Radical Local Treatment Research Articles

Systemic and tumor-directed therapy for oligometastatic prostate cancer (SOLAR): A phase II trial for veterans with de novo oligometastatic prostate cancer.

163 Background: Treatment paradigms for oligometastatic castration-sensitive prostate cancer patients are evolving. Molecular imaging improves staging, intensified systemic and primary tumor directed therapy improves survival, metastasis-directed therapy improves local control. The impact of combining these imaging and therapeutic approaches into a planned multimodal treatment strategy is unknown. Here we report a prospective phase II single-arm trial combining local, metastasis-directed, and intensified systemic therapies of limited duration with the objective to durably render Veterans free of progression off therapy. Methods: Veterans with de novo M1a/b prostate cancer and 1-5 radiographically visible M1 lesions underwent radical local treatment, intensified systemic therapy for six months (leuprolide, abiraterone acetate with prednisone, apalutamide), and metastasis-directed stereotactic ablative radiotherapy (SBRT). Radical local therapy was either radical prostatectomy (n=12) with lymph node dissection and post-operative radiotherapy (pT≥3a, N1, or positive margins) or radical radiotherapy (n=12) directed to the prostate, SVs, and pelvic LNs. The primary endpoint was the percentage of patients achieving an undetectable serum PSA (for radical prostatectomy) or <2 ng/mL (for radical radiotherapy) six months after recovery of testosterone to ≥150 ng/dL. Secondary endpoints included time to biochemical progression, time to radiographic progression, time to initiation of alternative antineoplastic therapy, prostate cancer specific survival, health related quality-of-life, safety and tolerability. Results: Twenty-eight patients enrolled and 4 dropped out (3 prior to start of treatment). All were staged by PSMA PET/CT except two (one by Fluciclovine PET/CT, and one by NaF PET/CT, CT, MRI). Twenty-nine percent were M1a, seventy-one percent were M1b. Median follow-up was 30 months (range 20 - 61 months). Mean and median number of M1 metastases were both two. Sixty-two percent completed all planned systemic therapy without dose modification. One did not recover testosterone after 29 months. Twenty-two had >6 months follow-up after testosterone recovery, 19 of 22 (86%) remain free of any progression (primary endpoint). Three had metastatic progression, one poly nodal M1a progression, one multiple bone metastases, one multiple bone and nodal metastases. Grade 2 and 3 toxicities for primary tumor therapy were 46% and 4%; SBRT 0% and 0%; systemic therapy 42% and 4%. There was one Grade 4 toxicity. Conclusions: Although a small trial, a majority of patients with molecular imaging defined de novo oligometastatic prostate cancer treated with primary and metastasis-directed therapy with intensified systemic therapy of limited duration remained free of progression with a recovered testosterone off all active therapy. Clinical trial information: NCT03298087 .

Oligometastatic Disease (OMD): The Classification and Practical Review of Prospective Trials.

