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"Poinas, Gregoire"
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Artificial intelligence to improve cytology performance in urothelial carcinoma diagnosis: results from validation phase of the French, multicenter, prospective VISIOCYT1 trial
by
Paoletti, Xavier
,
Savareux, Laurent
,
Roumiguié, Mathieu
in
Artificial intelligence
,
Bladder cancer
,
Cellular biology
2023
PurposeCytology and cystoscopy, the current gold standard for diagnosing urothelial carcinomas, have limits: cytology has high interobserver variability with moderate or not optimal sensitivity (particularly for low-grade tumors); while cystoscopy is expensive, invasive, and operator dependent. The VISIOCYT1 study assessed the benefit of VisioCyt® for diagnosing urothelial carcinoma.MethodsVISIOCYT1 was a French prospective clinical trial conducted in 14 centers. The trial enrolled adults undergoing endoscopy for suspected bladder cancer or to explore the lower urinary tract. Participants were allocated either Group 1: with bladder cancer, i.e., with positive cystoscopy or with negative cystoscopy but positive cytology, or Group 2: without bladder cancer. Before cystoscopy and histopathology, slides were prepared for cytology and the VisioCyt® test from urine samples. The diagnostic performance of VisioCyt® was assessed using sensitivity (primary objective, 70% lower-bound threshold) and specificity (75% lower-bound threshold). Sensitivity was also assessed by tumor grade and T-staging. VisioCyt® and cytology performance were evaluated relative to the histopathological assessments.ResultsBetween October 2017 and December 2019, 391 participants (170 in Group 1 and 149 in Group 2) were enrolled. VisioCyt®’s sensitivity was 80.9% (95% CI 73.9–86.4%) and specificity was 61.8% (95% CI 53.4–69.5%). In high-grade tumors, the sensitivity was 93.7% (95% CI 86.0–97.3%) and in low-grade tumors 66.7% (95% CI 55.2–76.5%). Sensitivity by T-staging, compared to the overall sensitivity, was higher in high-grade tumors and lower in low-grade tumors.ConclusionVisioCyt® is a promising diagnostic tool for urothelial cancers with improved sensitivities for high-grade tumors and notably for low-grade tumors.
Journal Article
European Study of Prostate Cancer Screening — 23-Year Follow-up
by
de Vos, Ivo I.
,
Zappa, Marco
,
Godtman, Rebecka A.
in
Aged
,
Aged, 80 and over
,
Cancer and Oncology
2025
The European Randomized Study of Screening for Prostate Cancer (ERSPC) was initiated in 1993 to assess the effect of prostate-specific antigen (PSA) testing on prostate cancer mortality. Because deaths from prostate cancer are expected to rise worldwide owing to increased life expectancy and population growth, a final analysis of the long-term outcomes of prostate cancer screening is essential to understanding the benefits and harms of PSA testing.
We updated the findings from ERSPC, a multicenter, randomized study conducted across eight European countries with a focus on a predefined core age group of 162,236 men who were 55 to 69 years of age at the time of randomization. Participants were randomly assigned to the screening group and offered repeated PSA testing or to the control group and not invited for screening. The primary outcome was prostate cancer mortality.
After a median follow-up of 23 years, prostate cancer mortality was 13% lower in the screening group (rate ratio, 0.87; 95% confidence interval [CI], 0.80 to 0.95), and the absolute risk reduction was 0.22% (95% CI, 0.10 to 0.34). The cumulative incidence of prostate cancer was higher in the screening group than in the control group (rate ratio, 1.30; 95% CI, 1.26 to 1.33). At a median of 23 years of follow-up, one death from prostate cancer was prevented for every 456 men (95% CI, 306 to 943) who were invited for screening, and one death from prostate cancer was averted for every 12 men (95% CI, 8 to 26) in whom prostate cancer was diagnosed, as compared with one death from prostate cancer prevented for every 628 men (95% CI, 419 to 1481) and one death averted for every 18 men (95% CI, 12 to 45) at 16 years of follow-up.
Long-term follow-up confirms a sustained reduction in deaths from prostate cancer with PSA testing, alongside an improved harm-benefit ratio. Future screening strategies should adopt risk-based approaches to minimize overdiagnosis while maintaining clinical benefits. (Funded by the Dutch Cancer Society and others; ERSPC ISRCTN registry number, ISRCTN49127736.).
