1,143 results match your criteria: "Hopital Universitaire Necker Enfants Malades[Affiliation]"

Background And Aims: Transcatheter pulmonary valve implantation (TPVI) is indicated to treat right-ventricular outflow tract (RVOT) dysfunction related to congenital heart disease (CHD). Outcomes of TPVI with the SAPIEN 3 valve that are insufficiently documented were investigated in the EUROPULMS3 registry of SAPIEN 3-TPVI.

Methods: Patient-related, procedural, and follow-up outcome data were retrospectively assessed in this observational cohort from 35 centres in 15 countries.

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  • Variants of uncertain significance (VUS) present challenges in diagnosing rare diseases, and episignatures have emerged as potential biomarkers to help classify these variants.
  • A study analyzed DNA methylation data from different groups, including carriers of pathogenic variants and healthy controls, using a k-nearest-neighbour classifier to assess the predictive abilities of various episignatures.
  • Results revealed that while some signatures (ATRX, DNMT3A, KMT2D, NSD1) achieved 100% sensitivity, others (CREBBP-RSTS, CHD8) showed lower performance, indicating that not all episignatures are equally reliable for diagnostic use and highlighting the need for further validation with larger sample sizes.
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Fasting or eating during labour? It is time to move forward.

Anaesth Crit Care Pain Med

February 2024

Department of Anaesthesiology, Intensive Care and Perioperative Medicine, Assistance Publique - Hôpitaux de Paris, Hôpital Bicêtre, France, and Université Paris Saclay, Paris, France.

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MRI quantitative muscle characterization in children with X-linked hypophosphatemia.

Orthop Traumatol Surg Res

May 2024

Department of Pediatric Orthopaedic Surgery, Hôpital Universitaire Necker Enfants Malades, 149, rue de Sèvres, 75015 Paris, France. Electronic address:

Article Synopsis
  • Children with X Linked Hypophosphatemia (XLH) experience significant bone issues and may also have distinct muscle characteristics compared to typically developed (TD) children.
  • A study used MRI to analyze muscle morphology in 11 XLH patients and 15 TD children, hypothesizing that XLH would show noticeable differences that could contribute to their limping.
  • Results indicated that most muscle lengths and volumes in XLH patients were smaller than in TD children, with the exception of the medius/minimus gluteus muscles, suggesting a varied muscle structure associated with the condition.
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  • * The lack of a protein called Dystrophin leads to muscle damage and can cause heart and breathing problems.
  • * Researchers studied muscle samples from DMD patients to understand how muscle healing works and found that important muscle cells are not working well, which could help in developing new treatments.
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Loss-of-function variants in cause dominant anomalies of the corpus callosum with favourable cognitive prognosis.

J Med Genet

February 2024

Department of Genetics and Referral Center for Intellectual disabilities of rare causes, AP-HP.Sorbonne Université, Assistance Publique-Hopitaux de Paris, Pitié-Salpêtrière Hospital, Paris, 75013, France, Paris, France.

Article Synopsis
  • The study investigates anomalies of the corpus callosum (ACC), a common brain malformation, highlighting that the genetic causes of ACC without intellectual disability (ID) are not well understood.
  • Researchers identified a new dominant gene associated with ACC, reporting on nine individuals with a specific genetic variant linked to both familial inheritance and normal cognitive function.
  • Findings indicate that this gene may lead to ACC while maintaining normal intellectual abilities, suggesting a broader range of physical malformations associated with it beyond just eye conditions.
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Despite their burden, most congenital defects remain poorly understood, due to lack of knowledge of embryological mechanisms. Here, we identify Greb1l mutants as a mouse model of crisscross heart. Based on 3D quantifications of shape changes, we demonstrate that torsion of the atrioventricular canal occurs together with supero-inferior ventricles at E10.

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Background: Severe primary insulin-like growth factor-I (IGF-I) deficiency (SPIGFD) is a rare growth disorder characterized by short stature (standard deviation score [SDS] ≤ 3.0), low circulating concentrations of IGF-I (SDS ≤ 3.0), and normal or elevated concentrations of growth hormone (GH).

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The Pharmacokinetic Profile of Palovarotene: An Open-Label Phase I Trial Investigating the Effect of Food and Potential for Drug-Drug Interaction in Healthy Participants.

