christos chouaid

Prof. christos chouaid

University paris est
+1
orcid

Research Focus & Metrics

Academic Career Length

36Years (1991-Present)

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

Representative Publications

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1 March 2015 in The Lancet Oncology
Verified
Journal Article
Closed access
NRNaiyer A Rizvi
Naiyer A Rizvi
JMJulien Mazieres
Julien Mazieres
DPDavid Planchard
David Planchard
TSThomas E Stinchcombe
Thomas E Stinchcombe
GDGrace K Dy
Grace K Dy
SRSuresh S Ramalingam
Suresh S Ramalingam

1 June 2013 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
JMJulien Mazieres
Julien Mazieres
SPSolange Peters
Solange Peters
BLBenoit Lepage
Benoit Lepage
ACAlexis B. Cortot
Alexis B. Cortot
FBFabrice Barlesi
Fabrice Barlesi
OGOliver Gautschi
Oliver Gautschi
Purpose: HER2 mutations are identified in approximately 2%of non–small-cell lung cancers (NSCLC). There are few data available that describe the clinical course of patients with HER2-mutated NSCLC. Patients and Methods: We retrospectively identified 65 NSCLC, diagnosed with a HER2 in-frame insertion in exon 20. We collected clinicopathologic characteristics, patients' outcomes, and treatments. Results: HER2 mutation was identified in 65 (1.7%) of 3,800 patients tested and was almost an exclusive driver, except for one single case with a concomitant KRAS mutation. Our population presented with a median age of 60 years (range, 31 to 86 years), a high proportion of women (45 women v 20 men; 69%), and a high proportion of never-smokers (n= 34; 52.3%). All tumors were adenocarcinomas and 50% were stage IV at diagnosis. For these latter cases, 22 anti–human epidermal growth factor receptor 2 (HER2) treatments were administered after conventional chemotherapy in 16 patients. Subsequently, four patients experienced progressive disease, seven experienced disease stabilizations, and 11 experienced partial responses (overall response rate, 50%; disease control rate [DCR], 82%). Specifically, we observed a DCR of 93% for trastuzumab-based therapies (n = 15) and a DCR of 100% for afatinib (n = 3) but no response to other HER2-targeted drugs (n = 3). Progression-free survival for patients with HER2 therapies was 5.1 months. Median survival was of 89.6 and 22.9 months for early-stage and stage IV patients, respectively. Conclusion: This study, the largest to date dedicated to HER2-mutated NSCLC, reinforces the importance of screening for HER2 mutations in lung adenocarcinomas and suggests the potential efficacy of HER2-targeted drugs in this population.

1 April 2018 in The Lancet Oncology
Verified
Journal Article
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MGMarina C. Garassino
Marina C. Garassino
BCByoung Chul Cho
Byoung Chul Cho
JKJoo-Hang Kim
Joo-Hang Kim
JMJulien Mazières
Julien Mazières
JVJohan Vansteenkiste
Johan Vansteenkiste
ZSZsuzsanna Szalai
Zsuzsanna Szalai

1 May 2016 in Journal of Clinical Oncology
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Journal Article
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RCRomain Corre
Romain Corre
LGLaurent Greillier
Laurent Greillier
HCHervé Le Caër
Hervé Le Caër
CAClarisse Audigier-Valette
Clarisse Audigier-Valette
NBNathalie Baize
Nathalie Baize
CCchristos chouaid
christos chouaid
Purpose Comprehensive geriatric assessment (CGA) is recommended to assess the vulnerability of elderly patients, but its integration in cancer treatment decision making has never been prospectively evaluated. Here, in elderly patients with advanced non–small-cell lung cancer (NSCLC), we compared a standard strategy of chemotherapy allocation on the basis of performance status (PS) and age with an experimental strategy on the basis of CGA. Patients and Methods In a multicenter, open-label, phase III trial, elderly patients ≥ 70 years old with a PS of 0 to 2 and stage IV NSCLC were randomly assigned between chemotherapy allocation on the basis of PS and age (standard arm: carboplatin-based doublet if PS ≤ 1 and age ≤ 75 years; docetaxel if PS = 2 or age > 75 years) and treatment allocation on the basis of CGA (CGA arm: carboplatin-based doublet for fit patients, docetaxel for vulnerable patients, and best supportive care for frail patients). The primary end point was treatment failure free survival (TFFS). Secondary end points were overall survival (OS), progression-free survival, tolerability, and quality of life. Results Four hundred ninety-four patients were randomly assigned (standard arm, n = 251; CGA arm, n = 243). Median age was 77 years. In the standard and CGA arms, 35.1% and 45.7% of patients received a carboplatin-based doublet, 64.9% and 31.3% received docetaxel, and 0% and 23.0% received best supportive care, respectively. In the standard and CGA arms, median TFFS times were 3.2 and 3.1 months, respectively (hazard ratio, 0.91; 95% CI, 0.76 to 1.1), and median OS times were 6.4 and 6.1 months, respectively (hazard ratio, 0.92; 95% CI, 0.79 to 1.1). Patients in the CGA arm, compared with standard arm patients, experienced significantly less all grade toxicity (85.6% v 93.4%, respectively P = .015) and fewer treatment failures as a result of toxicity (4.8% v 11.8%, respectively; P = .007). Conclusion In elderly patients with advanced NSCLC, treatment allocation on the basis of CGA failed to improve the TFFS or OS but slightly reduced treatment toxicity.

