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11,309 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

Interfering With DNA Decondensation as a Strategy Against Mycobacteria

Enzo M. Scutigliani, Edwin R. Scholl, Anita E. Grootemaat et al. · 2018 · Frontiers in Microbiology

Tuberculosis is once again a major global threat, leading to more than 1 million deaths each year. Treatment options for tuberculosis patients are limited, expensive and characterized by severe side effects, especially in the case of multi-drug resistant forms. Uncovering novel vulnerabilities of the pathogen is crucial to generate new therapeutic strategies. Using high resolution microscopy techniques, we discovered one such vulnerability of Mycobacterium tuberculosis. We demonstrate that the DNA of M. tuberculosis can condense under stressful conditions such as starvation and antibiotic trea

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Negative / Null Result ReportOpen accessMedicine

Urine proteomic insights from the belimumab in lupus nephritis trial

Emma Weeding, Andrea Fava, Chandra Mohan et al. · 2022 · Lupus Science & Medicine

Objective Urine proteomic approaches have shown promise in identifying biological pathways in lupus nephritis (LN) which are not captured on renal histopathology or by measurement of proteinuria alone. We investigated how the urine…

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Negative / Null Result ReportOpen accessMedicine

Evaluation and Application of a PET Tracer in Preclinical and Phase 1 Studies to Determine the Brain Biodistribution of Minzasolmin (UCB0599)

Joël Mercier, Massimo Bani, Anny‐Odile Colson et al. · 2023 · Molecular Imaging and Biology

Abstract Purpose Minzasolmin (UCB0599) is an orally administered, small molecule inhibitor of ASYN misfolding in development as a potential disease-modifying therapy for Parkinson’s disease. Here we describe the preclinical development of a radiolabeled tracer and results from a phase 1 study using the tracer to investigate the brain distribution of minzasolmin. Procedures In the preclinical study, two radiolabeling positions were investigated on the S -enantiomer of minzasolmin (UCB2713): [ 11 C]methylamine UCB2713 ([ 11 C- N -CH 3 ]UCB2713) and [ 11 C]carbonyl UCB2713 ([ 11 C-CO]UCB2713). Ma

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Negative / Null Result ReportOpen accessMedicine

The FGA Thr312Ala polymorphism and risk of intracerebral haemorrhage in Polish and Greek populations

Jeremiasz Jagiełła, Efthimios Dardiotis, Jerzy Gąsowski et al. · 2014 · Neurologia i Neurochirurgia Polska

BACKGROUND AND PURPOSE: Spontaneous intracerebral haemorrhage (ICH) is the most fatal form of stroke with the highest morbidity and disability rate of all stroke types. Recent data suggest that the genetic background has a sizeable and…

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Negative / Null Result ReportOpen accessMedicine

Predictors of Survival, Treatment Modalities, and Clinical Outcomes of Diffuse Large B-Cell Lymphoma in Patients Older Than 70 Years Still an Unmet Medical Need in 2024 Based on Real-World Evidence

Luís Alberto de Pádua Covas Lage, Rita Novello de Vita, Lucas Bassolli de Oliveira Alves et al. · 2024 · Cancers

Background: Diffuse large B-cell lymphoma (DLBCL) especially affects the older population. Old (≥60 years) and very old age (≥80 years) DLBCL patients often present high-risk molecular alterations, lower tolerability to conventional immunochemotherapy, and poor clinical outcomes. In this scenario, attenuated therapeutic strategies, such as the R-MiniCHOP and R-MiniCHOP of the elderly regimens, have emerged for this particularly fragile population. However, the responses, clinical outcomes, and toxicities of these regimens currently remain poorly understood, mainly because these individuals are

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Negative / Null Result ReportOpen accessMedicine

Increasing Enzyme Mannose-6-Phosphate Levels but Not Miglustat Coadministration Enhances the Efficacy of Enzyme Replacement Therapy in Pompe Mice

Allyson L. Anding, Sofia Kinton, Kaitlyn Baranowski et al. · 2023 · Journal of Pharmacology and Experimental Therapeutics

