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Failure-mode index

Search what already failed

A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.

697 results in Negative / Null Result Report for "aging" · page 15 of 24

Negative / Null Result ReportOpen accessMedicine

Body composition and muscle health changes after providing vascular imaging results in older adults: secondary analysis of a randomised controlled trial.

Dalla Via J, Radavelli-Bagatini S, Sim M et al. · 2026 · Aging clinical and experimental research

Background Provision of vascular imaging results has been investigated to prompt changes towards healthy lifestyle behaviours, but effects on body composition and muscle health are unknown. Aim This secondary analysis of a 12-week…

View details →DOI: 10.1007/s40520-026-03335-1
Negative / Null Result ReportOpen accessMedicine

The impact of CYP2D6 on donepezil concentration and its lack of effect on the treatment response and adverse effect in Korean patients with Alzheimer's disease.

Kim TE, Bae JW, Hong S et al. · 2025 · The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology

Donepezil, an acetylcholinesterase inhibitor, is widely used for managing the symptoms of Alzheimer's disease (AD), yet its clinical response varies widely among individuals. This study aims to investigate the influence of CYP2D6 genetic…

View details →DOI: 10.4196/kjpp.24.239
Negative / Null Result ReportOpen accessMedicine

Senile Cataract Formation Does Not Affect Crystalline Lens Thickness.

López-de la Rosa A, Díez-Montero C, Martínez-Plaza E et al. · 2024 · Ophthalmology and therapy

Introduction Characterizing lens thickness (LT) in patients with cataracts is important for better understanding the lens aging process and for designing new intraocular lens power formulas. This study aimed to analyze the influence of…

View details →DOI: 10.1007/s40123-024-00882-6
Negative / Null Result ReportOpen accessMedicine

Opioidergic modulation of monetary incentive delay fMRI responses.

Turton S, Hawkins PCT, Muller-Pollard C et al. · 2025 · Psychopharmacology

Rationale It is hypothesised that modulation of striatal dopaminergic signalling plays a key role in the rewarding effects of opioids. The monetary incentive delay (MID) task is a functional magnetic resonance imaging (fMRI) paradigm used…

View details →DOI: 10.1007/s00213-025-06753-7
Negative / Null Result ReportMedicine

For Tuberculosis, Not "To Screen or Not to Screen?" but "Who?" and "How?"

Farhat MR, Jacobson KR · 2024 · Clinical infectious diseases : an official publication of the Infectious Diseases Society of America

Active case finding leveraging new molecular diagnostics and chest X-rays with automated interpretation algorithms is increasingly being developed for high-risk populations to drive down tuberculosis incidence. We consider why such an…

View details →DOI: 10.1093/cid/ciae058
Negative / Null Result ReportOpen accessMedicine

Real-world effectiveness of antibiotics in addition to oral corticosteroids for managing asthma exacerbations in adults.

Mommers I, Mubarik S, van Boven JFM et al. · 2025 · BMJ open respiratory research

Background Antibiotics are widely used to manage acute asthma exacerbations, despite little evidence for their effectiveness. This study assesses the added value of antibiotics alongside oral corticosteroids (OCSs) in treating asthma…

View details →DOI: 10.1136/bmjresp-2025-003506
Negative / Null Result ReportMedicine

Pathways to Well-Being of Chinese Older Adults: The Roles of Socioeconomic Status, Health, Recreation, and Number of Children.

Zhiping N, Yuanyuan Y, Qichun Z et al. · 2025 · Journal of applied gerontology : the official journal of the Southern Gerontological Society

With the acceleration of China's aging society, how to enhance the subjective well-being of older adults has become a core issue of concern. This study aims to explore the influence mechanisms of socioeconomic status, health, recreation,…

View details →DOI: 10.1177/07334648251409958
Negative / Null Result Report

Does the Rating of Care Differ According to Symptoms When Palliative Care Is Provided at the End of Life? Insights from SHARE Data Before and During the COVID-19 Pandemic

Cohen L, Laferrère A · 2025 · Preprint

Palliative care (PC) is a multidimensional approach to end-of-life care aimed at alleviating suffering and enhancing the quality of life for individuals and their families. A key aspect of PC is managing symptoms such as pain, dyspnea, and…

View details →DOI: 10.20944/preprints202510.1534.v1
Negative / Null Result ReportMedicine

Why humor's positive effect on memory disappears with aging.

