Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Armand Abergel is active.

Publication


Featured researches published by Armand Abergel.


Journal of Hepatology | 2013

Triple therapy in treatment-experienced patients with HCV-cirrhosis in a multicentre cohort of the French Early Access Programme (ANRS CO20-CUPIC) – NCT01514890

Christophe Hézode; Hélène Fontaine; C. Dorival; Dominique Larrey; Fabien Zoulim; V. Canva; Victor de Ledinghen; T. Poynard; Didier Samuel; Marc Bourlière; Jean-Pierre Zarski; J.-J. Raabe; Laurent Alric; Patrick Marcellin; G. Riachi; Pierre-Henri Bernard; V. Loustaud-Ratti; S. Metivier; A. Tran; Lawrence Serfaty; Armand Abergel; X. Causse; Vincent Di Martino; Dominique Guyader; Damien Lucidarme; Véronique Grando-Lemaire; Patrick Hillon; Cyrille Feray; Thong Dao; Patrice Cacoub

BACKGROUND & AIMS In phase III trials, the safety profile of triple therapy (pegylated interferon/ribavirin with boceprevir or telaprevir) seems to be similar in HCV treatment-experienced cirrhotic and non-cirrhotic patients, but few cirrhotics were included. We report the week 16 safety and efficacy analysis in a cohort of compensated cirrhotics treated in the French Early Access Programme. METHODS 674 genotype 1 patients, prospectively included, received 48 weeks of triple therapy. The analysis is restricted to 497 patients reaching week 16. RESULTS A high incidence of serious adverse events (40.0%), and of death and severe complications (severe infection or hepatic decompensation) (6.4%), and a difficult management of anaemia (erythropoietin and transfusion use in 50.7% and 12.1%) were observed. Independent predictors of anaemia < 8 g/dl or blood transfusion were: female gender (OR 2.19, 95% CI 1.11-4.33, p=0.024), no lead-in phase (OR 2.25, 95% CI 1.15-4.39, p=0.018), age ≥ 65 years (OR 3.04, 95% CI 1.54-6.02, p=0.0014), haemoglobin level (≤ 12 g/dl for females, ≤ 13 g/dl for males) (OR 5.30, 95% CI 2.49-11.5, p=0.0001). Death or severe complications were related to platelets count ≤ 100,000/mm(3) (OR 3.11, 95% CI 1.30-7.41, p=0.0105) and albumin <35 g/dl (OR 6.33, 95% CI 2.66-15.07, p=0.0001), with a risk of 44.1% in patients with both. However, the on-treatment virological response was high. CONCLUSIONS The safety profile was poor and patients with platelet count ≤ 100,000/mm(3) and serum albumin <35 g/L should not be treated with the triple therapy.


Gastroenterology | 2012

Liver transplantation for hepatocellular carcinoma: a model including α-fetoprotein improves the performance of Milan criteria.

Christophe Duvoux; F. Roudot-Thoraval; Thomas Decaens; Fabienne Pessione; Hanaa M. Badran; Tullio Piardi; Claire Francoz; Philippe Compagnon; Claire Vanlemmens; Jérôme Dumortier; Sébastien Dharancy; Jean Gugenheim; Pierre-Henri Bernard; René Adam; Sylvie Radenne; Fabrice Muscari; Filomena Conti; Jean Hardwigsen; Georges-Philippe Pageaux; Olivier Chazouillères; Ephrem Salamé; Marie-Noëlle Hilleret; Pascal Lebray; Armand Abergel; Marilyne Debette-Gratien; Michael D. Kluger; Ariane Mallat; Daniel Azoulay; Daniel Cherqui

BACKGROUND & AIMS The aim of this study was to generate an improved prognostic model for predicting recurrence in liver transplant candidates with hepatocellular carcinoma (HCC). METHODS Predictors of recurrence were tested by a Cox model analysis in a training cohort of 537 patients transplanted for HCC. A prognostic score was developed and validated in a national cohort of 435 patients followed up prospectively. RESULTS α-Fetoprotein (AFP) independently predicted tumor recurrence and correlated with vascular invasion and differentiation. At a Cox score threshold of 0.7 (area under the receiver operating characteristic curve, 0.701; 95% confidence interval, 0.63-0.76; accuracy, 75.8%), a model combining log(10) AFP, tumor size, and number was highly predictive of tumor recurrence and death. By using a simplified version of the model, with untransformed AFP values, a cut-off value of 2 was identified. In the validation cohort, a score greater than 2 predicted a marked increase in 5-year risk of recurrence (50.6% ± 10.2% vs 8.8% ± 1.7%; P < .001) and decreased survival (47.5% ± 8.1% vs 67.8% ± 3.4%; P = .002) as compared with others. Among patients exceeding Milan criteria, a score of 2 or lower identified a subgroup of patients with AFP levels less than 100 ng/mL with a low 5-year risk of recurrence (14.4% ± 5.3% vs 47.6% ± 11.1%; P = .006). Among patients within Milan criteria, a score greater than 2 identified a subgroup of patients with AFP levels greater than 1000 ng/mL at high risk of recurrence (37.1% ± 8.9% vs 13.3% ± 2.0%; P < .001). Net reclassification improvement showed that predictability of the AFP model was superior to Milan criteria. CONCLUSIONS Prediction of tumor recurrence is improved significantly by a model that incorporates AFP. We propose the adoption of new selection criteria for HCC transplant candidates, taking into account AFP.