Pompe disease is a rare glycogen storage disorder caused by a deficiency in the lysosomal enzyme acid α-glucosidase, which leads to muscle weakness, cardiac and respiratory failure, and early mortality. Alglucosidase alfa, a recombinant…

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Negative / Null Result ReportOpen accessMedicine

Prostate volume does not provide additional predictive value to prostate health index for prostate cancer or clinically significant prostate cancer: results from a multicenter study in China

Danfeng Xu, Rong Na, Da Huang et al. · 2020 · Asian Journal of Andrology

To evaluate whether prostate volume (PV) would provide additional predictive utility to the prostate health index (phi) for predicting prostate cancer (PCa) or clinically significant prostate cancer, we designed a prospective,…

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Negative / Null Result ReportOpen accessMedicine

Customized Prediction of Short Length of Stay Following Elective Cardiac Surgery in Elderly Patients Using a Genetic Algorithm

Joon Lee, Sapna Govindan, Leo Anthony Celi et al. · 2013 · World Journal of Cardiovascular Surgery

OBJECTIVE: To develop a customized short LOS (<6 days) prediction model for geriatric patients receiving cardiac surgery, using local data and a computational feature selection algorithm. DESIGN: Utilization of a machine learning algorithm in a prospectively collected STS database consisting of patients who received cardiac surgery between January 2002 and June 2011. SETTING: Urban tertiary-care center. PARTICIPANTS: Geriatric patients aged 70 years or older at the time of cardiac surgery. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Predefined morbidity and mortality events were collec

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Negative / Null Result ReportOpen accessMedicine

Ulinastatin did not reduce mortality in elderly multiple organ failure patients: a retrospective observational study in a single center ICU

Masatoshi Uchida, Toshikazu Abe, Kazuyuki Ono et al. · 2017 · Acute Medicine & Surgery

Aim Our aim was to evaluate the effect of ulinastatin on 28‐day mortality in patients who developed multiple organ failure ( MOF ) related to their acute illness and were admitted to the intensive care unit ( ICU ). Methods We carried out a retrospective observational study of MOF patients in a general ICU of a tertiary care hospital in Japan from January 2009 to December 2012. The primary outcome was 28‐day all‐cause mortality. Secondary outcomes were ventilator‐free days, ICU ‐free days, and vasopressor‐free days at day 28. We investigated the association between ulinastatin treatment and ou

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Negative / Null Result ReportOpen accessMedicine

Still a Place for Metoclopramide as a Prokinetic Drug in Critically Ill Patients?

Arthur R. H. van Zanten, Y. G. Van Der Meer, Willem A. Venhuizen et al. · 2015 · Journal of Parenteral and Enteral Nutrition

Neurologic adverse reactions, including extrapyramidal disorders, dyskinesia, dystonia, convulsions, hypertonia, and tremors.4 The reported occurrence of tardive dyskinesia ranges from <0.01%–23%.5 High occurrence is attributed to chronic…

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Negative / Null Result ReportOpen accessMedicine

Nonopioid vs opioid analgesics after impacted third-molar extractions

Cecile A. Feldman, Janine Fredericks-Younger, Paul J. Desjardins et al. · 2025 · The Journal of the American Dental Association

BACKGROUND: Opioids are still being prescribed to manage acute postsurgical pain. Unnecessary opioid prescriptions can lead to addiction and death, as unused tablets are easily diverted. METHODS: To determine whether combination nonopioid analgesics are at least as good as opioid analgesics, a multisite, double-blind, randomized, stratified, noninferiority comparative effectiveness trial was conducted, which examined patient-centered outcomes after impacted mandibular third-molar extraction surgery. Participants were randomized to receive 5 mg of hydrocodone with 300 mg of acetaminophen (opioi

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Negative / Null Result ReportMedicine

Radiotherapy Improves Survival of Patients With Lymphovascular Invasion in pT1b Esophageal Squamous Cell Cancer After Endoscopic Submucosal Dissection

Xu Yang, Lina Zhao, Anhui Shi et al. · 2023 · The American Journal of Gastroenterology

INTRODUCTION: Adjuvant radiotherapy is recommended for pT1b esophageal squamous cell cancer (ESCC) after endoscopic submucosal dissection (ESD). However, it is unclear whether additional radiotherapy can improve patient survival. This…

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Negative / Null Result ReportOpen accessMedicine

Should Transplantation Still Be Considered for Ph1-Negative Myeloproliferative Neoplasms in Transformation?

