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  1. Article ; Online: Segmental Arterial Mediolysis and its Mimickers: A Case Report and Review of the Literature.

    Najmaoui, Marine / Pezzulo, Martina / Franchimont, Denis / Vandergheynst, Frédéric / Ilzkovitz, Maxime

    European journal of case reports in internal medicine

    2023  Volume 10, Issue 11, Page(s) 4085

    Abstract: This case report addresses segmental arterial mediolysis (SAM), a rare non-inflammatory vasculopathy. A 51-year-old man presented at the emergency department for epigastric and left upper quadrant pain. He had a history of arterial hypertension and had ... ...

    Abstract This case report addresses segmental arterial mediolysis (SAM), a rare non-inflammatory vasculopathy. A 51-year-old man presented at the emergency department for epigastric and left upper quadrant pain. He had a history of arterial hypertension and had recently received methylprednisolone for knee pain. Blood tests revealed elevated C-reactive protein levels at 40 mg/l and lactate dehydrogenase levels at 496 IU/ml. Abdominal computerized tomography showed arterial thickening, arterial dilatations, and dissections of the splenic and renal arteries, leading to organ ischemia. This case emphasizes the importance of considering SAM in cases of unexplained abdominal pain or suspected arteriopathy.
    Learning points: Segmental arterial mediolysis (SAM) is a rare and underdiagnosed vasculopathy.SAM is a challenging diagnosis and should not be confused with vasculitis.SAM has a good prognosis with spontaneous resolution in most cases.
    Language English
    Publishing date 2023-10-16
    Publishing country Italy
    Document type Journal Article
    ISSN 2284-2594
    ISSN (online) 2284-2594
    DOI 10.12890/2023_004085
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Viewpoint: Toward the Genetic Architecture of Disease Severity in Inflammatory Bowel Diseases.

    Liefferinckx, Claire / Franchimont, Denis

    Inflammatory bowel diseases

    2018  Volume 24, Issue 7, Page(s) 1428–1439

    Abstract: Inflammatory bowel disease (IBD) is characterized by uneven disease courses with various clinical outcomes. A few prognostic markers of disease severity may help stratify patients and identify those who will benefit the most from early aggressive ... ...

    Abstract Inflammatory bowel disease (IBD) is characterized by uneven disease courses with various clinical outcomes. A few prognostic markers of disease severity may help stratify patients and identify those who will benefit the most from early aggressive treatment. The concept of disease severity remains too broad and vague, mainly because the definition must embrace several disease mechanisms, mainly inflammation and fibrosis, with various rates of disease progression. The magnitude of inflammation is an obvious key driver of disease severity in IBD that ultimately influence disease behavior. Advances in the genetics underlying disease severity are currently emerging, but attempts to overlap the genetics of disease susceptibility and severity have until now been unsatisfactory, suggesting that the genetic architecture of disease severity may be distinct from the genetics of disease susceptibility. In this review, we report on the current knowledge on disease severity and on the main research venues to decipher the genetic architecture of disease severity.
    MeSH term(s) Disease Progression ; Epigenesis, Genetic ; Gene Expression ; Genetic Predisposition to Disease ; Humans ; Inflammatory Bowel Diseases/genetics ; Inflammatory Bowel Diseases/physiopathology ; Polymorphism, Single Nucleotide ; Quantitative Trait Loci
    Language English
    Publishing date 2018-05-17
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1340971-2
    ISSN 1536-4844 ; 1078-0998
    ISSN (online) 1536-4844
    ISSN 1078-0998
    DOI 10.1093/ibd/izy109
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Switching biologics used in inflammatory bowel diseases: how to deal with in practice?

    Liefferinckx, Claire / Cremer, Anneline / Franchimont, Denis

    Current opinion in pharmacology

    2020  Volume 55, Page(s) 82–89

    Abstract: Inflammatory bowel disease patients do not all respond to biological treatment since several patients will initially respond but will lose response or develop side effects over time. In such cases, a switch from one biologic to another offers a valuable ... ...

