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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

Parents perception of weight status of Mexican preschool children using different tools

M.a Cruces Souto-Gallardo, Arturo Jiménez–Cruz, Montserrat Bacardí‐Gascón · 2026 · Archivos Latinoamericanos de Nutrición

The aim of this study was to evaluate the ability of parents to estimate the weight status of preschool children attending the Instituto Mexicano del Seguro Social (IMSS) day-care centers using three different tools. A total of 100…

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Negative / Null Result ReportOpen accessMedicine

The combined risk effect among BIN1, CLU, and APOE genes in Alzheimer’s disease

Lígia Ramos dos Santos, Jucimara Ferreira Figueiredo Almeida, Lúcia Helena Sagrillo Pimassoni et al. · 2019 · Genetics and Molecular Biology

Genome-wide associations studies (GWAS) are detecting new variants associated with late-onset of Alzheimer's disease (LOAD), a multifactorial neurodegenerative disorder. The variants rs744373 BIN1, rs11136000 CLU and rs3764650 ABCA7 uncovered by GWAS led to different AD pathways, such as metabolism, trafficking and endocytosis of lipids and inflammation. However, most of the association studies did not replicate these variants with significance. This could be due to a small power effect evident when these variants are tested independently with LOAD. Therefore, we aimed to investigate whether t

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Negative / Null Result ReportOpen accessMedicine

Treat-to-Target Urate-Lowering Treatment and Cardiovascular Outcomes in Patients With Gout

Edoardo Cipolletta, Tatiana Zverkova Sandström, D. Rozza et al. · 2026 · JAMA Internal Medicine

Importance: Gout is associated with increased cardiovascular risk. Whether achieving a target serum urate level lower than 6 mg/dL with urate-lowering treatment (ULT) would reduce cardiovascular risk in patients with gout is unknown. Objectives: To evaluate the association between achieving a serum urate treatment target lower than 6 mg/dL and cardiovascular events among patients with gout who were newly prescribed ULT. Design, Setting, and Participants: This new-user cohort study using emulated target trial framework with up to 5-year follow-up was performed using primary care data from the C

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Negative / Null Result ReportOpen accessMedicine

A human tumor-immune organoid model of glioblastoma

Shivani Baisiwala, Elisa Fazzari, Matthew Li et al. · 2026 · Cell Reports

A major obstacle to identifying effective therapies for the aggressive brain tumor glioblastoma is the lack of human-specific, immunocompetent models that reflect the human tumor microenvironment. To address this, we developed the…

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Negative / Null Result ReportOpen accessMedicine

Central adiposity indices and inflammatory markers mediate the association between life’s crucial 9 and periodontitis in US adults

Jia-Jie Guo, Qi-Qi Hang, Ting Xu et al. · 2025 · Lipids in Health and Disease

BACKGROUND: Periodontitis, a chronic inflammatory disease, is closely linked to cardiovascular health. While Life's Essential 8 (LE8) evaluates cardiovascular metrics, recent recommendations suggest incorporating psychological health (PHQ-9) to form Life's Crucial 9 (LC9). However, evidence regarding the utility of LC9 in periodontal disease remains limited. METHODS: We analyzed data from 7,674 adults in the 2009-2014 NHANES cycles. LC9 scores were calculated by integrating LE8 and PHQ-9 metrics, then categorized into quartiles. The association between LC9 and periodontitis was examined using

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Negative / Null Result ReportOpen accessMedicine

Tirzepatide on obstructive sleep apnea-related cardiometabolic risk: secondary outcomes of the SURMOUNT-OSA randomized trial

Atul Malhotra, R GRUNSTEIN, Ali Azarbarzin et al. · 2026 · Nature Medicine

Obstructive sleep apnea (OSA) is associated with obesity and cardiovascular risk. The SURMOUNT-OSA master protocol comprised two, 52-week, randomized, double-blind, placebo-controlled phase 3 studies (study 1 and study 2) and demonstrated…

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Negative / Null Result ReportOpen accessMedicine

Genetic predictors of GLP1 receptor agonist weight loss and side effects

Qiaojuan Jane Su, James R. Ashenhurst, Wanwan Xu et al. · 2026 · Nature

The development of glucagon-like peptide 1 (GLP1) receptor agonists, including semaglutide and tirzepatide, has transformed the clinical management of overweight and obesity. However, substantial inter-person variability exists in both…

