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11,406 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

Multimodal Treatment in Metastatic Colorectal Cancer (mCRC) Improves Outcomes—The University College London Hospital (UCLH) Experience

Nalinie Joharatnam‐Hogan, William Wilson, Kai Keen Shiu et al. · 2020 · Cancers

Background: Despite notable advances in the management of metastatic colorectal cancer (mCRC) over the last two decades, treatment intent in the vast majority of patients remains palliative due to technically unresectable disease, extensive disease, or co-morbidities precluding major surgery. Up to 30% of individuals with mCRC are considered potentially suitable for primary or metastasis-directed multimodal therapy, including surgical resection, ablative techniques, or stereotactic radiotherapy (RT), with the aim of improving survival outcomes. We reviewed the potential benefits of multimodal

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Negative / Null Result ReportOpen accessMedicine

Significant Association between the T2 Values of Vertebral Cartilage Endplates and Pfirrmann Grading

Yi Cao, Qing‐wei Guo, Ye‐da Wan · 2020 · Orthopaedic Surgery

Objective The T2 value of lumbar cartilage endplates was measured using the T2 mapping imaging technique, aiming to explore the correlation between the T2 value and Pfirrmann grading of intervertebral discs. Methods A total of 130 patients with lumbar spine MR examination due to persistent low back pain were enrolled, including 71 men and 59 women (age: 21–63 years). Lumbar Modic changes and Schmorl nodules were recognized by conventional T1WI and T2WI images in 49 patients, and these patients were excluded from the study. A total of 81 patients were enrolled in this study, including 45 men (4

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Negative / Null Result ReportOpen accessMedicine

Long-term variations of arterial stiffness in patients with obesity and obstructive sleep apnea treated with continuous positive airway pressure

Louis-Marie Galerneau, Sébastien Bailly, Jean‐Christian Borel et al. · 2020 · PLoS ONE

BACKGROUND: Obstructive sleep apnea (OSA) is associated with cardiovascular co-morbidities and mortality. Arterial stiffness is an independent predictor of cardiovascular risk and mortality, and is influenced by the presence of OSA and related comorbidities. There is a paucity of data regarding long-term evolution of arterial stiffness in CPAP-treated OSA patients. We aimed to prospectively study long term PWV variations and determinants of PWV deterioration. METHODS: In a prospective obese OSA cohort, at time of diagnosis and after several years of follow-up we collected arterial stiffness me

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Negative / Null Result ReportOpen accessMedicine

Bioinspired Intervertebral Disc with Multidirectional Stiffness Prepared via Multimaterial Additive Manufacturing

Guangsheng Song, Zhihui Qian, Xiangyu Liu et al. · 2023 · Advanced Functional Materials

Abstract Degenerative disc disease (DDD) has become a significant public health issue worldwide. This can result in loss of spinal function affecting patient health and quality of life. Artificial total disc replacement (A‐TDR) is an…

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Negative / Null Result ReportOpen accessMedicine

Bronchoalveolar lavage fluid and serum 1,3-β-d-glucan testing for invasive pulmonary aspergillosis diagnosis in hematological patients: the role of factors affecting assay performance

Barbora Weinbergerová, Tomáš Kabut, Iva Kocmanová et al. · 2020 · Scientific Reports

Invasive fungal disease (IFD) early diagnosis improves hematological patient survival. Non-culture-based methods may reduce diagnostic time to identify IFD. As complex data on the value of 1,3-β-D-glucan (BDG) from bronchoalveolar lavage fluid (BALF) compared to serum for the most frequent invasive pulmonary aspergillosis (IPA) diagnosis are scarce, particularly including evaluation of potential factors adversely affecting BDG assay, we provided prospective single-center analysis evaluating 172 episodes of pulmonary infiltrates with BDG detection in BALF and serum samples collected in parallel

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Negative / Null Result ReportOpen accessMedicine

Impact of subglottic secretion drainage on microaspiration in critically ill patients: a prospective observational study

Guillaume Millot, Pauline Boddaert, Erika Parmentier-Decrucq et al. · 2018 · Annals of Translational Medicine

