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Browse the failure-mode index

21,309 real negative results, null findings, and replication failures. 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

False-negative results of combined endobronchial and endoscopic ultrasound in mediastinal staging of lung cancer.

Gambuś K, Moszczyński K, Popovchenko S et al. · 2026 · Kardiochirurgia i torakochirurgia polska = Polish journal of cardio-thoracic surgery

Introduction Accurate assessment of mediastinal lymph node involvement is crucial for treatment planning in lung cancer. Combined endobronchial and endoscopic ultrasound (CUS) offers high sensitivity and negative predictive value (NPV),…

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Negative / Null Result ReportMedicine

Influence of Ongoing Antibiotic Therapy on the Detection of Pathogenic Microorganisms Using Metagenomic Next-Generation Sequencing and Blood Culture in ICU Patients.

Schroeder TH, Eliwi Alsaffan M, Stäudle H et al. · 2026 · Journal of clinical medicine

Background: Blood cultures often yield negative results in critically ill patients, particularly after antimicrobial therapy has started. Plasma metagenomic next-generation sequencing enables culture-independent pathogen detection, but its…

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Negative / Null Result ReportMedicine

Butyrate in ulcerative colitis and pouchitis: friend or foe?

Rhodes JM · 2026 · The British journal of nutrition

It is widely known that the short chain fatty acid (SFA) butyrate, generated mainly through fermentation of dietary fibre by anaerobic bacteria, has beneficial effects on health. Less widely known is that butyrate, at the concentration…

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Negative / Null Result ReportOpen accessMedicine

Impact of Blood Herpes Simplex Virus Polymerase Chain Reaction Testing in Neonatal Management of Herpes Simplex Virus Infection: An Institutional Experience.

Alvarez AM, Vega M, Valencia-Shelton F et al. · 2026 · Cureus

Background The evaluation of neonatal herpes simplex virus (HSV) includes HSV culture and/or polymerase chain reaction (PCR) of different surfaces, cerebrospinal fluid (CSF), and blood. However, the impact of blood HSV PCR for the…

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Negative / Null Result Report

Anterior middle cingulate cortex gamma-aminobutyric acid level is elevated in children with both familial and prenatal alcohol exposure-associated attention deficit hyperactivity disorder

Alger JR, Gupta I, Farkouh L et al. · 2026 · Preprint

Background Prior neuroimaging suggests brain differences between children with attention deficit hyperactivity disorder due to prenatal alcohol exposure (ADHD+PAE) and non-exposed children with ADHD due to other, e.g., familial, causes…

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Negative / Null Result ReportMedicine

The Usefulness of Antinuclear Antibody Multiplex Immunoassay for Screening of Rheumatological Diseases: A Real-World Population-Based Study.

Hijaze E, Razi T, Arbel R et al. · 2026 · Journal of clinical rheumatology : practical reports on rheumatic & musculoskeletal diseases

Objective To evaluate the diagnostic performance of BioPlex 2200 multiplex immunoassay (BI) for detecting antinuclear antibodies (ANA), compared with the gold standard, the indirect immunofluorescence assay (IIF), as a screening…

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Negative / Null Result ReportMedicine

Early computed tomography may miss main pancreatic duct injury in distal pancreatic trauma: a prospective surgically verified diagnostic accuracy study.

Tri PM, Hung NT, Liet DH et al. · 2026 · Emergency radiology

Purpose To assess the diagnostic performance of computed tomography (CT) for predicting main pancreatic duct injury in surgically explored patients with distal pancreatic trauma. Methods We conducted a prospective single-center diagnostic…

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Negative / Null Result ReportMedicine

[Evaluation of the screening performance of ultrasound for fatty liver using transient elastography in the elderly population of Shanghai communities].

Wei XT, Zhu LY, Wu YL et al. · 2026 · Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi

Objective: To evaluate the screening performance and related factors of ultrasound for hepatic steatosis in community-based elderly populations using controlled attenuation parameter (CAP) measured by transient elastography as the…

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Negative / Null Result Report

Diagnostic Accuracy of Magnetic Resonance Imaging versus Computed Tomography for Lumbar Spondylolysis in Patients with Chronic Low Back Pain: A Single-Center Retrospective Study

TEZCE A, DURMUŞ E · 2026 · Preprint

Abstract Purpose The objective of this study is to compare the diagnostic efficacy of Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) in detecting lumbar spondylolysis among patients presenting with chronic low back pain, and…

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Negative / Null Result ReportOpen accessMedicine

Diagnostic and therapeutic impact of PCR in uveitis: real-world data from intraocular fluid analysis of 45 uveitis patients in a tertiary referral center in Turkey.

Zorlutuna Kaymak N, Pekel İ, Demir Tekol S et al. · 2026 · BMC ophthalmology

Purpose To evaluate the diagnostic utility and real-world clinical impact of polymerase chain reaction (PCR) analysis of aqueous humor (AH) and vitreous samples in patients with uveitis including suspected infectious and mixed…

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Negative / Null Result ReportOpen accessMedicine

The application value and limitations of metagenomic detection technology based on cerebrospinal fluid samples in suspected central nervous system infection: a retrospective study.

Feng Q, Liu B, Liu H et al. · 2025 · Frontiers in microbiology

Background Accurately diagnosing central nervous system (CNS) infections remains challenging. This study aimed to evaluate the effectiveness of metagenomic next-generation sequencing (mNGS) in diagnosing suspected CNS infections and its…

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Failed Experiment ReportOpen accessMedicine

Atypical superotemporal iris and retinal coloboma.

Patterson KN, Reynolds MM, Lueder GT · 2026 · American journal of ophthalmology case reports

Purpose To report our findings in a patient with an atypical case of supertemporal iris and retinal coloboma, and to assess its systemic associations and potential genetic causes. Observations A premature female infant born at 31 weeks…

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Negative / Null Result ReportOpen accessMedicine

Smear-positive Pulmonary Tuberculosis with False-negative Loop-mediated Isothermal Amplification and T-SPOT.TB Assays.

Tsutsumi Y, Nagasaki T, Muraki M et al. · 2026 · Internal medicine (Tokyo, Japan)

Rapid molecular and immunological assays for tuberculosis, including loop-mediated isothermal amplification (LAMP) and T-SPOT.TB assays, may yield false-negative results. We herein report a 62-year-old immunocompetent man with a productive…

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