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11,287 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 ReportMedicine

Metformin and placebo therapy both improve weight management and fasting insulin in obese insulin-resistant adolescents: a prospective, placebo-controlled, randomized study

Susanna Wiegand, Dagmar l’Allemand, Hanna Hübel et al. · 2010 · European Journal of Endocrinology

OBJECTIVE: To study whether metformin reduces obesity, homeostasis model assessment for insulin resistance index (HOMA-IR), and the metabolic syndrome (MtS) in obese European adolescents in addition to previous unsuccessful lifestyle…

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Negative / Null Result ReportOpen accessMedicine

Physical Performance and Clinical Outcomes in Dialysis Patients: A Secondary Analysis of the Excite Trial

Claudia Torino, Fabio Manfredini, Davide Bolignano et al. · 2014 · Kidney & Blood Pressure Research

BACKGROUND/AIMS: Scarce physical activity predicts shorter survival in dialysis patients. However, the relationship between physical (motor) fitness and clinical outcomes has never been tested in these patients. METHODS: We tested the…

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Negative / Null Result ReportOpen accessMedicine

Spatial Dimensions of Dengue Virus Transmission across Interepidemic and Epidemic Periods in Iquitos, Peru (1999–2003)

Kelly A. Liebman, Steven T. Stoddard, Amy C. Morrison et al. · 2012 · PLoS neglected tropical diseases

BACKGROUND: Knowledge of spatial patterns of dengue virus (DENV) infection is important for understanding transmission dynamics and guiding effective disease prevention strategies. Because movement of infected humans and mosquito vectors plays a role in the spread and persistence of virus, spatial dimensions of transmission can range from small household foci to large community clusters. Current understanding is limited because past analyses emphasized clinically apparent illness and did not account for the potentially large proportion of inapparent infections. In this study we analyzed both c

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Negative / Null Result ReportOpen accessMedicine

The oral VEGF receptor tyrosine kinase inhibitor pazopanib in combination with the MEK inhibitor trametinib in advanced cholangiocarcinoma

Rachna T. Shroff, Mark Yarchoan, Ashley O’Connor et al. · 2017 · British Journal of Cancer

BACKGROUND: Cholangiocarcinoma is an aggressive malignancy with limited therapeutic options. MEK inhibition and antiangiogenic therapies have individually shown modest activity in advanced cholangiocarcinoma, whereas dual inhibition of…

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Negative / Null Result ReportOpen accessMedicine

IL-6 and IL-13 in Induced Sputum of COPD and Asthma Patients: Correlation with Respiratory Tests

H Grubek-Jaworska, Magdalena Paplińska‐Goryca, Joanna Hermanowicz-Salamon et al. · 2012 · Respiration

BACKGROUND: IL-6 is strongly implicated in the development of chronic obstructive pulmonary disease (COPD). IL-13 is the well-documented central mediator in allergic asthma. IL-6 is attributed to the proinflammatory activities in COPD as…

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Negative / Null Result ReportOpen accessMedicine

A Randomized Phase II/III Study of Dalotuzumab in Combination With Cetuximab and Irinotecan in Chemorefractory,KRASWild-Type, Metastatic Colorectal Cancer

Francesco Sclafani, Tae‐Yop Kim, David Cunningham et al. · 2015 · JNCI Journal of the National Cancer Institute

BACKGROUND: Insulin-like growth factor type 1 receptor (IGF-1R) mediates resistance to epidermal growth factor receptor (EGFR) inhibition and may represent a therapeutic target. We conducted a multicenter, randomized, double blind, phase…

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Negative / Null Result ReportMedicine

Incidence and Predictors of Intracranial Hemorrhage After Minor Head Trauma in Patients Taking Anticoagulant and Antiplatelet Medication

Edward S. Brewer, B. I. Reznikov, Rebecca F. Liberman et al. · 2010 · The Journal of Trauma: Injury, Infection, and Critical Care

