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20,227 real negative results, null findings, and replication failures · 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

Comparison of Pharmacokinetic/Pharmacodynamic Parameters and Clinical Outcomes of Vancomycin Administered in Two Different Dosage Regimens in Patients with Acute Kidney Injury.

Soufi R, Salamzadeh J, Alavi Darazam I et al. · 2025 · Iranian journal of pharmaceutical research : IJPR

Background Vancomycin is commonly used in intensive care units (ICUs), but its optimal dosage in patients with acute kidney injury (AKI) remains uncertain. This study aimed to evaluate vancomycin's pharmacokinetic and pharmacodynamic…

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Negative / Null Result ReportOpen accessMedicine

Cognitive and Behavioral Effects of Levetiracetam in Juvenile Rats.

Ullal SD, Thomas AG, Acharya SD et al. · 2026 · Pharmacology research & perspectives

Epilepsy is a common neurologic disorder; its incidence in childhood is 2.5 per 1000 children. Levetiracetam (LEV) is an antiepileptic drug with a broad spectrum of action used in localized and generalized epilepsies in both adults and…

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Negative / Null Result ReportOpen accessMedicine

Elevated Carcinoembryonic Antigen Levels Predict Failure to Reach Surgery in Patients with Borderline Resectable Pancreatic Cancer Referred to Neoadjuvant Therapy.

Jacover A, Beller T, Mahamid N et al. · 2025 · Annals of surgical oncology

Introduction Neoadjuvant therapy (NT) is generally preferred over upfront surgery for borderline resectable pancreatic ductal adenocarcinoma (BR-PDAC), but many patients fail to reach surgical resection. This study evaluates real-world…

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Negative / Null Result ReportOpen accessMedicine

Efficacy and Safety of a Novel Rotatable Sphincterotome for Endoscopic Sphincterotomy in Patients With Roux-en-Y Gastrectomy During Balloon Enteroscopy-Assisted ERCP (With Video).

Tanisaka Y, Ryozawa S, Mizuide M et al. · 2025 · Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society

Endoscopic sphincterotomy (EST) is challenging for patients with surgically altered anatomy (SAA). The blades of conventional sphincterotomes designed for SAA do not always face the correct direction of EST. We aimed to evaluate the…

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Negative / Null Result ReportMedicine

The effect of dairy products on liver fat and metabolic risk markers in males with abdominal obesity - a four-arm randomized controlled trial.

Sandby K, Magkos F, Chabanova E et al. · 2024 · Clinical nutrition (Edinburgh, Scotland)

Background & aims In recent years, epidemiological studies have reported links between the consumption of fermented dairy products, such as yogurt, and health; however, evidence from human intervention trials is scarce and inconsistent. We…

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Negative / Null Result ReportOpen accessMedicine

Serum folate levels and risk of metabolic dysfunction-associated steatotic liver disease: results from a cross-sectional study and Mendelian randomization analysis.

Chen Y, Gao J, Wang X et al. · 2024 · Frontiers in nutrition

Background Evidence from observational studies on the association between folate and metabolic dysfunction-associated steatotic liver disease (MASLD) is conflicting. Aims This study aimed to investigate the association between serum folate…

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Negative / Null Result ReportMedicine

Choriocapillaris and choroidal thickness in all Leber hereditary optic neuropathy stages using swept source technology.

Castillo L, Berrozpe-Villabona C, Miserachs-García S et al. · 2024 · Acta ophthalmologica

Purpose The role of the choroid in Leber hereditary optic neuropathy (LHON) remains unclear. The literature is scarce, with conflicting results and lacks axial length measurements. Therefore, we aimed to analyse the choriocapillaris (CC)…

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Negative / Null Result ReportMedicine

Letter to the Editor Regarding Article "Prior to Initiation of Chemotherapy, Can We Predict Breast Tumor Response? Deep Learning Convolutional Neural Networks Approach Using a Breast MRI Tumor Dataset".