    Abstract Inflammatory bowel disease patients do not all respond to biological treatment since several patients will initially respond but will lose response or develop side effects over time. In such cases, a switch from one biologic to another offers a valuable clinical solution. This requires to evaluate both patient and drug profiles in combination with the reason(s) for switching in order to adequately select the second-line biologic. Therapeutic drug monitoring is obviously a useful tool but is currently limited to the use of anti-TNFα. In this review paper, we provide overview and guidance on switching biologics in clinical practice, with the emphasis on the motivations for switching, the selection of the second-line biologic, as well as explanations on how and when to switch.
    MeSH term(s) Biological Products/therapeutic use ; Drug Substitution ; Humans ; Inflammatory Bowel Diseases/drug therapy
    Chemical Substances Biological Products
    Language English
    Publishing date 2020-11-06
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2037057-X
    ISSN 1471-4973 ; 1471-4892
    ISSN (online) 1471-4973
    ISSN 1471-4892
    DOI 10.1016/j.coph.2020.10.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Real-world Effectiveness and Safety of Risankizumab in Patients with Moderate to Severe Multirefractory Crohn's Disease: A Belgian Multicentric Cohort Study.

    Alsoud, Dahham / Sabino, João / Franchimont, Denis / Cremer, Anneline / Busschaert, Julie / D'Heygere, François / Bossuyt, Peter / Vijverman, Anne / Vermeire, Séverine / Ferrante, Marc

    Inflammatory bowel diseases

    2024  

    Abstract: Background: As real-world data on risankizumab in patients with moderate to severe Crohn's disease (CD) are scarce, we evaluated its effectiveness and safety in multirefractory Belgian patients.: Methods: Data from consecutive adult CD patients who ... ...

    Abstract Background: As real-world data on risankizumab in patients with moderate to severe Crohn's disease (CD) are scarce, we evaluated its effectiveness and safety in multirefractory Belgian patients.
    Methods: Data from consecutive adult CD patients who started risankizumab before April 2023 were retrospectively collected at 6 Belgian centers. Clinical remission and response were defined using the 2-component patient-reported outcome. Endoscopic response was defined as a decrease in baseline Simple Endoscopic Score with ≥50%. Both effectiveness end points were evaluated at week 24 and/or 52, while surgery-free survival and safety were assessed throughout follow-up.
    Results: A total of 69 patients (56.5% female, median age 37.2 years, 85.5% exposed to ≥4 different advanced therapies and 98.6% to ustekinumab, 14 with an ostomy) were included. At week 24, 61.8% (34 of 55) and 18.2% (10 of 55) of patients without an ostomy achieved steroid-free clinical response and remission, respectively. At week 52, these numbers were 58.2% (32 of 55) and 27.3% (15 of 55), respectively. Endoscopic data were available in 32 patients, of whom 50.0% (16 of 32) reached endoscopic response within the first 52 weeks. Results in patients with an ostomy were similar (steroid-free clinical response and remission, 42.9% and 14.3%, respectively). During a median follow-up of 68.3 weeks, 18.8% (13 of 69) of patients discontinued risankizumab, and 20.3% (14 of 69) of patients underwent CD-related intestinal resections. The estimated surgery-free survival at week 52 was 75.2%. No new safety issues were observed.
    Conclusions: In this real-world cohort of multirefractory CD patients, risankizumab was effective in inducing both clinical remission and endoscopic response. Risankizumab was well tolerated with no safety issues.
    Language English
    Publishing date 2024-01-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 1340971-2
    ISSN 1536-4844 ; 1078-0998
    ISSN (online) 1536-4844
    ISSN 1078-0998
    DOI 10.1093/ibd/izad315
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Early Versus Late Use of Vedolizumab in Ulcerative Colitis: Clinical, Endoscopic, and Histological Outcomes.

