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12,240 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 ReportOpen accessMedicine

Mycophenolic acid pharmacogenomics in kidney transplantation

Fabiana Dalla Vecchia Genvigir, Álvaro Cerda, Thiago Dominguez Crespo Hirata et al. · 2020 · Journal of Translational Genetics and Genomics

Mycophenolic acid (MPA) is a potent antiproliferative drug prescribed to prevent acute rejection in kidney transplantation. MPA reversibly inhibits the enzymes involved in the synthesis of guanosine nucleotides, thus preventing DNA replication of immune cells. Consequently, the repression of both cell and humoral immunity induces renal allograft tolerance. MPA is an effective and safe immunosuppressive drug, but some patients show variability in drug concentration, acute rejection, graft dysfunction, or MPA-related adverse events. Although the pharmacogenomics of immunosuppressive drugs has be

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Replication FailureOpen accessMedicine

Transarterial Chemoembolization Combined with Atezolizumab Plus Bevacizumab versus Transarterial Chemoembolization Alone in Intermediate‐stage Hepatocellular Carcinoma: A Multicenter Retrospective Study

Yitao Zheng, Yan‐Jun Xiang, Hongqi Shi et al. · 2024 · Journal of Hepatocellular Carcinoma

Purpose: Combining transarterial chemoembolization (TACE) with systemic therapy has shown significant efficacy for intermediate-stage hepatocellular carcinoma (HCC) patients. This study aimed to validate the therapeutic efficacy of TACE…

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Negative / Null Result ReportOpen accessMedicine

A pilot trial of vaccination with Carcinoembryonic antigen and Her2/neu peptides in advanced colorectal cancer

Kevin Lynch, Gabriella C. Squeo, William J. Kane et al. · 2021 · International Journal of Cancer

Abstract Checkpoint‐blockade therapy (CBT) is approved for select colorectal cancer (CRC) patents, but additional immunotherapeutic options are needed. We hypothesized that vaccination with carcinoembryonic antigen (CEA) and Her2/neu…

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Negative / Null Result ReportOpen accessMedicine

Identification of biomarkers of response to abatacept in patients with SLE using deconvolution of whole blood transcriptomic data from a phase IIb clinical trial

Somnath Bandyopadhyay, Seán Connolly, Omar Jabado et al. · 2017 · Lupus Science & Medicine

OBJECTIVE: To characterise patients with active SLE based on pretreatment gene expression-defined peripheral immune cell patterns and identify clusters enriched for potential responders to abatacept treatment. METHODS: This post hoc…

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Negative / Null Result ReportOpen accessMedicine

Improving patient identification for advanced cardiac imaging through machine learning-integration of clinical and coronary CT angiography data

Jan Walter Benjamins, Ming Wai Yeung, Teemu Maaniitty et al. · 2021 · International Journal of Cardiology

BACKGROUND: Standard computed tomography angiography (CTA) outputs a myriad of interrelated variables in the evaluation of suspected coronary artery disease (CAD). But an important proportion of obstructive lesions does not cause significant myocardial ischemia. Nowadays, machine learning (ML) allows integration of numerous variables through complex interdependencies that optimize classification and prediction at the individual level. We evaluated ML performance in integrating CTA and clinical variables to identify patients that demonstrate myocardial ischemia through PET and those who ultimat

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Negative / Null Result ReportOpen accessMedicine

CEOP/IVE/GDP alternating regimen compared with CEOP as the first-line therapy for newly diagnosed patients with peripheral T cell lymphoma: results from a phase 2, multicenter, randomized, controlled clinical trial

Ming-Ci Cai, Shu Cheng, Xin Wang et al. · 2020 · Genome Medicine

Abstract Background Cyclophosphamide, doxorubicin, vincristine, and prednisolone (CHOP)/CHOP-like chemotherapy is widely used in peripheral T cell lymphoma (PTCL). Here we conducted a phase 2, multicenter, randomized, controlled trial, comparing the efficacy and safety of CEOP/IVE/GDP alternating regimen with CEOP in newly diagnosed PTCL. Methods PTCL patients, except for anaplastic large cell lymphoma-anaplastic lymphoma kinase positive, were 1:1 randomly assigned to receive CEOP/IVE/GDP (CEOP, cyclophosphamide 750 mg/m 2 , epirubicin 70 mg/m 2 , vincristine 1.4 mg/m 2 [maximum 2 mg] on day 1

