Completion time in prostate cancer treated with proton beam therapy: Do interruptions matter?

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e17553-e17553
Author(s):  
Shaakir Hasan ◽  
Lane Rosen ◽  
Henry Tsai ◽  
Christopher Sinesi ◽  
George E Laramore ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
High Risk ◽  
Completion Time ◽  
Characteristic Curve ◽  
Proton Beam Therapy ◽  
Collaborative Group ◽  
Kaplan Meier ◽  
Treatment Interruptions ◽  
Risk Patients ◽  
Prostate Cancers

e17553 Background: The association between completion time of proton therapy(PT) in prostate cancer and biochemical control is unknown. Methods: We queried the multi-institutional, prospectively collected, proton collaborative group registry for prostate cases treated definitively with PT. Kaplan meier methodology was used for biochemical failure free (bFF) rates and multivariable regression analyses (MVA) were used to identify correlates of treatment interruptions (TI) and bF. Results: After exclusion, 2794 men with 693 low, 869 favorable intermediate, 627 unfavorable intermediate, and 605 high risk prostate cancers had available data. The median age was 68 years(40-92), 90% were white and 8% were black. Androgen deprivation therapy (ADT) was given to 676 patients, 312 treatments were hypofractionated, and median EQD2 dose = 75(74-86) GyE1.5. Kaplan-meier median follow-up was 79 months. In total 900 patients (32%) had at least one TI. Shorter treatments (HR = 0.95 per day, P < 0.01) and high risk (HR = 0.72, P < 0.04) cases were less likely to have Tis on MVA. There was no difference in 5-year bFF rate with (92.7) and without (93.1%) TIs. In a subset of only high risk patients treated with ADT (n = 385), the 5-year bFF was 83% without TIs and 75% with TIs (HR = 2.10, P = 0.06). This discrepancy was significant with multivariable binomial regression (HR = 2.36, P = 0.03), and the bF difference was greatest when > 5 treatment days were missed per receiver operating characteristic curve. Conclusions: Largely, there was no correlation between TIs and bF in prostate cancer treated with PT, however completion time may play a more significant role in high risk disease.

End-of-radiation PSA as a novel prognostic factor in patients undergoing definitive radiation for prostate cancer.

2015 ◽  
Vol 33 (7_suppl) ◽  
pp. 68-68 ◽  
Author(s):  
Phuoc T. Tran ◽  
Amol Narang ◽  
Ashwin Ram ◽  
Scott P. Robertson ◽  
Pei He ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Multivariate Analysis ◽  
High Risk ◽  
Low Risk ◽  
Risk Level ◽  
Treatment Intensification ◽  
Entire Cohort ◽  
Kaplan Meier ◽  
Risk Patients ◽  
Poor Outcomes

68 Background: In patients with localized prostate cancer undergoing radiation therapy (RT) +/- androgen deprivation therapy (ADT), an end of radiation (EOR) PSA obtained during the last week of RT may serve as an early post-treatment predictor of poor outcomes and identify patients in whom to pursue treatment intensification or novel therapies. Methods: We reviewed an IRB-monitored, prospectively acquired database of patients with prostate cancer treated with definitive RT at our institution from 1993-2007 (n=890). Patients with an available EOR PSA were divided into two cohorts and analyzed separately based on inclusion of ADT into the treatment regimen. EOR PSA thresholds of 0.5 ng/mL and 1.0 ng/mL were explored. Multivariate analysis was performed to determine prognostic factors for biochemical failure-free survival (BFFS, Phoenix criteria) and overall survival (OS). Kaplan-Meier survival curves were constructed, with stratification by EOR PSA thresholds. Results: Median age was 69 years, with an even distribution of NCCN low risk (33.5%), intermediate risk (34.0%), and high risk (32.5%) patients. Median RT dose was 7020 cGy, and 54.5% were treated with ADT. Median follow-up of the entire cohort was 11.7 yrs. EOR PSA level was available for the majority of patients (77.5%). On multivariate analysis, EOR PSA >0.5 ng/mL was significantly associated with worse BFFS (p<0.0001) and OS (p<0.0001). In the subset of patients undergoing RT with ADT for NCCN intermediate/high risk disease, 5 yr BFFS was more disparate based an EOR PSA threshold of 0.5 ng/mL (5 yr BFFS: 87.3% vs. 41.1%, p<0.001), than initial NCCN risk level (5 yr BFFS: 88.7% vs. 76.9%, p=0.038). In NCCN low risk patients undergoing definitive RT alone, an EOR PSA threshold of 1.0 ng/mL was significantly prognostic of outcome (5 yr BFFS: 100.0% vs. 88.6%, p=0.024). Conclusions: For NCCN intermediate/high risk patients undergoing RT with ADT, EOR PSA >0.5 ng/mL may represent a better surrogate for poor outcomes than initial risk group. In addition, NCCN low risk patients undergoing RT alone who obtained an EOR PSA ≤1.0 ng/mL experienced excellent BFFS. Prospective evaluation of the utility of EOR PSA should be explored.

