462 resultados para PSA BOUNCE


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The Spearhead Intervention Tool has been commissioned by the Department of Health through the Association of Public Health Observatories (APHO). This version of the tool has been updated with latest data for 2005-07. The tool is designed to assist commissioners in Spearhead Primary Care Trusts (PCTs) with their Local Delivery Planning (LDP) and commissioning and to assist Spearhead Local Authorities (LAs) with the delivery of Local Area Agreements (LAAs). It highlights key issues for Spearhead PCTs and LAs to consider in order to achieve the life expectancy element of the Government۪s Public Service Agreement (PSA) on health inequalities by 2010.

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The 2008 annual update on infant mortality rates to monitor progress against the Department of Health infant mortality inequality PSA target.

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This Health Inequalities Intervention Toolkit, developed jointly by the Association of Public Health Observatories and the Department of Health, focuses on improving life expectancy and infant mortality rates, especially in disadvantaged areas. Based on local authority boundaries, it is designed to assist evidence-based local service planning and commissioning, including Joint Strategic Needs Assessments. The Toolkit does this by providing information on the diseases, which are causing low life expectancy in individual areas, enabling good local priority setting. The Toolkit was originally designed to support achievement of the national Public Service Agreement target to: "Reduce health inequalities by 10% by 2010 as measured by infant mortality and life expectancy at birth." Although the PSA target has now ended, the Toolkit should still be useful to the NHS and local government, supporting planning to narrow inequalities in life expectancy and infant mortality

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The Department of Health Health Inequalities page contains DH documents and information as they relate to health inequalities. These include PSA targets, wider social determinants, guidance, and other publications and links.

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The publication shows how to narrow the health inequalities gap in infant mortality by looking at current examples of best practice.

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The Health Inequalities Intervention Tool has been commissioned by the Department of Health through the Association of Public Health Observatories (APHO). The tool is designed to assist commissioners in Spearhead Primary Care Trusts (PCTs) with their Local Delivery Planning (LDP) and commissioning and to assist Spearhead Local Authorities (LAs) with the delivery of Local Area Agreements (LAAs). It highlights key issues for Spearhead PCTs and LAs to consider in order to achieve the life expectancy element of the Government's Public Service Agreement (PSA) on health inequalities by 2010

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PURPOSE: The EGF receptor (EGFR) is overexpressed in the majority of metastatic castration-resistant prostate cancers (mCRPC) and might represent a valid therapeutic target. The combination of docetaxel and cetuximab, the monoclonal antibody against EGFR, has not been tested in patients with prostate cancer. EXPERIMENTAL DESIGN: Patients with mCRPC progressing during or within 90 days after at least 12 weeks of docetaxel were included in this phase II trial. Treatment consisted of docetaxel (75 mg/m(2) every 3 weeks or 35 mg/m(2) on days 1, 8, 15 every 4 weeks) in combination with cetuximab (400 mg/m(2) on day 1 and then 250 mg/m(2) weekly). The primary endpoint was progression-free survival (PFS) at 12 weeks defined as the absence of prostate-specific antigen (PSA), radiographic, or clinical progression. Evaluation of known biomarkers of response and resistance to cetuximab (EGFR, PTEN, amphiregulin, epiregulin) was conducted. RESULTS: Thirty-eight patients were enrolled at 15 Swiss centers. Median age was 68 years and median PSA was 212 ng/mL. PFS at 12 weeks was 34% [95% confidence interval (CI), 19%-52%], PFS at 24 weeks was 20%, and median overall survival (OS) was 13.3 months (95% CI, 7.3-15.4). Seven patients (20%) had a confirmed ≥ 50% and 11 patients (31%) a confirmed ≥ 30% PSA decline. About 47% of enrolled patients experienced grade 3 and 8% grade 4 toxicities. A significantly improved PFS was found in patients with overexpression of EGFR and persistent activity of PTEN. CONCLUSIONS: EGFR inhibition with cetuximab might improve the outcome of patients with mCRPC. A potential correlation between EGFR overexpression, persistent expression of PTEN, and EGFR inhibition should be investigated further.