Oligometastatic disease (OMD) is currently known as an intermediate state of cancer, characterized by a limited number of systemic metastatic lesions for which local ablative therapy could be curative. Indeed, data from multiple clinical trials have illustrated an increase in overall survival (OS) for cancer patients when local ablative therapy was included in the systemic adjuvant therapy. Given that no driver and somatic mutations specific to OMD are currently established, the diagnosis of OMD is mainly based on the results of X-ray studies. In 2020, 20 international experts from the European Society for Radiotherapy and Oncology (ESTRO) and the European Organization for Research and Treatment of Cancer (EORTC) developed a comprehensive system for the characterization and classification of OMD. They identified 17 OMD characteristics that needed to be assessed in all patients who underwent radical local treatment. These characteristics reflect the tumor biology and clinical features of the disease underlying the development of OMD independently of the primary tumor type and the number of metastatic lesions. In particular, the system involves the characteristics of the primary tumor (e.g., localization, histology, TNM stage, mutational status, specific tumor markers), clinical parameters (e.g., disease-free interval, treatment-free interval), therapies (e.g., local, radical or palliative treatment, the numbers of the therapeutic regimens), and type of OMD (e.g., invasive). Based on the aforementioned criteria, an algorithm was introduced into the clinic to classify OMDs collectively according to their nomenclature. A history of polymetastatic disease (PMD) prior to OMD is used as a criterion to delineate between induced OMD (previous history of PMD after successful therapy) and genuine OMD (no history of PMD). Genuine OMD is divided into two states: recurrent OMD (i.e., after a previous history of OMD) and de novo OMD (i.e., a first newly diagnosed oligometastatic disease). de novo OMD is differentiated into synchronous and metachronous forms depending on the length of time from the primary diagnosis to the first evidence of OMD. In the case of synchronous OMD, this period is less than 6 months. Lastly, metachronous and induced OMD are divided into oligorecurrence, oligoprogression, and oligopersistence, depending on whether OMD is firstly diagnosed during an absence (oligo recurrence) or presence (oligoprogression or oligopersistence) of active systemic therapy. This classification and nomenclature of OMD are evaluated prospectively in the OligoCare study. In this article, we present a practical review of the current concept of OMD and discuss the available prospective clinical trials and potential future directions.

PEACE V—Salvage Treatment of OligoRecurrent nodal prostate cancer Metastases (STORM): Acute Toxicity of a Randomized Phase 2 Trial

BackgroundTreatment recommendations for patients with limited nodal recurrences are lacking, and different locoregional treatment approaches are currently being used. ObjectiveThe aim of this trial is to compare metastasis-directed therapy (MDT) with or without elective nodal pelvic radiotherapy (ENRT). Design, setting, and participantsPEACE V—Salvage Treatment of OligoRecurrent nodal prostate cancer Metastases (STORM) is an international, phase 2, open-label, randomized, superiority trial (ClinicalTrials.gov identifier: NCT03569241). Patients diagnosed with positron emission tomography–detected pelvic nodal oligorecurrence (five or fewer nodes) following radical local treatment for prostate cancer were randomized in a 1:1 ratio between arm A (MDT and 6 mo of androgen deprivation therapy [ADT]) and arm B (ENRT [25 × 1.8 Gy] with MDT and 6 mo of ADT). Outcome measurements and statistical analysisWe report the secondary endpoint acute toxicity, defined as worst grade ≥2 Common Terminology Criteria for Adverse Events v4.0 gastrointestinal (GI) or genitourinary (GU) toxicity within 3 mo of treatment. The chi-square test was used to compare toxicity between treatment arms. We also compare the quality of life (QoL) using the European Organisation for Research and Treatment of Cancer QLQ C30 and PR25 questionnaires. Results and limitationsBetween June 2018 and April 2021, 196 patients were assigned randomly to MDT or ENRT. Ninety-seven of 99 patients allocated to MDT and 93 of 97 allocated to ENRT received per-protocol treatment. Worst acute GI toxicity proportions were as follows: grade ≥2 events in three (3%) in the MDT group versus four (4%) in the ENRT group (p = 0.11). Worst acute GU toxicity proportions were as follows: grade ≥2 events in eight (8%) in the MDT group versus 12 (13%) in the ENRT group (p = 0.95). We observed no significant difference between the study groups in the proportion of patients with a clinically significant QoL reduction from baseline for any subdomain score area. ConclusionsNo clinically meaningful differences were observed in worst grade ≥2 acute GI or GU toxicity or in QoL subdomains between MDT and ENRT. Patient summaryWe found no evidence of differential acute bowel or urinary side effects using metastasis-directed therapy and elective nodal radiotherapy for the treatment of patients with a pelvic lymph node recurrence.

Is radical local therapy effective in postoperative recurrent EGFR-mutated non-small cell lung cancer?