Blood tests to predict one- to two-year survival of patients with difficult cancers.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e16158-e16158
Author(s):  
Robert L. De Jager ◽  
Howard Bruckner ◽  
Fred Bassali ◽  
Elisheva Dusowitz ◽  
AJ Book ◽  
...  
Keyword(s):  
High Risk ◽  
Hospice Care ◽  
Intrahepatic Bile Duct ◽  
Stage Iv ◽  
Neutrophil Lymphocyte Ratio ◽  
Blood Tests ◽  
Kaplan Meier ◽  
Risk Patients ◽  
Intent To Treat ◽  
Treat Analysis

e16158 Background: A sequence of drug combinations produces > 1 median (M) -strong 2-year (yr) survival (S) (Bruckner et al AACR 14 Antica Res (ACR) 16, 18 SIGO 19). Trials included high-risk patients (pts). Each initial series has 5-yr Ss, after pts were referred for hospice care. Prognostic ALAN blood tests (Ts) have been validated for stage IV (Adv) Cholangiocarcinoma (CCA) (Salati et al EuJCa18). Other Ts predict unexpected favorable (F) S of pts with gastric ca, PS 2-3. Bruckner et al JAMA, 82); but, there is little known about Ts for resistant (R) Ca. Methods: Planned Kaplan-Meier intent to treat analysis to find Ts that: expand eligibility (El) for therapy; identify biomarkers that predict therapy can prolong S and identify new hypotheses for therapy. El pts have:R to test drugs, Pancreatic (PC), Intrahepatic bile duct, CCA, Colon, CRC and new (N) APC. All series: -/+ high risk, -/+ aged, PS 0-2. El: Helsinki criteria- consent, recovered from severe (gr3) toxicity; able to reach office, -/+ help, and S > 6 wks. Inel: CNS involved, IV needed, F clinical factors predict 1 yr MST. Ts include A.L.A.N. scores, (AS) (Salati ibid) and other blood Ts (ACR ibid, Lavin et al CTR 82) Therapy GFLIO in mg/M2: gemcitabine 500, leucovorin 180, fluorouracil 1200, 24 hr infusion. Irinotecan 80 D2 Oxaliplatin 40. Then for progression (pg), add docetaxel 20-25, except CRC mitomycin C 4-6; next pg add cetuximab, except APC or KRAS-M, weekly, and next pg replace cetuximab with bevacizumab 10mg/kg ibid ACR 16. Results: At all ages, overall (O) S is > 1 yr for RCRC, and NAPC and sets with any 1 F or UnF T other than < 3.1 Albumin (Alb) or < 2.1 lymph/monocyte ratio (LMR) b For CCA, 17R/16N, OMS > 2 yrs 66% of pts and ≥ 2 yrs for all test sets except UnF, 26% of pts, MS 17 mos, with low Alb. For CRC: 50R OMS is 16.5 mos; 42% S 2 yrs, Fav Ts: MS > ̃ 2yrs, 39-82% of pts have FTs; Neutrophil Lymphocyte Ratio (NLR); < 3.1, 61% S 2 yrs, p < .02; Lymphs > 1.5, 53% S 2 yrs, p < .02; AS 0; 59% S 2 yrs, p < .06; Platelets < 300,000, 54% S 2 yrs, p < .06; Alb: ≥ 3.5, 48% S 2 yrs, p < .11. For N-APC: 53 pts, OS is 14.5 mos and > 12 mos in sets with any 1 UnF T other than Alb or LMR. FTs: MST 16.4-18 mos. 34-77% of pts have FTs; Alb ≥ 3.5, 34% S 2 yrs, p < 0.001; WBC < 10, 29% S 2 yrs, p < .06; AS 0-2, 35% S 2 yrs, p 2.7E-7. For R-PC: 53 pts, OS is 12 mos for 44% of pts, FTs: MST 13.6-17 mos, 21-70% of pts have FTs: Alb ≥ 3.5 30% S 2 yrs, p .0004; AS: 0, 41% S 2 yrs, p .0006; NLR < 3, 37% S 2 yrs, p < .02. GFLIO’s < 5% gr3 induction toxicity, is reversible, with no hospitalization, neutropenic fever or gr3 neuropathy. Conclusions: Robust Ts identify many difficult pts with median > 1 and testable prospective > 2 yr rates of S. Ts warrant development: validation with GFLIO and other therapy and other cancers; to improve Ts, models for eligibility and geriatric criteria; to identify false -/+ trials; and personalize trials to correct UnF Ts. FTs, with GFLIO, can change prognosis and practice for > 50% of pts now advised “against” any therapy due to a clinical estimate of “less than 6 -10 mos to live.” Clinical trial information: NCT01905150.

