Cumulative incidence and predictive factors of radiation cystitis in patients with localized prostate cancer

Objetivo: Determinar la incidencia acumulada de la cistitis rádica y la cistitis rádica severa en una cohorte de pacientes de alto volumen e investigar sus potenciales factores predictivos. Métodos: Hemos realizado un análisis retrospectivo de los datos clínicos de pacientes diagnosticados con cáncer de próstata localizado y tratados con radioterapia en nuestra institución (junio 2005-enero 2013), y cuantificado la incidencia acumulada de cistitis rádica. El análisis de regresión de Cox y las curvas de Kaplan-Meier se calcularon para evaluar los determinantes de la cistitis por radiación. Resultados: Se utilizaron datos de 783 pacientes (557 tratados con radioterapia primaria, 188 con adyuvante y 38 con rescate). El tiempo medio de seguimiento fue de 49 meses (P25-P75: 31,8-69,3). A los 5 anos ˜ de seguimiento, la incidencia acumulada de cistitis rádica y cistitis rádica severa fue de 9,1 y 1,6%, respectivamente. No se encontró asociación entre la incidencia de cistitis rádica y la edad, el estadio T tumoral, el nivel de PSA basal, la puntuación de Gleason, la clasificación de riesgo de D’Amico, el ajuste de radioterapia (primario frente a adyuvante frente a rescate) o la dosis de radiación aplicada. Conclusiones: Dentro de nuestra cohorte, la cistitis rádica es una complicación poco frecuente del tratamiento de radioterapia prostática y los casos graves que requieren hospitalización son aún más infrecuentes. No se encontró asociación entre las características del tumor, el ajuste de la radioterapia o la dosis de radiación y la incidencia acumulada de cistitis rádica.Purpose: To determine the cumulative incidence of overall and severe radiation cystitis in a high volume cohort of patients and to investigate its potential predictive factors. Methods: We have performed a retrospective analysis of clinical data from patients diagnosed with localized prostate cancer and treated with radiotherapy at our institution (June 2005- January 2013), and quantified the cumulative incidence of radiation cystitis. Cox regression analysis and Kaplan-Meier curves were computed to evaluate the determinants of radiation cystitis. Results: Data from 783 patients was retrieved (557 treated with primary radiotherapy, 188 with adjuvant and 38 with salvage). Median follow-up time was 49 months (P25-P75: 31.8- 69.3). At 5 years of follow-up, cumulative incidence of overall and severe radiation cystitis was 9.1 and 1.6%, respectively. No association was found between the incidence of radiation cystitis and age, tumor T stage, baseline PSA level, Gleason score, D’Amico risk classification, radiotherapy setting (primary versus adjuvant versus salvage) or radiation dose applied. Conclusions: Within our cohort, radiation cystitis is an uncommon complication of prostatic radiotherapy treatment, and severe cases requiring hospitalization are even more infrequent. We found no association between tumor characteristics, radiotherapy setting or radiation dose and the cumulative incidence of radiation cystiti

Cell Senescence-Related Pathways Are Enriched in Breast Cancer Patients With Late Toxicity After Radiotherapy and Low Radiation-Induced Lymphocyte Apoptosis

Background: Radiation-induced late effects are a common cause of morbidity among cancer survivors. The biomarker with the best evidence as a predictive test of late reactions is the radiation-induced lymphocyte apoptosis (RILA) assay. We aimed to investigate the molecular basis underlying the distinctive RILA levels by using gene expression analysis in patients with and without late effects and in whom we had also first identified differences in RILA levels. Patients and Methods: Peripheral blood mononuclear cells of 10 patients with late severe skin complications and 10 patients without symptoms, selected from those receiving radiotherapy from 1993 to 2007, were mock-irradiated or irradiated with 8 Gy. The 48-h response was analyzed in parallel by RILA assay and gene expression profiling with Affymetrix microarrays. Irradiated and non-irradiated gene expression profiles were compared between both groups. Gene set enrichment analysis was performed to identify differentially expressed biological processes. Results: Although differentially expressed mRNAs did not reach a significant adjusted p-value between patients suffering and not suffering clinical toxicity, the enriched pathways indicated significant differences between the two groups, either in irradiated or non-irradiated cells. In basal conditions, the main differentially expressed pathways between the toxicity and non-toxicity groups were the transport of small molecules, interferon signaling, and transcription. After 8 Gy, the differences lay in pathways highly related to cell senescence like cell cycle/NF-κB, G-protein-coupled receptors, and interferon signaling. Conclusion: Patients at risk of developing late toxicity have a distinctive pathway signature driven by deregulation of immune and cell cycle pathways related to senescence, which in turn may underlie their low RILA phenotype