Noël A, Picard L · 2025 · Emotion (Washington, D.C.)

Numerous studies have highlighted the beneficial effect of humor on memory in younger adults. While older adults are known to preferentially process positive information and appreciate humor, no study has investigated whether the effect of…

View details →DOI: 10.1037/emo0001519
Negative / Null Result ReportMedicine

Intraoperative biopsy challenges: Cavernous sinus meningioma mimic.

Pérez Serena A, Martínez Betancourt DP · 2026 · Neurocirugia

We report the case of a 56-year-old female patient with controlled Human Immunodeficiency Virus (HIV) who presented with binocular diplopia and a known sixth cranial nerve palsy. Imaging revealed a lesion centered in the right cavernous…

View details →DOI: 10.1016/j.neucie.2025.500739
Negative / Null Result ReportMedicine

Radiation necrosis mimicking tumor recurrence after chemoradiation for vaginal squamous cell carcinoma.

Di Noia D, Maiorano MFP, Sanasi A et al. · 2026 · Journal of gynecology obstetrics and human reproduction

Radiation necrosis is a rare but serious complication of pelvic chemoradiotherapy that may closely mimic tumor recurrence on both imaging and clinical examination. We describe the case of a 43-year-old woman with FIGO stage II vaginal…

View details →DOI: 10.1016/j.jogoh.2026.103129
Negative / Null Result ReportOpen accessMedicine

Impact of 18F-choline PET-CT or PET-MRI on surgical strategy in patients with primary hyperparathyroidism.

Carrillo Lizarazo JL, Cecchin D, Camozzi V et al. · 2025 · BJS open

Background Accurate preoperative localization is essential for successful, focused, minimally invasive surgery in primary hyperparathyroidism (PHPT). New imaging techniques have recently been proposed. This study evaluated the impact of…

View details →DOI: 10.1093/bjsopen/zraf069
Negative / Null Result ReportMedicine

Methionine PET Findings in the Diagnosis of Brain Tumors and Nontumorous Mass Lesions: A Single-Center Report on 426 Cases.

Shiba Y, Aoki K, Ohka F et al. · 2025 · AJNR. American journal of neuroradiology

Background and purpose Differentiating between a brain tumor and a nontumorous lesion remains a diagnostic challenge, particularly when conventional imaging modalities such as CT and MRI provide inconclusive results. While 11 C-methionine…

View details →DOI: 10.3174/ajnr.a8871
Negative / Null Result ReportOpen accessMedicine

Refining the role of presurgical PET/4D-CT in a large series of patients with primary hyperparathyroidism undergoing [ 18 F]Fluorocholine PET/CT.

Kaseb A, Benider H, Treglia G et al. · 2025 · European journal of clinical investigation

Background 4D-CT has garnered attention as complementary imaging for patients with primary hyperparathyroidism (pHPT). Herein we evaluated a diagnostic strategy using [ 18 F]Fluorocholine Positron Emission Tomography/Computed Tomography…

View details →DOI: 10.1111/eci.14336
Negative / Null Result ReportMedicine

Incidental Ovarian Uptake in Bone Scintigraphy.

Saber Tanha A, Hosseini S, Soltani E et al. · 2025 · Clinical nuclear medicine

Abstract A 47-year-old woman, recently diagnosed with breast cancer, underwent staging. A whole-body bone scan revealed an unexpected focal 99m Tc-MDP uptake in her right ovary. Extensive literature review suggested various malignant…

View details →DOI: 10.1097/rlu.0000000000005606
Negative / Null Result ReportMedicine

Frailty, Physical Function Impairment, and Pulmonary Function in Aging Men With and Without HIV from the Multicenter AIDS Cohort Study.