BACKGROUND: The yield of head computed tomography (CT) for patients who suffered head trauma with a presenting Glasgow Coma Scale (GCS) score of 15 has been reported to be low, even in patients who are anticoagulated or on antiplatelet…

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Negative / Null Result ReportOpen accessMedicine

Antibiotics for acute bronchitis

Susan M. Smith, Tom Fahey, John Smucny et al. · 2017 · Cochrane Database of Systematic Reviews

Background The benefits and risks of antibiotics for acute bronchitis remain unclear despite it being one of the most common illnesses seen in primary care. Objectives To assess the effects of antibiotics in improving outcomes and to…

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Negative / Null Result ReportMedicine

Risperidone versus olanzapine for the treatment of delirium

Sung‐Wan Kim, Joon‐An Yoo, S. Y. Lee et al. · 2010 · Human Psychopharmacology Clinical and Experimental

OBJECTIVE: This study compared the effectiveness of risperidone and olanzapine in the treatment of delirium. METHODS: This was a 7-day, randomized, comparative clinical trial of risperidone and olanzapine in patients with delirium. The…

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Negative / Null Result ReportOpen accessMedicine

Association of osteopenia and osteoporosis with higher rates of pseudarthrosis and revision surgery in adult patients undergoing single-level lumbar fusion

Syed Khalid, Ravi S. Nunna, Samantha Maasarani et al. · 2020 · Neurosurgical FOCUS

OBJECTIVE: Patients with osteopenia or osteoporosis who require surgery for symptomatic degenerative spondylolisthesis may have higher rates of postoperative pseudarthrosis and need for revision surgery than patients with normal bone…

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Negative / Null Result ReportOpen accessMedicine

A phase I/II study of veliparib (ABT-888) with radiation and temozolomide in newly diagnosed diffuse pontine glioma: a Pediatric Brain Tumor Consortium study

Patricia Baxter, Jack M. Su, Arzu Onar‐Thomas et al. · 2020 · Neuro-Oncology

BACKGROUND: A Pediatric Brain Tumor Consortium (PBTC) phase I/II trial of veliparib and radiation followed by veliparib and temozolomide (TMZ) was conducted in children with newly diagnosed diffuse intrinsic pontine glioma (DIPG). The…

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Negative / Null Result ReportOpen accessMedicine

Dendritic cell paucity in mismatch repair–proficient colorectal cancer liver metastases limits immune checkpoint blockade efficacy

William W. Ho, Igor L. Gomes‐Santos, Shuichi Aoki et al. · 2021 · Proceedings of the National Academy of Sciences

Liver metastasis is a major cause of mortality for patients with colorectal cancer (CRC). Mismatch repair-proficient (pMMR) CRCs make up about 95% of metastatic CRCs, and are unresponsive to immune checkpoint blockade (ICB) therapy. Here…

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Negative / Null Result ReportMedicine

A Randomized Trial of the Off-label Use of Imiquimod, 5%, Cream With vs Without Tazarotene, 0.1%, Gel for the Treatment of Lentigo Maligna, Followed by Conservative Staged Excisions

Mark A. Hyde, Michael L. Hadley, Payam Tristani‐Firouzi et al. · 2012 · Archives of Dermatology

OBJECTIVE: To determine if the complete response rates of lentigo maligna (LM) to imiquimod, 5%, cream can be improved by the addition of a topical retinoid. DESIGN: Prospective randomized study of patients treated with imiquimod alone vs…

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Negative / Null Result ReportOpen accessMedicine

Short-Term Changes after a Weight Reduction Intervention in Advanced Diabetic Nephropathy

Allon N. Friedman, Mary Chambers, Lisa M. Kamendulis et al. · 2013 · Clinical Journal of the American Society of Nephrology

BACKGROUND AND OBJECTIVES: Obesity precedes and is strongly linked to the development of type 2 diabetic nephropathy in most patients, yet little is known about the effects of weight reduction on this disease. This study aimed to establish…

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Negative / Null Result ReportOpen accessMedicine