Understanding variations in the use of hypofractionated radiotherapy and its specific indications for breast cancer: A mixed-methods study

Background and purpose: Radiation oncology guidelines favour hypofractionated whole-breast radiotherapy (HWBRT) over more conventional schemes in the conservative treatment of breast cancer, but its adoption still varies in clinical practice. This study assessed the patterns of HWBRT adoption in Catalonia (Spain). Material and methods: We used a mixed-methods approach based on an explanatory sequential design, first collecting and analysing quantitative data on HWBRT use (>2.5 Gy per fraction) in 11 public radiotherapy centres (2005-2015) and then performing 25 semi-structured interviews with all department heads and reference radiation oncologist/s. Results: Of the 34,859 patients fulfiling the study criteria over the study period, just 12% were hypofractionated, reaching a percentage of 29% in 2015 (p < 0.001). Our analysis showed a narrowing age gap between patients receiving conventional fractionation and hypofractionation in centres leading adoption. However, there were important differences in clinicians' interpretation of evidence (e.g. regarding the perceived risk of long-term toxicity) and selection of patients for specific indications, both within and between departments. Conclusions: Differences observed in the rate of adoption of HWBRT could not be tackled only using a rational, evidence-based approach. Factors related to the management of radiotherapy departments play a major role in the diffusion of therapeutic strategies

ICO-ICS Praxis para el tratamiento médico y con irradiación del linfoma B difuso de célula grande

Tractament mèdic; Tractament amb irradiació; Limfoma B difús de cèl·lula granMedical treatment; Irradiation treatment; Diffuse large cell B lymphomaTratamiento médico; Tratamiento con irradiación; Linfoma B difuso de célula grandeEls limfomes no hodgkinians (LNH) són neoplàsies originades en cèl·lules limfoides en diferents estats maduratius, la qual cosa explica la gran heterogeneïtat biològica i clínica d’aquests tumors. Hi ha diversos sistemes de classificació, però el més utilitzat és la Classificació euroamericana revisada de limfomes de l'Organització Mundial de la Salut. El limfoma B difús de cèl·lula gran suposa aproximadament entre el 30-40% dels limfomes dels adults. Habitualment afecta adults amb una edat mitjana superior a 60 anys i el 60% dels pacients presenten els anomenats símptomes B (febre de 38 ºC o més, pèrdua de pes de més del 10% i/o sudoració nocturna. La majoria de casos són formes de novo però també poden ser deguts a la progressió o transformació d’una malaltia limfoproliferativa prèvia. Els objectius d'aquest document són: Desenvolupar, difondre, implementar i avaluar resultats de la ICO-ICSPraxi del limfoma B difús de cèl·lula gran. - Disminuir la variabilitat terapèutica entre els pacients tractats als diferents centres d'aquesta institució. - Implementar els resultats de la terapèutica en els pacients amb limfoma B difús de cèl·lula gran tractats d’acord amb les recomanacions d’aquesta guia

BMC Cancer

BACKGROUND: Although some countries have observed a stabilization in the incidence of CNS, an increasing incidence has been reported from multiple studies. Recent observations point out to the heterogeneity of incidence trends according to histological subtypes, gender and age-groups. Using a high-quality regional CNS tumor registry, this article describes the trends of CNS tumor incidence for main histological subtypes, including benign and malignant tumors, in the French department of Gironde from 2000 to 2012. METHODS: Crude and age-standardized incidence rates were calculated globally, by histological subtypes, malignant status, gender and age groups. For trends, annual percent changes (APC) were obtained from a piecewise log-linear model. RESULTS: A total of 3515 CNS tumors was registered during the period. The incidence of overall CNS tumors was 19/100000 person-years (8.3/100000 for neuroepithelial tumors and 7.3/100000 for meningeal tumors). An increased incidence of overall CNS tumors was observed from 2000 to 2012 (APC = + 2.7%; 95%-confidence interval (CI): 1.8-3.7). This trend was mainly explained by an increase in the incidence of meningiomas over the period (APC = + 5.4%, 95%-CI: 3.8-7.0). The increased incidence rate of CNS tumors was more pronounced in female and in older patients even though the incidence rate increased in all age groups. CONCLUSIONS: Part of the temporal variation may be attributed to improvement in registration, diagnosis and clinical practices but also to changes in potential risk factors. Thus, etiological studies on CNS tumors are needed to clarify this rising trend