Journal Article
Robot-assisted approach versus open surgery and conventional laparoscopy for radical prostatectomy for prostate cancer: a micro-costing study
by
Daurès, Jean Pierre
,
Bouvet, Sophie
,
Chkair, Sihame
in
Costs
,
Data collection
,
Diagnosis related groups
2025
Background
The economic impact of RARP versus laparoscopic (LRP) or open surgical radical prostatectomy (OSRP) is unclear. The objective is to estimate and compare the total cost of radical prostatectomy with and without robot assistance from the French establishment perspective. This estimate can assess the cost benefit of robotic-assisted radical prostatectomy (RARP) and determine who should pay.
Methods
A micro-costing bottom-up time-and-motion approach was used based on 2018 prices (€). In public hospitals, observed data for OSRP and RARP was used; in private hospitals, expert opinions were sought from clinicians for RARP and LRP. Average costs, costs per minute of surgery and costs per expenditure were compared between techniques. A sensitivity analysis accounted for variability in cost of personnel and amortized cost of Da Vinci robot.
Results
The average estimated cost of surgery was 4683.35€ [95% CI=2900; 6467.2] more for RARP versus LRP in private clinics, and 3744€ [95% CI=3525; 3963] for RARP versus OSRP in public hospital. Recovery costs were equivalent between techniques (112.9€ for RARP and LRP in private and 46.1€ [95% CI=31.8; 60.4] for OSRP and 47.8€ [95% CI=39.1; 56.5] for RARP in public hospital). The sensitivity analysis confirmed the extra cost for RARP versus LRP or OSRP.
Conclusions
Depending on the surgery compared (OSRP or LRP), institute type (public or private) and data source (observed or expert opinion), the extra cost of the robot varied from 3744€ to 4683.35€. The amortized cost of the robot and its specific materials were the main elements of the difference.
Trial registration
This comparative, multi-centre economic study combines one secondary objective from the RoboProstate study (NCT01577836) and part 1 of the OptiPRobot study (IRB #19.07.03).
Journal Article
Nonsteroidal anti‐inflammatory drugs (NSAIDs) and prostate cancer risk: results from the EPICAP study
by
Nayraud, Philippe
,
Badsi, A
,
Poinas, Grégoire
in
Adult
,
Aged
,
Anti-Inflammatory Agents, Non-Steroidal - adverse effects
2017
Chronic inflammation may play a role in prostate cancer carcinogenesis. In that context, our objective was to investigate the role of nonsteroidal anti‐inflammatory drugs (NSAIDs) in prostate cancer risk based on the EPICAP data. EPICAP is a population‐based case–control study carried out in 2012–2013 (département of Hérault, France) that enrolled 819 men aged less than 75 years old newly diagnosed for prostate cancer and 879 controls frequency matched to the cases on age. Face to face interviews gathered information on several potential risk factors including NSAIDs use. Odds ratios (ORs) and their 95% confidence intervals (CIs) were calculated using unconditional logistic regression models. All‐NSAIDs use was inversely associated with prostate cancer: OR 0.77, 95% CI 0.61–0.98, especially in men using NSAIDs that preferentially inhibit COX‐2 activity (OR 0.48, 95% CI 0.28–0.79). Nonaspirin NSAIDs users had a decreased risk of prostate cancer (OR 0.72, 95% CI 0.53–0.99), particularly among men with an aggressive prostate cancer (OR 0.49, 95% CI 0.27–0.89) and in men with a personal history of prostatitis (OR 0.21, 95% CI 0.07–0.59). Our results are in favor of a decreased risk of prostate cancer in men using NSAIDs, particularly for men using preferential anti‐COX‐2 activity. The protective effect of NSAIDs seems to be more pronounced in aggressive prostate cancer and in men with a personal history of prostatitis, but this needs further investigations to be confirmed. Our results showed a decreased risk of prostate cancer in men using NSAIDs, especially with frequent, current, and chronic use. This effect is particularly observed in men using nonaspirin NSAIDs, and especially with preferential anti‐COX‐2 activity. Protective effect of NSAIDs seemed to be more pronounced in aggressive prostate cancer and in situation of chronic inflammation mediated by a personal history of prostatitis.
