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Browse the failure-mode index

11,287 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

Intracranial atherosclerosis and dementia

Jennifer L. Dearborn, Yiyi Zhang, Ye Qiao et al. · 2017 · Neurology

OBJECTIVE: To explore the association of intracranial atherosclerotic disease (ICAD) with mild cognitive impairment (MCI) and dementia. METHODS: From 2011 to 2013, 1,744 participants completed high-resolution vessel wall MRI from the…

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Negative / Null Result ReportOpen accessMedicine

Patient Outcomes at Twelve Months after Early Decompressive Craniectomy for Diffuse Traumatic Brain Injury in the Randomized DECRA Clinical Trial

D. James Cooper, Jeffrey V. Rosenfeld, Lynnette Murray et al. · 2020 · Journal of Neurotrauma

Functional outcomes at 12 months were a secondary outcome of the randomized DECRA trial of early decompressive craniectomy for severe diffuse traumatic brain injury (TBI) and refractory intracranial hypertension. In the DECRA trial,…

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Negative / Null Result ReportMedicine

Impact of a collagen matrix on early healing, aesthetics and patient morbidity in oral mucosal wounds – a randomized study in humans

Daniel S. Thoma, Manuel Sancho‐Puchades, Dominik A. Ettlin et al. · 2011 · Journal Of Clinical Periodontology

AIM: To test whether a collagen matrix (CM) can improve early wound healing and aesthetics, and decrease wound sensitivity compared with spontaneous healing. METHODS: In 15 volunteers, 6-mm punch biopsies were harvested at both palatal…

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Negative / Null Result ReportOpen accessMedicine

Elevation of serum c‐reactive protein in patients with OAB and IC/BPS implies chronic inflammation in the urinary bladder

Shiu‐Dong Chung, Hsin‐Tzu Liu, Heng Lin et al. · 2011 · Neurourology and Urodynamics

AIMS: Chronic inflammation has been implicated in the development of overactive bladder (OAB) and interstitial cystitis/bladder pain syndrome (IC/BPS). An elevation of C-reactive protein (CRP) has been associated with chronic inflammation…

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Negative / Null Result ReportOpen accessMedicine

Determinants of Left Ventricular Mass in Patients on Hemodialysis

Christopher T. Chan, Tom Greene, Glenn M. Chertow et al. · 2012 · Circulation Cardiovascular Imaging

BACKGROUND: An increase in left ventricular mass (LVM) is associated with mortality and cardiovascular morbidity in patients with end-stage renal disease. METHODS AND RESULTS: The Frequent Hemodialysis Network (FHN) Daily Trial randomized…

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Negative / Null Result ReportMedicine

Rituximab treatment in patients with refractory inflammatory myopathies

E. Mahler, M. Blom, Nicol C. Voermans et al. · 2011 · Lara D. Veeken

OBJECTIVE: To assess the efficacy of rituximab on disease activity and muscle strength in patients with inflammatory myopathies refractory to conventional therapy. METHODS; Thirteen patients were treated with rituximab 1000 mg i.v., twice,…

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Negative / Null Result ReportOpen accessMedicine

Cetuximab: its unique place in head and neck cancer treatment

J. Vermorken, Pol Specenier · 2013 · Biologics

Head and neck cancer is the sixth most common cancer worldwide. At present, globally about 650,000 new cases of squamous cell carcinoma of the head and neck (SCCHN) are diagnosed each year. The epidermal growth factor receptor (EGFR) is…

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Negative / Null Result ReportOpen accessMedicine

Nonmetastatic Medulloblastoma of Early Childhood: Results From the Prospective Clinical Trial HIT-2000 and An Extended Validation Cohort

Martin Mynarek, Katja von Hoff, Torsten Pietsch et al. · 2020 · Journal of Clinical Oncology

PURPOSE The HIT-2000-BIS4 trial aimed to avoid highly detrimental craniospinal irradiation (CSI) in children < 4 years of age with nonmetastatic medulloblastoma by systemic chemotherapy, intraventricular methotrexate, and risk-adapted local radiotherapy. PATIENTS AND METHODS From 2001-2011, 87 patients received systemic chemotherapy and intraventricular methotrexate. Until 2006, CSI was reserved for nonresponse or progression. After 2006, local radiotherapy was introduced for nonresponders or patients with classic medulloblastoma (CMB) or large-cell/anaplastic medulloblastoma (LCA). DNA met