Gastroenterology | 2010

A Sustained Virologic Response Is Durable in Patients With Chronic Hepatitis C Treated With Peginterferon Alfa-2a and Ribavirin

Mark G. Swain; Ming–Yang Lai; Mitchell L. Shiffman; W. Graham E. Cooksley; Stefan Zeuzem; Douglas T. Dieterich; Armand Abergel; Mario G. Pessoa; Amy Lin; Andreas Tietz; Edward V. Connell; M. Diago

BACKGROUND & AIMS A sustained virologic response (SVR) to therapy for hepatitis C virus (HCV) infection is defined as the inability to detect HCV RNA 24 weeks after completion of treatment. Although small studies have reported that the SVR is durable and lasts for long periods, it has not been conclusively shown. METHODS The durability of treatment responses was examined in patients originally enrolled in one of 9 randomized multicenter trials (n = 1343). The study included patients who received pegylated interferon (peginterferon) alfa-2a alone (n = 166) or in combination with ribavirin (n = 1077, including 79 patients with normal alanine aminotransferase levels and 100 patients who were coinfected with human immunodeficiency virus and HCV) and whose serum samples were negative for HCV RNA (<50 IU/mL) at their final assessment. Patients were assessed annually, from the date of last treatment, for a mean of 3.9 years (range, 0.8-7.1 years). RESULTS Most patients (99.1%) who achieved an SVR had undetectable levels of HCV RNA in serum samples throughout the follow-up period. Serum samples from 0.9% of the patients contained HCV RNA a mean of 1.8 years (range, 1.1-2.9 years) after treatment ended. It is not clear if these patients were reinfected or experienced a relapse. CONCLUSIONS In a large cohort of patients monitored for the durability of an SVR, the SVR was maintained for almost 4 years after treatment with peginterferon alfa-2a alone or in combination with ribavirin. In patients with chronic hepatitis C infection, the SVR is durable and these patients should be considered as cured.


Lancet Infectious Diseases | 2015

Ledipasvir-sofosbuvir with or without ribavirin to treat patients with HCV genotype 1 infection and cirrhosis non-responsive to previous protease-inhibitor therapy: a randomised, double-blind, phase 2 trial (SIRIUS)

Marc Bourlière; Jean Pierre Bronowicki; Victor de Ledinghen; Christophe Hézode; Fabien Zoulim; Philippe Mathurin; A. Tran; Dominique Larrey; Vlad Ratziu; Laurent Alric; Robert H. Hyland; Deyuan Jiang; Brian Doehle; Phillip S. Pang; William T. Symonds; G. Mani Subramanian; John G. McHutchison; Patrick Marcellin; François Habersetzer; Dominique Guyader; Jean Didier Grange; V. Loustaud-Ratti; Lawrence Serfaty; Sophie Metivier; Vincent Leroy; Armand Abergel; Stanislas Pol