Brunekreef J · 2024 · Journal of imaging informatics in medicine

The cited article reports on a convolutional neural network trained to predict response to neoadjuvant chemotherapy from pre-treatment breast MRI scans. The proposed algorithm attains impressive performance on the test dataset with a mean…

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Negative / Null Result ReportMedicine

The protective effects of hyperoxic pre-treatment in human-derived adipose tissue mesenchymal stem cells against in vitro oxidative stress and a rat model of renal ischaemia-reperfusion.

Ahmadi Somaghian S, Pajouhi N, Dezfoulian O et al. · 2024 · Archives of physiology and biochemistry

Objective Improvement of cell survival is essential for achieving better clinical outcomes in stem cell therapy. We investigated the effects of hyperoxic pre-treatment (HP) on the viability of human adipose stromal stem cells (ASCs).…

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Negative / Null Result ReportOpen accessMedicine

Association Between Patient Sex and Familial Hypercholesterolemia and Long-Term Cardiovascular Risk Factor Management 5 Years After Acute Coronary Syndrome.

Krasieva K, Gencer B, Locatelli I et al. · 2024 · Circulation. Cardiovascular quality and outcomes

Background Long-term control of cardiovascular risk factors after acute coronary syndrome (ACS) is the cornerstone for preventing recurrence. We investigated the extent of cardiovascular risk factor management in males and females with and…

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Negative / Null Result ReportOpen accessMedicine

Refining the clinical utility of [<sup>177</sup>Lu]Lu/[<sup>225</sup>Ac]Ac-PSMA tandem RLT in patients with metastatic castration resistant prostate cancer.

Widjaja L, Hornfeck J, Siegmund SC et al. · 2026 · European journal of nuclear medicine and molecular imaging

Purpose This study aimed to evaluate the efficacy and safety of Lutetium-177/Actinium-225 prostate-specific membrane antigen tandem radioligand therapy ([ 177 Lu]Lu/[ 225 Ac]Ac-PSMA tandem RLT) and to explore clinical and imaging-based…

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Negative / Null Result ReportMedicine

Potential benefits of therapeutic drug monitoring for beta-lactam antibiotics in augmented renal clearance patients: a case report.

El-Haffaf I, Laverdière J, Albert M et al. · 2024 · Canadian journal of physiology and pharmacology

Augmented renal clearance (ARC) is commonly described in critically ill patients, making drug pharmacokinetics even harder to predict in this population. This case report displays the value of therapeutic drug monitoring (TDM) of…

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Negative / Null Result ReportOpen accessMedicine

Rapid response to BRAF/MEK inhibitor therapy within 2 weeks for high-grade glioma with leptomeningeal metastasis: illustrative case.

Kawaguchi Y, Hana T, Hasegawa H et al. · 2025 · Journal of neurosurgery. Case lessons

Background High-grade gliomas, particularly isocitrate dehydrogenase-wildtype glioblastomas (GBMs), are highly aggressive brain tumors with limited treatment options and poor outcomes. A subset of these tumors, including epithelioid GBM,…

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Negative / Null Result ReportMedicine

Gender-Affirming Hormone Therapy Is Associated with Increased Odds of Screening for Sexually Transmitted Infections in a Clinical Cohort of Transgender and Nonbinary Adults.

Pletta DR, Mayer KH, Chen JT et al. · 2024 · Transgender health

Purpose Transgender and nonbinary adults (TNB) are disproportionately burdened by sexually transmitted infections (STI) and the human immunodeficiency virus (HIV). This study investigated whether gender-affirming hormone therapy was…

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Negative / Null Result ReportOpen accessMedicine

Derived hematological indices during peripheral blood stem cell mobilization in the plerixafor era: insightful dynamics but limited predictive value.

Murugesan M, Niveditha LP, Sindhu ER et al. · 2026 · Hematology, transfusion and cell therapy

Introduction Derived hematological indices reflect immune activation, but their dynamics during the plerixafor era and their predictive value for stem cell yield remain unclear. Objectives To assess changes in derived hematological…

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