Mathilde Ruggiu, Bruno Cassinat, Jean‐Jacques Kiladjian et al. · 2020 · Biology of Blood and Marrow Transplantation

BCR-ABL-negative myeloproliferative neoplasms (MPNs) in transformation have a dismal prognosis, and allogeneic hematopoietic stem cell transplantation (allo-HSCT) is considered the sole curative therapeutic option. We retrospectively…

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Negative / Null Result ReportOpen accessMedicine

Relaxin Does Not Improve Angiotensin II-Induced Target-Organ Damage

Nadine Haase, Julianna Rugor, Łukasz Przybył et al. · 2014 · PLoS ONE

Relaxin is a corpus-luteum produced protein hormone with vasodilatatory, anti-fibrotic, and angiogenic properties that are opposite to angiotensin (Ang) II. We investigated whether or not relaxin ameliorates Ang II-induced target-organ damage. We used double transgenic rats harboring both human renin and angiotensinogen genes (dTGR) that develop severe hypertension, target-organ damage, and die untreated within 7-8 weeks. Recombinant relaxin at a low (26 μg/kg/d) and a high dose (240 μg/kg/d) was given to 4 week-old dTGR and age-matched Sprague-Dawley rats (SD). Systolic blood pressure increas

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Negative / Null Result ReportOpen accessMedicine

Outcomes among Hospitalized Chronic Kidney Disease Patients with COVID-19

Minesh Khatri, David M. Charytan, Sam Parnia et al. · 2021 · Kidney360

Abstract Key Points Patients with ESKD had higher crude mortality rates than those without CKD, but thiswas no longer significant after multivariate adjustment. Patients with ESKD, when directly compared with those with nondialysis CKD,…

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Negative / Null Result ReportOpen accessMedicine

4-Aminobutyrate Aminotransferase (ABAT): Genetic and Pharmacological Evidence for an Involvement in Gastro Esophageal Reflux Disease

Johan Jirholt, Bengt Åsling, Paul Hammond et al. · 2011 · PLoS ONE

Gastro-esophageal reflux disease (GERD) is partly caused by genetic factors. The underlying susceptibility genes are currently unknown, with the exception of COL3A1. We used three independent GERD patient cohorts to identify GERD susceptibility genes. Thirty-six families, demonstrating dominant transmission of GERD were subjected to whole genome microsatellite genotyping and linkage analysis. Five linked regions were identified. Two families shared a linked region (LOD 3.9 and 2.0) on chromosome 16. We used two additional independent GERD patient cohorts, one consisting of 219 trios (affected

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Negative / Null Result ReportOpen accessMedicine

“Fast track” rehabilitation after gastric cancer resection: experience with 80 consecutive cases

Jingxiang Song, Xiaohuang Tu, Bing Wang et al. · 2014 · BMC Gastroenterology

BACKGROUND: To evaluate the safety, efficacy and outcomes of fast-track rehabilitation applied to gastric cancer proximal, distal and total gastrectomy. METHODS: Eighty consecutive patients undergoing gastric cancer resection performed by a single surgeon, received perioperative multimodal rehabilitation. Demographic and operative data, gastrointestinal function, postoperative hospital stays, surgical and general complications and mortality were assessed prospectively. RESULTS: Of the 80 patients (mean age 56.3 years), 10 (12.5%) received proximal subtotal gastrectomy (Billroth I), 38 (47.5%)

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Negative / Null Result ReportOpen accessMedicine