Long-term survival can be achieved with radical local therapy in some cases of postoperative recurrence of non-small cell lung cancer (NSCLC). Here, we evaluated post-recurrence survival (PRS) after treatment of postoperative recurrent epidermal growth factor receptor (EGFR) mutated NSCLC and examined the effectiveness of radical local therapy. This multicenter prospective cohort study was conducted in 14 hospitals. The inclusion criteria for this study were patients with recurrence after radical resection for NSCLC. Information about the patient characteristics at recurrence, tumor-related variables, primary surgery, and treatment for recurrence was collected. After registration, follow-up data (e.g., treatment and survival outcomes) were obtained and analyzed. From 2010 to 2015, 505 patients with recurrent NSCLC were enrolled into the study, and 154 EGFR mutation-positive cases were included. As the initial treatment for recurrence, 111 patients (72%) received chemotherapy, 14 (9%) received chemoradiotherapy, 14 (9%) received definitive radiotherapy, and seven (5%) received surgical resection. The remaining eight patients (5%) received supportive care. The median PRS and 5-year survival rates for all cases were 64 months and 53.2%, respectively. The 5-year survival rate according to the initial treatment was as follows: supportive care, 0%; chemotherapy, 53.3% and radical local therapy, 60.1%. The six patients who received radical local treatment remained recurrence-free for more than 3 years after recurrence with only initial treatment. Although radical local therapy may be curative in some patients, chemotherapy including EGFR-TKI treatment is expected to provide long-term survival comparable to that of radical local therapy.

PO-1610 SBRT as a radical local treatment in oligometastatic disease

PO-1610 SBRT as a radical local treatment in oligometastatic disease

Metastasis-Directed Therapy for Oligometastatic Castration-Sensitive Prostate Cancer: An Alternative to ADT?

The standard treatment of patients with metastatic prostate cancer is systemic treatment with androgen-deprivation therapy (ADT). The spectrum-based model of metastatic disease includes the presence of an oligometastatic state, an intermediary between localized and widespread metastatic disease, in which radical local treatment might improve systemic control. Our purpose is to review the literature on metastasis-directed therapy in the treatment of oligometastatic prostate cancer. Several prospective clinical trials have reported improvements in ADT-free survival and progression-free survival with metastasis-directed therapy of oligometastatic prostate cancer. Retrospective studies have found improvements in oncologic outcomes for patients with oligometastatic prostate cancer undergoing metastasis-directed therapy, and several recent prospective clinical trials have confirmed these results. Advancements in imaging as well as an understanding of the genomics of oligometastatic prostate cancer may allow for better patient selection for metastasis-directed therapy and the potential for cure in selected patients.

Effect of docetaxel added to bicalutamide in Hormone-Naïve non-metastatic prostate cancer with rising PSA, a randomized clinical trial (SPCG-14)

Background Historically, endocrine therapy was used in a range of scenarios in patients with rising PSA, both as a treatment for locally advanced non-metastatic prostate cancer and PSA recurrence following curative intended therapy. In the present study the objective was to investigate if chemotherapy added to endocrine therapy could improve progression-free survival (PFS). Materials and Methods Patients with hormone-naïve, non-metastatic prostate cancer and rising prostate-specific antigen (PSA), enrolled from Sweden, Denmark, the Netherlands, and Finland, were randomized to long-term bicalutamide (150 mg daily) or plus docetaxel (75 mg/m2, q3w, 8–10 cycles) without prednisone, after stratification for the site, prior local therapy or not, and PSA doubling time. The primary endpoint was 5-year PFS analyzed with a stratified Cox proportional hazards regression model on intention to treat basis. Results Between 2009 and 2018, a total of 348 patients were randomized; 315 patients had PSA relapse after radical treatment, 33 patients had no prior local therapy. Median follow-up was 4.9 years (IQR 4.0–5.1). Adding docetaxel improved PFS (HR 0.68, 95% CI 0.50–0.93; p = 0.015). Docetaxel showed an advantage for patients with PSA relapse after prior local therapy (HR 0.67, 95% CI 0.49–0.94; p = 0.019). One event of neutropenic infection/fever occurred in 27% of the patients receiving docetaxel. Limitations were slow recruitment, lack of enrolling patients without radical local treatment, and too short follow-up for evaluation of overall survival in patients with PSA relapse. Conclusion Docetaxel improved PFS in patients starting bicalutamide due to PSA relapse after local therapy or localized disease without local therapy. Confirmatory studies of the efficacy of docetaxel in the setting of PSA-only relapse in addition to endocrine therapies may be justified if longer follow-up will show increased metastatic-free survival.

