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20,217 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 Report

A174 TESTING FOR AND INCIDENCE OF CELIAC DISEASE AUTOIMMUNITY SAW SIGNIFICANT BUT TEMPORARY DECLINES DURING COVID-19 PANDEMIC

J A King, S Coward, G G Kaplan et al. · 2024 · Journal of the Canadian Association of Gastroenterology

Abstract Background Celiac disease (CD) is an autoimmune disorder with various complications and long-term health risks. The COVID-19 pandemic affected the entire healthcare system—including screening for and diagnosing non-infectious…

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Negative / Null Result Report

Lack of Association between Cholelithiasis and Significant Coronary Artery Disease: An Autopsy Study from Greece

Christos Soutis, Chara Spiliopoulou, Nikolaos Goutas et al. · 2022 · Journal of Advances in Medicine and Medical Research

Aims: Cholelithiasis or Gallstone disease and coronary artery disease have been reported to share several common risk factors. The aim of this study was to examine if there is an association between coronary artery disease (CAD) and…

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Negative / Null Result Report

Significant association of specific DRB1 & DQB1 sequence feature variant types with systemic sclerosis autoantibodies types and racial groups (159.20)

Richard Scheuermann, Nishanth Marthandan, Paula Guidry et al. · 2012 · The Journal of Immunology

Abstract The sequence feature variant type (SFVT) approach to genetic association analysis has previously identified parts of HLA proteins that are associated with development of a variety of autoimmune diseases. Using the SFVT approach,…

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Negative / Null Result Report

A200 HIGH-DEFINITION CHROMOENDOSCOPY RESULTS IN MORE SIGNIFICANT DYSPLASIA DETECTION THAN WHITE LIGHT ENDOSCOPY WITH RANDOM BIOPSIES IN ULCERATIVE COLITIS PATIENTS

T T Hoang, Y Leung, G Rosenfeld et al. · 2023 · Journal of the Canadian Association of Gastroenterology

Abstract Background Ulcerative colitis (UC) is an inflammatory bowel disease that results in inflammation of the colonic mucosa, leading to abdominal pain, rectal bleeding, weight loss, and diarrhea. This chronic inflammation results in a…

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Negative / Null Result Report

Role of Carotid Intima-Media Thickness and Carotid Plaque in Predicting Significant Coronary Artery Stenosis in Thai Patients with Chronic Coronary Syndrome: A Cross-Sectional Study

· 2022 · Journal of the Medical Association of Thailand

Objective: To evaluate the diagnostic role of carotid artery intima-media thickness and plaque for significant coronary artery disease (CAD) in Thai patients with chronic coronary syndrome (CCS) when coronary angiography (CAG) was…

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Negative / Null Result Report

Association of postsystolic shortening on stress echocardiography and significant coronary artery stenosis: A single‐centre retrospective cohort study

Joel Toftgård, Henrik Hedskog, Lars Rune et al. · 2024 · Clinical Physiology and Functional Imaging

Abstract Background Postsystolic shortening (PSS) is one of the proposed quantitative measures to predict myocardial ischaemia in the stress echocardiographic (SE) evaluation. It is previously known that hypo‐/akinesia (HA) correlates well…

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Negative / Null Result Report

Association of TSH Levels in the Therapeutically Neglected Range of 6.5–8 mIU/L with Significant Changes in Liver and Kidney Function: A Retrospective Study of the Kashmiri Population

Tousief Ahmed, Ruqaya Aziz · 2022 · Sudan Journal of Medical Sciences

Background: The thyroid gland secretes hormones crucial for growth, differentiation, regulation of metabolic processes, and homeostasis. In response to underactivity of this gland, the pituitary secretes thyrotropin, also known as the…

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Negative / Null Result Report

Lack of Significant Association between Stromal Tumor-Infiltrating Lymphocytes (TILs) and 2014 FIGO Stage in Epithelial Ovarian Cancer: A Cross-Sectional Study

Amanda Putri, Aswiyanti Asri, Puja Agung Antonius · 2026 · JUXTA: Jurnal Ilmiah Mahasiswa Kedokteran Universitas Airlangga

