View clinical trials related to Neutropenia.
Filter by:The investigators hypothesized that in terms of granulocyte colony-stimulating factor (G-CSF) administration, the route of continuous infusion would lead to a faster neutrophil recovery compared to that of bolus administration
White lineage abnormalities and in particular neutropenia and agranulocytosis are known and increasingly studied adverse effects of antipsychotics, particularly second generation. White lineage abnormalities have been found with each of the drugs in this class even if progression to agranulocytosis is rarer with drugs other than Clozapine. The infections, sometimes serious, induced by these adverse effects have largely led to limiting the use of second generation antipsychotics, and in particular clozapine, to the treatment of patients resistant to other first or second line treatments. Several hypotheses have been put forward: the first is that of an immuno-allergic reaction mediated by eosinophils with increased sensitivity depending on the HLA type, another that of a direct toxic effect of clozapine or its main metabolite, N -demethylclozapine and a third attributes hematological disorders to catecholaminergic inhibition which prevents the differentiation of CD34+ hematopoietic stem cells into leukocytes, after blocking dopaminergic and/or beta-adrenergic receptors. More recently, a new hypothesis is emerging following scandals particularly in France linked to Benfluorex (Mediator®), Dexfenfluramine (Isomeride®) and Fenfluramine (Pondéral®). Indeed, by studying the cellular mechanisms linked to the stimulation of the 5-HT2B receptor by their common metabolite Nordexfenfluramine, researchers from the NeuroCardiovascular pharmacology and toxicology laboratory in Strasbourg have demonstrated that the stimulation of 5-HT2BR mobilizes CD34+ cells in blood from the bone marrow and selective blocking of 5-HT2B receptors, reduces the number of leukocytes in the blood, mainly neutrophils and lymphocytes, further decreasing their blood concentration with exposure time.
Patients who experienced neutropenia after receiving pegfilgrastim on day 1 of the first round are randomly assigned to either the control or experimental arm. Patients in the control arm continue pegfilgrastim injection on day 1 while patients in the experimental arm will receive pegfilgrastim injection on day 3 to see if changing the pegfilgrastim administration date from day 1 to day 3 starting from the second round of chemotherapy could reduce the incidence of neutropenia
The goal of this observational study is to characterize the diagnostic and therapeutic management of autoimmune cytopenias including autoimmune hemolytic anemia, immune thrombocytopenia, and chronic idiopathic/autoimmune neutropenia. The main aims to answer are: - evaluation of traditional and novel diagnostic tools including immunohematology, cytokine essays, bone marrow studies, molecular findings, and fecal microbiome. - evaluation of type and sequence of the therapies administered, the response rates, and the adverse events. - evaluation of clinical and laboratory (immunologic, molecular, and morphologic) predictors of outcome. - evolution of autoimmune cytopenias into myelodysplastic syndromes. - a subgroup of patients with myelodysplastic syndromes will be included to evaluate the presence of immunologic events, autoimmune activation, and red cell metabolism. Participants will receive a clinical/laboratory diagnostic workup as per current clinical practice. Furthermore They will be sampled at baseline (peripheral blood and feces for microbiome) and followed up for at least 3 years to evaluate their clinical course, therapeutic management and outcome.
The goal of this clinical trial is to compare a short course of antibiotics in patients in whom no bacterial infection is found with the current "golden standard": long-term antibiotic treatment in adult hematology patients who develop neutropenic fever. The main question it aims to answer is: whether the short-term treatment is equally safe for patients, hence the name 'SAFE study'. Participants will be randomly assigned (randomized) to one of two treatment options once they develop neutropenic fever: short-term or long-term antibiotic treatment. An additional blood sample, urine sample and stool sample will be collected. Researchers will compare the short-term and the long-term antibiotic treatment groups to see if the short treatment is equally safe as the long-term treatment group.
Febrile neutropenia is often seen in patients with hematologic malignancies who receive cytotoxic chemotherapy. These patients are usually placed on posaconazole prophylaxis upon starting chemotherapy. If an episode of febrile neutropenia occurs, generally an anti-pseudomonal beta lactam, like cefepime or piperacillin-tazobactam, is initiated. In patients who continue to fever on these agents, the optimal method of antimicrobial revision has yet to be determined.
