Efecto de diferentes esquemas de terapia de deprivación androgénica sobre la densidad mineral ósea de pacientes con cáncer de próstata / Effect of different schemes of androgen deprivation therapy on bone mass density in prostate cancer patients

Objetivos: Evaluar aspectos del metabolismo óseo basal en pacientes con cáncer de próstata y el efecto, en práctica clínica habitual, de diferentes esquemas de tratamiento (intermitente o continuo) con agonistas de la hormona liberadora de hormona luteinizante (LH-RH) y del denosumab en la evolución de la densidad mineral ósea (DMO).MétodosEstudio observacional retrospectivo de una cohorte de pacientes con cáncer de próstata en tratamiento con agonistas LH-RH, valorados en el servicio de reumatología de un hospital de tercer nivel. Se recogieron datos demográficos, índice de FRAX, esquema de tratamiento LH-RH, tratamiento de osteoporosis, datos de laboratorio y de DMO. Se usaron modelos de regresión lineal de efecto mixto analizando la interacción de los esquemas de tratamiento LH-RH, denosumab y la evolución de DMO.ResultadosSe incluyeron 83 pacientes (73±8años). Evaluación basal: el 16% de los pacientes presentaron osteoporosis densitométrica y además un 27% un riesgo elevado de fractura (FRAX). El 80% tenían niveles de vitaminaD <30ng/l. La pauta intermitente de agonistas LH-RH y los niveles elevados de vitaminaD se asociaron a mejor DMO basal. No se detectó asociación entre la evolución de la DMO y las pautas de tratamiento de agonistas LH-RH, pero sí se encontró una correlación positiva con denosumab.ConclusionesUna elevada proporción de pacientes presentaban un alto riesgo de fractura o niveles insuficientes de vitaminaD no detectados previamente. El estudio tanto del metabolismo óseo como del riesgo de fractura son convenientes en estos pacientes. En práctica clínica habitual el efecto sobre la DMO del denosumab se detecta a corto plazo, mientras que el del esquema intermitente con agonistas LH-RH es menos evidente. (AU)

Objectives: To evaluate the aspects of the basal bone health status in prostate cancer patients. Furthermore, to evaluate in a real-world setting the effect of different schemes (intermittent or continuous) of androgen deprivation therapy (ADT) and the effect of denosumab in bone mass density (BMD).MethodsObservational, retrospective study of a cohort of prostate cancer patients in treatment with luteinizing hormone-releasing hormone (LH-RH) agonists, evaluated in the rheumatology department of a tertiary center. Demographics, FRAX score, LH-RH treatment scheme, osteoporosis treatment, laboratory data and BMD were collected. Mixed effect regression models to analyze the interaction between LH-RH treatment scheme, denosumab and BMD evolution were used.ResultsEighty-three patients (mean age 71±8years) were included. At the basal evaluation, 16% of patients presented densitometric osteoporosis and 27% of patients presented high fracture risk. Eighty percent of patients had inadequate vitaminD levels. VitaminD >30ng/mL was correlated with higher T-scores. There was no association between LH-RH treatment scheme and BMD evolution, however there was a positive association with denosumab.ConclusionA high proportion of patients presented elevated fracture risk or inadequate vitaminD levels, not previously recognized. Bone health assessment and fracture risk evaluation are convenient in these patients. In a real-world setting, the effect of denosumab in BMD is detected, however the effect of intermittent LH-RH schema treatment is less evident. (AU)

[Effect of different schemes of androgen deprivation therapy on bone mass density in prostate cancer patients]. / Efecto de diferentes esquemas de terapia de deprivación androgénica sobre la densidad mineral ósea de pacientes con cáncer de próstata.

OBJECTIVES: To evaluate the aspects of the basal bone health status in prostate cancer patients. Furthermore, to evaluate in a real-world setting the effect of different schemes (intermittent or continuous) of androgen deprivation therapy (ADT) and the effect of denosumab in bone mass density (BMD). METHODS: Observational, retrospective study of a cohort of prostate cancer patients in treatment with luteinizing hormone-releasing hormone (LH-RH) agonists, evaluated in the rheumatology department of a tertiary center. Demographics, FRAX score, LH-RH treatment scheme, osteoporosis treatment, laboratory data and BMD were collected. Mixed effect regression models to analyze the interaction between LH-RH treatment scheme, denosumab and BMD evolution were used. RESULTS: Eighty-three patients (mean age 71±8years) were included. At the basal evaluation, 16% of patients presented densitometric osteoporosis and 27% of patients presented high fracture risk. Eighty percent of patients had inadequate vitaminD levels. VitaminD >30ng/mL was correlated with higher T-scores. There was no association between LH-RH treatment scheme and BMD evolution, however there was a positive association with denosumab. CONCLUSION: A high proportion of patients presented elevated fracture risk or inadequate vitaminD levels, not previously recognized. Bone health assessment and fracture risk evaluation are convenient in these patients. In a real-world setting, the effect of denosumab in BMD is detected, however the effect of intermittent LH-RH schema treatment is less evident.