BACKGROUND Patients with cirrhosis resulting from chronic hepatitis C virus (HCV) infection are at risk of life-threatening complications, but consistently achieve lower sustained virological response (SVR) than patients without cirrhosis, especially if treatment has previously failed. We assessed the efficacy and safety of the NS5A inhibitor ledipasvir and the nucleotide polymerase inhibitor sofosbuvir, with and without ribavirin. METHODS In this multicentre, double-blind trial, between Oct 21, 2013, and Oct 30, 2014, we enrolled patients with HCV genotype 1 and compensated cirrhosis who had not achieved SVR after successive treatments with pegylated interferon and protease-inhibitor regimens at 20 sites in France. With a computer-generated randomisation sequence, patients were assigned in a 1:1 ratio to receive placebo matched in appearance to study drugs for 12 weeks followed by once daily combination fixed-dose tablets of 90 mg ledipasvir and 400 mg sofosbuvir plus weight-based ribavirin for 12 weeks, or ledipasvir-sofosbuvir plus placebo once daily for 24 weeks. The primary endpoint was SVR 12 weeks after the end of treatment (SVR12), for which 95% CIs were calculated with the Clopper-Pearson method. This study is registered with ClinicalTrials.gov, number NCT01965535. FINDINGS Of 172 patients screened, 155 entered randomisation, 77 were assigned to receive ledipasvir-sofosbuvir plus ribavirin and 78 ledipasvir-sofosbuvir. 114 (74%) were men, 151 (97%), were white, 98 (63%) had HCV genotype 1a, and 145 (94%) had non-CC IL28B alleles. SVR12 rates were 96% (95% CI 89-99) for patients in the ledipasvir-sofosbuvir plus ribavirin group and 97% (91-100) in the ledipasvir-sofosbuvir group. One patient discontinued treatment because of adverse events while receiving only placebo. The most frequent adverse events were asthenia and headache, pruritus, and fatigue. INTERPRETATION Ledipasvir-sofosbuvir plus ribavirin for 12 weeks and ledipasvir-sofosbuvir for 24 weeks provided similarly high SVR12 rates in previous non-responders with HCV genotype 1 and compensated cirrhosis. The shorter regimen, when given with ribavirin, might, therefore, be useful to treat treatment-experienced patients with cirrhosis if longer-term treatment is not possible. FUNDING Gilead Sciences.


CardioVascular and Interventional Radiology | 2003

Management of Splenic Artery Aneurysms and False Aneurysms with Endovascular Treatment in 12 Patients

R. Guillon; J.M. Garcier; Armand Abergel; R. Mofid; V. Garcia; T. Chahid; A. Ravel; Denis Pezet; L. Boyer

AbstractPurpose: To assess the endovascular treatment of splenic artery aneurysms and false aneurysms. Methods: Twelve patients (mean age 59 years, range 47–75 years) with splenic artery aneurysm (n = 10) or false aneurysm (n = 2) were treated. The lesion was asymptomatic in 11 patients; hemobilia was observed in one patient. The lesion was juxta-ostial in one case, located on the intermediate segment of the splenic artery in four, near the splenic hilus in six, and affected the whole length of the artery in one patient. In 10 cases, the maximum lesion diameter was greater than 2 cm; in one case 30% growth of an aneurysm 18 mm in diameter had occurred in 6 months; in the last case, two distal aneurysms were associated (17 and 18 mm in diameter). In one case, stent-grafting was attempted; one detachable balloon occlusion was performed; the 10 other patients were treated with coils. Results: Endovascular treatment was possible in 11 patients (92%) (one failure: stenting attempt). In four cases among 11, the initial treatment was not successful (residual perfusion of aneurysm); surgical treatment was carried out in one case, and a second embolization in two. Thus in nine cases (75%) endovascular treatment was successful: complete and persistent exclusion of the aneurysm but with spleen perfusion persisting at the end of follow-up on CT scans (mean 13 months). An early and transient elevation of pancreatic enzymes was observed in four cases. Conclusion: Ultrasound and CT have made the diagnosis of splenic artery aneurysm or false aneurysm more frequent. Endovascular treatment, the morbidity of which is low, is effective and spares the spleen.


European Journal of Gastroenterology & Hepatology | 1999

Lack of effect of propranolol in the prevention of large oesophageal varices in patients with cirrhosis: a randomized trial. French-Speaking Club for the Study of Portal Hypertension.

Paul Calès; Frédéric Oberti; Payen Jl; Naveau S; Guyader D; Blanc P; Armand Abergel; Bichard P; Raymond Jm; Canva-Delcambre; Vetter D; Dominique Valla; Beauchant M; Hadengue A; Champigneulle B; Pascal Jp; Thierry Poynard; Didier Lebrec

OBJECTIVE Beta-blockers have been shown to reduce portal pressure in patients with cirrhosis and limit the development of portosystemic shunts in portal hypertensive animals. Thus, a randomized double-blind trial was conducted to evaluate propranolol in the prevention of the development of large oesophageal varices in patients with cirrhosis without varices or with small varices. METHODS One hundred and two patients received long-acting propranolol (160 mg/day) and 104 patients received a placebo. At inclusion, there was no significant difference between the two groups in terms of clinical characteristics or biochemical tests. At 2 years, the size of varices was estimated on video recordings. RESULTS One-third of the patients were lost to follow-up, and 95%/97% of the remaining patients were compliant in the propranolol and placebo groups, respectively. At 2 years, the proportion of patients with large varices was 31% in the propranolol group and 14% in the placebo group (P< 0.05). Three and four patients bled in the propranolol and placebo groups, respectively, and nine and ten died, respectively. CONCLUSION This trial suggests that propranolol administration cannot be recommended for the prevention of the development of large oesophageal varices in patients with cirrhosis; thus other studies are needed in selected subgroups of patients.


