Negative / Null Result ReportOpen accessMedicine
Christianson G, Howard ZM, Kenney S et al. · 2026 · mAbs
The use of animal models that can reliably predict drug performance in human patients is critical to antibody therapeutic development. Along with assessing toxicity and efficacy, determining the pharmacokinetic (PK) properties of…
View details →DOI: 10.1080/19420862.2026.2649990 Negative / Null Result ReportMedicine
Lutfi W, Desai ND, Pan Z et al. · 2026 · The Annals of thoracic surgery
Background The choice between bioprosthetic or mechanical surgical aortic valve replacement (SAVR) for dialysis patients is debated. Rapid adoption of transcatheter aortic valve replacement (TAVR) complicates decision-making further. This…
View details →DOI: 10.1016/j.athoracsur.2026.03.007 Negative / Null Result Report
Ross SR, Suzuki H, Urabe J et al. · 2026 · Preprint
1 Ecosystem functioning can be maintained in species-rich communities even under fairly severe perturbations. This is because communities with high richness include variation both in species’ functional roles ( functional diversity ) and…
View details →DOI: 10.64898/2026.06.19.733370 Abandoned HypothesisMedicine
AlTahan FA, AlHadlag A · 2026 · Ocular immunology and inflammation
Purpose To report the first documented case of postoperative endophthalmitis progressing to panophthalmitis in a silicone oil-filled eye (SO) following pars plana vitrectomy (PPV), and to review the relevant literature. Methods A single…
View details →DOI: 10.1080/09273948.2026.2681735 Abandoned HypothesisMedicine
Fan J, Zeng J, Li H · 2026 · Research in developmental disabilities
Background/aims Children with autism spectrum disorder (ASD) often experience conversational difficulties that hinder social interactions and peer relationships. This study examined whether a conversational AI-enhanced peer-mediated…
View details →DOI: 10.1016/j.ridd.2026.105249 Negative / Null Result ReportMedicine
Zheng, Jia, Jing et al. · 2026 · International journal of cancer
This single-center retrospective study evaluated radiation pneumonitis (RP) in 209 treatment-naive EGFR-mutant non-small cell lung cancer (NSCLC) patients receiving first-line third-generation EGFR tyrosine kinase inhibitors (EGFR-TKIs)…
View details →DOI: 10.1002/ijc.70630 Negative / Null Result ReportMedicine
Ng Fat, West, E Jackson · 2026 · BMJ public health
Stopping tobacco smoking, reducing alcohol consumption from high-risk levels, increasing physical activity and improving diet can improve mental well-being. To gain a preliminary estimate of the potential benefits of healthy lifestyle…
View details →DOI: 10.1136/bmjph-2025-004301 Negative / Null Result ReportMedicine
Karlsson, Ekendahl, Lindner · 2026 · Child and adolescent psychiatry and mental health
Individuals with substance use problems have higher mortality risks than the general population. This study aimed to assess all-cause and specific-cause mortality among adolescents and young adults in specialized substance use treatment in…
View details →DOI: 10.1186/s13034-026-01125-1 Negative / Null Result ReportMedicine
Harmantepe, Canturk, Küçük et al. · 2026 · BMC surgery
Low anterior resection syndrome (LARS) is a frequent functional disorder following sphincter-preserving surgery for rectal cancer. This study aimed to assess the impact of surgical approach and anastomosis distance on LARS development. We…
View details →DOI: 10.1186/s12893-026-03975-0 Null DatasetMedicine
Lin, Cheng, Chen et al. · 2026 · Avian pathology : journal of the W.V.P.A
Abstract To enable differential detection of virulent and attenuated strains of duck short beak and dwarfism syndrome virus (SBDSV), we developed a fluorescent quantitative PCR (qPCR) assay based on locked nucleic acid (LNA)-TaqMan probes.…
View details →DOI: 10.1080/03079457.2026.2692641 Negative / Null Result ReportMedicine
Sun, Li, Li et al. · 2026 · Journal of food science
Lead (Pb) exposure is a major environmental risk factor for cognitive impairment. This effect is mainly caused by oxidative stress, mitochondrial dysfunction in the hippocampus, and neuronal apoptosis. This study examined whether black…
View details →DOI: 10.1111/1750-3841.71233 Negative / Null Result ReportMedicine
Manca, Paulus, Almeida et al. · 2026 · Neuroscience
Social connectedness strongly influences health and longevity, and adult pair bonds provide psychological benefits distinct from other social relationships. Oxytocin (OT), corticotropin-releasing hormone (CRH), and opioids play an…
View details →DOI: 10.1016/j.neuroscience.2026.06.028 Negative / Null Result ReportMedicine
Ertürkmen Aru, Büke, Saat et al. · 2026 · Familial cancer