Prostate Cancer Diagnosis in High Risk Patients – The Finasteride Challenge Trial

2008 ◽  
Vol 01 (03) ◽  
Author(s):  
Bernd J Schmitz-Dräger ◽  
Arndt Hartmann ◽  
Gert Hüsgens ◽  
Jack Groskopf ◽  
Jochen Gleissner ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
High Risk ◽  
Cancer Diagnosis ◽  
Prostate Cancer Diagnosis ◽  
High Risk Patients ◽  
Risk Patients

scholarly journals Salvage robot-assisted radical prostatectomy (sRARP) for radiation resistant prostate cancer in a group of initially high risk patients

2017 ◽  
Vol 1 (1) ◽  
pp. 21-27
Author(s):  
Nirmal Lamichhane ◽  
Adam S. Dowrick ◽  
Ulrika Axcrona ◽  
Bjørn Brennhovd ◽  
Sophie D. Fosså ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
High Risk ◽  
Radical Prostatectomy ◽  
High Frequency ◽  
Salvage Treatment ◽  
Rectal Injury ◽  
Robot Assisted ◽  
Radiation Resistant ◽  
Risk Patients

Introduction: Salvage robot-assisted radical prostatectomy (sRARP) is seen as an attractive option for salvage treatment of radiation therapy -recurrent prostate cancer (PC), thanks in part to the good visualisation that is possible using this modality. However, the results of fewer than 200 salvage sRARPs have been published in the literature. We report the outcomes in a cohort of initially high risk patients of robot-assisted radical prostatectomy as salvage local therapy for radiation-resistant PC in a Scandinavian healthcare setting. Materials and methods: A retrospective review of the charts of all patients who underwent sRARP for biochemical failure (BCF) after primary radiation treatment for localised PC at a single institution was performed. Results: Twenty-two patients, median age 67 years (range 57 to 72), had sRARP performed between June 2008 to July 2013. A median follow-up of 26 months (range 2 to 63) was observed. Perioperative complications occurred in 4 patients (18%), with one patient sustaining a rectal injury. Histo-pathological diagnosis was pT2 in three, pT3a in five, pT3b in twelve and pTx in one patient. Ten patients (45%) had a positive surgical margin (PSM). At follow-up, 54 % of patients were free of biochemical progression and 41% were continent. Conclusions: We showed that salvage RARP is technically feasible in a cohourt of patients with predominantly high risk disease. This study adds to the limited data already in the literature, demonstrating the high frequency of locally advanced (pT3b) PC, a patient group that is usually not included in salvage treatments, as e.g. high frequency ultrasound or salvage brachytherapy. Further, given that the historical barriers to salvage RP with higher rates of rectal injury and poor urinary control no longer seem to be applicable in the modern era, we think that more patients should be considered candidates for this potentially curative salvage treatment of radiation-resistant PC. However, long-term follow-up is needed to confirm if the additional burden on these patients confers to oncological control following the procedure.

