Isabelle APHP

Prof. Dr. Isabelle APHP

AP-HP, Department of Public Health, Henri Mondor Hospital, 94000 Creteil, France
orcid

Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

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

Representative Publications

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8 February 2017 in Hepatology
Verified
Journal Article
Open access
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BCBenjamin Cadier
Benjamin Cadier
JBJulie Bulsei
Julie Bulsei
PNPierre Nahon
Pierre Nahon
OSOlivier Seror
Olivier Seror
ALAlexis Laurent
Alexis Laurent
TGthe ANRS CO12 CirVir and CHANGH groups
the ANRS CO12 CirVir and CHANGH groups
Hepatocellular carcinoma (HCC) is the leading cause of death in patients with cirrhosis. Patients outside clinical trials seldom benefit from evidence‐based monitoring. The objective of this study was to estimate the cost‐effectiveness of complying with HCC screening guidelines. The economic evaluation compared surveillance of patients with cirrhosis as recommended by the guidelines (“gold‐standard monitoring”) to “real‐life monitoring” from the health care system perspective. A Markov model described the history of the disease and treatment course including current first‐line curative treatment: liver resection, radiofrequency ablation (RFA), and liver transplantation. Transition probabilities were derived mainly from two French cohorts, CIRVIR and CHANGH. Costs were computed using French and U.S. tariffs. Effectiveness was measured in life years gained (LYG). An incremental cost‐effectiveness ratio (ICER) was calculated for a 10‐year horizon and tested with one‐way and probabilistic sensitivity analyses. The cost difference between the two groups was $648 ($87,476 in the gold‐standard monitoring group vs. $86,829 in the real‐life monitoring group) in France and $11,965 ($93,795 vs. $81,829) in the United States. Survival increased by 0.37 years (7.18 vs. 6.81 years). The ICER was $1,754 per LYG in France and $32,415 per LYG in the United States. The health gain resulted from earlier diagnosis and access to first‐line curative treatments, among which RFA provided the best value for money. Conclusion: Our results indicate that gold‐standard monitoring for patients with cirrhosis is cost‐effective, attributed to a higher probability of benefiting from a curative treatment and so a higher survival probability. (Hepatology 2017;65:1237‐1248)

25 March 2020 in European Heart Journal
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Journal Article
Open access
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FMFelix Mahfoud
Felix Mahfoud
MAMichel Azizi
Michel Azizi
SESebastian Ewen
Sebastian Ewen
APAtul Pathak
Atul Pathak
CUChristian Ukena
Christian Ukena
WWWilliam Wijns
William Wijns
Device-based hypertension treatment is a complementary and possibly alternative approach to conventional lifestyle changes combined with antihypertensive medications to achieve and maintain optimal blood pressure (BP) control. A series of clinical trials assessing novel technologies are currently ongoing for device-based hypertension treatment, including endovascular catheter-based renal denervation (RDN), baroreceptor activation therapy, endovascular baroreflex amplification, and cardiac pacemaker-mediated hypertension treatment.

1 December 2022 in JCO Precision Oncology
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Journal Article
Open access
ECEdwin Cuppen
Edwin Cuppen
OEOlivier Elemento
Olivier Elemento
RBRichard Rosenquist Brandell
Richard Rosenquist Brandell
SNSvetlana Nikic
Svetlana Nikic
MIMaarten Ijzerman
Maarten Ijzerman
VJVaidehi Jobanputra
Vaidehi Jobanputra
PURPOSE: The combination of whole-genome and transcriptome sequencing (WGTS) is expected to transform diagnosis and treatment for patients with cancer. WGTS is a comprehensive precision diagnostic test that is starting to replace the standard of care for oncology molecular testing in health care systems around the world; however, the implementation and widescale adoption of this best-in-class testing is lacking. METHODS: Here, we address the barriers in integrating WGTS for cancer diagnostics and treatment selection and answer questions regarding utility in different cancer types, cost-effectiveness and affordability, and other practical considerations for WGTS implementation. RESULTS: We review the current studies implementing WGTS in health care systems and provide a synopsis of the clinical evidence and insights into practical considerations for WGTS implementation. We reflect on regulatory, costs, reimbursement, and incidental findings aspects of this test. CONCLUSION: WGTS is an appropriate comprehensive clinical test for many tumor types and can replace multiple, cascade testing approaches currently performed. Decreasing sequencing cost, increasing number of clinically relevant aberrations and discovery of more complex biomarkers of treatment response, should pave the way for health care systems and laboratories in implementing WGTS into clinical practice, to transform diagnosis and treatment for patients with cancer.

5 March 2021 in Health Economics, Policy and Law
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Journal Article
Closed access
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ZOZeynep Or
Zeynep Or
CGCoralie Gandré
Coralie Gandré
IAIsabelle APHP
Isabelle APHP
MSMonika Steffen
Monika Steffen
France is one of the European countries hardest hit by the Covid-19 pandemic. The pandemic brought into light structural weaknesses of the health system, including its governance and decision-making process, but also provoked changes that helped to improve its resilience. We analyse the French experience of Covid-19 in 2020 by critically reviewing major policy measures implemented during the first two waves of the pandemic. France has struggled to find the right balance between the rock of economic and social damage caused by containment measures and the hard alternative of a rapidly spreading pandemic. The response to the first wave, including a full lock-down, was an emergency response that revealed the low level of preparedness for pandemics and the overly hospital-centred provision of health care in France. During the second wave, this response evolved into a more level strategy trying to reconcile health needs in a broader perspective integrating socio-economic considerations, but without fully managing to put in place an effective health strategy. We conclude that to achieve the right balance, France will have to strengthen health system capacity and improve the cooperation between actors at central and local levels with greater participatory decision-making that takes into account local-level realities and the diversity of needs.