Eur J Drug Metab Pharmacokinet

November 2023

Département de Génétique Clinique, Hôpital Universitaire Necker-Enfants Malades, Institut Imagine, Université Paris Cité, Paris, France.

Article Synopsis
  • The study focused on palovarotene, a drug being developed for fibrodysplasia ossificans progressiva (FOP), assessing its pharmacokinetics in both fed and fasted states, and its potential impact on the drug midazolam, a CYP3A4 substrate.
  • Participants (23 total) received varying doses of palovarotene, with results showing increased drug absorption in fed conditions, but palovarotene did not significantly affect midazolam levels, indicating it is not a strong CYP3A4 inducer.
  • The findings suggest that palovarotene can be given after meals, either whole or sprinkled on food, and that its 20 mg
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Erythropoietin downregulates red blood cell clearance, increasing transfusion efficacy in severely anemic recipients.

Am J Hematol

December 2023

Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, INSERM, Institut Imagine, Université Paris Cité, Paris, France.

Red blood cells (RBC) transfusion is used to alleviate symptoms and prevent complications in anemic patients by restoring oxygen delivery to tissues. RBC transfusion efficacy, that can be measured by a rise in hemoglobin (Hb) concentration, is influenced by donor-, product-, and recipient-related characteristics. In some studies, severe pre-transfusion anemia is associated with a greater than expected Hb increment following transfusion but the biological mechanism underpinning this relationship remains poorly understood.

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  • Advances in cystic fibrosis (CF) diagnosis focus on improvements in newborn bloodspot screening, gene analysis, and understanding CFTR-related disorders.
  • These developments highlight the importance of timely and accurate diagnosis for access to variant-specific therapy, which can significantly benefit those with eligible CFTR gene variants.
  • The guidance in this paper updates previous standards and emphasizes the growing necessity for proper diagnosis as future trials for variant-specific therapies are anticipated.
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Comment on: PCO2 on arrival as a predictive biomarker in patients with out-of-hospital cardiac arrest.

Am J Emerg Med

November 2023

SAMU de Paris, Service d'Anesthésie Réanimation, Hôpital Universitaire Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris, Université de Paris, Paris, France; Université Paris Cité, Paris, France.

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  • Weill-Marchesani syndrome (WMS) is a genetic disorder marked by short stature, brachydactyly, joint limitations, and specific eye abnormalities like spherophakia and ectopia lentis. Cardiovascular issues can also occur. It has both dominant and recessive genetic forms caused by mutations in different genes.
  • A study involved 61 patients, including 18 from new research and 43 from existing literature, assessing the correlation between their genetic variations and clinical features. It was found that the majority exhibited eye anomalies and a significant portion had short stature and valvulopathy.
  • The research indicates that while eye abnormalities are crucial for diagnosing WMS, its overall symptoms appear more
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Background: There is no stent designed or approved for use in infants. We sought to obtain in vitro and in vivo data on a new concept conceived to implant Optimus-L stents at infant vessel diameters and offer a potential long term stent solution.

Methods: Nineteen Optimus-L stents were mounted on 8 types of angioplasty balloons with diameters 6, 8, and 10 mm with the use of an injection-moulded hand crimper.

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To pool resources and reduce inequalities in access to transition preparation for patients, transition clinics were created in France. They are places in hospitals, independent of the usual care departments, offering multiple resources and services for adolescents and their parents. Of the 24 physicians from care departments who were surveyed, half of them do not use transition clinics.

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Article Synopsis
  • Interstitial pneumonia with autoimmune features (IPAF) is a condition in kids that affects their lungs and is linked to autoimmunity, similar to a disease seen in adults.
  • In a study with 27 children, 6 were found to have IPAF, while others had different autoimmune diseases like juvenile dermatomyositis.
  • Most kids with IPAF responded well to treatment, and they had better lung health compared to those with other autoimmune lung diseases, but more studies are needed to learn more about IPAF in children.
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Aims: The incidence of atrial tachyarrhythmias is high in patients with atrioventricular septal defect (AVSD). No specific data on catheter ablation have been reported so far in this population. We aimed to describe the main mechanisms of atrial tachyarrhythmias in patients with AVSD and to analyse outcomes after catheter ablation.

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Severe adult hemophagocytic lymphohistiocytosis (HLHa) correlates with HLH-related gene variants.