A low prostate specific antigen predicts a worse outcome in high but not in low/intermediate-grade prostate cancer

ObjectiveThe relationship between prostate-specific antigen (PSA) and prostate cancer (PCa) grade was traditionally thought to be linear but recent reports suggest this is not true in high-grade cancers. We aimed to compare the association between PSA and PCa-specific mortality (PCSM) in clinically localised low/intermediate and high-grade PCa. Subjects/patients and methodsRetrospective cohort study using the National Prostate Cancer Audit database in England of men treated with external beam radiotherapy (EBRT), EBRT and brachytherapy boost (EBRT + BT), radical prostatectomy or no radical local treatment between 2014 and 2018. Multivariable competing-risk regression was used to examine the association between PSA, Gleason, and PCSM. Multivariable restricted cubic spline regression was used to explore the non-linear associations of PSA and PCSM. Results102,089 men were included, of whom 71,138 had low/intermediate-grade and 22,425 had high-grade PCa. In high-grade, 4-year PCSM was higher with PSA ≤5 than PSA 5.1–10 for men treated with EBRT (hazard ratio 1.96 (95% confidence interval 1.15–3.34) or no radical local treatment (hazard ratio 1.99 (95% confidence interval 1.33–2.98). Restricted cubic spline regression showed that PSA and PCSM have a non-linear association in high-grade but a linear association in low/intermediate-grade PCa. ConclusionThe low-PSA/high-grade combination in M0 PCa treated with EBRT has a higher PCSM than those with high-grade and intermediate PSA levels. In high-grade disease, the PSA association was non-linear; by contrast, low/intermediate-grade had a linear relationship. This confirms a more aggressive biology in low PSA secreting high-grade PCa and a worse outcome following treatment.

Prise en charge des formes oligométastatiques : l’avis de l’oncologue thoracique

The concept of oligometastatic disease applies to a subpopulation of patients with a low tumor burden clinically characterized by a limited number of metastases. These oligometastatic stages could benefit of intensive therapeutic options combining systemic treatment and radical local treatment of secondary and primary lesions, as surgery, conventional or stereotaxic radiotherapy and interventional radiology. Evaluation of immunotherapy combined with radiotherapy is ongoing in this particular clinical setting. Patients’ identification who could be suitable candidates for such therapeutic strategies remains difficult in order to achieve significant clinical benefit without additional toxicities. Besides clinical prognostic factors (PS, stage N, chronology of occurrence and/or site of metastases…), determination of predictive biomarkers (micro-RNA, genomic signatures…) would be useful to optimize management of oligometastatic patients.1877-1203/© 2022 SPLF. Published by Elsevier Masson SAS. All rights reserved.

Conversion therapy with the intent to perform radical local treatment may not be suitable for patients with 10 or more liver metastases from colorectal cancer.

