956 resultados para Moreno-Durán, Rafael Humberto


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Introduction: Because a dose–response relationship is characteristic of conventional chemotherapy, this concept is widely used for the development of novel cytotoxic (CTX) drugs. However, the need to reach the MTD to obtain optimal benefit with molecularly targeted agents (MTA) is controversial. In this study, we evaluated the relationship between dose and efficacy in a large cohort of phase I patients with solid tumors.

Experimental Design: We collected data on 1,182 consecutive patients treated in phase I trials in 14 European institutions in 2005–2007. Inclusion criteria were: (i) patients treated within completed single-agent studies in which a maximum-administered dose was defined and (ii) RECIST/survival data available.

Results: Seventy-two percent of patients were included in trials with MTA (N = 854) and 28% in trials with CTX (N = 328). The objective response (OR) rate was 3% and disease control at 6 months was 11%. OR for CTX was associated with higher doses (median 92% of MTD); this was not the case for MTA, where patients achieving OR received a median of 50% of MTD. For trials with MTA, patients treated at intermediate doses (40%–80%) had better survival compared with those receiving low or high doses (P = 0.038). On the contrary, there was a direct association between higher dose and better OS for CTX agents (P = 0.003).

Conclusion: Although these results support the development of novel CTX based on MTD, we found no direct relationship between higher doses and response with MTA in unselected patients. However, the longest OS was seen in patients treated with MTA at intermediate doses (40%–80% of MTD)

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Tese apresentada para cumprimento dos requisitos necessários à obtenção do grau de Doutor em História Institucional e Política Contemporânea

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Archivo Fotográfico

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Gestión del conocimiento

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Gestión del conocimiento

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Gestión del conocimiento

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Gestión del conocimiento

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Tesis (Maestro en Ciencias con especialidad en Entomología Médica) U.A.N.L.

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Tesis (Maestro en Ciencias en Ingeniería Eléctrica Especialidad Potencia) U.A.N.L. Facultad de Ingeniería Mecánica y Eléctrica, 1987

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Tesis (Maestría en Ciencias en Ingeniería Eléctrica, con especialidad en Potencia) U.A.N.L.

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Tesis (Maestría en Ciencias de la Administración con Especialidad en Finanzas) U.A.N.L.

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Tesis (Maestría en Enfermería, con especialidad en Salud Comunitaria) U.A.N.L.Facultad de Enfermería, 1990

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Tesis (Maestría Contaduría Pública) U.A.N.L.