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Browse the failure-mode index

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

Radioactive Iodine Therapy Did Not Significantly Increase the Incidence and Recurrence of Subsequent Breast Cancer

Hwa Young Ahn, Hye Sook Min, Yohwan Yeo et al. · 2015 · The Journal of Clinical Endocrinology & Metabolism

CONTEXT: Previous studies on the extent to which radioactive iodine (RAI) therapy for thyroid cancer increases the risk of subsequently developing breast cancer have given conflicting results. OBJECTIVE: This study aimed to evaluate the…

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Negative / Null Result ReportOpen accessMedicine

Cost–Utility Analysis of Deferiprone for the Treatment of β-Thalassaemia Patients with Chronic Iron Overload: A UK Perspective

Anthony Bentley, Samantha Gillard, Michael Spino et al. · 2013 · PharmacoEconomics

BACKGROUND: Patients with β-thalassaemia major experience chronic iron overload due to regular blood transfusions. Chronic iron overload can be treated using iron-chelating therapies such as desferrioxamine (DFO), deferiprone (DFP) and…

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Negative / Null Result ReportOpen accessMedicine

Combination of Olanzapine and Samidorphan Has No Clinically Significant Effect on the Pharmacokinetics of Lithium or Valproate

Lei Sun, Sergey Yagoda, Baiyun Yao et al. · 2019 · Clinical Drug Investigation

BACKGROUND AND OBJECTIVE: Olanzapine is an atypical antipsychotic indicated for the treatment of schizophrenia and, either as monotherapy or as an adjunct to lithium or valproate, for bipolar I disorder. Multiple daily doses of olanzapine…

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Negative / Null Result ReportMedicine

Eastern Association for the Surgery of Trauma Multicenter Trial: Comparison of pre-injury antithrombotic use and reversal strategies among severe traumatic brain injury patients

Brian K. Yorkgitis, Danielle Tatum, Sharven Taghavi et al. · 2021 · The Journal of Trauma: Injury, Infection, and Critical Care

BACKGROUND Trauma teams are often faced with patients on antithrombotic (AT) drugs, which is challenging when bleeding occurs. We sought to compare the effects of different AT medications on head injury severity and hypothesized that AT…

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Negative / Null Result ReportOpen accessMedicine

Functional co-activation of the default mode network in APOE ε4-carriers: A replication study

Lara J. Mentink, Joao Guimaraes, Myrthe Faber et al. · 2021 · NeuroImage

Structural and functional alterations of the brain in persons genetically at-risk for Alzheimer's disease (AD) are crucial in unravelling AD development. Filippini et al. found that the default mode network (DMN) is already affected in young APOE ε4-carriers, with increased co-activation of the DMN during rest and increased hippocampal task activation. We aimed to replicate the early findings of Filippini et al, using the APOE gene, still the principal AD risk gene, and extended this with a polygenic risk score (PRS) analysis for AD, using the Human Connectome Project dataset (HCP). We include

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Negative / Null Result ReportOpen accessMedicine

Replication and Heritability of Prostate Cancer Risk Variants: Impact of Population-Specific Factors

Victor Virlogeux, Rebecca E. Graff, Thomas J. Hoffmann et al. · 2015 · Cancer Epidemiology Biomarkers & Prevention

BACKGROUND: Prostate cancer incidence and mortality rates vary across populations, with African American men exhibiting the highest rates. To date, genome-wide association studies have identified 104 SNPs independently associated with…

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Negative / Null Result ReportOpen accessMedicine

New treatment options for lupus – a focus on belimumab

Laurent Chiche · 2012 · Therapeutics and Clinical Risk Management

Belimumab is the first biologic approved for patients with systemic lupus erythematosus (SLE). Belimumab is the first of a new class of drug targeting B cell-stimulating factors or their receptors to reach the market. Its target, BLyS,…

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Negative / Null Result ReportOpen accessMedicine

Significant Differences in the Bacterial Microbiome of the Pharynx and Skin in Patients with Psoriasis Compared with Healthy Controls

Malin Assarsson, Jan Söderman, Olaf Dienus et al. · 2020 · Acta Dermato Venereologica

Studies have shown differences in the skin and gut bacterial microbiomes in patients with psoriasis, but the pharyngeal microbiome has not been studied previously. The aim of this study was to investigate differences in the bacterial…

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Negative / Null Result ReportOpen accessMedicine

Improving PCASL at ultra‐high field using a VERSE‐guided parallel transmission strategy

Yan Tong, Peter Jezzard, Thomas W. Okell et al. · 2020 · Magnetic Resonance in Medicine

