RESUMEN
Contexto: El radio-223 es un emisor de partículas □ con acción específica sobre las metástasis óseas. El estudio ALSYMPCA demostró que el radio-223 prolonga la supervivencia global y retrasa la aparición de eventos óseos en pacientes con cáncer de próstata resistente a la castración con metástasis óseas (CPRCm) sintomáticas y sin metástasis viscerales, con un buen perfil de seguridad. Objetivo: Revisión de la nueva evidencia científica de radio-223 a partir de análisis preespecificados y post hoc del estudio ALSYMPCA y de programas de acceso precoz posteriores a la publicación del estudio ALSYMPCA, con el fin de aportar nuevos datos en el manejo de pacientes con CPRCm. Adquisición de la evidencia: Búsqueda de evidencia en PubMed y en abstracts de congresos de urología y oncología internacionales, así como ensayos clínicos en marcha (ClinicalTrials.gov). Síntesis de la evidencia: Los resultados de los estudios revisados ofrecen resultados prometedores que ampliarían el beneficio terapéutico de radio-223 a pacientes con síntomas leves e incluso asintomáticos. También aportan evidencia preliminar acerca del beneficio del tratamiento con radio-223 tras el fracaso a docetaxel o a enzalutamida o abiraterona o la combinación de radio-223 con estos u otros agentes terapéuticos como los dirigidos al hueso o inmunoterapia. Conclusión: El radio-223 puede ser una opción de tratamiento en pacientes con síntomas leves y aportar un beneficio terapéutico tras el fracaso a tratamientos disponibles en la actualidad o en combinación con estos. Esta evidencia ha de ser corroborada en ensayos clínicos antes de ser incorporados en la práctica clínica
Context: Radium-223 is an -particle transmitter with specific action on bone metastases. The Alpharadin in Symptomatic Prostate Cancer Patients (ALSYMPCA) study showed that radium-223 extended overall survival and delayed the onset of bone events in patients with symptomatic castration-resistant prostate cancer with bone metastases (mCRPC) and without visceral metastases, with a good safety profile. Objective: To review the new scientific evidence on radium-223 based on prespecified and post-hoc analyses of the ALSYMPCA study and on early-access programs after the publication of the ALSYMPCA study, thereby providing new data on the management of patients with mCRPC. Acquisition of evidence: We searched for evidence on PubMed and in the abstracts of international urology and oncology congresses, as well as ongoing clinical trials (ClinicalTrials.gov). Synthesis of the evidence: The results of the reviewed studies offer promising results that will broaden the therapeutic benefits of radium-223 to patients with mild symptoms and those with no symptoms. The results also provide preliminary evidence on the benefit of radium-223 treatment after the failure of docetaxel, enzalutamide or abiraterone or the combination of radium-223 with these agents or other therapeutic agents such as bone-targeted agents and immunotherapy. Conclusion: Radium-223 can be a treatment option for patients with mild symptoms and can provide a therapeutic benefit after failure of currently available treatments or in combination with these treatments. This evidence should be corroborated in clinical trials before being added to clinical practice
Asunto(s)
Humanos , Neoplasias Óseas/radioterapia , Neoplasias de la Próstata/radioterapia , Dosis de Radiación , Radio (Elemento)/uso terapéutico , Receptores Androgénicos/efectos de la radiación , Receptores Androgénicos/uso terapéuticoRESUMEN
CONTEXT: Radium-223 is an â¡ -particle transmitter with specific action on bone metastases. The Alpharadin in Symptomatic Prostate Cancer Patients (ALSYMPCA) study showed that radium-223 extended overall survival and delayed the onset of bone events in patients with symptomatic castration-resistant prostate cancer with bone metastases (mCRPC) and without visceral metastases, with a good safety profile. OBJECTIVE: To review the new scientific evidence on radium-223 based on prespecified and post-hoc analyses of the ALSYMPCA study and on early-access programs after the publication of the ALSYMPCA study, thereby providing new data on the management of patients with mCRPC. ACQUISITION OF EVIDENCE: We searched for evidence on PubMed and in the abstracts of international urology and oncology congresses, as well as ongoing clinical trials (ClinicalTrials.gov). SYNTHESIS OF THE EVIDENCE: The results of the reviewed studies offer promising results that will broaden the therapeutic benefits of radium-223 to patients with mild symptoms and those with no symptoms. The results also provide preliminary evidence on the benefit of radium-223 treatment after the failure of docetaxel, enzalutamide or abiraterone or the combination of radium-223 with these agents or other therapeutic agents such as bone-targeted agents and immunotherapy. CONCLUSION: Radium-223 can be a treatment option for patients with mild symptoms and can provide a therapeutic benefit after failure of currently available treatments or in combination with these treatments. This evidence should be corroborated in clinical trials before being added to clinical practice.