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Negative / Null Result ReportMedicine

Evaluation of the anti‐tumour activity of Coriolus versicolor polysaccharopeptide (I'm‐Yunity) alone or in combination with doxorubicin for canine splenic hemangiosarcoma

Allison Gedney, Pascale C. Salah, Jennifer A. Mahoney et al. · 2022 · Veterinary and Comparative Oncology

Canine splenic hemangiosarcoma (HSA) is an aggressive tumour of vascular endothelium that carries a grave prognosis following standard of care treatment with surgery and doxorubicin. A previous pilot study revealed potential anti-tumour…

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Negative / Null Result ReportOpen accessMedicine

Texture quantified from ultrasound Nakagami parametric images is diagnostically relevant for breast tumor characterization

Sabiq Muhtadi, Rezwana R. Razzaque, Ahmad Chowdhury et al. · 2023 · Journal of Medical Imaging

Purpose: We evaluate texture quantified from ultrasound Nakagami parametric images for non-invasive characterization of breast tumors, as Nakagami images can more faithfully represent intrinsic tumor characteristics than standard B-mode…

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Negative / Null Result ReportOpen accessMedicine

Significant associations between bone mineral density and vascular calcification in patients with different stages of chronic kidney disease

Jana Uhlinova, Anne Kuudeberg, Kaja Metsküla et al. · 2022 · BMC Nephrology

INTRODUCTION: Chronic kidney disease-mineral and bone disorders (CKD-MBD) is characterised by generalised vascular calcification (VC) and impaired bone health. We aimed to investigate the relationship between VC and bone mineral density (BMD) in CKD patients. METHODS: We performed a cross-sectional study of patients with different stages of CKD. For assessment of VC of abdominal aorta lateral lumbar X-rays (Kauppila score), the ankle-brachial index (ABI) and echocardiography were used. Total body densitometry provided BMD. RESULTS: Ninety patients (41% male, median age 64 years (range 29-87))

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Negative / Null Result ReportOpen accessMedicine

Clinicopathological features and outcome for neuroendocrine neoplasms of gastroesophageal junction: A population‐based study

Panpan Zhang, Wei Wang, Ming Lu et al. · 2018 · Cancer Medicine

BACKGROUND: Gastroesophageal Junction neuroendocrine neoplasms (GEJ-NENs) are rare and heterogeneous tumors. We aim to analyze the clinicopathlogical features and prognostic factors of GEJ-NENs and to compare the outcome of GEJ-NENs with other gastric NENs. METHODS: A total of 297 GEJ-NENs patients were enrolled from 10 Chinese hospitals and 3152 gastric NENs patients, including 274 GEJ-NENs, were retrieved from Surveillance, Epidemiology, and End Results (SEER) database. RESULTS: The clinical characteristics of GEJ-NENs among different races were different. All Chinese patients had GEJ-NENs o

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Negative / Null Result ReportOpen accessMedicine

Efficacy and safety of transcranial direct current stimulation over the left dorsolateral prefrontal cortex in children and adolescents with attention-deficit/hyperactivity disorder: a randomized, triple-blinded, sham-controlled, crossover trial

Rachel Silvany Quadros Guimarães, Igor D. Bandeira, Bianca Lima Barretto et al. · 2024 · Frontiers in Psychiatry

Introduction: Although pharmacological treatment for Attention-Deficit/Hyperactivity Disorder (ADHD) has demonstrated efficacy, several individuals persist in experiencing social and academic impairment. Additionally, the occurrence of significant side effects may render the use of psychotropic medications untenable. However, Transcranial Direct Current Stimulation (tDCS), a non-invasive brain stimulation technique, shows promising results in treating ADHD. Objectives: To investigate the efficacy and safety of tDCS on the performance of children and adolescents with ADHD in neuropsychological

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Negative / Null Result ReportOpen accessMedicine

