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Browse the failure-mode index

12,266 real negative results, null findings, and replication failures in Medicine. 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 ReportMedicine

Evaluating direct amplification from viral transport medium for SARS-CoV-2 detection, strain typing, and angiotensin-converting enzyme genotyping and expression assays.

Schilter KF, Kapoor S, Smith BA et al. · 2024 · Laboratory medicine

Objective The aim of this study was to compare the performance of direct amplification of viral nucleic acid from transport medium to extracted nucleic acid for polymerase chain reaction (PCR), sequencing, and genotyping applications.…

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Failed Experiment ReportOpen accessMedicine

Case Report: A case of occult insulinoma localized by [<sup>18</sup>F] FB (ePEG12)12-exendin-4 positron emission tomography with negative findings of selective arterial calcium stimulation test.

Sakaki K, Murakami T, Fujimoto H et al. · 2025 · Frontiers in endocrinology

Background Insulinomas, the most common functional pancreatic neuroendocrine tumors, cause hypoglycemia due to excessive insulin production, leading to severe clinical symptoms like coma or death. Resection surgery is the major curative…

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Failed Experiment ReportOpen accessMedicine

Sub-microscopic schistosomiasis and soil-transmitted helminths in school children: molecular diagnostic evidence and implications for disease elimination.

Mac PA, Anderson KD, Dakul DA · 2026 · Scientific reports

Schistosomiasis and soil-transmitted helminthiasis elimination programmes depend heavily on microscopic diagnostics, yet these methods may fail to detect low-intensity infections that sustain transmission. Molecular techniques could reveal…

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Negative / Null Result ReportMedicine

Neurophysiological investigations in a case of primary paroxysmal hemicrania-tic syndrome.

Maestrini I, Viganò A, Di Stefano G et al. · 2024 · Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology

Background The association between paroxysmal hemicrania (PH) and trigeminal neuralgia-the so-called PH-tic syndrome-has rarely been described. However, a correct diagnosis is crucial since both disorders require specific treatments.…

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Negative / Null Result ReportMedicine

Cell Free Microbial DNA Utilization at a Children's Hospital.

Craver R, Collier S, Anderson M · 2024 · Fetal and pediatric pathology

Background: We investigated the utilization of cell free microbial DNA (cfDNA) at a Children's Hospital. Materials and Methods: cfDNA results were assessed regarding the contribution to therapeutic decisions. Results: Of 80 tests on 59…

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Negative / Null Result ReportMedicine

Diagnostic performance of ultrasonography in pre-operative assessment of lymph nodes in patients with cervical cancer.

Fruhauf F, Cibula D, Kocian R et al. · 2024 · International journal of gynecological cancer : official journal of the International Gynecological Cancer Society

Objectives To assess the diagnostic performance of ultrasonography in pre-operative assessment of lymph nodes in patients with cervical cancer, to compare the outcomes for pelvic and para-aortic regions, and to detect macrometastases and…

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Negative / Null Result ReportMedicine

Biomarker analysis from patients with metastatic PDAC treated with TGFβ antibody, NIS793, plus abraxane+gemcitabine vs. abraxane+gemcitabine alone in a phase II, open label, randomized study.

Pelletier M, Yang J, Joshi M et al. · 2026 · Clinical cancer research : an official journal of the American Association for Cancer Research

Background Transforming Growth Factor Beta (TGFβ) plays a dual role in cancer, acting as a tumor suppressor early in disease but promoting progression and immune evasion when dysregulated. In pancreatic ductal adenocarcinoma (PDAC),…

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Negative / Null Result ReportMedicine

Dietary starch level determines the efficacy of calcium salts of palm fatty acids on nitrogen use efficiency and performance in feedlot lambs.

De S Ferreira JM, Rodrigues HP, Alba HDR et al. · 2026 · Animal : an international journal of animal bioscience

High-concentrate diets supplemented with rumen-protected fats are widely used in feedlot lamb systems to improve energy supply and performance; however, the metabolic efficacy of these lipid sources may depend on the availability of…

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Negative / Null Result ReportMedicine

Erratum.