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Negative / Null Result ReportOpen accessMedicine

Serum Albumin Level at Intensive Care Unit Admission and Delirium Duration and Severity in Critically Ill Adults

Rosalyn Chi, Anthony J. Perkins, Yara Khalifeh et al. · 2024 · American Journal of Critical Care

BACKGROUND: Hypoalbuminemia has been associated with an increased risk of in-hospital delirium. However, the relationship between serum albumin levels and the duration and severity of delirium is not well defined. OBJECTIVE: To investigate…

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Negative / Null Result ReportOpen accessMedicine

Five‐Year Unified Risk Prediction Model for Gastric and Esophageal Cancer Based on Nationwide Health Check‐Up Data in Japan: J‐GESS Score

Kenta Watanabe, Sho Fukuda, Dai Kubota et al. · 2026 · Journal of Gastroenterology and Hepatology

BACKGROUND AND AIM: In Japan, gastric cancer (GC) and esophageal squamous cell carcinoma (ESCC) account for nearly all fatal upper gastrointestinal malignancies. A unified model that simultaneously predicts the incidence of these two…

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Negative / Null Result ReportOpen accessMedicine

Gut Microbiota Dysbiosis in Endometriosis: A Potential Link to Inflammation and Disease Progression

Alexandra Irma Gabriela Bauşic, Francesca Scurtu, Andrei Manu et al. · 2025 · International Journal of Molecular Sciences

Endometriosis is a complex gynaecological disorder characterised by the presence of endometrial-like tissue outside the uterus, leading to chronic inflammation, pain, and infertility. Recent research suggests that gut microbiota may play a crucial role in the pathogenesis and progression of endometriosis by modulating immune responses and oestrogen metabolism. This study investigates the intestinal microbiota composition in women with endometriosis and its potential as a disease diagnosis and severity biomarker. Stool samples from nine patients diagnosed with endometriosis were analysed using

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Negative / Null Result ReportOpen accessMedicine

Conduction System vs Biventricular Pacing in Heart Failure

André Zimerman, Alexander Dal Forno, Luis E. Rohde et al. · 2026 · JAMA Cardiology

Importance: Conduction system pacing (CSP) is a promising and potentially cost-effective alternative to biventricular pacing (BiVP) in patients with heart failure with reduced ejection fraction (HFrEF) and left bundle-branch block (LBBB), but its impact on heart failure (HF) outcomes remains uncertain. Objective: To compare CSP vs BiVP on an HF-related outcome in patients with HFrEF and LBBB. Design, Setting, and Participants: PhysioSync-HF (Conduction System Pacing Versus Biventricular Resynchronization in Patients With Chronic Heart Failure) was an investigator-initiated, multicenter, noninf

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Negative / Null Result ReportOpen accessMedicine

The Effects of Disease-Modifying Antirheumatic Drugs on Cardiovascular Risk in Inflammatory Joint Diseases: Current Evidence and Uncertainties

Olena Garmish, Svitlana Smiyan, Fedir Hladkykh et al. · 2025 · Vascular Health and Risk Management

Patients with inflammatory joint diseases, including rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis, have an elevated risk of cardiovascular complications due to systemic inflammation, immune-mediated endothelial…

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Negative / Null Result ReportOpen accessMedicine

Exercise blood pressure relative to fitness and cardiovascular outcomes: the EXERTION study

Martin G Schultz, Petr Otahal, Philip Roberts-Thomson et al. · 2025 · European Heart Journal

BACKGROUND AND AIMS: A hypertensive response to exercise is independently associated with cardiovascular disease (CVD), but clinical interpretation may be confounded by aerobic capacity (fitness). The aim of this study was to determine the relationship between exercise blood pressure (BP) relative to fitness and CVD events. METHODS: Clinical exercise test records were analysed from 12 743 people (aged 53 ± 13 years, 60% male) who completed a standard exercise stress test (Bruce treadmill protocol, stages 1-4) at six Australian hospitals. Records were linked to administrative datasets (hospital

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Negative / Null Result ReportOpen accessMedicine

Impact of Preexisting Hepatitis C Virus Genotype 6 NS3, NS5A, and NS5B Polymorphisms on theIn VitroPotency of Direct-Acting Antiviral Agents

Fiona McPhee, Joseph Ueland, Vincent Vellucci et al. · 2019 · Antimicrobial Agents and Chemotherapy

