Fabrice Denis

Prof. Dr. Fabrice Denis


Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 April 2017 in JNCI: Journal of the National Cancer Institute
Verified
Journal Article
Open access
PDF file
FDFabrice Denis
Fabrice Denis
CLClaire Lethrosne
Claire Lethrosne
NPNicolas Pourel
Nicolas Pourel
OMOlivier Molinier
Olivier Molinier
YPYoann Pointreau
Yoann Pointreau
CLChristophe Letellier
Christophe Letellier
The use of web-based monitoring for lung cancer patients is growing in interest because of promising recent results suggesting improvement in cancer and resource utilization outcomes. It remains an open question whether the overall survival (OS) in these patients could be improved by using a web-mediated follow-up rather than classical scheduled follow-up and imaging. Advanced-stage lung cancer patients without evidence of disease progression after or during initial treatment were randomly assigned in a multicenter phase III trial to compare a web-mediated follow-up algorithm (experimental arm), based on weekly self-scored patient symptoms, with routine follow-up with CT scans scheduled every three to six months according to the disease stage (control arm). In the experimental arm, an alert email was automatically sent to the oncologist when self-scored symptoms matched predefined criteria. The primary outcome was OS. From June 2014 to January 2016, 133 patients were enrolled and 121 were retained in the intent-to-treat analysis; 12 deemed ineligible after random assignment were not subsequently followed. Most of the patients (95.1%) had stage III or IV disease. The median follow-up was nine months. The median OS was 19.0 months (95% confidence interval [CI] = 12.5 to noncalculable) in the experimental and 12.0 months (95% CI = 8.6 to 16.4) in the control arm (one-sided P = .001) (hazard ratio = 0.32, 95% CI = 0.15 to 0.67, one-sided P = .002). The performance status at first detected relapse was 0 to 1 for 75.9% of the patients in the experimental arm and for 32.5% of those in the control arm (two-sided P < .001). Optimal treatment was initiated in 72.4% of the patients in the experimental arm and in 32.5% of those in the control arm (two-sided P < .001). A web-mediated follow-up algorithm based on self-reported symptoms improved OS due to early relapse detection and better performance status at relapse.

12 January 2014 in Supportive Care in Cancer
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Journal Article
Closed access
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FDFabrice Denis
Fabrice Denis
LVLouise Viger
Louise Viger
ACAlexandre Charron
Alexandre Charron
EVEric Voog
Eric Voog
ODOlivier Dupuis
Olivier Dupuis
CLChristophe Letellier
Christophe Letellier

23 November 2020 in Journal of Medical Internet Research
Verified
Journal Article
Open access
SGSimon Galmiche
Simon Galmiche
EREve Rahbe
Eve Rahbe
AFArnaud Fontanet
Arnaud Fontanet
ADAurélien Dinh
Aurélien Dinh
FBFrançois Bénézit
François Bénézit
FDFabrice Denis
Fabrice Denis
Background: We developed a self-triage web application for COVID-19 symptoms, which was launched in France in March 2020, when French health authorities recommended all patients with suspected COVID-19 call an emergency phone number. Objective: Our objective was to determine if a self-triage tool could reduce the burden on emergency call centers and help predict increasing burden on hospitals. Methods: Users were asked questions about their underlying conditions, sociodemographic status, postal code, and main COVID-19 symptoms. Participants were advised to call an emergency call center if they reported dyspnea or complete loss of appetite for over 24 hours. Data on COVID-19–related calls were collected from 6 emergency call centers and data on COVID-19 hospitalizations were collected from Santé Publique France and the French Ministry of Health. We examined the change in the number of emergency calls before and after the launch of the web application. Results: From March 17 to April 2, 2020, 735,419 questionnaires were registered in the study area. Of these, 121,370 (16.5%) led to a recommendation to call an emergency center. The peak number of overall questionnaires and of questionnaires leading to a recommendation to call an emergency center were observed on March 22, 2020. In the 17 days preceding the launch of the web application, emergency call centers in the study area registered 66,925 COVID-19–related calls and local hospitals admitted 639 patients for COVID-19; the ratio of emergency calls to hospitalizations for COVID-19 was 104.7 to 1. In the 17 days following the launch of the web application, there were 82,347 emergency calls and 6009 new hospitalizations for COVID-19, a ratio of 13.7 calls to 1 hospitalization (chi-square test: P<.001). Conclusions: The self-triage web application launch was followed by a nearly 10-fold increase in COVID-19–related hospitalizations with only a 23% increase in emergency calls. The peak of questionnaire completions preceded the peak of COVID-19–related hospitalizations by 5 days. Although the design of this study does not allow us to conclude that the self-triage tool alone contributed to the alleviation of calls to the emergency call centers, it does suggest that it played a role, and may be used for predicting increasing burden on hospitals. Trial Registration: ClinicalTrials.gov NCT04331171; https://clinicaltrials.gov/ct2/show/NCT04331171

