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1.
Rev. esp. med. nucl. imagen mol. (Ed. impr.) ; 42(1): 10-15, ene.-feb. 2023. ilus, tab, graf
Article in Spanish | IBECS | ID: ibc-214743

ABSTRACT

Objetivo La respuesta histopatológica a la quimioterapia neoadyuvante (NAC) es esencial en pacientes con cáncer de mama. La predicción de la respuesta histopatológica a la NAC en pacientes con cáncer de mama localmente avanzado es esencial para una estrategia de tratamiento óptima. El enfoque actual del tratamiento adyuvante o neoadyuvante se basa en el subtipo molecular. La obesidad puede afectar la respuesta a la quimioterapia. El objetivo de este estudio es evaluar la relación entre la actividad metabólica del tejido adiposo (AT) y la respuesta histopatológica de la NAC. Definir, la asociación del índice de masa corporal (IMC) y el valor del «Standard Uptake Value» (SUV) de AT medido por tomografía por emisión de positrones (PET/TC) con la respuesta a la quimioterapia neoadyuvante. Material y métodos Hemos incluido 116 pacientes consecutivos con cáncer de mama, estadio II y III, que acudieron para la realización de un PET/TC previo a NAC entre 2016 y 2020. Hemos calculado los parámetros metabólicos del tejido adiposo visceral (SUV del VAT), del tejido adiposo subcutáneo (SUV del SAT) y la relación entre ambos (relación V/S). Todos estos biomarcadores los hemos relacionado con la respuesta histopatológica de los pacientes. Resultados El análisis univariante muestra una correlación significativa entre la respuesta histopatológica con el estadio clínico (p<0,001), HER2 positivo (p<0,001), SUV del VAT (p=0,037), densidad del VAT (p=0,043) y la relación V/S (p=0,003). El análisis multivariante muestra una significación estadística entre HER2 positivo y la relación V/S con la respuesta histopatológica. Se evidencia una correlación positiva del IMC con el volumen del IVA (p<0,001), SUV del IVA (p<0,016), volumen del SAT (p<0,001) y el SUV del SAT (p<0,001). Se evidencia una correlación negativa del IMC con la relación V/S (p=0,039) y la densidad del SAT (p=0,003) (AU)


Introduction and objective Prediction of the pathologic response to neoadjuvant chemotherapy (NAC) in patients with locally advanced breast cancer is essential for optimal treatment strategy. The current approach of adjuvant or neoadjuvant treatment is based on the molecular subtype. Obesity may have affected chemotherapy response. This study aims to evaluate the relationship between metabolic activity of adipose tissue (AT) and pathological responses to NAC. And to define the association with body mass index (BMI) and metabolic parameters of standardized uptake value (SUV) of adipose tissue measured by positron emission computed tomography (PET/CT). Material and methods One-hundred and sixteen consecutive patients with stage II and III breast cancer who underwent PET/CT before receiving NAC, were evaluated in the study. Metabolic parameters of visceral adipose tissue (VAT-SUV), subcutaneous adipose tissue (SAT-SUV), and calculated SUV of visceral-to-subcutaneous ratio (V/S-ratio) were regarded. The relationship between SUV of AT and pathologic response was evaluated from medical records retrospectively. Results Univariate-analysis revealed that good pathological response was significantly associated with clinical stage (p<0.001), HER-2 positivity (p<0.001), VAT-SUV (p=0.037), VAT-density (p=0.043) and V/S-ratio (p=0.003). In multivariate-analysis clinical stage, HER-2 positivity and V/S-ratio were found to have statistically effect on pathological response. VAT-volume (p<0.001), VAT-SUV (p=0.016), SAT-volume (p<0.001) and SAT-SUV (p<0.001) has positive correlation with BMI value. On the other hand, V/S-ratio (p=0.039) and SAT-density (p=0.003) has negative correlation with BMI. Conclusion Metabolic activity of AT is associated with BMI and effected chemotherapy responses. Low V/S ratio was associated with high BMI and poor pathological response to NAC. V/S ratio may be a useful marker for the prediction of NAC responses (AU)


Subject(s)
Humans , Female , Adult , Middle Aged , Aged , Adipose Tissue/diagnostic imaging , Adipose Tissue/pathology , Breast Neoplasms , Neoadjuvant Therapy , Positron Emission Tomography Computed Tomography/methods , Breast Neoplasms/diagnostic imaging , Breast Neoplasms/drug therapy , Breast Neoplasms/pathology
2.
Actas urol. esp ; 46(9): 550-556, nov. 2022. tab, graf
Article in Spanish | IBECS | ID: ibc-211497