[tested DAAs] of >5,000 nM) and were detected in evaluated GT-6b and -6f sequences. NS5A-L28A-R30A, observed in GT-6r, did not replicate. In conclusion, HCV GT-6b, GT-6f, and GT-6r sequences harbored highly resistant RASs to all evaluated…

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Negative / Null Result ReportOpen accessMedicine

Leveraging radiotherapy to improve immunotherapy outcomes: rationale, progress and research priorities

Faith Hartley, Martin A. Ebert, Alistair Cook · 2025 · Clinical & Translational Immunology

The most successful immunotherapies for solid malignancies to date, immune checkpoint inhibitors, target the essential role of T cells in antitumor immunity. However, T-cell dysfunction presents a major hindrance to treatment efficacy, warranting research into combined treatment strategies for improving outcomes. The use of radiotherapy for this purpose has garnered much interest. Preclinical study has established that radiotherapy activates various immune mechanisms to improve T-cell activation, localisation and function within tumors, which improves response to immune checkpoint inhibitors.

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Negative / Null Result ReportMedicine

Should we use automated external defibrillators in hospital wards?

Mélissa De Regge, Koenraad G. Monsieurs, K. Vandewoude et al. · 2012 · PubMed

Automated external defibrillators (AEDs) have shown to improve survival after cardiopulmonary arrest (CPA) in many, but not all clinical settings. A recent study reported that the use of AEDs in-hospital did not improve survival. The…

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Negative / Null Result ReportMedicine

Different organ-specific response to nivolumab to determine the survival outcome of patients with advanced hepatocellular carcinoma (aHCC).

Han Sang Kim, Jung Yong Hong, Jaekyung Cheon et al. · 2020 · Journal of Clinical Oncology

4584 Background: Previously, two phase III clinical trials of immune checkpoint inhibitors (ICI) failed to meet their primary endpoints, leading to doubts regarding the clinical activity of ICI monotherapy in patients with aHCC. Here, we…

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Negative / Null Result ReportOpen accessMedicine

Molecular mechanisms underlying the abscopal effect induced by radiotherapy and its synergistic translational potential with immunotherapy

Xinyi Chen, Mu Yang, Yongbiao Huang et al. · 2025 · Therapeutic Advances in Medical Oncology

Abscopal immunity—the regression of distant, non-irradiated lesions after localized radiotherapy (RT)—signals conversion of focal DNA damage into systemic antitumor immunity. This review advances a unifying three-stage…

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Negative / Null Result ReportOpen accessMedicine

Rotational Projection Errors in Coronal Knee Alignment on Weight-Bearing Whole-Leg Radiographs: A 3D CT Reference Across CPAK Morphotypes

Igor Strahovnik, Andrej Strahovnik, Samo K. Fokter · 2025 · Bioengineering

Whole-leg radiographs (WLRs) are widely used to assess coronal alignment before total knee arthroplasty (TKA), but may be inaccurate in patients with atypical morphotypes or malrotation. This study evaluated the discrepancy between WLR and 3D computed tomography (CT) scans across coronal plane alignment of the knee (CPAK) morphotypes and introduced a novel projection index—the femoral notch projection ratio (FNPR). In CPAK III knees, 19% of cases exceeded a clinically relevant threshold (>3° difference), prompting investigation of underlying projection factors. In 187 knees, coronal angles—

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Negative / Null Result ReportOpen accessMedicine

Pulmonary Effects of Sustained Periods of High-G Acceleration Relevant to Suborbital Spaceflight

Ross D. Pollock, Caroline J. Jolley, N. Abid et al. · 2021 · Aerospace Medicine and Human Performance

Abstract BACKGROUND: Members of the public will soon be taking commercial suborbital spaceflights with significant G x (chest-to-back) acceleration potentially reaching up to 6 G x . Pulmonary physiology is gravity-dependent and is likely…

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Negative / Null Result ReportOpen accessMedicine

Data-driven profiles of attention-deficit/hyperactivity disorder using objective and ecological measures of attention, distractibility, and hyperactivity

Pilar Fernández‐Martín, Rocío Rodríguez‐Herrera, Rosa Cánovas et al. · 2023 · European Child & Adolescent Psychiatry