Effects of the Cessation of Mass Screening for Neuroblastoma at 6 Months of Age: A Population-Based Study in Osaka, Japan

Akiko Ioka, Masami Inoue, Akihiro Yoneda et al. · 2015 · Journal of Epidemiology

BACKGROUND: In 2004, the Japanese government halted the 6-month mass screening program for neuroblastoma. We investigated whether its cessation had led to an increase not only in mortality due to this disease but also in the incidence of advanced-stage disease among older children. METHODS: Study subjects were neuroblastoma patients retrieved from the population-based Osaka Cancer Registry. Trends of incidence and mortality from neuroblastoma were analyzed by calendar year and birth cohort. Prognostic factors, including stage and v-myc avian myelocytomatosis viral oncogene neuroblastoma derive

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Negative / Null Result ReportOpen accessMedicine

Autoimmune thyroid disease and urticarial vasculitis: is there a significant association?

Iván Chérrez-Ojeda, Emanuel Vanegas, Valeria L. Mata et al. · 2019 · Allergy Asthma and Clinical Immunology

Little is known about the association of urticarial vasculitis (UV) with thyroid autoimmunity. The latter has been mostly described in the setting of patients with chronic spontaneous urticaria (CSU). In this letter to the editor, we compare UV and CSU through retrospective analyses, which reveal that 41.7% patients with UV presented antithyroperoxidase (anti-TPO) and/or antithyroglobulin antibody (ATA) above the reference range, while only 4% patients with CSU had these antibodies elevated. There is a moderately strong association assessed by the Phi coefficient (φ = 0.420, p = 0.004). Furthe

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Negative / Null Result ReportOpen accessMedicine

Thyroid Autoimmunity and Behçet’s Disease: Is There a Significant Association?

Filiz Cebeci, Nahide Onsun, Ayşe Pekdemir et al. · 2013 · The Scientific World JOURNAL

BACKGROUND: Behcet's disease (BD) could be regarded as an autoimmune disease in many aspects. Autoimmune thyroid disease (ATD) is frequently accompanied by other various autoimmune diseases. Nevertheless, there is not still enough data showing the association between BD and ATD. In addition, no controlled study is present in the PubMed, which evaluates thyroidal autoimmunity using antithyroid peroxidase antibody in a large series of patients with BD. METHODS: We aimed to investigate the frequency of ATD in patients with BD. The study included 124 patients with BD and 99 age- and sex-matched he

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Negative / Null Result ReportOpen accessMedicine

Optimal medical care and coronary flow capacity-guided myocardial revascularization vs usual care for chronic coronary artery disease: the CENTURY trial

K. Lance Gould, Nils P. Johnson, Amanda E. Roby et al. · 2025 · European Heart Journal

BACKGROUND AND AIMS: The randomized CENTURY trial tested the hypothesis that a comprehensive strategy integrating intense lifestyle modification and aggressive medical management to goals with revascularization reserved for severely reduced coronary flow capacity (CFC) by positron emission tomography (PET) would reduce risk factors, subsequent revascularization, death and myocardial infarction (MI) compared with standard of care in chronic stable coronary artery disease (CAD). METHODS: Participants were randomly assigned to standard or comprehensive care groups. Rest-stress PET quantified CFC

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Negative / Null Result ReportOpen accessMedicine

Anti-IFNαR Mabs for the treatment of systemic lupus erythematosus

Bethan Goulden, David Isenberg · 2020 · Expert Opinion on Biological Therapy

INTRODUCTION: The type 1 interferon pathway is known to play a role in the immunopathology of systemic lupus erythematosus (SLE). As a result, biologic agents targeting this pathway have been developed and are currently being investigated…

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Negative / Null Result ReportMedicine

Biomimetic Human Lung Alveolar Interstitium Chip with Extended Longevity

Kun Man, Jiafeng Liu, Cindy Liang et al. · 2023 · ACS Applied Materials & Interfaces

Determining the mechanistic causes of lung diseases, developing new treatments thereof, and assessing toxicity whether from chemical exposures or engineered nanomaterials would benefit significantly from a preclinical human lung alveolar…