PURPOSE: To improve the labeling efficiency of pseudo-continuous arterial spin labeling (PCASL) at 7T using parallel transmission (pTx). METHODS: maps were acquired in the labeling plane for tagging pulse design. Complex weights of the labeling pulses for each of the 8 transmit channels were calculated to produce a homogenous radiofrequency (RF) -shimmed labeling across the ROIs. Variable-Rate Selective Excitation (VERSE) pulses were also implemented as a part of the labeling pulse train. Whole-brain perfusion-weighted images were acquired under conditions of RF shimming, VERSE with RF shimmin

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Negative / Null Result ReportOpen accessMedicine

A randomized phase 2 study of temsirolimus and cetuximab versus temsirolimus alone in recurrent/metastatic, cetuximab‐resistant head and neck cancer: The MAESTRO study

Tanguy Y. Seiwert, Sara Kochanny, Kevin Wood et al. · 2020 · Cancer

BACKGROUND: Patients with cetuximab-resistant, recurrent/metastatic head and neck squamous cell carcinoma (HNSCC) have poor outcomes. This study hypothesized that dual blockade of mammalian target of rapamycin and epidermal growth factor…

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Negative / Null Result ReportOpen accessMedicine

Mortality in HIV and tuberculosis patients following implementation of integrated HIV-TB treatment: Results from an open-label cluster-randomized trial

Kogieleum Naidoo, Santhanalakshmi Gengiah, Nonhlanhla Yende‐Zuma et al. · 2022 · EClinicalMedicine

Background HIV-TB treatment integration reduces mortality. Operational implementation of integrated services is challenging. This study assessed the impact of quality improvement (QI) for HIV-TB integration on mortality within primary…

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Negative / Null Result ReportOpen accessMedicine

Potential Influence of Anesthetic Interventions on Breast Cancer Early Recurrence According to Estrogen Receptor Expression: A Sub-Study of a Randomized Trial

Mohan Li, Yuelun Zhang, Lijian Pei et al. · 2022 · Frontiers in Oncology

Background Effects of anesthetic interventions on cancer prognosis remain controversial. There is evidence that estrogen receptor (ER)-negative breast cancer patients have an early recurrence peak. We aimed to assess the potential benefit of regional anesthesia-analgesia versus general anesthesia regarding early recurrence in breast cancer according to ER expression. Methods Based on a multicenter randomized controlled trial (clinicaltrials.gov, NCT00418457), we included all the patients from Peking Union Medical College Hospital research center in this study. The primary outcome was breast ca

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Negative / Null Result ReportOpen accessMedicine

Reexamining the “brain drain” effect: A replication of Ward et al. (2017)

Ana C. Ruiz Pardo, John Paul Minda · 2022 · Acta Psychologica

The present study was a pre-registered direct replication of Ward et al.'s (2017) second experiment (OSF pre-registration found at: https://osf.io/5fq4r). This replication assigned both smartphone location (on desk, in pocket/bag, or outside of the testing room) and smartphone power (on, or off) for a total of six conditions. Participants completed an automated operation span (OSpan) task, a Cue-Dependent Go/No-Go task, and the smartphone attachment and dependency inventory. It was hypothesized that performance on an attention-demanding task (i.e., the OSpan task) would be worse for those in c

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Negative / Null Result ReportOpen accessMedicine

Are three weeks hypofractionated radiation therapy (HFRT) comparable to six weeks for newly diagnosed glioblastoma patients? Results of a phase II study

Pierina Navarria, Federico Pessina, Stefano Tomatis et al. · 2017 · Oncotarget

// Pierina Navarria 1, * , Federico Pessina 2, * , Stefano Tomatis 1 , Riccardo Soffietti 3 , Marco Grimaldi 4 , Egesta Lopci 5 , Arturo Chiti 5, 7 , Antonella Leonetti 9 , Alessandra Casarotti 2 , Marco Rossi 2 , Luca Cozzi 1 , Anna Maria Ascolese 1 , Matteo Simonelli 6, 7 , Simona Marcheselli 8 , Armando Santoro 6, 7 , Elena Clerici 1 , Lorenzo Bello 2 and Marta Scorsetti 1, 7 1 Radiotherapy and Radiosurgery Department, Humanitas Cancer Center and Research Hospital, Rozzano, Italy 2 Neurosurgical Oncology Department, Humanitas Cancer Center and Research Hospital, Rozzano, Italy 3 Consultant

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Negative / Null Result ReportOpen accessMedicine