The number of colorectal cancer liver metastases (CRLMs) is usually considered a contradictory indicator to surgical resection. However, some patients with initially unresectable CRLMs can receive radical local treatment after conversion therapy. This study aimed to evaluate the effect of radical local treatment after conversion therapy and the prognosis of patients with more than 10 initially unresectable CRLMs. Data for a total of 229 patients with initially unresectable CRLMs were retrospectively reviewed between December 2012 and January 2020. Among these patients, 107 had ≥10 CRLMs, and 122 had <10 CRLMs. Overall survival (OS) and progression-free survival (PFS) were used to reflect the prognosis of different groups of patients. Conversion therapy was defined as an initially unresectable liver metastasis converted into an R0 resectable lesion after systemic chemotherapy. Radical local treatment included hepatectomy and radiofrequency ablation (RFA). Patients with ≥10 CRLMs had a lower conversion rate (42.7% vs. 56.6%, p=0.001). Baseline clinical N stage 1-2, ≥8 first-line chemotherapy courses, and stable disease (SD) according to the Response Evaluation Criteria in Solid Tumours (RECIST) were independent factors predictive of conversion failure. Primary tumour location in the right colon, RECIST response of SD, and the absence of targeted therapy were independent factors predictive of unfavourable OS. The survival curves revealed that the OS of patients with or without conversion could be distinguished only among patients with <10 CRLMs (89.9% [95% CI, 82.5%-98.0%] vs. 58.9% [95% CI, 45.2%-76.7%], p < 0.001); this cut-off point could also distinguish patients with a successful conversion outcome according to OS (89.9% [95% CI, 82.5-98.0%] vs. 58.2% [95% CI, 42.2-80.4%], p=0.008). For CRLMs ≥ 10, patients with a successful conversion outcome cannot be distinguished from those without successful conversion outcome according to OS. Thus, conversion therapy with the intent to perform radical local treatment may not be suitable for patients with 10 or more liver metastases from colorectal cancer.

Comparison of the treatment of men with prostate cancer between the US and England: an international population-based study.

The treatment of prostate cancer varies between the United States (US) and England, however this has not been well characterised using recent data. We therefore investigated the extent of the differences between US and English patients with respect to initial treatment. We used the Surveillance, Epidemiology, and End Results (SEER) database to identify men diagnosed with prostate cancer in the US and the treatments they received. We also used the National Prostate Cancer Audit (NPCA) database for the same purposes among men diagnosed with prostate cancer in England. Next, we used multivariable regression to estimate the adjusted risk ratio (aRR) of receiving radical local treatment for men with non-metastatic prostate cancer according to the country of diagnosis (US vs. England). The five-tiered Cambridge Prognostic Group (CPG) classification was included as an interaction term. We identified 109,697 patients from the SEER database, and 74,393 patients from the NPCA database, who were newly diagnosed with non-metastatic prostate cancer between April 1st 2014 and December 31st 2016 with sufficient information for risk stratification according to the CPG classification. Men in the US were more likely to receive radical local treatment across all prognostic groups compared to men in England (% radical treatment US vs. England, CPG1: 38.1% vs. 14.3% - aRR 2.57, 95% CI 2.47-2.68; CPG2: 68.6% vs. 52.6% - aRR 1.27, 95% CI 1.25-1.29; CPG3: 76.7% vs. 67.1% - aRR 1.12, 95% CI 1.10-1.13; CPG4: 82.6% vs. 72.4% - aRR 1.09, 95% CI 1.08-1.10; CPG5: 78.2% vs. 71.7% - aRR 1.06, 95% CI 1.04-1.07) CONCLUSIONS: Treatment rates were higher in the US compared to England raising potential over-treatment concerns for low-risk disease (CPG1) in the US and under-treatment of clinically significant disease (CPG3-5) in England.

