">FGFR2b en adenocarcinoma gástrico avanzado y de la unión gastroesofágica</h2>				</div>
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					<h5 class="elementor-heading-title elementor-size-default">Edición:</h5>				</div>
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					<p class="elementor-heading-title elementor-size-default">Publicación científica 2025</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Fecha:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">30 de julio 2025</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Autor:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">Sato S, Rhodes SL, Aoki Y, Nakayama I, Hashimoto T, Hawkins J, Yanes RE, Chang CH, Nakamura Y, Kawazoe A, Mishima S, Kotani D, Kuboki Y, Bando H, Kojima T, Yoshino S, Reading S, Honeycutt H, Finger E, Endo I, Sakamoto N, Kuwata T, Yoshino T, Shitara K. </p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Autor de la revisión:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">Tania Fleitas Kanonnikoff. Hospital Clínico Universitario de Valencia- INCLIVA.. (Miembro de la Asamblea General del Grupo TTD)</p>				</div>
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									<p>El tratamiento del cáncer gástrico avanzado ha mejorado gracias a terapias dirigidas e inmunoterapia basadas en perfiles moleculares. FGFR2b ha surgido como un biomarcador relevante en tumores gástricos y de la unión gastroesofágica, con ensayos fase 3 en curso. Este estudio retrospectivo en población japonesa analizó 492 pacientes, encontrando una prevalencia de FGFR2b 2+/3+ del 15,4% (29,8% en muestras recientes). Más de la mitad de los casos FGFR2b+ fueron negativos para otros biomarcadores. No se halló asociación entre sobreexpresión de FGFR2b y supervivencia global.</p>								</div>
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							Publicado por:						</span>
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						Grupo TTD					</p>
				
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					<wfw:commentRss>https://grupottd.org/fgfr2b-en-adenocarcinoma-gastrico-avanzado-y-de-la-union-gastroesofagica/feed/</wfw:commentRss>
			<slash:comments>0</slash:comments>
		
		
			</item>
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		<title>Avances en primera línea con cadonilimab en cáncer gástrico y de la unión gastroesofágica HER2-negativo</title>
		<link>https://grupottd.org/avances-en-primera-linea-con-cadonilimab-en-cancer-gastrico-y-de-la-union-gastroesofagica-her2-negativo/</link>
					<comments>https://grupottd.org/avances-en-primera-linea-con-cadonilimab-en-cancer-gastrico-y-de-la-union-gastroesofagica-her2-negativo/#respond</comments>
		
		<dc:creator><![CDATA[Administrador CMLD Pruebas]]></dc:creator>
		<pubDate>Thu, 31 Jul 2025 09:43:57 +0000</pubDate>
				<category><![CDATA[Artículos comentados]]></category>
		<category><![CDATA[Biomarcadores]]></category>
		<category><![CDATA[Biomarcadores PD-L1]]></category>
		<category><![CDATA[Cadonilimab;Inmunoterapia PD-1 / CTLA-4]]></category>
		<category><![CDATA[Cáncer de la unión gastroesofágica]]></category>
		<category><![CDATA[Cáncer gástrico]]></category>
		<category><![CDATA[HER2 negativo]]></category>
		<category><![CDATA[HER2 positivo]]></category>
		<category><![CDATA[HER2-negativo]]></category>
		<category><![CDATA[HER2–]]></category>
		<category><![CDATA[HER2+]]></category>
		<category><![CDATA[Quimioterapia basada en oxaliplatino]]></category>
		<category><![CDATA[Terapias anti-HER2]]></category>
		<guid isPermaLink="false">https://grupottd.org/?p=6837</guid>