Dosimetric evaluation of whole-pelvis radiation therapy of prostate cancers: clinical experience

2020 ◽  
pp. 1-15
Author(s):  
Ernest Osei ◽  
Hafsa Mansoor ◽  
Johnson Darko ◽  
Beverley Osei ◽  
Katrina Fleming ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Radiation Therapy ◽  
High Risk ◽  
Cancer Patients ◽  
Seminal Vesicles ◽  
Conformity Index ◽  
Prostate Bed ◽  
Risk Patients ◽  
Treatment Plans ◽  
The Mean

Abstract Background: The standard treatment modalities for prostate cancer include surgery, chemotherapy, hormonal therapy and radiation therapy or any combination depending on the stage of the tumour. Radiation therapy is a common and effective treatment modality for low-intermediate-risk patients with localised prostate cancer, to treat the intact prostate and seminal vesicles or prostate bed post prostatectomy. However, for high-risk patients with lymph node involvement, treatment with radiation will usually include treatment of the whole pelvis to cover the prostate and seminal vesicles or prostate bed and the pelvic lymph nodes followed by a boost delivery dose to the prostate and seminal vesicles or prostate bed. Materials and Methods: We retrospectively analysed the treatment plans for 179 prostate cancer patients treated at the cancer centre with the volumetric-modulated arc therapy (VMAT) technique via RapidArc using 6 MV photon beam. Patients were either treated with a total prescription dose of 78 Gy in 39 fractions for patients with intact prostate or 66 Gy in 33 fractions for post prostatectomy patients. Results: There were 114 (64%) patients treated with 78 Gy/39 and 65 (36%) treated with 66 Gy/34. The mean homogeneity index (HI), conformity index (CI) and uniformity index (UI) for the PTV-primary of patients treated with 78 Gy are 0.06 ± 0.01, 1.04 ± 0.01 and 0.99 ± 0.01, respectively, and the corresponding mean values for patients treated with 66 Gy are 0.06 ± 0.02, 1.05 ± 0.01 and 0.99 ± 0.01, respectively. The mean PTV-primary V95%, V100% and V105% are 99.5 ± 0.5%, 78.8 ± 12.2% and 0.1 ± 0.5%, respectively, for patients treated with 78 Gy and 99.3 ± 0.9%, 78.1 ± 10.6% and 0.1 ± 0.4%, respectively, for patients treated with 66 Gy. The rectal V50Gy, V65Gy, V66.6Gy, V70Gy, V75Gy and V80Gy are 26.8 ± 9.1%, 14.2 ± 5.3%, 13.1 ± 5.0%, 10.8 ± 4.3%, 6.9 ± 3.1% and 0.1 ± 0.1%, respectively, for patients treated with 78 Gy and 33.7 ± 8.4%, 14.1 ± 4.5%, 6.7 ± 4.5%, 0.0 ± 0.2%, 0.0% and 0.0%, respectively, for patients treated with 66 Gy. Conclusion: The use of VMAT technique for radiation therapy of high-risk prostate cancer patients is an efficient and reliable method for achieving superior dose conformity, uniformity and homogeneity to the PTV and minimal doses to the organs at risk. Results from this study provide the basis for the development and implementation of consistent treatment criteria in radiotherapy programs, have the potential to establish an evaluation process to define a consistent, standardised and transparent treatment path for all patients that reduces significant variations in the acceptability of treatment plans and potentially improve patient standard of care.

scholarly journals Spatio-temporal mapping of breast and prostate cancers in South Iran from 2014 to 2017

