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11,291 real negative results, null findings, and replication failures in Medicine · Negative / Null Result Report. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessMedicine

Primary mucosal melanoma of the head and neck in Denmark, 1982–2012: Demographic and clinical aspects. A retrospective DAHANCA study

Mads Lawaetz, Fatima Birch‐Johansen, Søren Friis et al. · 2016 · Acta Oncologica

Background The study was performed to determine the epidemiological, clinical, and histopathological characteristics and prognosis of primary mucosal melanoma of the head and neck (MMHN) in Denmark. Material and methods This was a national…

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Negative / Null Result ReportMedicine

Characterization of H5N2 influenza viruses isolated in South Korea and their influence on the emergence of a novel H9N2 influenza virus

Hye-Ryoung Kim, Choi-Ku Park, Jae‐Ku Oem et al. · 2010 · Journal of General Virology

We characterized low pathogenic avian influenza (LPAI) H5N2 and H9N2 viruses isolated in South Korea from 2008 to 2009. Genetic analysis of the H5N2 viruses isolated from wild birds and domestic ducks demonstrated that they were related to…

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Negative / Null Result ReportOpen accessMedicine

Significant associations of age, menopausal status and lifestyle factors with visceral adiposity in African-American and European-American women

Ellen W. Demerath, Nikki Lynn Rogers, Derek Reed et al. · 2010 · Annals of Human Biology

BACKGROUND: Elevated visceral adiposity is strongly predictive of cardiometabolic disease, but, due to the high cost of biomedical imaging, assessment of factors contributing to normal variation in visceral (VAT) and subcutaneous (SAT)…

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Negative / Null Result ReportOpen accessMedicine

Interrogating the immune-modulating roles of radiation therapy for a rational combination with immune-checkpoint inhibitors in treating pancreatic cancer

Kenji Fujiwara, May Tun Saung, Hao Jing et al. · 2020 · Journal for ImmunoTherapy of Cancer

Background Radiation therapy (RT) has the potential to enhance the efficacy of immunotherapy, such as checkpoint inhibitors, which has dramatically altered the landscape of treatments for many cancers, but not yet for pancreatic ductal…

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Negative / Null Result ReportOpen accessMedicine

A mouse model of hepatic encephalopathy: bile duct ligation induces brain ammonia overload, glial cell activation and neuroinflammation

Wouter Claeys, Lien Van Hoecke, Anja Geerts et al. · 2022 · Scientific Reports

Hepatic encephalopathy (HE) is a common complication of chronic liver disease, characterized by an altered mental state and hyperammonemia. Insight into the brain pathophysiology of HE is limited due to a paucity of well-characterized HE models beyond the rat bile duct ligation (BDL) model. Here, we assess the presence of HE characteristics in the mouse BDL model. We show that BDL in C57Bl/6j mice induces motor dysfunction, progressive liver fibrosis, liver function failure and hyperammonemia, all hallmarks of HE. Swiss mice however fail to replicate the same phenotype, underscoring the import

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Negative / Null Result ReportOpen accessMedicine

Randomized Controlled Trial of Ultrasound-guided Fluid Resuscitation of Sepsis-Induced Hypoperfusion and Septic Shock

Khrongwong Musikatavorn, Poj Plitawanon, Suthaporn Lumlertgul et al. · 2021 · Western Journal of Emergency Medicine

INTRODUCTION: The ultrasound measurement of inferior vena cava (IVC) diameter change during respiratory phase to guide fluid resuscitation in shock patients is widely performed, but the benefit on reducing the mortality of sepsis patients is questionable. The study objective was to evaluate the 30-day mortality rate of patients with sepsis-induced tissue hypoperfusion (SITH) and septic shock (SS) treated with ultrasound-guided fluid management (UGFM) using ultrasonographic change of the IVC diameter during respiration compared with those treated with the usual-care strategy. METHODS: This was

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Negative / Null Result ReportMedicine

A Replication Study for Association of 53 Single Nucleotide Polymorphisms in ScoliScore Test With Adolescent Idiopathic Scoliosis in French-Canadian Population

Qi Tang, Cédric Julien, Robert Eveleigh et al. · 2015 · Spine

In Brief Study Design. A replication association study that used genomic data generated from French-Canadian case and control cohorts. Objectives. To determine whether the 53 single nucleotide polymorphisms (SNPs) that were previously…

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Negative / Null Result ReportOpen accessMedicine