1 April 2009 in American Journal of Respiratory and Critical Care Medicine
Verified
Journal Article
Closed access
LSLaurent Savale
Laurent Savale
ACAri Chaouat
Ari Chaouat
SBSylvie Bastuji-Garin
Sylvie Bastuji-Garin
EMElisabeth Marcos
Elisabeth Marcos
LBLaurent Boyer
Laurent Boyer
SASerge Adnot
Serge Adnot
Rationale: Telomere length is considered a marker for biological aging. Chronic obstructive pulmonary disease (COPD) may be associated with premature aging. Objectives: To test the hypothesis that patients with COPD experience accelerated telomere shortening and that inflammation is linked to this process. Methods: We measured telomere length, using a quantitative polymerase chain reaction–based method, and plasma levels of various cytokines in 136 patients with COPD, 113 age- and sex-matched smokers, and 42 nonsmokers with normal lung function. Measurements and Main Results: Median (range) telomere length ratio was significantly lower in patients with COPD (0.57 [0.23–1.18]) than in control smokers (0.79 [0.34–1.58]) or nonsmokers (0.85 [0.38–1.55]) (P < 0.001). The difference remained highly significant when using logistic regression analysis adjusted for age, sex, and tobacco exposure. Both females and males with COPD had shorter telomere length than same-sex control subjects. Telomere length was related to age in patients and control subjects but was shorter in patients than in control subjects in all age groups. No relationship was found between telomere length and tobacco exposure in patients or control subjects, with no difference between control smokers and nonsmokers. In patients with COPD, telomere length was related to PaO2 (P < 0.001) and PaCO2 (P < 0.001) but not to lung function parameters or the BODE Index. Patients with COPD also had elevated plasma levels of various cytokines, interleukin-6 correlating negatively with telomere length (P < 0.001). Conclusions: Given that in vivo telomere length reflects cellular turnover and exposure to oxidative and inflammatory damage, our data support accelerated aging in COPD.

1 June 2018 in Journal of Thoracic Disease
Verified
Journal Article
Closed access
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JNJean-Marc Naccache
Jean-Marc Naccache
QGQuentin Gibiot
Quentin Gibiot
IMIsabelle Monnet
Isabelle Monnet
MAMartine Antoine
Martine Antoine
MWMarie Wislez
Marie Wislez
JCJacques Cadranel
Jacques Cadranel
The association between lung cancer (LC) and interstitial lung disease (ILD) can be explained by the shared risk factors like smoking and physiopathology of fibrogenesis and cancerogenesis. The relative LC risk is shown to be 3.5- to 7.3-times higher in ILD, with LC occurrence estimated at 10–20% in ILD, with >15% of ILD patients likely to die from LC. ILD incidence upon LC diagnosis varied from 2.4–10.9%. Primary radiological presentations consist of peripheral lesions, mostly in the inferior pulmonary lobes, either close to or within the ILD areas. There is a trend towards inverted proportion of adenocarcinomas and squamous-cell carcinomas, with EGFR mutations very rarely found. ILD negatively impacted LC prognosis, with surgery associated with increased morbidity-mortality, particularly due to acute exacerbation (AE) of ILD. Limited resection reduced this risk, whilst increasing that of cancer mortality. Studies on radiotherapy that can induce AE-ILD are scarce. Chemotherapy was associated with similar response rates to those in LC patients without ILD, yet worse survival. This difference may be accounted for by ILD patients’ poorer health and higher risk of drug-induced pneumonitis. Further studies are warranted to better understand cancer physiopathology within the fibrotic areas, along with the therapeutic strategies required.