Background: Microaspiration is a major factor in ventilator-associated pneumonia (VAP) pathophysiology. Subglottic secretion drainage (SSD) aims at reducing its incidence. Methods: Single-center prospective observational study, performed…

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Negative / Null Result ReportOpen accessMedicine

Impact of the Glucagon Assay When Assessing the Effect of Chronic Liraglutide Therapy on Glucagon Secretion

Caroline K. Kramer, Bernard Zinman, Haysook Choi et al. · 2017 · The Journal of Clinical Endocrinology & Metabolism

Context: Glucagon-like peptide-1 agonists acutely lower serum glucagon. However, in the Liraglutide and β-Cell Repair (LIBRA) Trial, 48-week treatment with liraglutide yielded lower/unchanged fasting glucagon but, surprisingly, enhanced…

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Negative / Null Result ReportOpen accessMedicine

The associations of long-term physical activity in adulthood with later biological ageing and all-cause mortality – a prospective twin study

Anna Kankaanpää, Asko Tolvanen, Laura Joensuu et al. · 2025 · European Journal of Epidemiology

OBJECTIVES: The association between leisure-time physical activity (LTPA) and a lower risk of mortality is susceptible to bias from multiple sources. We investigated the potential of biological ageing to mediate the association between long-term LTPA and mortality and whether the methods used to account for reverse causality affect the interpretation of this association. METHODS: Study participants were twins from the older Finnish Twin Cohort (n = 22,750; 18-50 years at baseline). LTPA was assessed using questionnaires in 1975, 1981 and 1990. The mortality follow-up lasted until 2020 and biol

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Negative / Null Result ReportOpen accessMedicine

Coffee and Tea Intake, Dementia Risk, and Cognitive Function

Yu Zhang, Yuxi Liu, Yanping Li et al. · 2026 · JAMA

Importance: Evidence linking coffee and tea to cognitive health remains inconclusive, and most studies fail to differentiate caffeinated from decaffeinated coffee. Objective: To investigate associations of coffee and tea intake with…

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Negative / Null Result ReportOpen accessMedicine

Abnormalities of lipid metabolism in the progression and treatment of depression

Xinchi Luan, Xuezhe Wang, Ying Shi et al. · 2025 · Frontiers in Psychiatry

Depression represents a global health challenge with complex etiology and significant societal impact. Recent advancements reveal a critical role of lipid metabolism dysregulation in the pathogenesis and severity of depressive disorders. This review elucidates the impact of lipid imbalance on depression highlighting how dyslipidemia not only makes individuals prone to depression but also exacerbates the progression of depression (including the occurrence of some comorbidities of depression). On this basis, we have summarized that abnormal lipid metabolism may serve as a diagnostic and therapeu

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Negative / Null Result ReportOpen accessMedicine

Effects of regular exercise on neutrophil functions, oxidative stress parameters and antibody responses against 4-hydroxy-2-nonenal adducts in middle aged humans

Soichiro Sasaki, Takayuki Matsuura, Rei Takahashi et al. · 2026 · PubMed

Regular exercise has recognized health benefits, partly because it reportedly lowers the levels of the oxidation products of proteins and DNA at rest, in contrast with the effect of acute exercise. However, when we compared oxidative…

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Negative / Null Result ReportOpen accessMedicine

SHAP-based interpretable machine learning for injury risk prediction in university football players: a multi-dimensional data analysis approach

Jiacheng Ma, Shengrui Liu, Yuting Pei · 2025 · Scientific Reports

Sports injury prediction is crucial for university football player health, yet existing research predominantly focuses on professional athletes and lacks interpretability. Using the Kaggle "University Football Injury Prediction Dataset"…

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Negative / Null Result ReportOpen accessMedicine

Cancer cachexia: molecular basis and therapeutic advances

Yuting Tan, Rui Xue, Yuwei Pan et al. · 2026 · Signal Transduction and Targeted Therapy