Primary Sjögren’s Disease: a review of unmet need, outcome measures, therapeutic advances and health economic impacts. Lessons from the NEw Clinical Endpoints in primary Sjögren’s Syndrome: an Interventional Trial based on stratifYing patients (NECESSITY) Innovative Health Initiative (IHI)

Simon Bowman, Raphaèle Séror, Raphaël Porcher et al. · 2025 · Annals of the Rheumatic Diseases

Primary Sjögren's disease (pSjD) is an autoimmune rheumatic disease involving exocrine glands and associated with high symptom burden (dryness, fatigue, pain), systemic features and salivary gland dysfunction. B-cell hyperactivity is common, with an increased risk of mucosa-associated lymphoid tissue lymphoma. This review describes the unmet need, scientific validity of outcome measures, optimisation of clinical trial design, therapeutic advances and how clinical improvement relates to health-related quality of life, additional quality-adjusted life years and economic benefit in pSjD. It deriv

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Negative / Null Result ReportOpen accessMedicine

Bi-specific T-cell engagers (BiTEs) in prostate cancer and strategies to enhance development: hope for a BiTE-r future

Harriet Lampe, Laura Tam, Aaron R. Hansen · 2024 · Frontiers in Pharmacology

Metastatic castrate resistant prostate cancer (mCRPC) continues to have poor survival rates due to limited treatment options. Bi-specific T cell engagers (BiTEs) are a promising class of novel immunotherapies with demonstrated success in haematological malignancies and melanoma. BiTEs developed for tumour associated antigens in prostate cancer have entered clinical testing. These trials have been hampered by high rates of treatment related adverse events, minimal or transient anti-tumour efficacy and generation of high titres of anti-drug antibodies. This paper aims to analyse the challenges f

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Negative / Null Result ReportOpen accessMedicine

Nutritional and Microbial Strategies for Treating Acne, Alopecia, and Atopic Dermatitis

Alejandro Borrego-Ruiz, Juan J. Borrego · 2024 · Nutrients

BACKGROUND/OBJECTIVES: Diet is one of the major determinants of the composition and function of the gut microbiome, and diverse studies have established directional connections between gut microbiome dysbiosis and skin dyshomeostasis. Furthermore, a significant link between the gut and certain skin-related disorders has been reported. This work reviews the mechanisms underlying the relationship between nutritional factors, gut microbiome, and certain skin diseases such as acne vulgaris, alopecia, and atopic dermatitis. In addition, it explores how the modulation of the gut microbiome and human

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Negative / Null Result ReportOpen accessMedicine

Effect of a rice bran fiber diet on serum glucose levels of diabetic patients in Brazil

Cecília Rodrigues Silva, José Eduardo Dutra de Oliveira, Rui Augusto Hudari Gonçalves de Souza et al. · 2026 · Archivos Latinoamericanos de Nutrición

Eleven diabetic patients: 5, type 1 and 6, type 2 received a low-fiber diet (I) during 1 week and during the next 7 days the same diet, enriched with 40 g of fiber (30.6% insoluble and 11.7% soluble components) from rice bran (II) per day.…

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Negative / Null Result ReportOpen accessMedicine

Generative AI in Academic Writing: A Comparison of DeepSeek, Qwen, ChatGPT, Gemini, Llama, Mistral, and Gemma

Ömer Aydın, Enis Karaarslan, Fatih Safa Erenay et al. · 2026 · Turkish Journal of Engineering

DeepSeek v3, developed in China, was released in December 2024, followed by Alibaba’s Qwen 2.5 Max in January 2025 and Qwen3 235B in April 2025. These free and open-source models offer significant potential for academic writing and content…

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Negative / Null Result ReportOpen accessMedicine

Prognostic and predictive role of EGFR pathway alterations in biliary cancer patients treated with chemotherapy and anti-EGFR

Caterina Peraldo‐Neia, Giuliana Cavalloni, Elisabetta Fenocchio et al. · 2018 · PLoS ONE

The association of anti-EGFR to gemcitabine and oxaliplatin (GEMOX) chemotherapy did not improve survival in biliary tract carcinoma (BTC) patients. Multiple mechanisms might be involved in the resistance to anti-EGFR. Here, we explored the mutation profile of EGFR extracellular domain (ECD), of tyrosine kinase domain (TKD), and its amplification status. EGFR mutational status of exons 12, 18-21 was analyzed in 57 tumors by Sanger sequencing. EGFR amplification was evaluated in 37 tumors by Fluorescent In Situ Hybridization (FISH). Kaplan-Meier curves were calculated using the log-rank test. S

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Negative / Null Result ReportOpen accessMedicine