Urothelial cancer: population-based analysis of the problem in Ukraine

The aim of this work was to conduct a population analysis on the basis of the National Cancer Registry with the primary goal: to determine the effectiveness of urothelial cancer treatment in Ukraine; and the secondary goal: to identify the main trends and approaches to therapy with an assessment of their impact on overall survival. Materials and methods. The design of the study was retrospective observational. The analysis was conducted based on the data of the National Cancer Registry from 2008 to 2020. A total of 12,698 patients with urothelial tumors of the upper urinary tract and bladder who underwent surgical treatment were analyzed. Statistical sampling was performed based on the creation of the most homogeneous groups of patients with bladder cancer (BC) and the upper urinary tract carcinoma (UUTc) who had the required number of notified parameters for further analysis. The primary objectives of the analysis were to determine: the average age of primary detection of the studied nosologies, level of detection depending on gender, frequency of diagnosis verification before surgery, extent of surgery, frequency of postoperative complications based on data on 30-day rehospitalization, the level of deviation of the principles for prophylactic medical patients’ examination from generally accepted recommendations. The secondary objective was to assess the cumulative survival of patients with urothelial tumors depending on the localization of the primary tumor and the type of surgery (organ-sparing or radical). Results. Organ-sparing treatment was more typical for BC, while radical treatment was performed in 15 % of patients with carcinomas. Organ-sparing treatment was more typical for UUTc (40%). It should be noted that in this nosology it is acceptable for invasive forms of urothelial cancer. The level of 30-day hospitalization was low in both pathologies, with a slightly greater advantage of UUTc. The level of complications is grade III according to the Clavien-Dindo classification, averaging 0.2 % for the entire pool of patients. For BC, the overall survival rates by stages were: I — 73%, II — 49 %, III — 18 % and IV — 11 % (chi-square=1,807.207; p= 0.000001). For UUTc, the levels of 5-year overall survival correspond to the literature data, but there is a significant negative tendency to decrease the latter after a 10-year period for all stages (chi-square = 146.298; p = 0.000003). In Ukraine, organ-sparing treatment for UUTc was not inferior to radical nephroureterectomy in the context of 5-year survival (51.3 vs. 51%; log-rank test). The obtained data testify in favor of the 15% advantage of the total survival of patients who underwent radical nephroureterectomy at the premises of the National Cancer Institute (high volume center), compared to other regions of Ukraine. Levels of 5- and 10-year survival in both nosologies were characterized by a statistically non-significant advantage of UUTc over BC of 7 %. Conclusions. Superficial and locally advanced tumors are the most complex ones in the treatment of urothelial cancer of the bladder and upper urinary tract in Ukraine. Superficial tumors require the most radical surgeries and subsequent effective local treatment. Locally advanced tumors require a comprehensive approach to treatment, adequate systemic therapy influences the final indicators of overall survival. In cases of surgical resectability and preservation of renal function, UUTc requires organ-sparing treatment; this approach aims to increase creatinine clearance in patients before systemic chemotherapy and to reduce the likelihood of progression of comorbidities and associated mortality.

Determinants of variation in radical local treatment for men with high-risk localised or locally advanced prostate cancer in England.

Many factors are implicated in the potential 'under-treatment' of prostate cancer but little is known about the between-hospital variation. The National Prostate Cancer Audit (NPCA) database was used to identify high-risk localised or locally advanced prostate cancer patients in England, between January 2014 and December 2017, and the treatments received. Hospital-level variation in radical local treatment was explored visually using funnel plots. The intra-class correlation coefficient (ICC) quantified the between-hospital variation in a random-intercept multivariable logistic regression model. 53,888 men, from 128 hospitals, were included and 35,034 (65.0%) received radical local treatment. The likelihood of receiving radical local treatment was increased in men who were younger (the strongest predictor), more affluent, those with fewer comorbidities, and in those with a non-Black ethnic background. There was more between-hospital variation (P < 0.001) for patients aged ≥80 years (ICC: 0.235) compared to patients aged 75-79 years (ICC: 0.070), 70-74 years (ICC: 0.041), and <70 years (ICC: 0.048). Comorbidity and socioeconomic deprivation did not influence the between-hospital variation. Radical local treatment of high-risk localised or locally advanced prostate cancer depended strongly on age and comorbidity, but also on socioeconomic deprivation and ethnicity, with the between-hospital variation being highest in older patients.