In the past two decades, the traditional nosology of attention-deficit/hyperactivity disorder (ADHD) has been criticized for having insufficient discriminant validity. In line with current trends, in the present study, we combined a data-driven approach with the advantages of virtual reality aiming to identify novel behavioral profiles of ADHD based on ecological and performance-based measures of inattention, impulsivity, and hyperactivity. One hundred and ten Spanish-speaking participants (6-16 years) with ADHD (medication-naïve, n = 57) and typically developing participants (n = 53) complete

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Negative / Null Result ReportOpen accessMedicine

Pharmacological Treatment of Intermittent Claudication Does Not Have a Significant Effect on Gait Impairments During Claudication Pain

Jennifer M. Yentes, Jessie M. Huisinga, Sara A. Myers et al. · 2012 · Journal of Applied Biomechanics

Peripheral arterial disease (PAD) is a manifestation of atherosclerosis resulting in intermittent claudication (IC) or leg pain during physical activity. Two drugs (cilostazol and pentoxifylline) are approved for treatment of IC. Our…

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Negative / Null Result ReportOpen accessMedicine

Significant association factors of bone mineral density in Taiwan adults

Yuh‐Feng Wang, Tzyy‐Ling Chuang, Mei‐Hua Chuang et al. · 2019 · Tzu Chi Medical Journal

OBJECTIVE: To examine the biofactors associated with bone mineral density (BMD) in southern Taiwanese adults. MATERIALS AND METHODS: The medical records of 3242 adults who underwent health examinations between June 2014 and February 2018…

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Negative / Null Result ReportOpen accessMedicine

Alexithymia and the Evaluation of Emotionally Valenced Scenes

Sarah N. Rigby, Lorna S. Jakobson, Pauline M. Pearson et al. · 2020 · Frontiers in Psychology

Alexithymia is a personality trait characterized by difficulties identifying and describing feelings (DIF and DDF) and an externally-oriented thinking style (EOT). The primary aim of the present study was to investigate links between alexithymia and the evaluation of emotional scenes. We also investigated whether viewers’ evaluations of emotional scenes were better predicted by specific alexithymic traits or by individual differences in sensory processing sensitivity (SPS). Participants (N = 106) completed measures of alexithymia and SPS along with a task requiring speeded judgments of the ple

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Negative / Null Result ReportOpen accessMedicine

Kinetics of the West Nile virus induced transcripts of selected cytokines and Toll-like receptors in equine peripheral blood mononuclear cells

Muhammad Jasim Uddin, Willy W. Suen, Angela M. Bosco‐Lauth et al. · 2016 · Veterinary Research

West Nile virus (WNV) is one of the most common causes of epidemic viral encephalitis in horses worldwide. Peripheral blood mononuclear cells (PBMCs) are amongst the first to encounter the virus following a mosquito bite. This study aimed to elucidate the transcription kinetics of cytokine, Toll-like receptor (TLRs) and TLRs-associated genes following WNV challenge of equine PBMCs. PBMCs were challenged with an Australian strain of WNV (WNVNSW2011) and transcriptomes were quantified at 2, 6, 12 and 24 h post-infection (pi) using qRT-PCR. Type I and II interferons (IFNα, β and γ) mRNA transcrip

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Negative / Null Result ReportOpen accessMedicine

Devimistat plus chemotherapy vs chemotherapy alone for older relapsed or refractory patients with AML: results of the ARMADA trial

Timothy S. Pardee, Bayard L. Powell, Richard A. Larson et al. · 2024 · Blood Neoplasia

Acute myeloid leukemia (AML) is an aggressive cancer of the myeloid lineage. Outcomes in older patients are poor with high rates of resistant and relapsed disease. Devimistat is a lipoic acid analog that inhibits mitochondrial metabolism.…

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Negative / Null Result ReportMedicine

Marijuana and Workplace Safety: An Examination of Urine Drug Tests

James W. Price · 2014 · Journal of Addictive Diseases

Although the decriminalization of recreational marijuana and medical marijuana laws provide a compassionate answer for treatment-related issues in patients' lives, they leave questions open as to the impact on other realms of life, such as…

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Negative / Null Result ReportMedicine

Differential susceptibility to effects of the home environment on motor developmental outcomes of preschool children: low birthweight status as a susceptibility factor

Jennifer Chun-Li Wu, Tung‐liang Chiang · 2015 · Early Child Development and Care

Low birthweight (LBW) children tend to have higher risks of developmental problems. According to differential susceptibility hypothesis, these putatively vulnerable children may also disproportionately benefit from positive environmental…

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