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BACKGROUND It is known that mitochondria play an important role in certain cancers (prostate, renal, breast, or colorectal) and coronary disease. These organelles play an essential role in apoptosis and the production of reactive oxygen species; in addition, mtDNA also reveals the history of populations and ancient human migration. All these events and variations in the mitochondrial genome are thought to cause some cancers, including prostate cancer, and also help us to group individuals into common origin groups. The aim of the present study is to analyze the different haplogroups and variations in the sequence in the mitochondrial genome of a southern European population consisting of subjects affected (n = 239) and non-affected (n = 150) by sporadic prostate cancer. METHODOLOGY AND PRINCIPAL FINDINGS Using primer extension analysis and DNA sequencing, we identified the nine major European haplogroups and CR polymorphisms. The frequencies of the haplogroups did not differ between patients and control cohorts, whereas the CR polymorphism T16356C was significantly higher in patients with PC compared to the controls (p = 0.029). PSA, staging, and Gleason score were associated with none of the nine major European haplogroups. The CR polymorphisms G16129A (p = 0.007) and T16224C (p = 0.022) were significantly associated with Gleason score, whereas T16311C (p = 0.046) was linked with T-stage. CONCLUSIONS AND SIGNIFICANCE Our results do not suggest that mtDNA haplogroups could be involved in sporadic prostate cancer etiology and pathogenesis as previous studies performed in middle Europe population. Although some significant associations have been obtained in studying CR polymorphisms, further studies should be performed to validate these results.

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Although a metastatic presentation of an occult prostatic adenocarcinoma is not uncommon, the majority of these patients present with bone metastasis affecting the axial skeleton. Cranial metastases to the paranasal sinuses are extremely rare. A 56-year-old man presented with loss of vision and numbness of the right side of the face. Computed tomography (CT) scan and cranial magnetic resonance imaging (MRI) revealed a mass invading the sphenoid sinus. The patient underwent surgery to remove the lesion, and the histopathological examination suggested metastasis of an adenocarcinoma, with positive staining to prostatic specific antigen (PSA). However, serum PSA was 4 ng/mL, and the patient did not report any lower urinary tract symptoms or bone pain. Transrectal ultrasound-guided biopsy revealed prostatic adenocarcinomas with a Gleason score of 8 [4 + 4]. The subsequent treatment consisted of radiotherapy and androgen deprivation, followed by first- and second-line chemotherapy (docetaxel and cabazitaxel) when the disease progressed. The patient achieved a good response with the last cycle of cabazitaxel and after a 5-year followup is currently alive. Cranial metastases of prostate adenocarcinoma are rare, and there is currently no standard treatment for these patients. Whenever possible, surgery combined with radiotherapy and hormonotherapy is the recommended option.