Prise en charge des cancers bronchiques non à petites cellules oligométastatiques: Management of non-small oligometastatic lung cancer: Update 2021

The concept of oligometastatic disease applies to a subpopulation of patients with a low tumor burden clinically characterized by a limited number of metastases. The 8th TNM classification differentiates this subgroup of patients with a single extra-thoracic metastasis (stage M1b) from patients with several extrathoracic metastases in one or more organs (stage M1c). These oligometastatic stages could benefit of intensive therapeutic options combining systemic treatment and radical local treatment of secondary and primary lesions, as surgery, conventional or stereotaxic radiotherapy and interventional radiology. Evaluation of immunotherapy combined with radiotherapy is ongoing in this particular clinical setting. Identification of patients candidates for such therapeutic strategies remains difficult in order to acheve significant clinical benefit without additional toxicities. Besides clinical prognostic factors (PS, stage N, chronology of occurrence and/ or site of metastases…), determination of predictive biomarkers (micro-RNA, genomic signatures, PDL1 status…) would be useful to optimize management of oligometastatic patients.© 2021 SPLF. Published by Elsevier Masson SAS. All rights reserved.

Recurrent colorectal liver metastasis patients could benefit from repeat hepatic resection

BackgroundLocal treatment remains the best option for recurrent colorectal liver metastasis (CRLM). The current study aimed to investigate predictive factors of survival outcomes and select candidates for local treatment for CRLM at first recurrence.MethodsData were collected retrospectively from CRLM patients who underwent hepatic resection and developed first recurrence between 2000 and 2019 at our institution. A nomogram predicting overall survival was established based on a multivariable Cox model of clinicopathologic factors. The predictive accuracy and discriminative ability of the nomogram were determined by the concordance index and calibration curve.ResultsAmong 867 patients who underwent curative hepatic resection, 549 patients developed recurrence. Three hundred patients were evaluated and had resectable and liver-limited disease. Among them, repeat liver resection and percutaneous radiofrequency ablation were performed in 88 and 85 patients, respectively. The other 127 patients received only systemic chemotherapy. Multivariable analysis identified primary lymph node positivity, tumor size > 3 cm, early recurrence, RAS gene mutation and no local treatment as independent risk factors for survival outcomes. Integrating these five variables, the nomogram presented a good concordance index of 0.707. Compared with patients who received only systemic chemotherapy, radical local treatment did not significantly improve survival outcomes (median OS: 21 vs. 15 months, p = 0.126) in the high-risk group (total score ≥ 13).ConclusionRadical local treatment improved the survival of recurrent CRLM patients. The proposed model facilitates personalized assessments of prognosis for patients who develop first recurrence in the liver.

Place de la radiothérapie dans la prise en charge des patients atteints d’un cancer bronchique non à petites cellules oligométastatique

The oligometastatic disease concept suggests that patients with a limited number of metastases have a favorable prognosis. Radical local treatment of oligometastatic patients has then increased given developments in imaging (mainly positron emission tomography and brain magnetic resonance imaging) and access to effective and better tolerated treatments. Stereotactic radiotherapy has the advantage of being noninvasive, allowing a good rate of local control and a limited number of side effects. A better definition of oligometastatic disease, particularly for non-small cell lung cancer (NSCLC), has recently been published. For patients with NSCLC, two randomized phase II trials also suggested that the addition of a radical local treatment results in encouraging survival data, with a good safety profile. A single-arm phase II finally showed a benefit when combining a radical local treatment with an anti-PD1 immunotherapy. This review describes the definitions of oligometastatic disease, the main prospective findings including radiation therapy, and prospects for oligometastatic NSCLC patients.

P1200 - Determinants of variation in radical local treatment for men with high-risk localised or locally advanced prostate cancer in England

P1200 - Determinants of variation in radical local treatment for men with high-risk localised or locally advanced prostate cancer in England