Incidence and survival rates for adult malignant neuro-epithelial brain tumors in the Somme county (France): A retrospective, population-based study from 2003 to 2013

International audienceAims: To describe the incidence and survival rates for neuro-epithelial primary brain tumors (NPBTs) in adults in the Somme county between 2003 and 2013. Methods: By analyzing the Somme Cancer Registry, we calculated the age-standardized incidence rates (ASRs) for NPBTs. Independent effects of age, gender and period of diagnosis on the incidence were evaluated in a Poisson regression analysis. A Cox proportional hazards model was used to adjust the overall survival rates for age, gender, histologic group and period. Results: Of the 257 registered NPBTs, 193 (75.1%) were astrocytic tumors. The subpopulations most affected by NPBTs were men (incidence rate ratio (IRR) [95% confidence interval (CI)] females/males = 0.7 [0.55-0.90], p < 0.001) and the elderly (IRR [95% CI] = 1.02 [1.01-1.03] per year increment, p < 0.001). The ASR [95% CI] was 4.5 [3.9-5.1] cases per 100,000 person-years. The increase in incidence [95%CI] between 2003 and 2013 was estimated to be 7.6% [3.4-11.2%] per year (p < 0.001). Survival improved significantly between the 2003-2008 period and the 2009-2013 period (hazard ratio [95%CI] = 0.70 [0.50-0.96], p = 0.03). Conclusion: We observed an increase in the incidence of NPBTs and in survival rates between 2009 and 2013. These increases might have been due to broader, earlier access to diagnostic tools and/or improvements in treatment procedures

Late rectal and bladder toxicity following radiation therapy for prostate cancer: Predictive factors and treatment results

AimThis study aimed at investigating factors associated to late rectal and bladder toxicity following radiation therapy and the effectiveness of Hyperbaric Oxygen Therapy (HBOT) when toxicity is grade ≥2.BackgroundRadiation is frequently used for prostate cancer, but a 5–20% incidence of late radiation proctitis and cystitis exists. Some clinical and dosimetric factors have been defined without a full agreement. For patients diagnosed of late chronic proctitis and/or cystitis grade ≥2 treatment is not well defined. Hyperbaric Oxygen Therapy (HBOT) has been used, but its effectiveness is not well known.Materials and methods257 patients were treated with radiation therapy for prostate cancer. Clinical, pharmacological and dosimetric parameters were collected. Patients having a grade ≥2 toxicity were treated with HBOT. Results of the intervention were measured by monitoring toxicity by Common Toxicity Criteria v3 (CTCv3).ResultsLate rectal toxicity was related to the volume irradiated, i.e. V50[[ce:hsp sp="0.25"/]]>[[ce:hsp sp="0.25"/]]53.64 (p[[ce:hsp sp="0.25"/]]=[[ce:hsp sp="0.25"/]]0.013); V60[[ce:hsp sp="0.25"/]]>[[ce:hsp sp="0.25"/]]38.59% (p[[ce:hsp sp="0.25"/]]=[[ce:hsp sp="0.25"/]]0.005); V65[[ce:hsp sp="0.25"/]]>[[ce:hsp sp="0.25"/]]31.09% (p[[ce:hsp sp="0.25"/]]=[[ce:hsp sp="0.25"/]]0.002) and V70[[ce:hsp sp="0.25"/]]>[[ce:hsp sp="0.25"/]]22.81% (p[[ce:hsp sp="0.25"/]]=[[ce:hsp sp="0.25"/]]0.012). We could not correlate the volume for bladder. A total of 24 (9.3%) patients experienced a grade ≥2. Only the use of dicumarinic treatment was significant for late rectal toxicity (p[[ce:hsp sp="0.25"/]]=[[ce:hsp sp="0.25"/]]0.014). A total of 14 patients needed HBOT. Final percentage of patients with a persistent toxicity grade ≥2 was 4.5%.ConclusionRectal volume irradiated and dicumarinic treatment were associated to late rectal/bladder toxicity. When toxicity grade ≥2 is diagnosed, HBOT significantly ameliorate symptoms