J Allergy Clin Immunol

January 2024

Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, INSERM UMR1163/CNRS URL 8254, Paris, France; French National Center for Primary Immunodeficiencies, Necker University Hospital, AP-HP, Paris, France; Imagine Institute, Université Paris Cité, Paris, France; Clinical Hematology, Necker University Hospital, AP-HP, Paris, France. Electronic address:

Article Synopsis
  • - The study investigates the relationship between genetic factors and the severity of adult hemophagocytic lymphohistiocytosis (HLHa), focusing on gene variants related to HLH.
  • - Clinical data from 130 HLHa patients, including their genotypes for 8 specific HLH-related genes, were analyzed to assess disease outcomes, with findings showing a significant association between the number of genetic variants and severity of HLHa.
  • - Results indicate that HLH gene variants can impact the severity and treatment resistance in HLHa patients, highlighting their potential role in understanding the condition better.
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  • The study looked at how babies born with congenital diaphragmatic hernia (CDH) grow during their first year and what factors might make them not grow as well.
  • Researchers checked the weight of 63 babies at different times and found that some struggled with growth, especially if they had a severe form of CDH or were born early.
  • The results suggest babies with CDH need special diets to help them grow properly, sometimes needing much more nutrition than normal babies do.
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Imaging features to distinguish posterior fossa ependymoma subgroups.

Eur Radiol

March 2024

Pediatric Radiology Department, Assistance-Publique Hôpitaux de Paris (AP-HP), Hôpital Universitaire Necker-Enfants Malades, 149 Rue de Sèvres, 75015, Paris, France.

Article Synopsis
  • Posterior fossa ependymomas can be split into two groups (EPN_PFA and EPN_PFB), which differ in their DNA methylation and prognoses; EPN_PFA is more common in younger patients and tends to have larger tumor volumes and more severe symptoms like hydrocephalus.* -
  • A study analyzing MRI scans of 68 patients showed that EPN_PFA tumors are typically larger (57 cm³ vs. 29 cm³), have more intratumor calcifications (93% vs. 40%), and exhibit different enhancement patterns (5% homogeneous vs. 75% for EPN_PFB).* -
  • The findings suggest that MRI characteristics vary between the two e
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Arterial Spin-Labeling in the Assessment of Pediatric Nontraumatic Orbital Lesions.

AJNR Am J Neuroradiol

October 2023

From the Department of Pediatric Radiology (S.N., A.L., V.D.-R., R.L., C.-J.R., N.B.), Hôpital Universitaire Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France

Benign and malignant pediatric orbital lesions can sometimes have overlapping features on conventional MR imaging sequences. MR imaging of 27 children was retrospectively reviewed to describe the signal of some common pediatric extraocular orbital lesions on arterial spin-labeling and to evaluate whether this sequence helps to discriminate malignant from benign masses, with or without ADC value measurements. Qualitative and quantitative assessments of arterial spin-labeling CBF and ADC were performed.

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The Ectodermal Dysplasias-Burden of Disease Score: Development and Validation of an Ectodermal Dysplasia Family/Parental Burden Score.

Acta Derm Venereol

August 2023

Department of Dermatology, Reference Center for Genodermatoses and Rare Skin Diseases (MAGEC), Filière Maladies Rares Dermatologiques (FIMARAD), ERN-Skin, Hôpital Universitaire Necker- Enfants Malades, Assistance Publique - Hôpitaux de Paris-Centre (AP-HP5), Paris, France.

Ectodermal dysplasias are genetic conditions affecting the development and/or homeostasis of 2 or more ectodermal derivatives, including hair, teeth, nails, and certain glands. No tool is available to assess the burden of ectodermal dysplasias and its multidimensional impact on patients and their families. This study developed and validated a familial/parental 19-item burden questionnaire designed specifically for ectodermal dysplasias.

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Comment on: Results from 237 extracorporeal membrane oxygenation runs with drowned patients.

Crit Care

August 2023

SAMU de Paris, Service d'Anesthésie Réanimation, Hôpital Universitaire Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris, and Paris University, Paris, France.

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Atrioseptostomy balloon catheter is an essential item to have on our shelves. However, the recall and shortage in production of the commonly used balloon atrioseptostomy catheters posed an imminent threat to our patients. Herein, we present the case of a newborn with a post-natal diagnosis of simple transposition of great arteries and restrictive atrial communication where repeated static balloon atrial septostomy using a 9 mm x 20 mm Sterling balloon failed to improve his status.

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