Journal Article
Epidemiological study of prostate cancer (EPICAP): a population-based case–control study in France
by
Lamy, Pierre-Jean
,
Rébillard, Xavier
,
Iborra, François
in
Aged
,
Biomedical and Life Sciences
,
Biomedicine
2014
Background
Prostate cancer is the most common cancer in male in most Western countries, including France. Despite a significant morbidity and mortality to a lesser extent, the etiology of prostate cancer remains largely unknown. Indeed, the only well-established risk factors to date are age, ethnicity and a family history of prostate cancer. We present, here, the rationale and design of the EPIdemiological study of Prostate CAncer (EPICAP), a population-based case–control study specifically designed to investigate the role of environmental and genetic factors in prostate cancer. The EPICAP study will particularly focused on the role of circadian disruption, chronic inflammation, hormonal and metabolic factors in the occurrence of prostate cancer.
Methods/Design
EPICAP is a population-based case–control study conducted in the
département
of Hérault in France. Eligible cases are all cases of prostate cancers newly diagnosed in 2012-2013 in men less than 75 years old and residing in the
département
of Hérault at the time of diagnosis. Controls are men of the same age as the cases and living in the
département
of Hérault, recruited in the general population.
The sample will include a total of 1000 incident cases of prostate cancer and 1000 population-based controls over a 3-year period (2012-2014).
The cases and controls are face-to-face interviewed using a standardized computed assisted questionnaire. The questions focus primarily on usual socio-demographic characteristics, personal and family medical history, lifestyle, leisure activities, residential and occupational history. Anthropometric measures and biological samples are also collected for cases and controls.
Discussion
The EPICAP study aims to answer key questions in prostate cancer etiology: (1) role of circadian disruption through the study of working hours, chronotype and duration/quality of sleep, (2) role of chronic inflammation and anti-inflammatory drugs, (3) role of hormonal and metabolic factors through a detailed questionnaire, (4) role of individual genetic susceptibility of genes involved in biological pathways of interest. The EPICAP study will also allow us to study prognostic factors and tumor aggressiveness.
Taken together, the EPICAP study will provide a comprehensive framework to go further in the understanding of prostate cancer occurrence and its prognosis.
Journal Article
Evaluation of the safety and efficacy of XAV-19 in patients with COVID-19-induced moderate pneumonia: study protocol for a randomized, double-blinded, placebo-controlled phase 2 (2a and 2b) trial
by
Vibet, Marie-Anne
,
Flet, Laurent
,
Morineau-Le Houssine, Pascale
in
Animals
,
Anti-SARS-CoV-2 antibodies
,
Antibodies
2021
Background
Early inhibition of entry and replication of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a very promising therapeutic approach. Polyclonal neutralizing antibodies offers many advantages such as providing immediate immunity, consequently blunting an early pro-inflammatory pathogenic endogenous antibody response and lack of drug-drug interactions.
By providing immediate immunity and inhibiting entry into cells, neutralizing antibody treatment is of interest for patient with COVID-19-induced moderate pneumonia. Convalescent plasma to treat infected patients is therefore a relevant therapeutic option currently under assessment (CORIMUNO-PLASM NCT04324047). However, the difficulties of collecting plasma on the long term are not adapted to a broad use across all populations.
New polyclonal humanized anti-SARS-CoV2 antibodies (XAV-19) developed by Xenothera and administered intravenous. XAV-19 is a heterologous swine glyco-humanized polyclonal antibody (GH-pAb) raised against the spike protein of SARS-CoV-2, blocking infection of ACE-2-positive human cells with SARS-CoV-2.
Methods
Pharmacokinetic and pharmacodynamic studies have been performed in preclinical models including primates. A first human study with another fully representative GH-pAb from Xenothera is ongoing in recipients of a kidney graft. These studies indicated that 5 consecutive administrations of GH-pAbs can be safely performed in humans.
The objectives of this 2-step phase 2 randomized double-blinded, placebo-controlled study are to define the safety and the optimal XAV-19 dose to administrate to patients with SARS-CoV-2 induced moderate pneumonia, and to assess the clinical benefits of a selected dose of XAV-19 in this population.
Discussion
This study will determine the clinical benefits of XAV-19 when administered to patients with SARS-CoV-2-induced moderate pneumonia. As a prerequisite, a first step of the study will define the safety and the dose of XAV-19 to be used.
Such treatment might become a new therapeutic option to provide an effective treatment for COVID-19 patients (possibly in combination with anti-viral and immunotherapies). Further studies could later evaluate such passive immunotherapy as a potential post-exposure prophylaxis.
Trial registration
ClinicalTrials.gov
NCT04453384
, registered on 1 July 2020, and EUDRACT 2020-002574-27, registered 6 June 2020.
Journal Article