Abdo M, Kunisaki KM, Morris A et al. · 2026 · AIDS research and human retroviruses

People aging with HIV (PAWH) experience greater impairment in physical and pulmonary function than individuals aging without HIV. We examined whether baseline physical function was associated with subsequent pulmonary impairments.…

View details →DOI: 10.1177/08892229261448283
Negative / Null Result ReportMedicine

Lack of controlled studies on snakebite prevention: a rapid review.

Rodrigo C, Gnanathasan A · 2024 · Transactions of the Royal Society of Tropical Medicine and Hygiene

Globally, snakebites cause an estimated 80 000-140 000 deaths annually. While there are evidence-based recommendations for managing snakebite victims, recommendations on the prevention of snakebites are limited to expert opinions. We…

View details →DOI: 10.1093/trstmh/trad088
Negative / Null Result ReportOpen accessMedicine

A Study on the Visibility and Radiological Characteristics of a Normal Appendix in Patients Undergoing Non-contrast Computed Tomography at Teaching Hospital Jaffna, Sri Lanka.

Gobishangar S, Abiharan P, Jenil A et al. · 2026 · Cureus

Background The appendix is a vermiform structure with a variable position, length, and thickness. Imaging plays a critical role in diagnosing an inflamed appendix, with non-contrast computed tomography (NCCT) being an effective modality…

View details →DOI: 10.7759/cureus.102357
Negative / Null Result ReportOpen accessMedicine

Longitudinal Changes in Cognition and Brain Imaging in Persons With Human Immunodeficiency Virus.

Kennedy J, Cooley SA, Roman Fox J et al. · 2026 · The Journal of infectious diseases

Background As persons with human immunodeficiency virus (PWH) live longer, interactions between human immunodeficiency virus (HIV), aging, and structural brain integrity become increasingly vital for understanding cognitive disorders. This…

View details →DOI: 10.1093/infdis/jiag029
Negative / Null Result ReportOpen accessMedicine

Does mRNA-based COVID-19 vaccination in the subacute phase lead to microstructural brain changes? A prospective pilot MRI study using T1 relaxometry.

Willems R, Cappelletti M, Schüre JR et al. · 2026 · Scientific reports

Messenger ribonucleic acid (mRNA)-based vaccines delivered via lipid nanoparticles (LNP) were pivotal in managing the severe acute respiratory syndrome coronavirus (SARS-CoV-2) pandemic. While mild systemic reactions are common after…

View details →DOI: 10.1038/s41598-026-56181-6
Negative / Null Result ReportOpen accessMedicine

Association of caffeine levels with myocardial perfusion during pharmacological stress cardiac magnetic resonance imaging.

Iribarren A, Obrutu O, Maughan J et al. · 2026 · American heart journal plus : cardiology research and practice

Background Caffeine, a nonselective adenosine A2 receptor antagonist, blunts adenosine-induced coronary hyperemia. Despite recommended abstinence before adenosine stress cardiac magnetic resonance imaging (CMRi), residual caffeine may…

View details →DOI: 10.1016/j.ahjo.2025.100709
Negative / Null Result ReportMedicine

Intrinsically nonlocal metamaterials.

Ware A, LaMountain J, White RC et al. · 2026 · Nature communications

The electromagnetic response of materials serves as the foundation for a broad range of vital applications, from imaging, to sensing, to classical and quantum communications. Here we demonstrate, theoretically and experimentally, a…

View details →DOI: 10.1038/s41467-026-74396-z
Negative / Null Result ReportOpen accessMedicine

Longitudinal five-year follow-up by muscle MRI and high-resolution nerve ultrasound in hereditary neuropathies.

Vockert KL, Winter N, Kirschmann FS et al. · 2026 · Neurological research and practice

Background and aims Hereditary polyneuropathies are rare heterogeneous neurological disorders that cause progressive muscle weakness and disability. As new therapies emerge, sensitive imaging biomarkers to monitor disease progression are…

View details →DOI: 10.1186/s42466-026-00508-1