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Negative / Null Result ReportOpen accessMedicine

Discovery of a Unique Novel Clade of Mosquito-Associated Bunyaviruses

Marco Marklewitz, Florian Zirkel, Innocent B. Rwego et al. · 2013 · Journal of Virology

Bunyaviruses are the largest known family of RNA viruses, infecting vertebrates, insects, and plants. Here we isolated three novel bunyaviruses from mosquitoes sampled in Côte d'Ivoire, Ghana, and Uganda. The viruses define a highly…

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Negative / Null Result ReportOpen accessMedicine

DVT incidence and risk factors in critically ill patients with COVID-19

Shujing Chen, Dingyu Zhang, Tianqi Zheng et al. · 2020 · Journal of Thrombosis and Thrombolysis

Few data are available on the incidence of deep vein thrombosis (DVT) in critically ill COVID-19 with thrombosis prophylaxis. This study retrospectively included 88 patients in the ICU with critically ill COVID-19 at Jinyintan Hospital in Wuhan, China. All patients underwent compression ultrasonography for identifying DVT. Firth logistic regression was used to examine the association of DVT with sex, age, hypoalbuminemia, D-dimer, and SOFA score. The median (interquartile range [IQR]) age and SOFA score of 88 patients were 63 (55-71) years old and 5 (4-6), respectively. Despite all patients re

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Negative / Null Result ReportMedicine

Ambrisentan for sarcoidosis associated pulmonary hypertension.

Marc A. Judson, Kristin B. Highland, Soon-Ho Kwon et al. · 2011 · PubMed

BACKGROUND: Sarcoidosis associated pulmonary hypertension (SAPH) is associated with significant morbidity and mortality. There is a paucity of information concerning therapy for this condition. METHODS: We performed a prospective,…

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Negative / Null Result ReportOpen accessMedicine

Partial Aortic Occlusion for Cerebral Perfusion Augmentation

Ashfaq Shuaib, Natan M. Bornstein, Hans‐Christoph Diener et al. · 2011 · Stroke

BACKGROUND AND PURPOSE: Fewer than 5% of patients with acute ischemic stroke are currently treated, and there is need for additional treatment options. A novel catheter treatment (NeuroFlo) that increases cerebral blood flow was tested to…

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Negative / Null Result ReportOpen accessMedicine

Low rates of antibiotic resistance and infectious mortality in a cohort of high-risk hematology patients: A single center, retrospective analysis of blood stream infection

Jason R. Conn, Elizabeth Catchpoole, Naomi Runnegar et al. · 2017 · PLoS ONE

Febrile neutropenia (FN) is a medical emergency and can represent a life-threatening complication for hematology patients treated with intensive chemotherapy regimens. In clinical practice, the diagnostic yield of blood cultures and other investigations which aim to identify a causative organism or site of infection is low. We have retrospectively examined all blood cultures collected in a "real world" cohort of patients receiving chemotherapy for acute leukemia and patients with aggressive lymphoma treated with Hyper-CVAD/MTX-cytarabine, at a single tertiary center over a five-year period. In

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Negative / Null Result ReportOpen accessMedicine

Evidence of advanced stage colorectal cancer with longer diagnostic intervals: a pooled analysis of seven primary care cohorts comprising 11 720 patients in five countries

Marie Louise Tørring, Peter Murchie, William Hamilton et al. · 2017 · British Journal of Cancer

BACKGROUND: The benefits from expedited diagnosis of symptomatic cancer are uncertain. We aimed to analyse the relationship between stage of colorectal cancer (CRC) and the primary and specialist care components of the diagnostic interval.…

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Negative / Null Result ReportOpen accessMedicine

Phase III Trial Adding Vincristine-Topotecan-Cyclophosphamide to the Initial Treatment of Patients With Nonmetastatic Ewing Sarcoma: A Children's Oncology Group Report

Patrick J. Leavey, Nadia N. Laack, Mark D. Krailo et al. · 2021 · Journal of Clinical Oncology