    Vermeire, Séverine / Hanzel, Jurij / Löwenberg, Mark / Ferrante, Marc / Bossuyt, Peter / Hoentjen, Frank / Franchimont, Denis / Palatka, Károly / Peeters, Harald / Mookhoek, Aart / de Hertogh, Gert / Molnár, Tamás / van Moerkercke, Wouter / Lobatón, Triana / Clasquin, Esmé / Hulshoff, Melanie S / Baert, Filip / D'Haens, Geert

    Journal of Crohn's & colitis

    2023  Volume 18, Issue 4, Page(s) 540–547

    Abstract: Background and aims: We explored the potential for differential efficacy of vedolizumab between early and late ulcerative colitis [UC] with evaluation of clinical, endoscopic, and histological endpoints.: Methods: This was a multicentre, ... ...

    Abstract Background and aims: We explored the potential for differential efficacy of vedolizumab between early and late ulcerative colitis [UC] with evaluation of clinical, endoscopic, and histological endpoints.
    Methods: This was a multicentre, multinational, open-label study in patients with moderately-to-severely active UC, defining early UC by a disease duration <4 years and bio-naïve and late UC by a disease duration > 4 years and additional exposure to tumour necrosis factor antagonists. Patients received standard treatment with intravenous vedolizumab for 52 weeks [300 mg Weeks 0, 2, 6, every 8 weeks thereafter without escalation]. The primary endpoint was corticosteroid-free clinical remission with endoscopic improvement [total Mayo score ≤2 with no subscore >1] at both Weeks 26 and 52.
    Results: A total of 121 patients were included: in the "early" group, 25/59 [42.4%] achieved the primary endpoint versus 19/62 [30.6%] in the "late" group [p = 0.18]. There were no significant differences between the two groups in endoscopic improvement [Week 26: "early" 32/59 [54.2%] versus "late" 29/62 [46.8%]; p = 0.412; Week 52: 27/59 [45.8%] versus 25/62 [40.3%]; p = 0.546] or in histological remission [Robarts Histopathology Index <3 without neutrophils in the epithelium and lamina propria] [Week 26: 24/59 [40.7%] versus 21/62 [33.9%]; p = 0.439; Week 52: 22/59 [37.3%] versus 22/62 [35.5%]; p = 0.837].
    Conclusions: No significant differences in clinical, endoscopic, and histological outcomes were observed between "early" and "late" disease.
    MeSH term(s) Humans ; Colitis, Ulcerative/drug therapy ; Colitis, Ulcerative/pathology ; Antibodies, Monoclonal, Humanized/administration & dosage ; Antibodies, Monoclonal, Humanized/therapeutic use ; Female ; Male ; Adult ; Gastrointestinal Agents/administration & dosage ; Gastrointestinal Agents/therapeutic use ; Middle Aged ; Remission Induction/methods ; Treatment Outcome ; Colonoscopy ; Severity of Illness Index
    Chemical Substances vedolizumab (9RV78Q2002) ; Antibodies, Monoclonal, Humanized ; Gastrointestinal Agents
    Language English
    Publishing date 2023-11-07
    Publishing country England
    Document type Journal Article ; Multicenter Study
    ZDB-ID 2390120-2
    ISSN 1876-4479 ; 1873-9946
    ISSN (online) 1876-4479
    ISSN 1873-9946
    DOI 10.1093/ecco-jcc/jjad179
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: C-reactive protein: informative or misleading marker of Crohn's disease?

    Franchimont, Denis

    Inflammatory bowel diseases

    2001  Volume 13, Issue 4, Page(s) 501–502

    Language English
    Publishing date 2001-04-04
    Publishing country England
    Document type Comment ; Journal Article
    ZDB-ID 1340971-2
    ISSN 1536-4844 ; 1078-0998
    ISSN (online) 1536-4844
    ISSN 1078-0998
    DOI 10.1002/ibd.20123
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Predictive models assessing the response to ustekinumab highlight the value of therapeutic drug monitoring in Crohn's disease.