27 May 2021 in Journal of Medical Internet Research
Verified
Journal Article
Open access
FDFabrice Denis
Fabrice Denis
ASAnne-Lise Septans
Anne-Lise Septans
LPLea Periers
Lea Periers
JMJean-Michel Maillard
Jean-Michel Maillard
FLFlorian Legoff
Florian Legoff
SMSylvain Moriniere
Sylvain Moriniere
Background: Persistent olfactory dysfunction is a significant complication of SARS-CoV-2 infection. Olfactory training involving aromatic oils has been recommended to improve olfactory recovery, but quantitative data are missing. Objective: We aimed to quantify the benefit of olfactory training and visual stimulation assisted by a dedicated web application for patients who experienced olfactory dysfunction for ≥1 month. Methods: We performed an observational, real-life, data-based study on a cohort of patients who experienced at least 1 month of persistent olfactory dysfunction between January 30 and March 26, 2021. An analysis was performed after a mean olfactory training time of 4 weeks, and at least 500 patients were assessable for primary outcome assessment. Participants exposed themselves twice daily to odors from 4 high-concentration oils and visual stimulation assisted by a dedicated web application. Improvement was defined as a 2-point increase on a 10-point, self-assessed olfactory visual analogue scale. Results: In total, 548 patients were assessable for primary outcome assessment. The mean baseline, self-assessed olfactory score was 1.9 (SD 1.7), and this increased to 4.6 (SD 2.8) after a mean olfactory training time of 27.7 days (SD 17.2). Olfactory training was associated with at least a 2-point increase in 64.2% (352/548) of patients. The rate of patients’ olfactory improvement was higher for patients who trained for more than 28 days than that rate for patients who trained for less than 28 days (73.3% vs 59%; P=.002). The time to olfactory improvement was 8 days faster for patients with hyposmia compared to the time to improvement for patients with anosmia (P<.001). This benefit was observed regardless of the duration of the olfactory dysfunction. Conclusions: Olfactory training and visual stimulation assisted by a dedicated web application was associated with significant improvement in olfaction, especially after 28 days of olfactory training.

1 September 2013 in Supportive Care in Cancer
Verified
Journal Article
Closed access
PDF file
FDFabrice Denis
Fabrice Denis
LVLouise Viger
Louise Viger
ACAlexandre Charron
Alexandre Charron
EVEric Voog
Eric Voog
CLChristophe Letellier
Christophe Letellier

19 September 2011 in Radiation Oncology
Verified
Journal Article
Open access
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SDSylvain Dewas
Sylvain Dewas
Jean-Emmanuel BibaultJean-Emmanuel Bibault
Jean-Emmanuel Bibault
PBPierre Blanchard
Pierre Blanchard
CVClaire Vautravers-Dewas
Claire Vautravers-Dewas
YPYoann Pointreau
Yoann Pointreau
PGPhilippe Giraud
Philippe Giraud
As part of French residents' radiotherapy training, delineation workstations were available at a national teaching course. We report a prospective comparative study of a non small cell lung cancer (NSCLC) case delineated by 120 residents before and after a radioanatomy/radiotherapy lecture.