PURPOSE The primary aim of this phase III randomized trial was to test whether the addition of vincristine, topotecan, and cyclophosphamide (VTC) to interval compressed chemotherapy improved survival outcomes for patients with previously…

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Negative / Null Result ReportOpen accessMedicine

Cardiovascular events in acute coronary syndrome patients with peripheral arterial disease treated with ticagrelor compared with clopidogrel: Data from the PLATO Trial

Manesh R. Patel, Richard C. Becker, Daniel Wojdyla et al. · 2014 · European Journal of Preventive Cardiology

AIMS: To determine the effect of ticagrelor compared to clopidogrel in patients with peripheral artery disease (PAD) and acute coronary syndromes (ACS). METHODS AND RESULTS: PLATO (n = 18,624) was a multicentre, double-blind, randomized…

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Negative / Null Result ReportMedicine

Clonal expansion of hepatocytes with a selective advantage occurs during all stages of chronic hepatitis B virus infection

Thomas Tu, William S. Mason, Andrew D. Clouston et al. · 2015 · Journal of Viral Hepatitis

Hepatocyte clone size was measured in liver samples of 21 patients in various stages of chronic hepatitis B virus (HBV) infection and from 21 to 76 years of age. Hepatocyte clones containing unique virus-cell DNA junctions formed by the…

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Negative / Null Result ReportOpen accessMedicine

The Mediterranean diet in relation to mortality and CVD: a Danish cohort study

Gianluca Tognon, Lauren Lissner, Ditte Sæbye et al. · 2013 · British Journal Of Nutrition

The aim of the present study was to determine whether the Mediterranean Diet Score (MDS) is associated with reduced total mortality, cardiovascular incidence and mortality in a Danish population. Analyses were performed on 1849 men and…

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Negative / Null Result ReportOpen accessMedicine

Mid-Gestational Maternal Free Thyroxine Concentration and Offspring Neurocognitive Development at Age Two Years

Wendy Y. Craig, Walter C. Allan, Edward M. Kloza et al. · 2011 · The Journal of Clinical Endocrinology & Metabolism

CONTEXT: Lower neurocognitive development scores at age 2 yr have been reported in association with euthyroid hypothyroxinemia during early pregnancy. OBJECTIVE: The objective of this study was to further explore this association with…

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Negative / Null Result ReportOpen accessMedicine

A retrospective epidemiologic study to define risk factors, microbiology, and clinical outcomes of infective endocarditis in a large tertiary-care teaching hospital

Anahita Mostaghim, Hoi Yee Annie Lo, N.M. Khardori · 2017 · SAGE Open Medicine

Objective: This study aims to define risk factors as well as their association with microbiology and clinical outcomes in a large US infective endocarditis population. Methods: Hospital records were searched for appropriate infective…

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Negative / Null Result ReportOpen accessMedicine

Prehospital plasma is associated with distinct biomarker expression following injury

Danielle S. Gruen, Joshua B. Brown, Francis X. Guyette et al. · 2020 · JCI Insight

BACKGROUNDPrehospital plasma improves survival in severely injured patients transported by air ambulance. We hypothesized that prehospital plasma would be associated with a reduction in immune imbalance and endothelial damage.METHODSWe sampled blood from 405 trauma patients enrolled in the Prehospital Air Medical Plasma (PAMPer) trial upon hospital admission (0 hours) and 24 hours post admission across 6 U.S. sites. We assayed samples for 21 inflammatory mediators and 7 markers associated with endothelial function and damage. We performed hierarchical clustering analysis (HCA) of these biomark

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Negative / Null Result ReportOpen accessMedicine

Mortality Benefit of Recombinant Human Interleukin-1 Receptor Antagonist for Sepsis Varies by Initial Interleukin-1 Receptor Antagonist Plasma Concentration*

Nuala J. Meyer, John P. Reilly, Brian J. Anderson et al. · 2017 · Critical Care Medicine

OBJECTIVE: Plasma interleukin-1 beta may influence sepsis mortality, yet recombinant human interleukin-1 receptor antagonist did not reduce mortality in randomized trials. We tested for heterogeneity in the treatment effect of recombinant…

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