Journal of Viral Hepatitis | 2005

Changing of hepatitis C virus genotype patterns in France at the beginning of the third millenium: The GEMHEP GenoCII Study.

C. Payan; F. Roudot-Thoraval; Patrick Marcellin; N. Bled; Gilles Duverlie; I. Fouchard-Hubert; Pascale Trimoulet; P. Couzigou; D. Cointe; C. Chaput; Cécile Henquell; Armand Abergel; Jean-Michel Pawlotsky; C. Hezode; M. Coudé; A. Blanchi; Sophie Alain; V. Loustaud-Ratti; P. Chevallier; Christian Trepo; V. Gerolami; I. Portal; Philippe Halfon; Marc Bourlière; M. Bogard; E. Plouvier; C. Laffont; G. Agius; C. Silvain; V. Brodard

Summary.  This cross‐sectional study aimed to investigate, during a short period between 2000 and 2001, in a large population of patients with chronic hepatitis C, the epidemiological characteristics of hepatitis C virus (HCV) genotypes in France. Data from 26 referral centres, corresponding to 1769 patients with chronic hepatitis C were collected consecutively during a 6‐month period. HCV genotyping in the 5′‐non‐coding region (NCR) was performed in each center using the line probe assay (LiPA, in 63% of cases), sequencing (25%) or primer‐specific polymerase chain reaction (PCR) (12%). HCV genotypes 1a, 1b, 2, 3, 4, 5, non‐subtyped 1 and mixed infection were found in 18, 27, 9, 21, 9, 3, 11 and 1% of our population, respectively. HCV genotype distribution was associated with gender, age, source and duration of infection, alanine aminotransferase (ALT) levels, cirrhosis, alcohol consumption, hepatitis B virus (HBV) and human immunodeficiency virus (HIV) coinfection. In multivariate analysis, only the source of infection was the independent factor significantly associated with genotype (P = 0.0001). In conclusion, this study shows a changing pattern of HCV genotypes in France, with i.v. drug abuse as the major risk factor, an increase of genotype 4, and to a lesser extent 1a and 5, and a decrease of genotypes 1b and 2. The modification of the HCV genotype pattern in France in the next 10 years may require new therapeutic strategies, and further survey studies.


Journal of Clinical Oncology | 2005

Randomized Controlled Trial of Tamoxifen in Advanced Hepatocellular Carcinoma

Jean-Claude Barbare; Olivier Bouché; Franck Bonnetain; Jean-Luc Raoul; Philippe Rougier; Armand Abergel; Valérie Boige; Bernard Denis; Alain Blanchi; Alexandre Pariente; Chantal Milan; Laurent Bedenne

PURPOSE Randomized studies on tamoxifen treatment of hepatocellular carcinoma (HCC) produced conflicting results. The aim of this study was to assess the efficacy of tamoxifen administration in improving overall survival of patients with advanced HCC. PATIENTS AND METHODS A total of 420 patients with HCC who were not suitable for surgery or local treatment were randomly assigned between April 1995 and May 2000: 210 in the control group and 210 in the tamoxifen group (20 mg/d orally). Patients with WHO performance status greater than 2, belonging to Child-Pugh class C, or with serum creatinine greater than 130 mumol/L were not eligible. RESULTS Tolerance was good and the main reported adverse effects were thrombophlebitis (three patients), nausea (two patients), and hot flushes (three patients). Outcome did not differ between the two treatment arms: estimated median survival was 4.8 and 4.0 months in the tamoxifen and in the control groups, respectively (P = .25). Univariate analysis showed significant association of survival with age, Okuda stage, WHO performance status, Child-Pugh class, intrahepatic tumor stage, alpha-fetoprotein serum concentration, and presence of extrahepatic spread, portal vein thrombosis, hepatomegaly, or hepatalgia. In a Cox proportional hazards model we found a significant beneficial effect of tamoxifen on survival in patients belonging to Okuda I or II stages. CONCLUSION In this large study, tamoxifen did not improve the survival of patients with advanced HCC, but there is a suggestion that patients without major hepatic insufficiency seem to have some survival benefit. New trials involving this specific population are warranted.