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Negative / Null Result ReportOpen accessMedicine

Comparison of Platelet Function Guided Versus Unguided Treatment With P2Y12 Inhibitors in Patients With Acute Myocardial Infarction (from the Hungarian Myocardial Infarction Registry)

András Komócsi, Dániel Aradi, Tibor Szük et al. · 2018 · The American Journal of Cardiology

Evidence is conflicting regarding the clinical benefits of selecting P2Y12 inhibitors based on platelet function testing (PFT). Between March 1, 2013 and March 1, 2014, we collected clinical characteristics and platelet function data in a…

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Negative / Null Result ReportOpen accessMedicine

The impact of fluid resuscitation via colon on patients with severe acute pancreatitis

Tongtian Ni, Ying Chen, Bing Zhao et al. · 2021 · Scientific Reports

Severe acute pancreatitis (SAP) is a life-threatening disease. Fluid Resuscitation Via Colon (FRVC) may be a complementary therapy for early controlled fluid resuscitation. But its clinical application has not been reported. This study aims to explore the impact of FRVC on SAP. All SAP patients with the first onset within 72 h admitted to the hospital were included from January 2014 to December 2018 through electronic databases of Ruijin hospital and were divided into FRVC group (n = 103) and non-FRVC group (n = 78). The clinical differences before and after the therapy between the two groups

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Negative / Null Result ReportOpen accessMedicine

A Genome-Wide Investigation of Copy Number Variation in Patients with Sporadic Brain Arteriovenous Malformation

Nasrine Bendjilali, Helen Kim, Shantel Weinsheimer et al. · 2013 · PLoS ONE

BACKGROUND: Brain arteriovenous malformations (BAVM) are clusters of abnormal blood vessels, with shunting of blood from the arterial to venous circulation and a high risk of rupture and intracranial hemorrhage. Most BAVMs are sporadic, but also occur in patients with Hereditary Hemorrhagic Telangiectasia, a Mendelian disorder caused by mutations in genes in the transforming growth factor beta (TGFβ) signaling pathway. METHODS: To investigate whether copy number variations (CNVs) contribute to risk of sporadic BAVM, we performed a genome-wide association study in 371 sporadic BAVM cases and 56

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Negative / Null Result ReportOpen accessMedicine

A Single Dose of Baicalin Has No Clinically Significant Effect on the Pharmacokinetics of Cyclosporine A in Healthy Chinese Volunteers

Ruijuan Liu, Xia Li, Jingyao Wei et al. · 2019 · Frontiers in Pharmacology

Despite its narrow therapeutic window and large inter-individual variability, cyclosporine A (CsA) is the first-line therapy following organ transplantation. Metabolized mainly by CYP3A and being a substrate of P-glycoprotein (P-gp), CsA is susceptible to drug-drug interactions. Baicalin (BG) is a drug used for adjuvant therapy of hepatitis in traditional Chinese medicine. Since its aglycone Baicalein (B) inhibits CYP3A and P-gP, co-administration might affect CsA pharmacokinetics. This study investigated the effect of BG on CsA pharmacokinetics. In a two-period study, 16 healthy volunteers re

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Negative / Null Result ReportOpen accessMedicine

High-sensitivity troponin I with or without ultra-sensitive copeptin for the instant rule-out of acute myocardial infarction

Fabrizio Ricci, Franz–Josef Neumann, Nicole Rübsamen et al. · 2022 · Frontiers in Cardiovascular Medicine

Background The instant, single-sampling rule-out of acute myocardial infarction (AMI) is still an unmet clinical need. We aimed at testing and comparing diagnostic performance and prognostic value of two different single-sampling biomarker strategies for the instant rule-out of AMI. Methods From the Biomarkers in Acute Cardiac Care (BACC) cohort, we recruited consecutive patients with acute chest pain and suspected AMI presenting to the Emergency Department of the University Medical Center Hamburg-Eppendorf, Hamburg, Germany. We compared safety, effectiveness and 12-month incidence of the comp

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Negative / Null Result ReportOpen accessMedicine

Polyprotein Processing as a Determinant for in Vitro Activity of Semliki Forest Virus Replicase