· 2025 · Nephron

In the article "Immunosuppressant Agents as Add-On Therapy Failed to Improve the Outcome of Immunoglobulin A Nephropathy with Crescent Score C1" [Nephron. 2024;148:587-600; https://doi.org/10.1159/000534788] by Bi et al., the funding grant…

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Negative / Null Result ReportMedicine

Robotic-assisted Left Pneumonectomy For Vanishing Lung Syndrome.

Ngeve SM, Khoury AL, Long JM · 2026 · Journal of visualized experiments : JoVE

Vanishing Lung Syndrome (VLS) is a rare, severe form of bullous pulmonary disease characterized by giant bullae occupying more than 30% of the hemithorax, which can easily be misdiagnosed as a pneumothorax. While cigarette smoking is the…

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Negative / Null Result ReportMedicine

Diffuse Correlation Spectroscopy for Non-invasive Monitoring of Peripheral Perfusion During Cardiogenic Shock and VA-ECMO Support: An Experimental Study.

Matsushita H, Oba K, Kurono K et al. · 2026 · Shock (Augusta, Ga.)

Introduction In cardiogenic shock (CS), persistent microcirculatory impairment despite improved macrocirculatory parameters is associated with poor outcomes. Therapeutic strategies must therefore address both macro- and micro-circulation.…

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Negative / Null Result ReportMedicine

What’s new in dialysis in 2025?

Florens N · 2026 · Nephrologie & therapeutique

Cardiovascular mortality among hemodialysis patients remains strikingly high—around 10% per year—despite substantial advances in dialysis technology and medical care. Historically, several strategies extrapolated from the general…

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Negative / Null Result ReportMedicine

A Case of Diffuse Large B-Cell Lymphoma(DLBCL)Who Died of Acute Exacerbation of Interstitial Pneumonia after Treatment with R-mini-CHP in Combination with Polatuzumab Vedotin (Pola-R-mini-CHP).

Sekiguchi Y, Tsutsumi H, Kudo M et al. · 2026 · Gan to kagaku ryoho. Cancer & chemotherapy

84-year-old male was diagnosed with diffuse large B-cell lymphoma.He had Stage Ⅳ, performance status was 2, and 'high risk' according to the International Prognostic Index.He was started on Pola-R-mini-CHP.The day after completion of the 4…

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Negative / Null Result ReportMedicine

Short-term linaclotide plus polyethylene glycol in patients at increased risk of inadequate bowel preparation: A randomized, double-blind, multicenter trial.

Chen H, Wang J, Fan C et al. · 2026 · Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver

Background and aim The benefit of combining linaclotide with polyethylene glycol (PEG) for improving bowel preparation quality and adenoma detection in patients at risk for inadequate bowel preparation remains uncertain. This study aimed…

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Replication FailureMedicine

Lymph node metastasis, dissection efficacy, and prognostic differences between direct and incidental gallbladder carcinoma: A retrospective study.

Xu K, Zhang R, Yuan Y et al. · 2026 · European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology

Aims Gallbladder carcinoma (GBC) has a poor prognosis, with lymph node metastasis (LNM) being a key prognostic factor. Controversies remain regarding lymph node dissection (LND) utility and prognostic differences of direct (DGBC) vs.…

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Negative / Null Result ReportMedicine

Chemoradiotherapy with versus without concurrent immune checkpoint inhibitor for locally advanced esophageal squamous cell carcinoma: a multicenter retrospective study.

Huang JQ, Xiao HM, Ma CX et al. · 2026 · Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus

To compare survival outcomes and safety between concurrent chemoradiotherapy (CCRT) and CCRT with concurrent immune checkpoint inhibitor (ICI) in patients with locally advanced esophageal squamous cell carcinoma. This multicenter cohort…

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Negative / Null Result ReportMedicine

Therapeutic potential of retinoic acid-loaded lipid Nanocapsules in an experimental autoimmune encephalomyelitis mouse model of multiple sclerosis.

Moura RP, Mwema A, Bottemanne P et al. · 2026 · Journal of controlled release : official journal of the Controlled Release Society

Multiple sclerosis (MS) is a chronic neuroinflammatory disease affecting over 2.5 million people worldwide. Despite available therapies, no current treatment halts disease progression or specifically targets remyelination. Here, we…

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