1 April 2017 in American Journal of Respiratory and Critical Care Medicine
Verified
Journal Article
Closed access
PJPhilippe Jolliet
Philippe Jolliet
LOLamia Ouanes-Besbes
Lamia Ouanes-Besbes
FAFekri Abroug
Fekri Abroug
JKJalila Ben Khelil
Jalila Ben Khelil
MBMohamed Besbes
Mohamed Besbes
OEOn Behalf Of The E.C.H.O.Icu
On Behalf Of The E.C.H.O.Icu
Rationale: During noninvasive ventilation (NIV) for chronic obstructive pulmonary disease (COPD) exacerbations, helium/oxygen (heliox) reduces the work of breathing and hypercapnia more than air/O2, but its impact on clinical outcomes remains unknown. Objectives: To determine whether continuous administration of heliox for 72 hours, during and in-between NIV sessions, was superior to air/O2 in reducing NIV failure (25–15%) in severe hypercapnic COPD exacerbations. Methods: This was a prospective, randomized, open-label trial in 16 intensive care units (ICUs) and 6 countries. Inclusion criteria were COPD exacerbations with PaCO2 ≥ 45 mm Hg, pH ≤ 7.35, and at least one of the following: respiratory rate ≥ 25/min, PaO2 ≤ 50 mm Hg, and oxygen saturation (arterial [SaO2] or measured by pulse oximetry [SpO2]) ≤ 90%. A 6-month follow-up was performed. Measurements and Main Results: The primary endpoint was NIV failure (intubation or death without intubation in the ICU). The secondary endpoints were physiological parameters, duration of ventilation, duration of ICU and hospital stay, 6-month recurrence, and rehospitalization rates. The trial was stopped prematurely (445 randomized patients) because of a low global failure rate (NIV failure: air/O2 14.5% [n = 32]; heliox 14.7% [n = 33]; P = 0.97, and time to NIV failure: heliox group 93 hours [n = 33], air/O2 group 52 hours [n = 32]; P = 0.12). Respiratory rate, pH, PaCO2, and encephalopathy score improved significantly faster with heliox. ICU stay was comparable between the groups. In patients intubated after NIV failed, patients on heliox had a shorter ventilation duration (7.4 ± 7.6 d vs. 13.6 ± 12.6 d; P = 0.02) and a shorter ICU stay (15.8 ± 10.9 d vs. 26.7 ± 21.0 d; P = 0.01). No difference was observed in ICU and 6-month mortality. Conclusions: Heliox improves respiratory acidosis, encephalopathy, and the respiratory rate more quickly than air/O2 but does not prevent NIV failure. Overall, the rate of NIV failure was low. Clinical trial registered with www.clinicaltrials.gov (NCT 01155310).

5 December 2017 in BMC Infectious Diseases
Verified
Journal Article
Open access
PDF file
CRChristine Robin
Christine Robin
FHFrançois Hémery
François Hémery
CDChristel Dindorf
Christel Dindorf
JTJulien Thillard
Julien Thillard
LCLudovic Cabanne
Ludovic Cabanne
CCCatherine Cordonnier
Catherine Cordonnier
Cytomegalovirus (CMV) infection and disease (CMV episodes) are global concerns after allogeneic hematopoietic stem cell transplantation (HSCT). They affect survival, both by direct and indirect effects. Due to safety issues of current anti-CMV antivirals, long-term CMV prophylaxis is poorly tolerated and the most common strategy to decrease the incidence of CMV disease is preemptive. New, less toxic, molecules are currently being assessed for CMV prophylaxis which should replace or considerably decrease the preemptive approach. The aim of this study was to assess the economic burden of CMV episodes after HSCT with a preemptive approach. We analyzed data from 208 consecutive adults transplanted in our institution, between 2008 and 2013. Hospital resource utilization was retrieved via the linked hospital admissions and Diagnostic Related Groups for the period of conditioning to 12 months after transplant. CMV episodes occurred in 70 patients (34%) over the first 12 months following HSCT, after a mean of 75 days (median: 46 (7–334)). The mean total length of stay was significantly associated with the occurrence of a CMV episode (113.9 vs. 87.5 days, p = 0.0002) but was associated neither with the pre-transplant CMV serology of donors/recipients nor with survival. The mean cost of transplant was €104,016 (SD = €37,281) after 12 months. Bivariate and multivariate analyses indicated that the occurrence of >1 CMV episode increased the costs of allogeneic HSCT by 25–30% (p < 0.0001). Our study, which is the largest, single-institution cost study of allogeneic HSCT in Europe, shows that two or more CMV episodes significantly increased the transplant cost. New prophylactic strategies to prevent CMV infection and disease should decrease transplant costs.