Physicians’ knowledge, attitude, and prescribing behavior regarding stress ulcer prophylaxis in China: a multi-center study

Xiao Xuan Xing, Chen Zhu, Yan Chu et al. · 2021 · BMC Gastroenterology

BACKGROUND: Perioperative patients are at risk of developing stress ulcers (SU), which can cause clinically important bleeding. Stress ulcer prophylaxis (SUP) is widely applied to the patients in Intensive care unit (ICU) as well as the general ward, so it may lead to overmedication. However, there have been no surveys regarding SUP knowledge or prescribing habits. OBJECTIVE: Our study assessed the knowledge, attitudes, and prescribing behavior of the surgeons toward perioperative patients regarding SUP and determined factors associated with low knowledge and high level of prescribing behavior

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Negative / Null Result ReportOpen accessMedicine

The effects of amiodarone prophylaxis on cardiac dysrhythmia in acute aluminium phosphide poisoning

Mohammad Reza Beyranvand, Soleyman Farrokhi, Hassan Peyvandi et al. · 2019 · Archives of Industrial Hygiene and Toxicology

Cardiovascular toxicity is the most common cause of fatality in the first 24 hours of poisoning with aluminium phosphide (AlP). Most often manifesting itself in cardiac dysrhythmias. The aim of this study was to evaluate the benefits of amiodarone prophylaxis against cardiac dysrhythmia in 46 patients with acute AlP poisoning. They were divided in two groups of 23: one receiving amiodarone and the other not (control). The treatment group received amiodarone prophylaxis in the initial intravenous bolus dose of 150 mg, followed by a drip of 1 mg/min for six hours and then of 0.5 mg/min for eight

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Negative / Null Result ReportMedicine

Successful Multimodal Treatment for Aggressive Metastatic and Recurrent Fibrolamellar Hepatocellular Carcinoma in a Child

Arzu Okur, Eylem Pınar Eser, Güldal Yılmaz et al. · 2014 · Journal of Pediatric Hematology/Oncology

Fibrolamellar variant of hepatocellular carcinoma (FLHCC) does not have a favorable prognosis than conventional HCC, and there is no difference regarding the response to chemotherapy and the degree of surgical resectability. FLHCC commonly…

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Negative / Null Result ReportMedicine

Impact of prenatal diagnosis on the outcome of patients with a transposition of great arteries: A 24‐year population‐based study

Anne Debost‐Legrand, Lemlih Ouchchane, Christine Francannet et al. · 2015 · Birth Defects Research Part A Clinical and Molecular Teratology

BACKGROUND: Transposition of great arteries (TGA) defined as the combination of concordant atrioventricular and discordant ventriculo-arterial connections is one of the most common congenital heart defects. Prenatal diagnosis of TGA…

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Negative / Null Result ReportOpen accessMedicine

Addition of chemotherapy to intensity-modulated radiotherapy does not improve survival in stage II nasopharyngeal carcinoma patients

Fangzheng Wang, Jiang Chuner, Quanquan Sun et al. · 2018 · Journal of Cancer

In this study, we examined whether combining neoadjuvant chemotherapy (NAC) and/or concurrent chemotherapy (CC) with intensity-modulated radiotherapy (IMRT) improved survival in patients with stage II nasopharyngeal carcinoma (NPC). Two hundred forty-two stage II NPC patients were enrolled between May 2008 and April 2014 and received radical IMRT with simultaneous integrated boost technique using 6 MV photons; some patient groups also received chemotherapy every 3 weeks for 2-3 cycles. The median follow-up duration was 69 months for all patients. At the last follow-up, 18 patients had experien

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Negative / Null Result ReportMedicine

Real-world data on melanoma brain metastases and survival outcome

Sidsel Pedersen, Søren Møller, Marco Donia et al. · 2022 · Melanoma Research

Novel medical therapies have revolutionized outcome for patients with melanoma. However, patients with melanoma brain metastases (MBM) still have poor survival. Data are limited as these patients are generally excluded from clinical…

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