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RESUME DESTINE A UN LARGE PUBLIC En biologie, si une découverte permet de répondre à quelques questions, en général elle en engendre beaucoup d'autres. C'est ce qui s'est produit récemment dans le monde des kallicréines. De la famille des protéases, protéines ayant la faculté de couper plus ou moins spécifiquement d'autres protéines pour exercer un rôle biologique, la famille des kallicréines humaines n'était composée que de 3 membres lors du siècle dernier. Parmi eux, une kallicréine mondialement utilisée pour détecter le cancer de la prostate, le PSA. En 2000, un chercheur de l'hôpital universitaire Mont Sinaï à Toronto, le Professeur Eleftherios Diamandis, a découvert la présence de 12 nouveaux gènes appartenant à cette famille, situés sur le même chromosome que les 3 premières kallicréines. Cette découverte majeure a placé les spécialistes des kallicréines face à une montagne d'interrogations car les fonctions de ces nouvelles protéases étaient totalement inconnues. La kallicréine humaine 14 (hK14) présente un intérêt particulier, car elle se retrouve associée à différents cancers, notamment les carcinomes ovariens et mammaires. Cette association ne répond cependant pas à la fonction de cette protéase. L'objectif de ce travail de thèse était donc de découvrir, dans un premier temps, la spécificité de cette nouvelle kallicréine, c'est-à-dire le type de coupure qu'elle engendre au niveau des protéines qu'elle cible. Utilisant une technologie de pointe qui exploite la propriété des bactériophages à se répliquer dans les bactéries à l'infini, des dizaines de millions de combinaisons protéiques aléatoires ont été présentées à hK14, qui a pu sélectionner celles qui lui étaient favorables pour la coupure. Cette technique qualitative porte le nom de Phage Display Substrate. Une fois la sélection réalisée, il fallait transférer ces séquences coupées ou substrats dans un système permettant de donner une valeur quantitative à l'efficacité de coupure. Pour cela nous avons développé une technologie qui permet d'évaluer cette efficacité en utilisant des protéines fluorescentes de méduse, modifiées génétiquement, dont l'excitation de la première (CFP : cyan fluorescent protein) par la lumière à une certaine longue d'onde permet le transfert d'énergie à la seconde (YFP : yellow fluorescent protein), via un substrat qui les lie. Pour que ce transfert d'énergie se produise, il faut que les deux protéines fluorescentes soient proches, comme c'est le cas lorsqu'elles sont liées par un substrat. La coupure de ce lien provoque un changement de transfert d'énergie qui est quantifiable en utilisant un spectrofluoromètre. Cette technologie permet donc de suivre la réaction d'hydrolyse (coupure) des protéases. Afin de poursuivre certaines expériences permettant de mieux comprendre la fonction biologique d'hK14 ainsi que son éventuelle implication dans le cancer, nous avons développé des inhibiteurs spécifiques d'hK14. Les séquences qui on été le plus efficacement coupées par hK14 ont été utilisées pour transformer deux types d'inhibiteurs classiques, qui circulent dans notre sang, en inhibiteurs d'hK14 hautement efficaces et spécifiques. Selon les résultats obtenus in vitro, ils pourront être évalués in vivo en tant que traitement potentiel contre le cancer. RESUME Les protéases sont des enzymes impliquées dans des processus physiologiques mais aussi parfois pathologiques. La famille des kallicréines tissulaires humaines représente le plus grand groupe de protéases humaines, dont plusieurs pourraient participer au développement de certaines maladies. D'autre part, ces protéases sont apparues comme des marqueurs de pathogénicité potentiels, notamment dans les cas de cancers hormono-dépendants. La kallicréine humaine 14 a été récemment découverte et son implication dans quelques maladies, particulièrement dans le cas de tumeurs, semble probable. En effet, son expression génique est augmentée au niveau des tissus cancéreux de la prostate et du sein et son expression protéique s'est révélée plus élevée dans le sérum de patientes atteintes d'un cancer du sein ou des ovaires. Cependant, comme c'est le cas pour la plupart des kallicréines, sa fonction est encore inconnue. Afin de mieux connaître son rôle biologique et/ou pathologique, nous avons décidé de caractériser son activité enzymatique. Nous avons tout d'abord mis au point un système de substrats entièrement biologique permettant d'étudier in vitro l'activité des protéases. Ce système est basé sur le phénomène de FRET, à savoir le transfert d'énergie de résonance fluorescente qui intervient entre deux molécules fluorescentes voisines si le spectre d'émission de la protéine donneuse chevauche le spectre d'excitation de la protéine receveuse. Nous avons fusionné de manière covalente une protéine fluorescente bleue (CFP) et une jaune (YFP) en les liant avec diverses séquences. Par clivage de la séquence de liaison, une perte du transfert d'énergie peut être mesurée par un spectrofluoromètre. Cette technologie représente un moyen facile de suivre la réaction d'hydrolyse des protéases. Les conditions optimales de production de ces substrats CFP-YFP ont été déterminées, de même que les paramètres pouvant éventuellement influencer le FRET. Ce système possède une grande résistance à la protéolyse non spécifique et est applicable à un grand nombre de protéase. Contrairement aux substrats fluorogéniques, il permet