Obeticholic Acid and Other Farnesoid-X-Receptor (FXR) Agonists in the Treatment of Liver Disorders

Stefano Fiorucci, Ginevra Urbani, Eleonora Distrutti et al. · 2025 · Pharmaceuticals

The Farnesoid-X-receptor (FXR) is a bile sensor involved in the regulation of bile acid homeostasis, fibrosis, inflammation, and metabolism. Obeticholic acid (OCA), a semisynthetic derivative of chenodeoxycholic acid (CDCA), initially named 6-ethyl-CDCA or INT-747, is the first in a class of FXR ligands that have been approved for clinical use for the treatment of patients with primary biliary cholangitis (PBC) who are unresponsive or intolerant to ursodeoxycholic acid. In this narrative review, we will examine the current status and future perspective of clinical use of OCA. Based on results

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Negative / Null Result ReportOpen accessMedicine

Mutations in the Neuraminidase-Like Protein of Bat Influenza H18N11 Virus Enhance Virus Replication in Mammalian Cells, Mice, and Ferrets

Gongxun Zhong, Shufang Fan, Masato Hatta et al. · 2019 · Journal of Virology

Bats are reservoirs for several severe zoonotic pathogens. The genomes of influenza A viruses of the H17N10 and H18N11 subtypes have been identified in bats, but no live virus has been isolated. The characterization of artificially…

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Negative / Null Result ReportOpen accessMedicine

Orally active prostacyclin analogue beraprost sodium in patients with chronic kidney disease: a randomized, double-blind, placebo-controlled, phase II dose finding trial

Akio Kôyama, Toshiro Fujita, Fumitake Gejyo et al. · 2015 · BMC Nephrology

BACKGROUND: Evidence increasingly points to the importance of chronic hypoxia in the tubulointerstitium as a final common pathway to end-stage renal disease (ESRD). Beraprost sodium (BPS) is an orally active prostacyclin (PGI2) analogue demonstrating prevention of the progression of chronic kidney disease (CKD) in various animal models by maintaining renal blood flow and attenuating renal ischemic condition. METHODS: This multicenter, randomized, double-blind, placebo-controlled, phase II trial was designed to determine the recommended dose of the sustained-release form of BPS (TRK-100STP 120

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Negative / Null Result ReportOpen accessMedicine

Forced expression of miR-143 and -145 in cardiomyocytes induces cardiomyopathy with a reductive redox shift

Kota Ogawa, Akiko Noda, Jun Ueda et al. · 2020 · Cellular & Molecular Biology Letters

BACKGROUND: Animal model studies show that reductive stress is involved in cardiomyopathy and myopathy, but the exact physiological relevance remains unknown. In addition, the microRNAs miR-143 and miR-145 have been shown to be upregulated in cardiac diseases, but the underlying mechanisms associated with these regulators have yet to be explored. METHODS: We developed transgenic mouse lines expressing exogenous miR-143 and miR-145 under the control of the alpha-myosin heavy chain (αMHC) promoter/enhancer. RESULTS: The two transgenic lines showed dilated cardiomyopathy-like characteristics and

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Negative / Null Result ReportOpen accessMedicine

Randomized, Double-Blind, Placebo-Controlled Phase III Study of Paclitaxel ± Napabucasin in Pretreated Advanced Gastric or Gastroesophageal Junction Adenocarcinoma

Manish A. Shah, Kohei Shitara, Florian Lordick et al. · 2022 · Clinical Cancer Research

PURPOSE: To compare napabucasin (generator of reactive oxygen species) plus paclitaxel with paclitaxel only in patients with second-line advanced gastric or gastroesophageal junction (GEJ) adenocarcinoma. EXPERIMENTAL DESIGN: In the…

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Negative / Null Result ReportOpen accessMedicine

ACE inhibition and cardiometabolic risk factors, lung ACE2 and TMPRSS2 gene expression, and plasma ACE2 levels: a Mendelian randomization study

Dipender Gill, Marios Arvanitis, Paul Carter et al. · 2020 · Royal Society Open Science

Angiotensin-converting enzyme 2 (ACE2) and serine protease TMPRSS2 have been implicated in cell entry for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus responsible for coronavirus disease 2019 (COVID-19). The expression of ACE2 and TMPRSS2 in the lung epithelium might have implications for the risk of SARS-CoV-2 infection and severity of COVID-19. We use human genetic variants that proxy angiotensin-converting enzyme (ACE) inhibitor drug effects and cardiovascular risk factors to investigate whether these exposures affect lung ACE2 and TMPRSS2 gene expression and circ

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