Significant association between clinical characteristics and changes in peripheral immuno-phenotype in large vessel vasculitis

Kotaro Matsumoto, Katsuya Suzuki, Keiko Yoshimoto et al. · 2019 · Arthritis Research & Therapy

Abstract Background Large vessel vasculitis (LVV) is a type of vasculitis characterized by granulomatous inflammation of medium- and large-sized arteries. Clinical assessment of acute phase reactants has been conventionally used to diagnose and monitor diseases; however, accurate assessment of vascular disease activity status can be difficult. In this study, we investigated comprehensive immuno-phenotyping to explore useful biomarkers associated with clinical characteristics. Methods Consecutive patients with newly diagnosed LVV who visited our institution between May 2016 and May 2019 were en

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Negative / Null Result ReportOpen accessMedicine

BAFF-neutralizing interaction of belimumab related to its therapeutic efficacy for treating systemic lupus erythematosus

Woo‐Ri Shin, Hyun Tae Lee, Heejin Lim et al. · 2018 · Nature Communications

BAFF, a member of the TNF superfamily, has been recognized as a good target for autoimmune diseases. Belimumab, an anti-BAFF monoclonal antibody, was approved by the FDA for use in treating systemic lupus erythematosus. However, the molecular basis of BAFF neutralization by belimumab remains unclear. Here our crystal structure of the BAFF-belimumab Fab complex shows the precise epitope and the BAFF-neutralizing mechanism of belimumab, and demonstrates that the therapeutic activity of belimumab involves not only antagonizing the BAFF-receptor interaction, but also disrupting the formation of th

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Negative / Null Result ReportOpen accessMedicine

Identification of Susceptibility Genes for Peritoneal, Ovarian, and Deep Infiltrating Endometriosis Using a Pooled Sample-Based Genome-Wide Association Study

Bruno Borghese, Jörg Tost, Magalie de Surville et al. · 2015 · BioMed Research International

Characterizing genetic contributions to endometriosis might help to shorten the time to diagnosis, especially in the most severe forms, but represents a challenge. Previous genome-wide association studies (GWAS) made no distinction between peritoneal endometriosis (SUP), endometrioma (OMA), and deep infiltrating endometriosis (DIE). We therefore conducted a pooled sample-based GWAS and distinguished histologically confirmed endometriosis subtypes. We performed an initial discovery step on 10-individual pools (two pools per condition). After quality control filtering, a Monte-Carlo simulation w

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Negative / Null Result ReportOpen accessMedicine

Intratumoral administration of CD1c (BDCA-1)+ and CD141 (BDCA-3)+ myeloid dendritic cells in combination with talimogene laherparepvec in immune checkpoint blockade refractory advanced melanoma patients: a phase I clinical trial

Julia Katharina Schwarze, Jens Tijtgat, Gil Awada et al. · 2022 · Journal for ImmunoTherapy of Cancer

Background Intratumoral (IT) myeloid dendritic cells (myDCs) play a pivotal role in initiating antitumor immune responses and relicensing of anti-tumor cytotoxic T lymphocytes within the tumor microenvironment. Talimogene laherparepvec…

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Negative / Null Result ReportOpen accessMedicine

The quinoline bromoquinol exhibits broad-spectrum antifungal activity and induces oxidative stress and apoptosis in Aspergillus fumigatus

Dafna Ben Yaakov, Yana Shadkchan, Nathaniel D. Albert et al. · 2017 · Journal of Antimicrobial Chemotherapy

Objectives: Over the last 30 years, the number of invasive fungal infections among immunosuppressed patients has increased significantly, while the number of effective systemic antifungal drugs remains low. The aim of this study was to…

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Negative / Null Result ReportOpen accessMedicine

Morphologic remission status is limited compared to ΔN flow cytometry: a Children’s Oncology Group AAML0531 report

Lisa Eidenschink Brodersen, Robert B. Gerbing, María Laura Pardo et al. · 2020 · Blood Advances

Risk stratification for acute myeloid leukemia (AML) uses molecular and cytogenetic abnormalities identified at diagnosis. Response to therapy informs risk, and morphology continues to be used more frequently than flow cytometry. Herein,…

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Negative / Null Result ReportOpen accessMedicine