d'étudier les acides aminés se trouvant des deux côtés du site de clivage. Ce système étant entièrement biologique, il est le reflet des interactions protéine-protéine et représente un outil biologique facile, bon marché et rapide pour caractériser les protéases. Dans un premier temps, hK14 a été mise en présence d' une banque de haute diversité de pentapeptides aléatoires présentée à la surface de phages afin d'identifier des substrats spécifiques. Ensuite, le système CFP-YFP a été employé pour trier les peptides sélectionnés afin d'identifier les séquences de substrats les plus sensibles et spécifiques pour hK14. Nous avons montré, qu'en plus de sa prévisible activité de type trypsine, hK14 possède aussi une très surprenante activité de type chymotrypsine. Les séquences les plus sensibles ont été choisies pour cribler la banque de donnée Swissprot, permettant ainsi l'identification de 6 substrats protéiques humains potentiels pour hK14. Trois d'entre eux, la laminine α-5, le collagène IV et la matriline-4, qui sont des composants de la matrice extracellulaire, ont démontré une grande susceptibilité à l'hydrolyse par hK14. De plus, la séparation éléctrophorétique a montré que la dégradation de la laminine α-5 et de la matriline-4 par hK14 devait se produire aux sites identifiés par la technologie du phage display. Pour terminer, nous avons transformé, par mutagenèse dirigée, deux serpines (inhibiteurs de protéases de type sérine) connues, AAT et ACT (alpha anti-trypsine et alpha anti-chymotrypsine), qui inhibent un vaste éventail d'enzymes humaines en inhibiteurs d'hK14 hautement efficaces et spécifiques. Ces inhibiteurs pourront être utilisés d'une part pour poursuivre certaines expériences permettant de mieux comprendre l'implication d'hK14 dans des voies physiologiques ou dans le cancer et d'autre part pour les évaluer in vivo en tant que traitement potentiel contre le cancer. SUMMARY Proteases consist of enzymes involved in physiological events, but also, in case of dysregulation, in pathogenicity. The human tissue kallikrein family represents the largest human protease cluster and includes several members that either could participate in the course of certain diseases or emerged as potential biological markers, especially in hormone dependent cancers. The human kallikrein 14 has been recently discovered and suggested implications in some disorders, particularly in tumors since its gene expression is up-regulated in prostate and breast cancer tissues and its protein expression increased in the serum of patients with breast and ovarian cancers. However, like most kallikreins, its function remains unknown. To better understand hK14 biological and/or pathological role, we decided to characterize its enzymatic activity. First of all, we developped a biological system suitable for in vitro study of protease activity. This system is based on the so-called FRET phenomenon, that is the Fluorescence Resonance Energy Transfer that occurs between two nearby fluorescent proteins if the emission spectrum of the donor overlaps the excitation spectrum of the acceptor. We fused covalently a cyan fluorescent protein (CFP) and a yellow fluorescent protein (YFP) with diverses sequences. Upon cleavage of the linker sequence by protease, the loss of energy transfer can be measured by a spectrofluorometer allowing an easy following of hydrolysis reaction. The optimal conditions to produce in bacterial system these CFP-YFP substrates were determined as well as the parameters that could eventually influence the FRET. This system demonstrated a high degree of resistance to non-specific proteolysis and applicability to various conditions corresponding to a great number of existing proteases. Other avantages are the possibility to study the amino acids located both sides of the cleavage site as well as the interest to work in a full biological system reflecting protein-protein interaction. A phage substrate library with exhaustive diversity was used prior to CFP-substrate-YFP system to isolate specific human kallikrein 14 substrates. After that the CFP-YFP system was used to sort peptides and identify highly sensitive and specific substrate sequences for hK14. We showed that besides its predictable trypsin-like activity, hK14 also possesses a surprising chymotrypsin-like activity. The screening of the Swissprot database was achieved with the most sensitive sequences and allowed the identification of 6 potential human protein substrates for hK14. Three of them, laminin α-5, collagen IV and matrilin-4, which are components of the extracellular matrix were incubated with hK14, by which they were efficiently hydrolyzed. Moreover, electrophoretic separation revealed that degradation of laminin α-5 and matrilin-4 by hK14 generated fragments with identical molecular size than the predicted N-terminal fragments that would result from hK14 specific cleavage, proving the value of phage display substrate to identify potential substrates. Finally, with site-directed mutagenesis, we transformed two well-known serpins (serine protease inhibitors), AAT and ACT (alpha anti-trypsin and alpha anti-chymotrypsin), which inhibit a vast spectrum of human enzymes into highly efficient and specific hK14 inhibitors. These inhibitors will be used to pursue experiments that could help understand hK14 implication in physiological pathways as well as in cancer biology and also to perform their in vivo evalution as potential cancer treatment.