BMC Cancer ◽  
2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Mahdieh Montazeri ◽  
Benyamin Hoseini ◽  
Neda Firouraghi ◽  
Fatemeh Kiani ◽  
Hosein Raouf-Mobini ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Prostate Cancer ◽  
Cluster Analysis ◽  
High Risk ◽  
Cancer Patients ◽  
Incidence Rate ◽  
Cancer Cluster ◽  
Natural Break ◽  
Prostate Cancers ◽  
North Western

Abstract Background The most common gender-specific malignancies are cancers of the breast and the prostate. In developing countries, cancer screening of all at risk is impractical because of healthcare resource limitations. Thus, determining high-risk areas might be an important first screening step. This study explores incidence patterns of potential high-risk clusters of breast and prostate cancers in southern Iran. Methods This cross-sectional study was conducted in the province of Kerman, South Iran. Patient data were aggregated at the county and district levels calculating the incidence rate per 100,000 people both for cancers of the breast and the prostate. We used the natural-break classification with five classes to produce descriptive maps. A spatial clustering analysis (Anselin Local Moran’s I) was used to identify potential clusters and outliers in the pattern of these cancers from 2014 to 2017. Results There were 1350 breast cancer patients (including, 42 male cases) and 478 prostate cancer patients in the province of Kerman, Iran during the study period. After 45 years of age, the number of men with diagnosed prostate cancer increased similarly to that of breast cancer for women after 25 years of age. The age-standardised incidence rate of breast cancer for women showed an increase from 29.93 to 32.27 cases per 100,000 people and that of prostate cancer from 13.93 to 15.47 cases per 100,000 during 2014–2017. Cluster analysis at the county level identified high-high clusters of breast cancer in the north-western part of the province for all years studied, but the analysis at the district level showed high-high clusters for only two of the years. With regard to prostate cancer, cluster analysis at the county and district levels identified high-high clusters in this area of the province for two of the study years. Conclusions North-western Kerman had a significantly higher incidence rate of both breast and prostate cancer than the average, which should help in designing tailored screening and surveillance systems. Furthermore, this study generates new hypotheses regarding the potential relationship between increased incidence of cancers in certain geographical areas and environmental risk factors.

scholarly journals Risk-adapted survival benefit of IMRT in early-stage NKTCL: a multicenter study from the China Lymphoma Collaborative Group

2018 ◽  
Vol 2 (18) ◽  
pp. 2369-2377 ◽  
Author(s):  
Tao Wu ◽  
Yong Yang ◽  
Su-Yu Zhu ◽  
Mei Shi ◽  
Hang Su ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
High Risk ◽  
Survival Benefit ◽  
Early Stage ◽  
Low Risk ◽  
Collaborative Group ◽  
High Dose ◽  
Conformal Radiation Therapy ◽  
Risk Patients ◽  
3D Crt

Abstract This study evaluated the survival benefit of intensity-modulated radiation therapy (IMRT) compared with 3-dimension conformal radiation therapy (3D-CRT) in a large national cohort of patients with early-stage extranodal nasal-type natural killer/T-cell lymphoma (NKTCL). This retrospective study reviewed patients with early-stage NKTCL treated with high-dose radiation therapy (RT; ≥45 Gy) at 16 Chinese institutions. Patients were stratified into 1 of 4 risk groups based on the number of risk factors: low risk (no factors), intermediate-low risk (1 factor), intermediate-high risk (2 factors), and high-risk (3-5 factors). Of the 1691 patients, 981 (58%) received IMRT, and 710 (42%) received 3D-CRT. Unadjusted 5-year overall survival (OS) and progression-free survival (PFS) were 75.9% and 67.6%, respectively, for IMRT compared with 68.9% (P = .004) and 58.2% (P &lt; .001), respectively, for 3D-CRT. After propensity score match and multivariable analyses to account for confounding factors, IMRT remained significantly associated with improved OS and PFS. The OS and PFS benefits of IMRT persisted in patients treated with modern chemotherapy regimens. Compared with 3D-CRT, IMRT significantly improved OS and PFS for high-risk and intermediate-high–risk patients but provided limited benefits for low-risk or intermediate-low–risk patients. A risk-adapted survival benefit profile of IMRT can be used to select patients and make treatment decisions.

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