					<description><![CDATA[El ensayo fase III COMPASSION-15 marca un avance significativo en el manejo del adenocarcinoma gástrico y de la unión gastroesofágica (GEJ) avanzado HER2-negativo. Este estudio evaluó la combinación de cadonilimab, un anticuerpo biespecífico PD-1/CTLA-4, junto con quimioterapia basada en oxaliplatino y capecitabina frente a quimioterapia estándar más placebo.]]></description>
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					<h2 class="elementor-heading-title elementor-size-default">Avances en primera línea con cadonilimab en cáncer gástrico y de la unión gastroesofágica HER2-negativo</h2>				</div>
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					<h5 class="elementor-heading-title elementor-size-default">Edición:</h5>				</div>
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					<p class="elementor-heading-title elementor-size-default">Publicación científica 2025</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Fecha:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">16 de septiembre de 2025</p>				</div>
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					<h4 class="elementor-heading-title elementor-size-default">Autor de la revisión:</h4>				</div>
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					<p class="elementor-heading-title elementor-size-default">Dr. Juan José Reina Zoilo – Servicio de Oncología Médica, Hospital Universitario Virgen Macarena de Sevilla). Nature Medicine (abril 2025)</p>				</div>
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									<p>El ensayo fase III COMPASSION-15 marca un avance significativo en el manejo del adenocarcinoma gástrico y de la unión gastroesofágica (GEJ) avanzado HER2-negativo. Este estudio evaluó la combinación de cadonilimab, un anticuerpo biespecífico PD-1/CTLA-4, junto con quimioterapia basada en oxaliplatino y capecitabina frente a quimioterapia estándar más placebo. </p>
<p>En una cohorte de 610 pacientes no tratados previamente, el brazo cadonilimab logró una supervivencia global (SG) de 14,1 meses frente a 11,1 meses en el grupo control (HR 0,66; p&lt;0,001), con beneficios consistentes incluso en pacientes con baja expresión de PD-L1. La supervivencia libre de progresión (SLP) también mejoró (7,0 vs 5,3 meses), así como la tasa de respuesta objetiva (65,2% vs 48,9%) y la duración de la respuesta (8,8 vs 4,4 meses). </p>
<p>El perfil de seguridad mostró un incremento en eventos inmunomediados grado ≥3, fundamentalmente hematológicos, pero manejables clínicamente. </p>
<h5>Relevancia clínica </h5>
<p>Confirma el papel de la doble inhibición inmunitaria (PD-1 + CTLA-4) en tumores digestivos. Amplía opciones terapéuticas en pacientes HER2-negativos, especialmente aquellos con baja expresión de PD-L1. Plantea la necesidad de nuevos biomarcadores para seleccionar mejor a los candidatos a esta estrategia. Podría integrarse en los futuros algoritmos de primera línea para cáncer gástrico y GEJ avanzado. </p>
<p>Conclusión: Cadonilimab más quimioterapia representa una alternativa prometedora para pacientes con adenocarcinoma gástrico y GEJ avanzado HER2-negativo. Su beneficio en supervivencia global y progresión, junto a un perfil de toxicidad controlable, refuerza su potencial para convertirse en un nuevo estándar de tratamiento.</p>
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		<title>Avances presentados en ASCO 2025 sobre cáncer esofagogástrico</title>
		<link>https://grupottd.org/avances-presentados-en-asco-2025-sobre-cancer-esofagogastrico/</link>
					<comments>https://grupottd.org/avances-presentados-en-asco-2025-sobre-cancer-esofagogastrico/#respond</comments>
		
		<dc:creator><![CDATA[Administrador CMLD Pruebas]]></dc:creator>
		<pubDate>Tue, 29 Jul 2025 08:39:20 +0000</pubDate>
				<category><![CDATA[Eventos]]></category>
		<category><![CDATA[ASCO]]></category>
		<category><![CDATA[Biomarcadores]]></category>
		<category><![CDATA[Cáncer gástrico]]></category>
		<category><![CDATA[ESMO]]></category>
		<category><![CDATA[HER2 negativo]]></category>
		<category><![CDATA[HER2 positivo]]></category>
		<category><![CDATA[HER2–]]></category>
		<category><![CDATA[HER2+]]></category>
		<category><![CDATA[inmunoterapia]]></category>
		<category><![CDATA[Quimio-radioterapia]]></category>
		<category><![CDATA[Terapias anti-HER2]]></category>
		<category><![CDATA[Triple negativo]]></category>
		<guid isPermaLink="false">https://grupottd.org/?p=6800</guid>

