Publications by authors named "Christine Biron-Andreani"
Background: Although heritability of venous thromboembolism (VTE) is high, the thrombophilia screening appears to be positive only in a minority of VTE patients. Adding rare variants screening to identify VTE missing heritability still requires further assessment.
Objective: We report the results of a panel strategy after 3 years of application.
Objectives: To assess the real-world efficacy and safety of recombinant factor IX albumin fusion protein (rIX-FP) in patients with hemophilia B (HB) in France.
Methods: Data on dosing frequency, weekly consumption, and bleeds before-and-after switching to rIX-FP, were collected from December 2021 to February 2024. Annualized (spontaneous) bleeding rates [A(s)BRs] were calculated only in patients on prophylaxis with a follow-up ≥ 6 months.
Objectives: The 24-month, prospective, non-interventional, European multicenter A-SURE study evaluated the real-world effectiveness of prophylaxis using an extended half-life recombinant factor VIII (FVIII) Fc fusion protein, efmoroctocog alfa (hereinafter rFVIIIFc), compared with prophylaxis using standard half-life (SHL) FVIII products in patients with hemophilia A.
Methods: Primary endpoints were annualized bleeding rate (ABR), annualized injection frequency, and annualized factor consumption. A comparative study design unique for an observational hemophilia study was implemented to reduce potential confounding in effectiveness estimates, wherein each patient prescribed rFVIIIFc was matched with one receiving SHL FVIII.
Article Synopsis
- Predicting bleeding risk in carriers of hemophilia A and B is complex, and the study aims to analyze the bleeding phenotype using the standardized Tosetto bleeding score (BS).
- The study found no significant differences in median bleeding scores or abnormal scores between hemophilia A carriers (HAC) and hemophilia B carriers (HBC), but noted a higher risk of factor deficiency in HBC.
- Significant findings include that specific factor activity thresholds were good predictors of bleeding risk in HBC, while no reliable threshold for FVIII:C levels was identified for HAC due to variability.
Article Synopsis
- The study looked at how personal and family bleeding history helps find hereditary bleeding disorders (HBD) in kids before they have surgeries or other medical procedures.
- Out of 117 kids studied, about half were found to have HBD, and the presence of gum bleeding was a key sign in many of these cases.
- The researchers found that including gum bleeding in a score called HEMSTOP makes it better at identifying HBD, but more research is needed to confirm these results.
Article Synopsis
- * Repeated joint bleedings can lead to hemophilic arthropathy (HA), which causes chronic pain and joint damage similar to rheumatoid and osteoarthritis, primarily due to inflammation and cell damage.
- * The review discusses new treatments for HA, particularly the use of mesenchymal stromal cells (MSCs), highlighting studies that explore their effects on inflammation and cartilage damage while also addressing their potential for factor replacement.
Surgery in rare bleeding disorders: the prospective MARACHI study.
Res Pract Thromb Haemost
October 2023
Article Synopsis
- Bleeding risk assessment before surgery in patients with rare inherited bleeding disorders is complex, despite established bleeding scores and clotting factor measurements.
- A study involving 178 patients with low coagulation levels analyzed how hemostasis experts managed bleeding risks during 207 surgical procedures and the resulting bleeding outcomes.
- Results showed that most surgeries were performed without factor replacement, particularly in mild deficiencies, and indicated that factor levels and the type of surgery are more critical for deciding perioperative treatment than bleeding scores.
Hemophilia is a rare congenital bleeding disorder caused by deficiency in coagulation factors VIII or IX, which is treated with prophylactic clotting factor concentrates. Nevertheless despite prophylaxis, spontaneous joint bleedings or hemarthroses still occur. The recurrent hemarthroses lead to progressive degradation of the joints and severe hemophilic arthropathy (HA) in patients with moderate and even mild forms of the disease.
View Article and Find Full Text PDFIntroduction: Dominant-negative effects have been described for 10 F11 variants in the literature.
Aim: The current study aimed at identifying putative dominant-negative F11 variants.
Material And Methods: This research consisted in a retrospective analysis of routine laboratory data.
Background: Women with hereditary fibrinogen disorders (HFDs) seem to be at an increased risk of adverse obstetrical outcomes, but epidemiologic data are limited.
Objectives: We aimed to determine the prevalence of pregnancy complications; the modalities and management of delivery; and the postpartum events in women with hypofibrinogenemia, dysfibrinogenemia, and hypodysfibrinogenemia.
Methods: We conducted a retrospective and prospective multicentric international study.