Newborn screening (NBS) is a global initiative of systematic testing at birth to identify babies with pre-defined severe but treatable conditions. With a simple blood test, rare genetic conditions can be easily detected, and the early start of transformative treatment will help avoid severe disabilities and increase the quality of life. Baby Detect Project is an innovative NBS program using a panel of target sequencing that aims to identify 126 treatable severe early onset genetic diseases at birth caused by 361 genes. The list of diseases has been established in close collaboration with the Paediatricians of the University Hospital in Liege. The investigators use dedicated dried blood spots collected between the first day and 28 days of life of babies, after a consent sign by parents.
This is a research study to test the tolerability and clinical effectiveness of the study drug, Letermovir (LET), when used as secondary prophylaxis following treatment of Cytomegalovirus (CMV) infection and disease in a solid organ transplant recipient. This study is an open label trial in which Letermovir will be prescribed to prevent the recurrence of CMV infection and disease in a solid organ transplant recipient following treatment of CMV infection or disease.
Febrile aplasia is a common occurrence in children/adults treated with chemotherapy for malignant blood diseases or solid cancers. This acquired deficiency of immunity mainly causes susceptibility to bacterial and fungal infections, pathogens normally recognized by specific receptors of innate immunity (Pattern Recognition Receptor, PRR). Thus, the febrile episodes in the context of post-chemotherapy neutropenia can be bacterial or fungal etiology, but can also frequently be related to viral infections, toxic phenomena or other etiologies. In the absence of a discriminating marker, treatment for all these children is based on early, broad-spectrum antibiotic therapy in hospital. Septic shock or even death by refractory septic shock remain, even if they are rare, real complications in pediatric oncology, requiring discriminatory markers for effective management, While trying to reduce the number and duration of hospitalizations for children at low risk for severe febrile aplasia. It is therefore necessary to identify other markers allowing the earliest possible classification of episodes of febrile aplasia. A previous study, conducted by our team, PTX3 and febrile aplasia, studied pentraxin 3 (PTX3), a soluble PRR of the pentraxin family that plays a key role in immune surveillance against pathogens. Preliminary results obtained from samples from a cohort of patients treated in adult hematology and pediatric onco-hematology support a prognostic character of PTX3 in the severity of aplasia, with higher elevations of serum protein during episodes of severe sepsis or septic shock (ongoing analyses and interpretations for the adult population). The available data to date on the pediatric cohort are insufficient to conclude on the value of using PTX3. The investigators therefore wish to create a new paediatric cohort, in order to evaluate the PTX3 levels for the paediatric population and also to perform the assay of a new marker, clusterin. Clusterin (CLU) is an extracellular chaperone protein of constitutive expression. The Innate Immunity team of the National Institute of Health and Medical Research (INSERM) "1307-Scientific Research National Center (CNRS) 6075" unit has shown that Clu binds to extracellular histones and inhibits their inflammatory, thrombotic and cytotoxic properties. The investigators also observed (i) that in adults without severe sepsis neutropenics, low serum levels of Clu at intake and lack of normalization of rates are associated with higher mortality and (ii) Clu levels are inversely correlated with circulating histone levels. All these data suggest that Clu would have a protective role for histone-induced lesions during sepsis independently of antibiotic treatment, opening an innovative therapeutic pathway in the management of severe sepsis. CluPPFeN is based on the hypothesis that, in a pediatric population with episodes of febrile aplasia, serum Clu and serum PTX3 levels would discriminate between febrile episodes caused by bacterial infection and other etiologies and, As a result, would reduce the consumption of antibiotics, which provide resistance, and the length of hospitalization.
Antibacterial prophylaxis is recommended in patients at high risk of infection, specifically patients undergoing acute leukemia induction therapy or hematopoietic stem cell transplant (HSCT) who are expected to have profound neutropenia (ANC<100 neutrophils/milliliter) for more than seven days. Xerava™ (eravacycline) has a broad spectrum of activity including many multi-drug resistant strains of bacteria. It is not an agent used for treatment of febrile neutropenia, making eravacycline a very attractive alternative to consider in this prophylactic setting. Eravacycline has activity against MRSA, VRE, and Clostridioides difficile, all of which are common problems in this patient population. It also covers the majority of enteric gram-negative pathogens while also producing satisfactory tissue penetration and adequate plasma concentrations, which has classically been a concern with prior agents. Eravacycline has activity against coagulase-negative staphylococcus, which is a common catheter-related infection in leukemia and HSCT patients. The primary objective will be report the incidence of breakthrough infections during eravacycline prophylaxis for hematologic malignancy patients with prolonged neutropenia.