Highlights: Understanding the relationship between TIL infiltration and tumor stage could refine prognostic models and guide targeted therapies. Tumor-infiltrating lymphocytes density is considered an essential immune marker in ovarian…

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Negative / Null Result Report

A192 CONSUMPTION OF FOOD LOWER IN TRYPTOPHAN IS ASSOCIATED WITH SIGNIFICANT ANXIETY IN PATIENTS WITH CELIAC DISEASE

V Gupta, A Jivraj, D Armstrong et al. · 2022 · Journal of the Canadian Association of Gastroenterology

Abstract Background Tryptophan, an essential amino acid found in many protein-based foods, has been involved in the pathogenesis of mood disorders and celiac disease (CeD). However, dietary tryptophan consumption has not been investigated…

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Negative / Null Result Report

Heparinized venous blood gas syringes are associated with a significant decrease in measured packed cell volume in dogs due to hemodilution

Coyne M. Hopey, Dana Caldwell, Erin Binagia et al. · 2025 · Journal of the American Veterinary Medical Association

Abstract OBJECTIVE To assess the effect of hemodilution on PCV when commercial preheparinized venous blood gas (PH-VBG) syringes are used compared to directly filled Hct tubes, and to evaluate the impact of delayed centrifugation on PCV.…

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Negative / Null Result Report

Allergies, asthma treatment, and eviction diet have a significant impact on the respiratory effort during sleep and the apnea-hypopnea index in children with obstructive sleep apnea-obesity/asthma association: A STROBE-compliant study

Kalomoira Kefala, Philippe Guerin · 2026 · Medicine

The pathophysiological mechanisms implicated in obstructive sleep apnea (OSA) associated with asthma/allergies remain unclear. Apnea-hypopnea index (AHI) alone is insufficient to accurately guide adequate treatment without identifying the…

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Negative / Null Result Report

Association of Dyslipidemia with Clinically Significant Macular Edema (CSME) in Type – II Diabetes Mellitus

Md. Mufakh Kharul Islam, Md. Mizanur Rahman, Md. Khalid Hossain et al. · 2022 · Scholars Journal of Applied Medical Sciences

Aim: To observe the association between dyslipidemia and CSME in Type – II diabetes mellitus. Method: With convenience type of sampling technique 36 patients of diabetic retinopathy (DR) with CSME (Group–I) and another 35 patients of DR…

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Negative / Null Result Report

Single nucleotide polymorphism of the promotor region of Interleukin-10 gene did not show significant association with spontaneous clearance of hepatitis C virus infection in Egyptian patients

Fatma Waly, Maysaa El Sayed Zaki, Hany Shabana et al. · 2023 · Gastroenterology & Hepatology: Open Access

Introduction: Accurate etiologies of spontaneous clearance of HCV infection are hard to be clarified. However, it is proposed that genetically determined interleukin-10 (IL-10) changes play an important function in HCV elimination.…

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Negative / Null Result Report

CT Radiomics Models Did Not Outperform Experts in Predicting [68Ga]Ga-PSMA-PET Positivity in Prostate Cancer Lymph Node Staging

Thula Cannon Walter-Rittel, Boris Gorodetski, Alexander Hartenstein et al. · 2026 · Current Oncology

Background: The use of [68Ga]Ga-PSMA-PET/CT for prostate cancer (PCa) staging is limited by cost and availability. This study evaluates whether radiomic features from contrast-enhanced (CE) CT can predict PSMA-positive lymph nodes (LNs) as…

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Negative / Null Result Report

Cyber defence automation: Can AI outperform hackers?

Vitalii Yasenenko · 2025 · Technologies and Engineering

Growing cyber threats in the context of digital transformation require improved methods of automating cyber defence, in particular, through the use of artificial intelligence to detect and respond to attacks. The purpose of the study was…

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Negative / Null Result Report

Can Artificial Intelligence Outperform Humans in ETF Management?

Sahana Ganesan · 2024 · Journal of Student Research

‘Exchange Traded Funds’ (ETFs) are basket/bundle funds consisting of a portfolio of stock assets from multiple companies and organizations, traded similar to normal stocks. ETFs help with diversification of the investment, risk management…

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