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OBJETIVO: Identificar factores predictivos de afectación unilateral en el cáncer de próstata (CaP) de bajo riesgo. MATERIAL Y METODOS: 95 pacientes con CaP de bajo riesgo. Evaluamos la presencia de CaP unilateral en la pieza de prostatectomía. Se realizó análisis uni y multivariante estudiando las variables: edad, PSA, volumen prostático, porcentaje de cilindros afectos y presencia de biopsias previas. RESULTADOS: el 36% presentaron CaP unilateral en la pieza. No se han encontrado diferencias significativas entre el grupo de pacientes con CaP unilateral y el bilateral. CONCLUSION: No hemos identificado ningún factor predictivo de CaP unilateral en pacientes de bajo riesgo.

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In the histomorphological grading of prostate carcinoma, pathologists have regularly assigned comparable scores for the architectural Gleason and the now-obsolete nuclear World Health Organization (WHO) grading systems. Although both systems demonstrate good correspondence between grade and survival, they are based on fundamentally different biological criteria. We tested the hypothesis that this apparent concurrence between the two grading systems originates from an interpretation bias in the minds of diagnostic pathologists, rather than reflecting a biological reality. Three pathologists graded 178 prostatectomy specimens, assigning Gleason and WHO scores on glass slides and on digital images of nuclei isolated out of their architectural context. The results were analysed with respect to interdependencies among the grading systems, to tumour recurrence (PSA relapse > 0.1 ng/ml at 48 months) and robust nuclear morphometry, as assessed by computer-assisted image analysis. WHO and Gleason grades were strongly correlated (r = 0.82) and demonstrated identical prognostic power. However, WHO grades correlated poorly with nuclear morphology (r = 0.19). Grading of nuclei isolated out of their architectural context significantly improved accuracy for nuclear morphology (r = 0.55), but the prognostic power was virtually lost. In conclusion, the architectural organization of a tumour, which the pathologist cannot avoid noticing during initial slide viewing at low magnification, unwittingly influences the subsequent nuclear grade assignment. In our study, the prognostic power of the WHO grading system was dependent on visual assessment of tumour growth pattern. We demonstrate for the first time the influence a cognitive bias can have in the generation of an error in diagnostic pathology and highlight a considerable problem in histopathological tumour grading.

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Several studies point to the increased risk of reactivation of latent tuberculosis infection (LTBI) in patients with chronic inflammatory arthritis (CIAs) after using tumour necrosis factor (TNF)a blockers. To study the incidence of active mycobacterial infections (aMI) in patients starting TNFa blockers, 262 patients were included in this study: 109 with rheumatoid arthritis (RA), 93 with ankylosing spondylitis (AS), 44 with juvenile idiopathic arthritis (JIA) and 16 with psoriatic arthritis (PsA). All patients had indication for anti-TNFa therapy. Epidemiologic and clinical data were evaluated and a simple X-ray and tuberculin skin test (TST) were performed. The control group included 215 healthy individuals. The follow-up was 48 months to identify cases of aMI. TST positivity was higher in patients with AS (37.6%) than in RA (12.8%), PsA (18.8%) and JIA (6.8%) (p < 0.001). In the control group, TST positivity was 32.7%. Nine (3.43%) patients were diagnosed with aMI. The overall incidence rate of aMI was 86.93/100,000 person-years [95% confidence interval (CI) 23.6-217.9] for patients and 35.79/100,000 person-years (95% CI 12.4-69.6) for control group (p < 0.001). All patients who developed aMI had no evidence of LTBI at the baseline evaluation. Patients with CIA starting TNFa blockers and no evidence of LTBI at baseline, particularly with nonreactive TST, may have higher risk of aMI.