The dynamic interplay between neoplastic cells and the host has been increasingly recognized as important players in the pathogenesis of cancer cachexia, a syndrome affecting ~50-80% of cancer patients with various incidences of different types of malignancies. Despite its prevalence, a comprehensive understanding of cancer cachexia progression, with a holistic view at the cross-organismal, cellular and molecular levels, remains elusive. In this review, we undertake an in-depth exploration of the relevant target organs and their regulatory roles in cancer cachexia, with a particular focus on m

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Negative / Null Result ReportMedicine

The effects of prehospital TXA on mortality and neurologic outcomes in patients with traumatic intracranial hemorrhage: A subgroup analysis from the prehospital TXA for TBI trial

Susan Rowell, Eric N. Meier, Tatiana Hoyos Gomez et al. · 2024 · The Journal of Trauma: Injury, Infection, and Critical Care

BACKGROUND: In the prehospital tranexamic acid (TXA) for traumatic brain injury (TBI) trial, TXA administered within 2 hours of injury in the out-of-hospital setting did not reduce mortality in all patients with moderate/severe traumatic…

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Negative / Null Result ReportOpen accessMedicine

Relationship between central autonomic effective connectivity and heart rate variability: A Resting-state fMRI dynamic causal modeling study

Liangsuo Ma, Larry Keen, Joel L. Steinberg et al. · 2024 · NeuroImage

• Resting- state fMRI data were acquired from 34 healthy participants. • Effective connectivities (ECs) associated with HRV and heart rate were investigated. • Regression DCM and ICA were used to identify most relevant network nodes. • ECs…

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Negative / Null Result ReportOpen accessMedicine

Safety of Avacopan for the Treatment of Antineutrophil Cytoplasmic Antibody–Associated Vasculitis: Combined Data From Three Clinical Trials

Peter A. Merkel, Michael George, Huibin Yue et al. · 2025 · ACR Open Rheumatology

OBJECTIVE: This study aimed to report the safety of avacopan, an oral selective complement C5a receptor antagonist, using pooled data from clinical trials in patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis…

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Negative / Null Result ReportOpen accessMedicine

Lack of replication of higher genetic risk load in men than in women with systemic lupus erythematosus

Elisa Alonso‐Perez, Marian Suarez-Gestal, Manuel Calaza et al. · 2014 · Arthritis Research & Therapy

INTRODUCTION: We aimed to replicate a recent study which showed higher genetic risk load at 15 loci in men than in women with systemic lupus erythematosus (SLE). This difference was very significant, and it was interpreted as indicating that men require more genetic susceptibility than women to develop SLE. METHODS: Nineteen SLE-associated loci (thirteen of which are shared with the previous study) were analyzed in 1,457 SLE patients and 1,728 healthy controls of European ancestry. Genetic risk load was calculated as sex-specific sum genetic risk scores (GRS(s)). RESULTS: Our results did not r

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Negative / Null Result ReportOpen accessMedicine

Feasibility of two levels of protein intake in patients with colorectal cancer: findings from the Protein Recommendation to Increase Muscle (PRIMe) randomized controlled pilot trial

Katherine L. Ford, Michael B. Sawyer, Sunita Ghosh et al. · 2024 · ESMO Open

•Patients were able to increase and sustain dietary protein intake from preintervention levels.•Over one-half of patients in the 2.0 g/kg/day group maintained or gained MM with a 12-week targeted nutrition intervention.•This work…

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Negative / Null Result ReportOpen accessMedicine

Efficacy, public health impact and optimal use of the Takeda dengue vaccine

Bethan Cracknell Daniels, Neil M. Ferguson, Ilaria Dorigatti · 2025 · Nature Medicine

Dengue is the most common arboviral infection, causing substantial morbidity and mortality globally. The licensing of Qdenga, a second-generation vaccine developed by Takeda Pharmaceuticals, is therefore timely, but the potential public health impact of vaccination across transmission settings needs to be evaluated. To address this, we characterized Qdenga's efficacy profile using mathematical models calibrated to published clinical trial data and estimated the public health impact of routine vaccine use. We find that efficacy against both virologically confirmed dengue and hospitalization dep

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