ABSTRACT

Objetivo: El cáncer de próstata (CaP) es el segundo tumor sólido más frecuente en los varones y la quinta causa de muerte relacionada con el cáncer. En los estadios avanzados de la enfermedad se administran tratamientos paliativos en lugar de terapias curativas, por lo que, conocer los posibles indicadores predictivos, parece importante. Se revisaron retrospectivamente los pacientes con cáncer de próstata resistente a la castración (CPRC) que recibieron quimioterapia con docetaxel (Dx). El objetivo de este estudio fue investigar si el intervalo libre de Dx podría tener un valor predictivo para el CaP e influir en las terapias secuenciales.Material y métodos: Este ensayo clínico se realizó en 104 pacientes en la Clínica de Oncología de la Universidad de Medeniyet en 2018-2020. Todos los pacientes con CPRC metastásico recibieron Dx como primer tratamiento y fueron sometidos a terapia dirigida al receptor de andrógenos (ARAT, por sus siglas en inglés) tras la progresión de la enfermedad. Se analizó el tiempo hasta la progresión de los pacientes después de la terapia con Dx y los efectos sobre el tratamiento secuencial.Resultados: Posterior al tratamiento con Dx, los pacientes recibieron ARAT (abiraterona [ABI] n: 49 [47,1%] y enzalutamida [ENZ] n: 54 [51,9%]) como tratamiento de segunda línea, excepto un paciente que recibió cabazitaxel. Hubo una relación estadísticamente significativa entre el intervalo libre de Dx y la duración de la respuesta al ARAT (p<0,001). El tiempo de respuesta al tratamiento con ARAT fue <10,5 meses en todos los pacientes con un período de intervalo libre de Dx<9 meses.Conclusiones: Nuestros resultados avalan la hipótesis de que el intervalo libre de Dx puede ser un factor predictivo para el CPRC. El CPRC podría clasificarse como enfermedad sensible al Dx o resistente al Dx en función del intervalo libre de Dx; y la decisión sobre los tratamientos posteriores podría tomarse con base en esta información. (AU)


Objective: Prostate cancer (PCa) is the second most common solid tumor in men and the fifth leading cause of cancer-related death. In advanced stage, palliative treatments are used instead of curative therapies. Therefore, finding predictive indicators seems crucial. Patients with castration-resistant prostate cancer (CRPC) that received Dx chemotherapy have been retrospectively reviewed. The aim of this study was to investigate whether docetaxel (Dx)-free interval could have a predictive value for PCa and influence other sequential therapies.Material and methods: This clinical trial study was performed on 104 patients at Medeniyet University Oncology Clinic in 2018-2020. All CRPC patients had metastases, received Dx as first-line treatment and underwent androgen receptor axis targeted (ARAT) therapy after disease progression. We analyzed patients’ progression time after Dx therapy and the effects on sequential treatment.Results: After Dx therapy, all patients received ARAT (abiraterone (ABI) n: 49 (47.1%) and enzalutamide (ENZ) n: 54 (51.9%)) as a second-line treatment, except for one patient who received cabazitaxel. There was a statistically significant relationship between the Dx-free interval and duration of response to ARAT (P<.001). The response time of ARAT treatment was <10.5 months in all patients whose Dx-free interval period was <9 months.Conclusions: Our findings support the theory that Dx-free interval can be a predictive factor for CRPC. CRPC disease can be classified as Dx-sensitive disease or Dx-resistance disease, based on the Dx-free interval. Decision on subsequent treatments could be made considering this information. (AU)


Subject(s)
Humans , Male , Middle Aged , Aged , Aged, 80 and over , Prostatic Neoplasms, Castration-Resistant/drug therapy , Prostatic Neoplasms, Castration-Resistant/pathology , Prostate-Specific Antigen/blood , Docetaxel/therapeutic use , Antineoplastic Agents/therapeutic use , Retrospective Studies , Treatment Outcome , Disease-Free Survival
3.
Actas Urol Esp (Engl Ed) ; 46(9): 550-556, 2022 11.
Article in English, Spanish | MEDLINE | ID: mdl-35786543

ABSTRACT

OBJECTIVE: Prostate cancer (PCa) is the second most common solid tumor in men and the fifth leading cause of cancer-related death. In advanced stage, palliative treatments are used instead of curative therapies. Therefore, finding predictive indicators seems crucial. Patients with castration-resistant prostate cancer (CRPC) that received Dx chemotherapy have been retrospectively reviewed. The aim of this study was to investigate whether docetaxel (Dx)-free interval could have a predictive value for PCa and influence other sequential therapies. MATERIAL AND METHODS: This clinical trial study was performed on 104 patients at Medeniyet University Oncology Clinic in 2018-2020. All CRPC patients had metastases, received Dx as first-line treatment and underwent androgen receptor axis targeted (ARAT) therapy after disease progression. We analyzed patients' progression time after Dx therapy and the effects on sequential treatment. RESULTS: After Dx therapy, all patients received ARAT (abiraterone (ABI) n: 49 (47.1%) and enzalutamide (ENZ) n: 54 (51.9%)) as a second-line treatment, except for one patient who received cabazitaxel. There was a statistically significant relationship between the Dx-free interval and duration of response to ARAT (p<0.001). The response time of ARAT treatment was <10.5 months in all patients whose Dx-free interval period was <9 months. CONCLUSIONS: Our findings support the theory that Dx-free interval can be a predictive factor for CRPC. CRPC disease can be classified as Dx-sensitive disease or Dx-resistance disease, based on the Dx-free interval. Decision on subsequent treatments could be made considering this information.


Subject(s)
Prostatic Neoplasms, Castration-Resistant , Humans , Male , Disease-Free Survival , Docetaxel/therapeutic use , Prostate-Specific Antigen , Prostatic Neoplasms, Castration-Resistant/drug therapy , Prostatic Neoplasms, Castration-Resistant/pathology , Retrospective Studies , Treatment Outcome
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