Background: rVIII-SingleChain is a recombinant factor VIII (FVIII) with increased binding affinity to von Willebrand factor compared with other FVIII products. rVIII-SingleChain is indicated for the treatment and prevention of bleeding episodes in patients with hemophilia A.
Objectives: To collect real-world evidence data from patients treated with rVIII-SingleChain to confirm the efficacy and safety established in the clinical trial program and carry out a population pharmacokinetic (PK) analysis.
Introduction: The rare coagulation disorders may present significant difficulties in diagnosis and management. In addition, considerable inter-individual variation in bleeding phenotype is observed amongst affected individuals, making the bleeding risk difficult to assess in affected individuals. The last international recommendations on rare inherited bleeding disorders (RIBDs) were published by the United Kingdom Haemophilia Centre Doctors' Organisation in 2014.
View Article and Find Full Text PDFIntroduction: Health of people with severe haemophilia (PwSH) improves thanks to the advancements in haemophilia care, giving them more opportunities in occupational integration. However, there is little literature on the occupational integration of PwSH.
Objectives: The main objective of our study was to assess the occupational integration of PwSH and to compare it with that of the general population.
Background: Data are limited on prostate cancer (PC) management in patients with haemophilia (PWH).
Aim: To describe PC screening and diagnosis, treatment modalities and bleeding complications in a group of unselected PWH followed at French Haemophilia Treatment Centres (HTCs) PATIENTS AND METHODS: PC screening, management and bleeding complications were retrospectively investigated at 14 French HTCs between 2003 and 2018.
Results: Among> 1549 > 50-year-old PWHs, 73 (4.
Article Synopsis
- Idiopathic purpura fulminans (IPF) is a rare and serious blood clotting disorder linked to infections like chickenpox and HHV-6, resulting in a drop in protein S levels due to autoantibodies.* -
- In a study from 13 French pediatric centers, 18 patients were directly observed, with an additional 34 cases reviewed from literature, showing a median age of 4.9 years and a 7-day delay in diagnosis after initial viral symptoms.* -
- The majority of patients (94%) had lesions on their lower limbs, with 78% having recent chickenpox infections; treatments primarily included heparin and plasma transfusions, and a call for a global
Background: Despite a high prevalence of angiodysplasia, no specific guidelines are available for the modalities of endoscopic exploration of gastrointestinal (GI) bleeding in von Willebrand disease (VWD). Whether VWD patients could benefit from video capsule endoscopy (VCE) looking for angiodysplasia eligible to endoscopic treatment or at high risk of bleeding is unknown.
Objectives: To assess the diagnostic efficacy for angiodysplasia and the prognostic value of VCE on top of conventional endoscopy in VWD patients with GI bleeding.
We report the case of a 48-year-old man followed since 2013 for primary antiphospholipid syndrome (APLS) revealed by venous thromboembolism in the presence of antiphospholipid antibodies (APL-Abs, anticardiolipin and anti-β-2-glycoprotein-1), who decompensated in the course of coronavirus disease (COVID-19). Despite efficient anticoagulation, he suffered bilateral adrenal glands hemorrhage and limb arterial ischemia. The tropism of severe acute respiratory syndrome coronavirus-2 for endothelium can lead to microangiopathy and increased risk for thrombosis.
View Article and Find Full Text PDFHemophilia A and B are X-linked recessive disorders caused by the deficiency of factor VIII or factor IX, respectively. Bleeding episodes are treated with factor replacement therapy. The most serious complication of this treatment is the development of inhibitors.
View Article and Find Full Text PDFDeterminants of adherence and consequences of the transition from adolescence to adulthood among young people with severe haemophilia (TRANSHEMO): study protocol for a multicentric French national observational cross-sectional study.
BMJ Open
July 2018
Introduction: Severe haemophilia is a rare disease characterised by spontaneous bleeding from early childhood, which may lead to various complications, especially in joints. It is nowadays possible to avoid these complications thanks to substitutive therapies for which the issue of adherence is major. The transition from adolescence to adulthood in young people with severe haemophilia is a critical period as it is associated with a high risk of lack of adherence to healthcare, which might have serious consequences on daily activities and on quality of life.
View Article and Find Full Text PDFIntroduction: The aim of this study was to collect data in France in patients with heparin-induced thrombocytopenia who required parenteral anticoagulation and for whom other non-heparin anticoagulant therapies were contraindicated including patients with renal failure, cross-reactivity to danaparoid or at high hemorrhagic risk.
Methods: A total of 20 patients, of mean age 72 ± 10 years, were enrolled in this open-label, multicenter clinical study. Exploratory statistical data analysis was performed with descriptive interpretation of intra-individual comparisons using simple univariate statistics.