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BACKGROUND Little is known about the healthcare process for patients with prostate cancer, mainly because hospital-based data are not routinely published. The main objective of this study was to determine the clinical characteristics of prostate cancer patients, the, diagnostic process and the factors that might influence intervals from consultation to diagnosis and from diagnosis to treatment. METHODS We conducted a multicentre, cohort study in seven hospitals in Spain. Patients' characteristics and diagnostic and therapeutic variables were obtained from hospital records and patients' structured interviews from October 2010 to September 2011. We used a multilevel logistic regression model to examine the association between patient care intervals and various variables influencing these intervals (age, BMI, educational level, ECOG, first specialist consultation, tumour stage, PSA, Gleason score, and presence of symptoms) and calculated the odds ratio (OR) and the interquartile range (IQR). To estimate the random inter-hospital variability, we used the median odds ratio (MOR). RESULTS 470 patients with prostate cancer were included. Mean age was 67.8 (SD: 7.6) years and 75.4 % were physically active. Tumour size was classified as T1 in 41.0 % and as T2 in 40 % of patients, their median Gleason score was 6.0 (IQR:1.0), and 36.1 % had low risk cancer according to the D'Amico classification. The median interval between first consultation and diagnosis was 89 days (IQR:123.5) with no statistically significant variability between centres. Presence of symptoms was associated with a significantly longer interval between first consultation and diagnosis than no symptoms (OR:1.93, 95%CI 1.29-2.89). The median time between diagnosis and first treatment (therapeutic interval) was 75.0 days (IQR:78.0) and significant variability between centres was found (MOR:2.16, 95%CI 1.45-4.87). This interval was shorter in patients with a high PSA value (p = 0.012) and a high Gleason score (p = 0.026). CONCLUSIONS Most incident prostate cancer patients in Spain are diagnosed at an early stage of an adenocarcinoma. The period to complete the diagnostic process is approximately three months whereas the therapeutic intervals vary among centres and are shorter for patients with a worse prognosis. The presence of prostatic symptoms, PSA level, and Gleason score influence all the clinical intervals differently.

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Purpose: Pelvic radiation therapy (RT) represents a therapeutic option in the treatment of node-positive prostate cancer but it remains controversial, because of its high rate toxicities. New radiation technique such as IMRT may reduce these complications. In this study, we aimed to assess the rate of toxicities according to CTC-NCI.v3 in such patients treated with either 3DCRT or IMRT (Tomotherapy).Methods and Materials: From January 2008 to December 2010, data were analyzed from 30 consecutive patients including 29 node-positive prostate cancer undergoing definitive or adjuvant RT (IMRT and/or 3DCRT) after radical prostatectomy and lymphadenectomy combined to hormonal therapy. Median age was 66 years (range : 52-83). Median preoperative PSA value was 12 ng/ml (range: 2.72-165). According to the pT-classification, there were 4 pT2, 7 pT3a, 10 pT3b, and 1 pT4 patients. Pathologic positive lymph nodes were found in 23 patients. Radiologic positive lymph nodes were found in 5 patients. Two patients were node negative. Gleason score was ranging between 7 to 10. Twelve patients were treated by Tomotherapy including 4 with simultaneous integrated boost (SIB). Eighteen patients were treated by Tomotherapy including 2 with SIB to the whole pelvis and 3DCRT boost to the prostate. V50% for bladder and rectum were recorded. Acute and late toxicities were assessed according to CTC-NCI.v3 classification.Results: With a median follow-up of 17 months, only one patient presented nodal and metastatic failure. Urinary incontinence was graded 1 after surgery for 6 patients and grade 2 in two. Sexual impuissance was noted in 3 patients. Acute toxicities during RT were proctitis grade 0 in 23 patients (76.5%), grade 1 in 7 (23.5%). Nocturia grade 1 in 9 patients. Interruption of treatment was seen in only case because of grade 3 urinary incontinence. Late effects included erectile dysfunction in 5 patients (83%) and one patient had grade 3proctitis requiring colostomy 3 months after RT. Median Dose-Volume Histogram according to radiation techniques V50% bladder V50% rectum Tomotherapy (IMRT) 36.25 Gy 39 Gy Tomotherapy + 3DCRT 41.26 Gy 39.18 GyConclusion: Based on our above-mentioned findings, there is no a significant difference in morbidity in patients treated with Tomotherapy or Tomotherapy with 3DCRT boost.