					<description><![CDATA[La Dra. Nieves Martínez Lago, del Hospital Clínico Universitario de Santiago de Compostela, pone en valor la investigación de vanguardia en el campo de la Oncología digestiva. La Doctora del Grupo TTD destaca las últimas novedades en cáncer esofagogástrico presentadas en el '2025 ASCO Annual Meeting'.]]></description>
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.elementor-element.elementor-element-2d876450{--e-con-grid-template-columns:repeat(1, 1fr);--grid-auto-flow:row;}}</style>							<content:encoded><![CDATA[		<div data-elementor-type="wp-post" data-elementor-id="6800" class="elementor elementor-6800" data-elementor-post-type="post">
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					<h2 class="elementor-heading-title elementor-size-default">Avances presentados en ASCO 2025 sobre cáncer esofagogástrico</h2>				</div>
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									<p>La Dra. Nieves Martínez Lago, del Hospital Clínico Universitario de Santiago de Compostela, pone en valor la investigación de vanguardia en el campo de la Oncología digestiva. La Doctora del Grupo TTD destaca las últimas novedades en cáncer esofagogástrico presentadas en el &#8216;2025 ASCO Annual Meeting&#8217;. Estos avances están enfocados a:</p>
<ul>
<li>ENFERMEDAD LOCALMENTE AVANZADA</li>
<li>ENFERMEDAD METASTÁSICA HER2 POSITIVA</li>
<li>ENFERMEDAD METASTÁSICA HER2 NEGATIVA</li>
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				En el congreso ASCO 2025 se han compartido resultados clave de ensayos clínicos que marcan un cambio en el tratamiento del cáncer gástrico y de la unión gastroesofágica. Destaca el estudio MATTERHORN, que demuestra que la combinación de durvalumab + FLOT mejora la supervivencia libre de eventos y puede convertirse en un nuevo estándar perioperatorio.			</p>
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									<p>Otros ensayos, como CheckMate 577 y ESOPEC, confirman beneficios con inmunoterapia y quimioterapia perioperatoria, mientras que los estudios DESTINY-Gastric04 y zanidatamab ofrecen nuevas alternativas para pacientes con tumores HER2 positivos. En los casos HER2 negativos, la combinación de lenvatinib y pembrolizumab muestra mejoras en progresión aunque sin impacto claro en supervivencia global. </p>
<p>Estos avances consolidan el papel de las terapias dirigidas e inmunoterapias en el manejo del cáncer esofagogástrico, con opciones cada vez más personalizadas para pacientes según biomarcadores y estadios de la enfermedad. </p>
<p>Consulta los abstract:</p>								</div>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://meetings.asco.org/abstracts-presentations/245972">
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									<span class="elementor-button-text">MATTERHORN</span>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://ascopubs.org/doi/10.1200/JCO.2025.43.16_suppl.4000" target="_blank">
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									<span class="elementor-button-text">CheckMate 577</span>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://ascopubs.org/doi/10.1200/JCO.2025.43.16_suppl.4000" target="_blank">
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									<span class="elementor-button-text">ESOPEC</span>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://ascopubs.org/doi/10.1200/JCO.2025.43.16_suppl.4000" target="_blank">
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									<span class="elementor-button-text">DESTINY-Gastric04</span>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://ascopubs.org/doi/10.1200/JCO.2025.43.16_suppl.4000" target="_blank">
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									<span class="elementor-button-text">Abstract 4013</span>
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					<a class="elementor-button elementor-button-link elementor-size-sm" href="https://ascopubs.org/doi/10.1200/JCO.2025.43.16_suppl.4000" target="_blank">
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									<span class="elementor-button-text">LEAP-015</span>
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									<span class="elementor-button-text">CT041-ST-01</span>
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