    Liefferinckx, Claire / Hubert, Antoine / Thomas, Debby / Bottieau, Jérémie / Minsart, Charlotte / Cremer, Anneline / Amininejad, Leila / Vallée, François / Toubeau, Jean-François / Franchimont, Denis

    Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver

    2022  Volume 55, Issue 3, Page(s) 366–372

    Abstract: Background: Despite the therapeutic efficacy of Ustekinumab (UST) in Crohn's disease (CD), loss of response (LOR) is observed over time. This study aims to evaluate the impact of the UST pharmacokinetics (PK) at induction on clinical and endoscopic ... ...

    Abstract Background: Despite the therapeutic efficacy of Ustekinumab (UST) in Crohn's disease (CD), loss of response (LOR) is observed over time. This study aims to evaluate the impact of the UST pharmacokinetics (PK) at induction on clinical and endoscopic outcomes, as well as to find predictive markers of UST response.
    Methods: This retrospective study included 80 CD patients. Pharmacokinetics data (trough levels (TLs)) combined with clinical and biological parameters were fed into tailored logistic regression and tree-based ensemble techniques to predict clinical and endoscopic outcomes at one year of follow-up.
    Results: TLs at week 16 were significantly lower among patients with moderate to severe endoscopic activity during the follow-up (p = 0.04). The best model to predict endoscopic outcome was obtained at week 16 by Random Forest with an area under the receiver operating characteristic curve of 0.92 ± 0.08, sensitivity 91% and specificity 75%, with key inputs such as lymphocyte and monocyte counts at week 8, and UST TLs and CRP at week 16.
    Conclusions: This real-world study confirms the relationship between early UST TLs and both clinical and endoscopic outcomes. Models were developed for the task of predicting clinical and endoscopic remission in CD patients treated with UST, highlighting the clinical relevance of UST TLs at week 16.
    MeSH term(s) Humans ; Ustekinumab/therapeutic use ; Crohn Disease/drug therapy ; Retrospective Studies ; Drug Monitoring ; ROC Curve ; Remission Induction ; Treatment Outcome
    Chemical Substances Ustekinumab (FU77B4U5Z0)
    Language English
    Publishing date 2022-08-14
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1459373-7
    ISSN 1878-3562 ; 1125-8055
    ISSN (online) 1878-3562
    ISSN 1125-8055
    DOI 10.1016/j.dld.2022.07.015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: La reconnaissance des bactéries de la flore intestinale: un important facteur de risque pour la maladie de Crohn.

    Villani, Alexandra-Chloé / Franchimont, Denis

    Medecine sciences : M/S

    2010  Volume 26, Issue 1, Page(s) 36–37

    Title translation Bacterial recognition of the intestinal microbial flora: an important risk factor for Crohn's disease.
    MeSH term(s) Carrier Proteins/genetics ; Carrier Proteins/physiology ; Crohn Disease/epidemiology ; Crohn Disease/genetics ; Crohn Disease/immunology ; Crohn Disease/microbiology ; Genetic Predisposition to Disease ; Host-Pathogen Interactions ; Humans ; Immunity, Mucosal/immunology ; Intestines/immunology ; Intestines/microbiology ; Models, Biological ; NLR Family, Pyrin Domain-Containing 3 Protein ; Nod2 Signaling Adaptor Protein/genetics ; Nod2 Signaling Adaptor Protein/physiology ; Receptors, Pattern Recognition/immunology ; Receptors, Pattern Recognition/physiology ; Risk Factors ; Species Specificity
    Chemical Substances Carrier Proteins ; NLR Family, Pyrin Domain-Containing 3 Protein ; NLRP3 protein, human ; NOD2 protein, human ; Nod2 Signaling Adaptor Protein ; Receptors, Pattern Recognition
    Language French
    Publishing date 2010-01
    Publishing country France
    Document type News
    ZDB-ID 632733-3
    ISSN 1958-5381 ; 0767-0974
    ISSN (online) 1958-5381
    ISSN 0767-0974
    DOI 10.1051/medsci/201026136
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  9. Article ; Online: New approach to determine the healthy immune variations by combining clustering methods.