Coronavirus Disease-2019 in Cancer Patients. A Report of the First 25 Cancer Patients in a Western Country (Italy)

Elisa Maria Stroppa, Ilaria Toscani, Chiara Citterio et al. · 2020 · Future Oncology

Background: We describe cancer patients with coronavirus disease-2019 (COVID-19) infection treated at the Piacenza’s general hospital (north Italy). Materials & methods: 25 cancer patients infected by COVID-19 admitted at the Piacenza’s…

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Negative / Null Result ReportOpen accessMedicine

Evaluating the next generation of RSV intervention strategies: a mathematical modelling study and cost-effectiveness analysis

David Hodgson, Richard Pebody, Jasmina Panovska‐Griffiths et al. · 2020 · BMC Medicine

BACKGROUND: With a suite of promising new RSV prophylactics on the horizon, including long-acting monoclonal antibodies and new vaccines, it is likely that one or more of these will replace the current monoclonal Palivizumab programme. However, choosing the optimal intervention programme will require balancing the costs of the programmes with the health benefits accrued. METHODS: To compare the next generation of RSV prophylactics, we integrated a novel transmission model with an economic analysis. We estimated key epidemiological parameters by calibrating the model to 7 years of historical ep

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Negative / Null Result ReportOpen accessMedicine

Diagnostic Accuracy of T1-Weighted Dynamic Contrast-Enhanced–MRI and DWI-ADC for Differentiation of Glioblastoma and Primary CNS Lymphoma

Xuling Lin, M. Lee, Olivia Buck et al. · 2016 · American Journal of Neuroradiology

BACKGROUND AND PURPOSE: Glioblastoma and primary CNS lymphoma dictate different neurosurgical strategies; it is critical to distinguish them preoperatively. However, current imaging modalities do not effectively differentiate them. We aimed to examine the use of DWI and T1-weighted dynamic contrast-enhanced–MR imaging as potential discriminative tools. MATERIALS AND METHODS: We retrospectively reviewed 18 patients with primary CNS lymphoma and 36 matched patients with glioblastoma with pretreatment DWI and dynamic contrast-enhanced–MR imaging. VOIs were drawn around the tumor on contrast-enhan

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Negative / Null Result ReportMedicine

Association of Kidney Graft Loss With De Novo Produced Donor-Specific and Non-Donor-Specific HLA Antibodies Detected by Single Antigen Testing

Caner Süsal, Dániel Wettstein, Bernd Döhler et al. · 2015 · Transplantation

BACKGROUND: The association of donor-specific HLA antibodies (DSA) with kidney graft failure has been addressed previously; however, the majority of studies were based on small numbers of patients with graft failure. METHODS: We…

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Negative / Null Result ReportOpen accessMedicine

The Disease-Specific Phenotype in Cardiomyocytes Derived from Induced Pluripotent Stem Cells of Two Long QT Syndrome Type 3 Patients

Azra Fatima, Shao Kaifeng, Sven Dittmann et al. · 2013 · PLoS ONE

Long QT syndromes (LQTS) are heritable diseases characterized by prolongation of the QT interval on an electrocardiogram, which often leads to syncope and sudden cardiac death. Here we report the generation of induced pluripotent stems (iPS) cells from two patients with LQTS type 3 carrying a different point mutation in a sodium channel Nav1.5 (p.V240M and p.R535Q) and functional characterization of cardiomyocytes (CM) derived from them. The iPS cells exhibited all characteristic properties of pluripotent stem cells, maintained the disease-specific mutation and readily differentiated to CM. Th

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Negative / Null Result ReportMedicine

The efficacy of melatonin administration on oocyte quality

A. Sertaç Batıoğlu, Uğraş Şahin, Beril Gürlek et al. · 2011 · Gynecological Endocrinology

The aim of the study was to evaluate the efficacy of melatonin administration on oocyte quality in women underwent in vitro fertilization (IVF) cycles. Eighty-five women undergoing IVF cycles were randomized in two groups during IVF-embryo…

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Negative / Null Result ReportOpen accessMedicine

Identification of flubendazole as potential anti-neuroblastoma compound in a large cell line screen

Martin Michaelis, Bishr Agha, Florian Rothweiler et al. · 2015 · Scientific Reports

Flubendazole was shown to exert anti-leukaemia and anti-myeloma activity through inhibition of microtubule function. Here, flubendazole was tested for its effects on the viability of in total 461 cancer cell lines. Neuroblastoma was identified as highly flubendazole-sensitive cancer entity in a screen of 321 cell lines from 26 cancer entities. Flubendazole also reduced the viability of five primary neuroblastoma samples in nanomolar concentrations thought to be achievable in humans and inhibited vessel formation and neuroblastoma tumour growth in the chick chorioallantoic membrane assay. Resis

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Negative / Null Result ReportOpen accessMedicine

Reverse shoulder arthroplasty for proximal humerus fracture using a dedicated stem: radiological outcomes at a minimum 2 years of follow-up—case series

Raffaele Garofalo, Brody A. Flanagin, Alessandro Castagna et al. · 2015 · Journal of Orthopaedic Surgery and Research

BACKGROUND: Complex proximal humeral fractures are very difficult to treat particularly in patients older than 65 years with an osteoporotic bone and tuberosities compromised. The goal of this paper is to evaluate radiological outcomes at mid-term follow-up of proximal humerus fractures treated with reverse shoulder arthroplasty using a dedicated fracture stem. MATERIALS AND METHODS: The study population included 98 patients who underwent reverse shoulder with a dedicated fracture stem for an acute proximal humerus fracture; 87/98 patients were available for analysis. There were 62 female and

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Negative / Null Result ReportOpen accessMedicine

Evaluation of ovarian cancer biomarkers HE4 and CA-125 in women presenting with a suspicious cystic ovarian mass

Karolina Partheen, Björg Kristjánsdóttir, Karin Sundfeldt · 2011 · Journal of Gynecologic Oncology

OBJECTIVE: Women presenting with a large or complex ovarian cyst are referred to extensive surgical staging to ensure the correct diagnosis and treatment of a possible epithelial ovarian cancer. We hypothesized that measurement of the…

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Negative / Null Result ReportOpen accessMedicine

Direct Oral Anticoagulant- or Warfarin-Related Major Bleeding

Yan Xu, Sam Schulman, Dar Dowlatshahi et al. · 2017 · CHEST Journal

BackgroundDirect oral anticoagulants (DOACs) have expanded the armamentarium for antithrombotic therapy. Although DOAC-related major bleeding was associated with favorable outcomes compared with warfarin in clinical trials, warfarin…

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Negative / Null Result ReportOpen accessMedicine

Phytoestrogen consumption from foods and supplements and epithelial ovarian cancer risk: a population-based case control study

Elisa V. Bandera, Melony King, Urmila Chandran et al. · 2011 · BMC Women s Health

BACKGROUND: While there is extensive literature evaluating the impact of phytoestrogen consumption on breast cancer risk, its role on ovarian cancer has received little attention. METHODS: We conducted a population-based case-control study to evaluate phytoestrogen intake from foods and supplements and epithelial ovarian cancer risk. Cases were identified in six counties in New Jersey through the New Jersey State Cancer Registry. Controls were identified by random digit dialing, CMS (Centers for Medicare and Medicaid Service) lists, and area sampling. A total of 205 cases and 390 controls were

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Negative / Null Result ReportOpen accessMedicine

Effect of Alirocumab on Coronary Atheroma Volume in Japanese Patients With Acute Coronary Syndrome ― The ODYSSEY J-IVUS Trial ―

Junya Ako, Kiyoshi Hibi, Kenichi Tsujita et al. · 2019 · Circulation Journal

BACKGROUND: In patients with acute coronary syndrome (ACS), alirocumab reduced the risk of recurring ischemic events. ODYSSEY J-IVUS assessed the effect of alirocumab on coronary atheroma volume in Japanese patients recently hospitalized…

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