Medycyna personalizowana w raku płuca

Personalised therapy is currently a promising method of treatment for cancer patients. The dynamic development of molecular biology enabled identification of molecular subtypes of neoplasms, allowing determination of the optimal therapeutic management for the patient. Molecular diagnostics is also essential for cancer diagnosis, predicting disease development and prognosis. In the case of lung cancer, which is one of the most common malignant neoplasms, the main candidates for targeted treatment are patients with stage III and IV of the disease and with no possibility of radical local treatment. In clinical practice, the most proven therapeutic agents are inhibitors of tyrosine kinase, i.e. a receptor of the epithelial growth factor (TKI-EGFR), inhibitors of ALK, ROS1, BRAF and others, as well as immunotherapy applying monoclonal antibodies against immunological system checkpoints in cases of high level expression of programmed death receptor type 1 (PD-1) or its ligand (PD-L1), but also in cases of the high tumour mutational burden (TMB). As compared to chemotherapy, targeted therapy undoubtedly improves the treatment outcomes and, due to its lower toxicity, improves the quality of life of advanced non-small cell lung cancer patients. The aim of this paper is to characterise molecular tests which are currently applied in qualification of non-small cell lung cancer patients for targeted therapies.

Oligometastatic head and neck cancer: Which patients benefit from radical local treatment of all tumour sites?

BackgroundThere is a large lack of evidence for optimal treatment in oligometastatic head and neck cancer and it is especially unclear which patients benefit from radical local treatment of all tumour sites.Methods40 patients with newly diagnosed oligometastatic head and neck cancer received radical local treatment of all tumour sites from 14.02.2008 to 24.08.2018. Primary endpoint was overall survival. Time to occurrence of new distant metastases and local control were evaluated as secondary endpoints as well as prognostic factors in univariate und multivariate Cox’s regression analysis. To investigate the impact of total tumour volume on survival, all tumour sites were segmented on baseline imaging.ResultsRadical local treatment included radiotherapy in 90% of patients, surgery in 25% and radiofrequency ablation in 3%. Median overall survival from first diagnosis of oligometastatic disease was 23.0 months, 2-year survival was 48%, 3-year survival was 37%, 4-year survival was 24% and 5-year survival was 16%. Median time to occurrence of new distant metastases was 11.6 months with freedom from new metastases showing a tail pattern after 3 years of follow-up (22% at 3, 4- and 5-years post-treatment). In multivariate analysis, better ECOG status, absence of bone and brain metastases and lower total tumour volume were significantly associated with improved survival, whereas the number of metastases and involved organ sites was not.ConclusionsRadical local treatment in oligometastatic head and neck cancer shows promising outcomes and needs to be further pursued. Patients with good performance status, absence of brain and bone metastases and low total tumour volume were identified as optimal candidates for radical local treatment in oligometastatic head and neck cancer and should be considered for selection in future prospective trials.

Clinical Utility of Bladder Cancer Biomarkers

Each year, there are an estimated 550 000 diagnoses of bladder cancer worldwide, and almost 200 000 deaths from bladder cancer. The need for frequent follow-up, including invasive procedures like cystoscopy, repetitive procedures like transurethral resection of bladder tumors and intravesical instillation therapy in non-muscle invasive stages, as well as systemic treatment with or without radical local treatment in advanced stages, makes bladder cancer one of the most expensive cancers to treat. Prognostic and predictive biomarkers have the potential to fundamentally change bladder cancer treatment algorithms, which may result in improved patient comfort and oncological outcomes and may also decrease the socioeconomic burden of the disease. Intense research has resulted in the recent approval by the U. S. Food and Drug Administration of the first agent for this disease that targets a specific mutation (fibroblast-growth factor receptor). Yet, many areas of bladder cancer diagnosis and treatment have remained unchanged for decades, and this is only in part due to their therapeutic success. In order to integrate biomarkers into clinical practice patterns, specific considerations for the different disease stages and settings should be kept in mind. Especially in the setting of screening, work-up of hematuria, as well as surveillance of patients with non-muscle invasive bladder cancer, (urine-)biomarkers may prove useful. They must, however, demonstrate a high enough sensitivity to pick up a cancer diagnosis or recurrence, allow easy handling (preferably a point-of-care setting) and adequate cost–benefit relationships, while also providing additional information to a full work-up. A biomarker to identify patients with muscle invasive bladder cancer who are in need of—and likely to respond to—neoadjuvant therapy would be very useful. In later disease, early detection of recurrence or progression, as well as biomarkers guiding treatment decisions between the available systemic agents, will be paramount for improved patient care.