Proactive vs Reactive Treatment of Hypotension During Surgery

Matthijs Kant, Wilton A. van Klei, Markus W. Hollmann et al. · 2025 · JAMA

Importance: Intraoperative hypotension is associated with adverse postoperative outcomes, but whether a proactive strategy to prevent intraoperative hypotension improves outcomes is uncertain. Objective: To determine whether intraoperative…

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Negative / Null Result ReportOpen accessMedicine

From bench to bedside: translating mesenchymal stem cell therapies through preclinical and clinical evidence

Jai Chand Patel, Meenakshi Shukla, Manish Shukla et al. · 2025 · Frontiers in Bioengineering and Biotechnology

Mesenchymal stem cells (MSCs) are emerging as a powerful tool in regenerative medicine due to their ability to differentiate into mesenchymal lineages, such as bone, cartilage, and fat, along with their low immunogenicity and strong immunomodulatory properties. Unlike traditional cell therapies that rely on engraftment, MSCs primarily function through paracrine signaling-secreting bioactive molecules like vascular endothelial growth factor (VEGF), transforming growth factor-beta (TGF-β), and exosomes. These factors contribute to tissue repair, promote angiogenesis, and modulate immune response

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Negative / Null Result ReportOpen accessMedicine

Ferroptosis is a targetable detrimental factor in metabolic dysfunction-associated steatotic liver disease

Cédric Peleman, Stig Hellemans, Geraldine Veeckmans et al. · 2024 · Cell Death and Differentiation

There is an unmet clinical need for pharmacologic treatment for metabolic dysfunction-associated steatotic liver disease (MASLD). Hepatocyte cell death is a hallmark of this highly prevalent chronic liver disease, but the dominant type of cell death remains uncertain. Here we report that ferroptosis, an iron-catalyzed mode of regulated cell death, contributes to MASLD. Unsupervised clustering in a cohort of biopsy-proven MASLD patients revealed a subgroup with hepatic ferroptosis signature and lower glutathione peroxidase 4 (GPX4) levels. Likewise, a subgroup with reduced ferroptosis defenses

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Negative / Null Result ReportOpen accessMedicine

Exploring the lung-gut direction of the gut-lung axis in patients with ARDS

Mairi Ziaka, Aristomenis K. Exadaktylos · 2024 · Critical Care

Acute respiratory distress syndrome (ARDS) represents a life-threatening inflammatory reaction marked by refractory hypoxaemia and pulmonary oedema. Despite advancements in treatment perspectives, ARDS still carries a high mortality rate, often due to systemic inflammatory responses leading to multiple organ dysfunction syndrome (MODS). Indeed, the deterioration and associated mortality in patients with acute lung injury (LI)/ARDS is believed to originate alongside respiratory failure mainly from the involvement of extrapulmonary organs, a consequence of the complex interaction between initial

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Negative / Null Result ReportMedicine

Desire to Dissociate: Implications for Problematic Drinking in College Students with Childhood or Adolescent Sexual Abuse Exposure

Alicia K. Klanecky, Dennis E. McChargue, Lindsay Bruggeman · 2012 · American Journal on Addictions

Alcohol use to replace inadequate dissociative capabilities, or chemical dissociation, has been linked to college students with childhood or adolescent sexual abuse (CASA). Insofar as CASA-exposed persons experience a restricted range of…

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Negative / Null Result ReportOpen accessMedicine

High-Dose Convalescent Plasma for Treatment of Severe COVID-19

Gil Cunha De Santis, Luciana Correa Oliveira de Oliveira, Pedro Manuel Marques Garibaldi et al. · 2022 · Emerging infectious diseases

To assess whether high-dose coronavirus disease (COVID-19) convalescent plasma (CCP) transfusion may benefit patients with severe COVID-19, we conducted a multicenter randomized trial in Brazil. Patients with severe COVID-19 who were within 10 days of initial symptom onset were eligible. Patients in the CCP group received 3 daily doses of CCP (600 mL/d) in addition to standard treatment; control patients received standard treatment only. Primary outcomes were death rates at days 30 and 60 of study randomization. Secondary outcomes were ventilator-free days and hospital-free days. We enrolled 1

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Negative / Null Result ReportOpen accessMedicine

Efficacy of empagliflozin in heart failure with preserved versus mid-range ejection fraction: a pre-specified analysis of EMPEROR-Preserved