Hepatology | 2007

Diagnostic accuracy of the Multistix 8 SG reagent strip in diagnosis of spontaneous bacterial peritonitis

Jean-Baptiste Nousbaum; Jean-François Cadranel; Pierre Nahon; Eric Nguyen Khac; Richard Moreau; Thierry Thevenot; C. Silvain; Christophe Bureau; Olivier Nouel; Christophe Pilette; Thierry Paupard; Geoffroy Vanbiervliet; Frédéric Oberti; Thierry Davion; Vincent Jouannaud; Bruno Roche; Pierre-Henri Bernard; Sandrine Beaulieu; Odile Danne; Dominique Thabut; Carinne Chagneau‐Derrode; Victor de Ledinghen; Philippe Mathurin; Arnaud Pauwels; Jean-Pierre Bronowicki; François Habersetzer; Armand Abergel; Jean‐Christian Audigier; Thierry Sapey; Jean‐Didier Grangé

Recent studies have shown that the diagnosis of spontaneous bacterial peritonitis (SBP) can be rapidly obtained using leukocyte esterase reagent strips. However, published studies were restricted to one or two centers, and the number of patients with SBP was thus limited. The aims of the current prospective multicenter study were: (1) to assess the diagnostic accuracy of the Multistix 8SG urine test for the diagnosis of SBP; and (2) to assess the prevalence of SBP. From January to May 2004, 2 reactive strips were tested independently in inpatients with cirrhosis and in outpatients undergoing paracentesis. Cultures of ascitic fluid were performed at the bedside using aerobic and anaerobic blood culture bottles. Two thousand one hundred twenty‐three paracenteses were performed in 1,041 patients from 70 centers. One hundred seventeen samples, obtained from 91 patients, had ascites polymorphonuclear cell (PMN) counts ≥250/μl (range, 250–34,000), among which 56 were associated with positive ascitic fluid cultures. The prevalence of SBP was 5.5% in the whole population, 9% in inpatients, and 1.3% in outpatients (P < 0.0001). The prevalence of SBP was 0.57% in asymptomatic outpatients versus 2.4% in symptomatic outpatients (P = 0.04). Using a threshold of 2+ for positivity of the reagent strip, sensitivity was 45.3% for the diagnosis of SBP, specificity was 99.2%, positive predictive value was 77.9%, and negative predictive value was 96.9%. Conclusion: This study confirms the low prevalence of SBP in asymptomatic outpatients according to a priori defined criteria, and indicates an absence of diagnostic efficacy for this specific strip test. (HEPATOLOGY 2007;45:1275–1281.)


Journal of Hepatology | 2009

Iron absorption in dysmetabolic iron overload syndrome is decreased and correlates with increased plasma hepcidin

Marc Ruivard; Fabrice Lainé; Tomas Ganz; Gordana Olbina; Mark Westerman; Elizabeta Nemeth; Mathieu Rambeau; André Mazur; Laurent Gerbaud; Valérie Tournilhac; Armand Abergel; P. Philippe; Yves Deugnier; Charles Coudray

BACKGROUND/AIMS The dysmetabolic iron overload syndrome (DIOS) is a common disorder but its origin remains unclear. METHODS A case-control study was conducted to compare intestinal absorption of iron in 16 men with DIOS (age 53 +/- 11 years, serum ferritin 750 +/- 372 microg/l, hepatic iron 78 +/- 25 micromol/g) and in 32 age-matched controls with normal body iron stores (16 overweight subjects and 16 lean subjects). Intestinal absorption was calculated as the area under the curve (AUC) of 58Fe administered orally and correlated with plasma hepcidin and with insulin resistance parameters including HOMA. RESULTS Intestinal iron absorption was lower in DIOS (AUC = 22.4 +/- 15.9 microg/l/h) compared to both overweight controls (AUC = 40.5 +/- 29.4 microg/l/h, p=0.04) and to lean controls (AUC = 102.5 +/- 113.5 microg/l/h, p < 0.01). There was an inverse correlation between intestinal iron absorption and plasma hepcidin (r = -0.61, p < 0.001), HOMA (r = -0.35, p = 0.01) and C reactive protein (r = -0.52, p < 0.001). CONCLUSIONS In overweight subjects with normal iron stores, iron absorption is decreased through hepcidin upregulation. In patients with DIOS, this decrease is more pronounced due to an additional effect of iron excess on circulating hepcidin levels.

Collaboration


Dive into the Armand Abergel's collaboration.

Top Co-Authors

Avatar

Stanislas Pol

Necker-Enfants Malades Hospital

View shared research outputs
Top Co-Authors

Avatar

Laurent Poincloux

Centre national de la recherche scientifique

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Albert Tran

University of Nice Sophia Antipolis

View shared research outputs
Top Co-Authors

Avatar

Cécile Henquell

Centre national de la recherche scientifique

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge