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Browse the failure-mode index

12,222 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

Mannose-Binding Lectin Levels Could Predict Prognosis in IgA Nephropathy

Weiyi Guo, Li Zhu, Sijun Meng et al. · 2017 · Journal of the American Society of Nephrology

IgA nephropathy (IgAN) is characterized by infections followed by episodic gross hematuria. Deficiency of mannose-binding lectin (MBL) is associated with recurrent infection in many diseases, but controversy exists regarding the role of…

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Negative / Null Result ReportOpen accessMedicine

Methotrexate in chronic-recurrent calcium pyrophosphate deposition disease: no significant effect in a randomized crossover trial

Axel Finckh, Geraldine M Mc Carthy, Anne Madigan et al. · 2014 · Arthritis Research & Therapy

INTRODUCTION: Calcium pyrophosphate deposition (CPPD) may cause severe arthropathy, major joint destruction and treatment options are limited. The aim of this study was to test the therapeutic efficacy of methotrexate (MTX) in chronic or recurrent CPPD arthropathy. METHODS: Patients with CPPD arthropathy were randomized to receive either weekly subcutaneous injections of 15 mg/week of MTX or placebo (PBO) for three months, in a double-blind, crossover randomized controlled trial. Inclusion criteria comprised definite CPPD disease, recurrent arthritis or persistent polyarthritis, and an insuffi

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Negative / Null Result ReportOpen accessMedicine

Replication of GWAS Associations for GAK and MAPT in Parkinson's Disease

Shannon Rhodes, Janet S. Sinsheimer, Yvette Bordelon et al. · 2010 · Annals of Human Genetics

In the investigation of disease aetiology, the genome-wide association study (GWAS) provides a hypothesis-free investigation of the broader human genome and, as with all scientific investigations, replication is essential to validate any…

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Negative / Null Result ReportMedicine

Femoral shaft bowing in the coronal plane has more significant effect on the coronal alignment of TKA than proximal or distal variations of femoral shape

Jong‐Min Kim, Soo-Heon Hong, Jong‐Min Kim et al. · 2014 · Knee Surgery Sports Traumatology Arthroscopy

PURPOSE: The aim of this study was to determine (1) variations in the shape of the proximal, middle, and distal femur in a series of Korean patients who had undergone total knee arthroplasty (TKA), (2) the preoperative relationship between…

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Negative / Null Result ReportMedicine

A culturally sensitive Transition Assistance Program for stroke caregivers: Examining caregiver mental health and stroke rehabilitation

Paul B. Perrin, Andrew J. Johnston, Bruce Vogel et al. · 2010 · The Journal of Rehabilitation Research and Development

This study developed and implemented the Transition Assistance Program (TAP) for stroke caregivers. The program is composed of (1) skill development, (2) education, and (3) supportive problem solving. Sixty-one dyads (n = 122)…

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Replication FailureOpen accessMedicine

A randomized, controlled study to investigate the efficacy and safety of a topical gentamicin-collagen sponge in combination with systemic antibiotic therapy in diabetic patients with a moderate or severe foot ulcer infection

Ilker Uçkay, Benjamin Kressmann, Sarah Malacarne et al. · 2018 · BMC Infectious Diseases

BACKGROUND: An adjunctive topical therapy with gentamicin-sponges to systemic antibiotic therapy might improve the healing of infected diabetic foot ulcers (DFUI). METHODS: Single-center, investigator-blinded pilot study, randomizing (1:1) the gentamicin-sponge with systemic antibiotic versus systemic antibiotics alone for patients with DFUI. RESULTS: We included 88 DFUI episodes with 43 patients in the gentamicin-sponge arm and 45 in the control arm. Overall, 64 (64/88; 73%) witnessed total clinical cure, 13 (15%) significant improvement, and 46 (52%) showed total eradication of all pathogens

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Failed Experiment ReportOpen accessMedicine

Lack of Protection Against Ebola Virus from Chloroquine in Mice and Hamsters

Darryl Falzarano, David Safronetz, Joseph Prescott et al. · 2015 · Emerging infectious diseases

The antimalarial drug chloroquine has been suggested as a treatment for Ebola virus infection. Chloroquine inhibited virus replication in vitro, but only at cytotoxic concentrations. In mouse and hamster models, treatment did not improve survival. Chloroquine is not a promising treatment for Ebola. Efforts should be directed toward other drug classes.

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Negative / Null Result ReportOpen accessMedicine

Nivolumab with or without ipilimumab in pediatric patients with high-grade CNS malignancies: Safety, efficacy, biomarker, and pharmacokinetics—CheckMate 908

Ira J. Dunkel, François Doz, Nicholas K. Foreman et al. · 2023 · Neuro-Oncology

BACKGROUND: Therapeutic options are limited in pediatric CNS malignancies. CheckMate 908 (NCT03130959) is an open-label, sequential-arm, phase 1b/2 study investigating nivolumab (NIVO) and NIVO + ipilimumab (IPI) in pediatric patients with…

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Negative / Null Result ReportOpen accessMedicine

External Validation of the Kidney Failure Risk Equation and Re-Calibration with Addition of Ultrasound Parameters

C. Lennartz, John W. Pickering, Sarah Seiler-Mußler et al. · 2016 · Clinical Journal of the American Society of Nephrology

BACKGROUND AND OBJECTIVES: Progression of CKD toward ESRD is heterogeneous. The Kidney Failure Risk Equation (KFRE) was developed to identify CKD patients at high risk of ESRD. We aimed to externally validate KFRE and to test whether the…

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Negative / Null Result ReportOpen accessMedicine

Pulmonary sarcomatoid carcinoma: University of Cincinnati experience

Nagla Abdel Karim, James Schuster, Ihab Eldessouki et al. · 2017 · Oncotarget

// Nagla Abdel Karim 1 , James Schuster 2 , Ihab Eldessouki 1 , Ola Gaber 1 , Tariq Namad 3 , Jiang Wang 4 , Changchun Xie 5 and John C. Morris 1 1 Vontz Center for Molecular Studies, University of Cincinnati, Cincinnati, OH 45219, USA 2 University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA 3 Military Hospital of Mohammed V, Department of Medical Oncology, Quartier Irfane, Rabat 10080, Morocco 4 UC Health University Hospital, Department of Pathology and Laboratory Medicine, Cincinnati, OH 45219, USA 5 Division of Biostatistics and Bioinformatics, Department of Environmental H

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Negative / Null Result ReportOpen accessMedicine

Effects of dopamine on reinforcement learning and consolidation in Parkinson’s disease

John P Grogan, Demitra Tsivos, Laura Smith et al. · 2017 · eLife

Emerging evidence suggests that dopamine may modulate learning and memory with important implications for understanding the neurobiology of memory and future therapeutic targeting. An influential hypothesis posits that dopamine biases reinforcement learning. More recent data also suggest an influence during both consolidation and retrieval. Eighteen Parkinson's disease patients learned through feedback ON or OFF medication, with memory tested 24 hr later ON or OFF medication (4 conditions, within-subjects design with matched healthy control group). Patients OFF medication during learning decre

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Negative / Null Result ReportOpen accessMedicine

Anti-VEGF treatment of macular edema associated with retinal vein occlusion: patterns of use and effectiveness in clinical practice (ECHO study report 2)

J. Michael Jumper, Pravin U. Dugel, Sanford Chen et al. · 2018 · Clinical ophthalmology

PURPOSE: To evaluate the efficacy, safety, and injection frequency of vascular endothelial growth factor (VEGF) antagonists in the treatment of macular edema secondary to retinal vein occlusion (RVO) in clinical practice. PATIENTS AND…

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Negative / Null Result ReportOpen accessMedicine

Circulating Unmetabolized Folic Acid: Relationship to Folate Status and Effect of Supplementation

Carolyn Tam, Deborah L. O’Connor, Gideon Koren · 2012 · Obstetrics and Gynecology International

There are increasing concerns that exposure to unmetabolized folic acid, which results from folic acid intakes that overwhelm the liver's metabolic capacity, may be associated with adverse effects. In this paper, we examined the folic acid status of women of reproductive age in relation to dietary intake and the effect of folic acid supplementation (1.1 mg or 5 mg). Plasma unmetabolized folic acid was not significantly correlated with folate intake estimated by food frequency questionnaire or biomarkers. The proportion of women with detectable levels of unmetabolized folic acid increased from

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Negative / Null Result ReportOpen accessMedicine

The Era of Antimicrobial Peptides: Use of Hepcidins to Prevent or Treat Bacterial Infections and Iron Disorders

Carolina Barroso, Pedro Carvalho, M.C. Nunes et al. · 2021 · Frontiers in Immunology

The current treatments applied in aquaculture to limit disease dissemination are mostly based on the use of antibiotics, either as prophylactic or therapeutic agents, with vaccines being available for a limited number of fish species and pathogens. Antimicrobial peptides are considered as promising novel substances to be used in aquaculture, due to their antimicrobial and immunomodulatory activities. Hepcidin, the major iron metabolism regulator, is found as a single gene in most mammals, but in certain fish species, including the European sea bass ( Dicentrarchus labrax ), two different hepci

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Negative / Null Result ReportOpen accessMedicine

The effect of preoperative chemotherapy treatment in surgically treated intrahepatic cholangiocarcinoma patients—A multi‐institutional analysis

Stefan Buettner, Bas Groot Koerkamp, Aslam Ejaz et al. · 2017 · Journal of Surgical Oncology

INTRODUCTION: While preoperative chemotherapy (pCT) is utilized in many intra-abdominal cancers, the use of pCT among patients with intrahepatic cholangiocarcinoma (ICC) remains ill defined. As such, the objective of the current study was…

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Negative / Null Result ReportMedicine

Reference values for the 6-Min Walking Test in obese subjects

Paolo Capodaglio, Shirley A. De Souza, Cinzia Parisio et al. · 2012 · Disability and Rehabilitation

PURPOSE: The 6-Min Walking Test (6MWT) is widely used to measure the performance in various chronic conditions, such as in obese subjects. Reference equations for predicting distance walked during 6MWT specifically in adult obese subjects…

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Negative / Null Result ReportOpen accessMedicine

Selective Mediastinal Lymph Node Dissection Strategy for Clinical T1N0 Invasive Lung Cancer: A Prospective, Multicenter, Clinical Trial

Yang Zhang, Chaoqiang Deng, Qiang Zheng et al. · 2023 · Journal of Thoracic Oncology

INTRODUCTION: We aimed to prospectively evaluate our previously proposed selective mediastinal lymph node (LN) dissection strategy for peripheral clinical T1N0 invasive NSCLC. METHODS: This is a multicenter, prospective clinical trial in…

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Negative / Null Result ReportMedicine

Lack of Significant Effect of Bilastine Administered at Therapeutic and Supratherapeutic Doses and Concomitantly With Ketoconazole on Ventricular Repolarization: Results of a Thorough QT Study (TQTS) With QT‐Concentration Analysis

Benoît Tyl, Meriam Kabbaj, Sara M. Azzam et al. · 2011 · The Journal of Clinical Pharmacology

The effect of bilastine on cardiac repolarization was studied in 30 healthy participants during a multiple-dose, triple-dummy, crossover, thorough QT study that included 5 arms: placebo, active control (400 mg moxifloxacin), bilastine at…

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Negative / Null Result ReportOpen accessMedicine

Fitting methods for intravoxel incoherent motion imaging of prostate cancer on region of interest level: Repeatability and gleason score prediction

Harri Merisaari, Parisa Movahedi, Ileana Montoya Perez et al. · 2016 · Magnetic Resonance in Medicine

Purpose To evaluate different fitting methods for intravoxel incoherent motion (IVIM) imaging of prostate cancer in the terms of repeatability and Gleason score prediction. Methods Eighty‐one patients with histologically confirmed prostate…

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Negative / Null Result ReportMedicine

Cross-cultural Adaptation, Reliability and Validity of the DAFS-R in a Sample of Brazilian Older Adults

Fabrício Pereira, Alexandra Martini de Oliveira, Breno S. Diniz et al. · 2010 · Archives of Clinical Neuropsychology

The Direct Assessment of Functional Status-Revised (DAFS-R) is an instrument developed to objectively measure functional capacities required for independent living. The objective of this study was to translate and culturally adapt the…

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Negative / Null Result ReportOpen accessMedicine

The Predictive Value of the Fine-Needle Aspiration Diagnosis “Suspicious for a Follicular Neoplasm, Hürthle Cell Type” in Patients With Hashimoto Thyroiditis

Michael H. Roh, Vickie Y. Jo, Edward B. Stelow et al. · 2010 · American Journal of Clinical Pathology

A fine-needle aspiration sample composed exclusively of Hürthle cells is interpreted as "suspicious for a follicular neoplasm, Hürthle cell type" (SFNHCT). Because some nonneoplastic Hürthle cell proliferations in Hashimoto thyroiditis…

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Negative / Null Result ReportOpen accessMedicine

Uremic pruritus. Clinical and experimental studies

Mona Ståhle‐Bäckdahl · 2026 · Acta Dermato Venereologica

The aim of the study was to investigate clinical aspects of pruritus in maintenance hemodialysis patients and to evaluate factors of putative pathogenic importance. 60-65% of the patients in a maintenance hemodialysis program during a…

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Negative / Null Result ReportOpen accessMedicine

A year of COVID-19 GWAS results from the GRASP portal reveals potential genetic risk factors

Florian Thibord, Melissa V. Chan, Ming‐Huei Chen et al. · 2022 · Human Genetics and Genomics Advances

Host genetic variants influence the susceptibility and severity of several infectious diseases, and the discovery of genetic associations with coronavirus disease 2019 (COVID-19) phenotypes could help to develop new therapeutic strategies…

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Negative / Null Result ReportOpen accessMedicine

A pilot study: effectiveness of local injection of autologous platelet-rich plasma in treating women with stress urinary incontinence

Cheng‐Yu Long, Kun‐Ling Lin, Chin-Ru Shen et al. · 2021 · Scientific Reports

The study aims to evaluate the effectiveness of local injection of autologous platelet rich plasma (A-PRP) as a treatment for women suffering from stress urinary incontinence (SUI). In a prospective intervention study, twenty consecutive women suffering from SUI were treated with A-PRP injection at anterior vaginal wall where mid-urethra locates. Self-reported questionnaires were used to measure pre-treatment, 1 month and 6 months post-treatment symptom severity. Secondary outcomes of sexual function and treatment effect sorted by age were analyzed with valid statistical methods. A-PRP is effe

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Negative / Null Result ReportOpen accessMedicine

Incidence and prognostic significance of karyotypic subgroups in older patients with acute myeloid leukemia: the Swedish population-based experience

Vladimir Lazarević, A-S Hörstedt, Bertil Johansson et al. · 2014 · Blood Cancer Journal

The Swedish population-based acute myeloid leukemia registry contains data from 3251 patients (excluding acute promyelocytic leukemia) diagnosed between 1997 and 2006. Informative cytogenetic data from 1893 patients were retrospectively…

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Negative / Null Result ReportMedicine

A Comparison of the Ex-PRESS ™ Mini Glaucoma Shunt With Standard Trabeculectomy in the Surgical Treatment of Glaucoma

Lionel A. Marzette, Leon W. Herndon · 2011 · Ophthalmic surgery, lasers & imaging retina

BACKGROUND AND OBJECTIVE: To compare the success and complication rates of patients with glaucoma who had an Ex-PRESS mini glaucoma shunt device implantation (Optonol, Ltd., Neve Ilan, Israel) to those who had conventional trabeculectomy.…

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