Stefan D. Anker, Javed Butler, Muhammad Usman et al. · 2022 · Nature Medicine

Abstract The EMPEROR-Preserved trial showed that the sodium–glucose co-transporter 2 inhibitor empagliflozin significantly reduces the risk of cardiovascular death or hospitalization for heart failure (HHF) in heart failure patients with left ventricular ejection fraction (LVEF) > 40%. Here, we report the results of a pre-specified analysis that separately evaluates these patients stratified by LVEF: preserved (≥ 50%) ( n = 4,005; 66.9%) or mid-range (41–49%). In patients with LVEF ≥ 50%, empagliflozin reduced the risk of cardiovascular death or HHF (the primary endpoint) by 17% versus plac

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Negative / Null Result ReportOpen accessMedicine

Significant association between urethral length measured by magnetic resonance imaging and urinary continence recovery after robot-assisted radical prostatectomy

Kosuke Kitamura, Toshiyuki China, Mayuko Kanayama et al. · 2018 · Prostate International

To determine the clinical predictive factors affecting the recovery from postoperative urinary incontinence after robot-assisted radical prostatectomy (RARP). We consecutively analyzed 320 patients who underwent RARP between January 2012…

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Negative / Null Result ReportOpen accessMedicine

Is niacin ineffective? Or did AIM-HIGH miss its target?

Stephen J. Nicholls · 2012 · Cleveland Clinic Journal of Medicine

The AIM-HIGH trial (Atherothrombosis Intervention in Metabolic Syndrome With Low HDL/High Triglycerides: Impact on Global Health Outcomes) found, in an interim analysis, no cardiovascular benefit from taking extended-release niacin…

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Negative / Null Result ReportOpen accessMedicine

Vector Competence of the Stable Fly (Diptera: Muscidae) for West Nile Virus

Michael Scott Doyle, Bethany N. Swope, Jerome A. Hogsette et al. · 2011 · Journal of Medical Entomology

In 2006-2007, stable flies, Stomoxys calcitrans (L.) (Diptera: Muscidae), were suspected of being enzootic vectors of West Nile virus (family Flaviviridae, genus Flavivirus, WNV) during a die-off of American white pelicans (Pelecanus…

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Negative / Null Result ReportOpen accessMedicine

Lung-Protective Mechanical Ventilation in Patients with Severe Acute Brain Injury: A Multicenter Randomized Clinical Trial (PROLABI)

Luciana Mascia, Vito Fanelli, Alice Mistretta et al. · 2024 · American Journal of Respiratory and Critical Care Medicine

Abstract Rationale Lung-protective strategies using low Vt and moderate positive end-expiratory pressure (PEEP) are considered best practice in critical care, but interventional trials have never been conducted in patients with acute brain…

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Negative / Null Result ReportOpen accessMedicine

Association of Severe Hyperoxemia Events and Mortality Among Patients Admitted to a Pediatric Intensive Care Unit

Sriram Ramgopal, Cameron Dezfulian, Robert W. Hickey et al. · 2019 · JAMA Network Open

Importance: A high Pao2, termed hyperoxemia, is postulated to have deleterious health outcomes. To date, the association between hyperoxemia during the ongoing management of critical illness and mortality has been incompletely evaluated in children. Objective: To examine whether severe hyperoxemia events are associated with mortality among patients admitted to a pediatric intensive care unit (PICU). Design, Setting, and Participants: A retrospective cohort study was conducted over a 10-year period (January 1, 2009, to December 31, 2018); all 23 719 PICU encounters at a quaternary children's ho

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Negative / Null Result ReportMedicine

Effect of vorapaxar on myocardial infarction in the thrombin receptor antagonist for clinical event reduction in acute coronary syndrome (TRA{middle dot}CER) trial

Sergio Leonardi, Pierluigi Tricoci, HD White et al. · 2013 · European Heart Journal

AIMS: The TRA·CER trial compared vorapaxar, a novel platelet protease-activated receptor (PAR)-1 antagonist, with placebo in 12 944 patients with high-risk non-ST-segment elevation acute coronary syndromes (NSTE ACS). In this analysis, we…

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Negative / Null Result ReportOpen accessMedicine

Multiple Organ Dysfunction Syndrome Caused by Sepsis: Risk Factor Analysis

Guodong Sun, Yang Zhang, Shanshan Mo et al. · 2021 · International Journal of General Medicine

PURPOSE: To analyze the risk factors of multiple organ dysfunction syndromes (MODS) caused by sepsis. PATIENTS AND METHODS: A total of 180 patients with sepsis admitted to The First Affiliated Hospital of Harbin Medical University (No. 23,…

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