Maija K. Pietilä, Irina C. Albulescu, Martijn J. van Hemert et al. · 2017 · Viruses

Semliki Forest virus (SFV) is an arthropod-borne alphavirus that induces membrane invaginations (spherules) in host cells. These harbor the viral replication complexes (RC) that synthesize viral RNA. Alphaviruses have four replicase or nonstructural proteins (nsPs), nsP1-4, expressed as polyprotein P1234. An early RC, which synthesizes minus-strand RNA, is formed by the polyprotein P123 and the polymerase nsP4. Further proteolytic cleavage results in a late RC consisting of nsP1-4 and synthesizing plus strands. Here, we show that only the late RCs are highly active in RNA synthesis in vitro. F

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Negative / Null Result ReportOpen accessMedicine

Ilixadencel, a Cell-based Immune Primer, plus Sunitinib Versus Sunitinib Alone in Metastatic Renal Cell Carcinoma: A Randomized Phase 2 Study

Magnus Lindskog, Anna Laurell, Anders Kjellman et al. · 2022 · European Urology Open Science

Background: The prognosis of patients with synchronous metastatic renal cell carcinoma (mRCC) is poor. Whereas single-agent tyrosine kinase inhibition (TKI) is clearly insufficient, the effects can be enhanced by combinations with immune checkpoint inhibitors. Innovative treatment options combining TKI and other immune-stimulating agents could prove beneficial. Objective: To evaluate the clinical effects on metastatic disease when two doses of allogeneic monocyte-derived dendritic cells (ilixadencel) are administrated intratumorally followed by nephrectomy and treatment with sunitinib compared

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Negative / Null Result ReportOpen accessMedicine

<p>Effects of early administration of insulin-like growth factor-1 on cognitive function in septic encephalopathy</p>

Yang� Yang, Shengru Liang, Yuqian Li et al. · 2019 · Neuropsychiatric Disease and Treatment

BACKGROUND: Both protective and therapeutic functions of insulin-like growth factor-1 (IGF-1) in brain injury have been reported, but its effects on cognitive sequelae after septic encephalopathy (SE) remain unclear. MATERIALS AND METHODS:…

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Negative / Null Result ReportOpen accessMedicine

A cross-sectional study to assess response generated by ChatGPT and ChatSonic to patient queries about Epilepsy

Aditya Kumar Gudimella Tirumala, Shubham Mishra, Nritya Trivedi et al. · 2023 · Telematics and Informatics Reports

This article presents a study comparing the responses of two AI chatbots, ChatGPT and ChatSonic, regarding inquiries about epilepsy. Overall, ChatGPT and ChatSonic are very similar in terms of their capabilities and limitations and they…

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Negative / Null Result ReportOpen accessMedicine

Recursive seed amplification detects distinct α-synuclein strains in cerebrospinal fluid of patients with Parkinson’s disease

Stefan Bräuer, Iñaki Schniewind, Elisabeth Dinter et al. · 2025 · Acta Neuropathologica Communications

Parkinson's disease (PD) is a heterogeneous neurodegenerative disorder with a wide range of clinical phenotypes. Pathologically, it is characterized by neuronal inclusions containing misfolded, fibrillar alpha-synuclein (aSyn). Prion-like properties of aSyn contribute to the spread of aSyn pathology throughout the nervous system as the disease progresses. Utilizing these properties, seed amplification assays (SAA) enable the detection of aSyn pathology in living patients. We hypothesized that structurally distinct aSyn aggregates, or strains, may underlie the clinical heterogeneity of PD. To t

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Negative / Null Result ReportOpen accessMedicine

Comparison of newer Kane formula with Sanders Retzlaff Kraff/Theoretical and Barrett Universal II for calculation of intraocular lens power in Indian eyes

Prajakta Paritekar, Akshay Nayak, Y Umesh et al. · 2022 · Indian Journal of Ophthalmology

Purpose: To compare the efficacy of Kane formula with Sanders Retzlaff Kraff/Theoretical (SRK/T) and Barrett Universal II in predicting intraocular lens (IOL) power in Indian eyes. Methods: This retrospective study conducted in a tertiary…

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