    Liefferinckx, Claire / De Grève, Zacharie / Toubeau, Jean-François / Perée, Hélène / Quertinmont, Eric / Tafciu, Vjola / Minsart, Charlotte / Rahmouni, Souad / Georges, Michel / Vallée, François / Franchimont, Denis

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 8917

    Abstract: Immune-mediated inflammatory diseases are characterized by variability in disease presentation and severity but studying it is a challenging task. Defining the limits of a healthy immune system is therefore a prior step to capture variability in disease ... ...

    Abstract Immune-mediated inflammatory diseases are characterized by variability in disease presentation and severity but studying it is a challenging task. Defining the limits of a healthy immune system is therefore a prior step to capture variability in disease conditions. The goal of this study is to characterize the global immune cell composition along with their influencing factors. Blood samples were collected from 2 independent cohorts of respectively 389 (exploratory) and 208 (replication) healthy subjects. Twelve immune cells were measured in blood together with biological parameters. Three complementary clustering approaches were used to evaluate if variability related to the immune cells could be characterized as clusters or as a continuum. Large coefficients of variation confirmed the inter-individual variability of immune cells. Considering all subset variations in an overall analysis, it appeared that the immune makeup was organized as a continuum through the two cohorts. Some intrinsic and environmental factors affected the inter-individual variability of cells but without unveiling separable groups with similar features. This study provides a framework based on complementary clustering approach for analyzing inter-individual variability of immune cells. Our analyses support the absence of clusters in our two healthy cohorts. Also, our study reports some influence of age, gender, BMI, cortisol, season and CMV infection on immune variability.
    MeSH term(s) Adolescent ; Adult ; Aged ; Female ; Humans ; Immune System/physiology ; Male ; Middle Aged ; Models, Immunological ; Prospective Studies
    Language English
    Publishing date 2021-04-26
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Multicenter Study
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-88272-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Impact of first-line infliximab on the pharmacokinetics of second-line vedolizumab in inflammatory bowel diseases.

    Liefferinckx, Claire / Verstockt, Bram / Gils, Ann / Tops, Sophie / Van Moerkercke, Wouter / Vermeire, Severine / Franchimont, Denis

    United European gastroenterology journal

    2019  Volume 7, Issue 6, Page(s) 750–758

    Abstract: Background: Very little is known about the impact of the wash-out period on the pharmacokinetics of a second-line biologic.: Objective: The objective of this article is to explore the impact of two different wash-out periods on the pharmacokinetics ... ...

    Abstract Background: Very little is known about the impact of the wash-out period on the pharmacokinetics of a second-line biologic.
    Objective: The objective of this article is to explore the impact of two different wash-out periods on the pharmacokinetics of vedolizumab and infliximab.
    Methods: Patients switching from infliximab to vedolizumab were retrospectively identified. The population was divided into two groups according to wash-out period: <6 weeks or >6 weeks. Vedolizumab and infliximab trough levels (TLs) were determined and correlated with clinical and biological outcomes.
    Results: A total of 71 inflammatory bowel disease patients were included. At week 6, in patients previously treated with infliximab, median vedolizumab TLs were 21.9 µg/ml and 24.9 µg/ml for the <6 weeks and >6 weeks wash-out period, respectively (
    Conclusions: This study suggests clinicians may not need to be concerned about the impact of wash-out period on the pharmacokinetics of the second-line biologic when switching infliximab to vedolizumab. More data are required on the impact of wash-out period on safety.
    Language English
    Publishing date 2019-03-24
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2728585-6
    ISSN 2050-6414 ; 2050-6406
    ISSN (online) 2050-6414
    ISSN 2050-6406
    DOI 10.1177/2050640619841538
    Database MEDical Literature Analysis and Retrieval System OnLINE

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