Biallelic loss-of-function variants in NTHL1 are associated with an autosomal recessive cancer predisposition syndrome, whereas the cancer risk associated with monoallelic NTHL1 variants remains uncertain. The recurrent truncating variant…
View details →DOI: 10.1007/s10689-026-00578-9 Negative / Null Result ReportMedicine
Fiorenza, Millot, Lecomte et al. · 2026 · The Journal of antimicrobial chemotherapy
Prosthetic joint infections (PJI) of the hip and knee are most often caused by Staphylococcus spp. and require long-term treatment with rifampicin and fluoroquinolone as first-line treatment. However, resistance, contraindications or…
View details →DOI: 10.1093/jac/dkag219 Negative / Null Result ReportMedicine
Kobayashi, Yabuki, Sugiyama et al. · 2026 · The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association
ObjectiveNo studies have examined the effectiveness of platelet-rich plasma (PRP) alone and platelet-rich fibrin (PRF) without alveolar bone grafting or other bone substitutes for alveolar cleft repair during infancy. This study evaluated…
View details →DOI: 10.1177/10556656261417033 Negative / Null Result ReportMedicine
Sulciner, Wang, Fairweather et al. · 2026 · Cureus
ON-Q pumps, or surgically placed wound catheters, provide analgesia without the side effects of epidural catheters. This study aimed to evaluate perioperative outcomes, including total postoperative oral morphine milligram equivalents…
View details →DOI: 10.7759/cureus.109129 Negative / Null Result ReportMedicine
Sæther, Butt, Eubank et al. · 2026 · Frontiers in psychology
Psychological stressors have become a natural part of the process of developing skills in talent development environments of youth athletes. However, there is little research on psychological stressors among talented female athletes and…
View details →DOI: 10.3389/fpsyg.2026.1803701 Negative / Null Result ReportMedicine
Jamei-Martel, Garibaldi, Castroviejo Fernández et al. · 2026 · JSES international
The optimal management of high-grade acromioclavicular (AC) joint dislocations remains controversial. While surgical treatment improves radiographic alignment, its impact on functional outcomes remains debated. This study prospectively…
View details →DOI: 10.1016/j.jseint.2026.101722 Negative / Null Result ReportMedicine
Huang, Yin, Lin · 2026 · Transplantation proceedings
The utilization of hepatitis B surface antigen-positive (HBsAg+) living kidney donors is a strategy to expand the donor pool. However, concerns regarding their renal safety after nephrectomy persist due to the potential impact of chronic…
View details →DOI: 10.1016/j.transproceed.2026.06.001 Negative / Null Result ReportMedicine
Foster, Millist, Germaine et al. · 2026 · Epilepsia open
ES-481 is a novel potent and selective antagonist of TARP-y8-dependent AMPA receptors. We aimed to assess the potential efficacy, safety and tolerability, and pharmacokinetics of different doses of ES-481 as an add-on anti-seizure…
View details →DOI: 10.1002/epi4.70294 Negative / Null Result ReportMedicine
Ucan Gunduz, Nizam Tekcan, Erdem et al. · 2026 · Journal of pediatric ophthalmology and strabismus
To investigate microstructural alterations in the retina, choroid, and optic nerve head in children with spina bifida using optical coherence tomography. Thirty-eight children with spina bifida and 32 children without spina bifida were…
View details →DOI: 10.3928/01913913-20260417-01 Negative / Null Result ReportMedicine
Zamaniyan, Abbasi, Habibpour et al. · 2026 · International journal of reproductive biomedicine
Diminished ovarian reserve is one of the most important issues in in vitro fertilization cycles. Some authors have reported beneficial effects of dual triggering in women with poor ovarian response, whereas other investigators have…
View details →DOI: 10.18502/ijrm.v24i4.21171 Negative / Null Result ReportMedicine
Alencar, Teles, Cunha et al. · 2026 · Revista brasileira de ortopedia
Artificial intelligence (AI) tools based on natural language, such as ChatGPT 4.1 mini (OpenAI Group PBC) and Gemini 2.5 Flash (Alphabet Inc.), are used by patients as sources of medical information. The current study aimed to evaluate and…
View details →DOI: 10.1055/s-0046-1820460 Negative / Null Result ReportMedicine
Alencar, Teles, Cunha et al. · 2026 · Revista brasileira de ortopedia
Artificial intelligence (AI) tools based on natural language, such as ChatGPT 4.1 mini (OpenAI Group PBC) and Gemini 2.5 Flash (Alphabet Inc.), are used by patients as sources of medical information. The current study aimed to evaluate and…
View details →DOI: 10.1055/s-0046-1820461 Negative / Null Result ReportMedicine
Petrina, Dong, Beamer et al. · 2026 · Open forum infectious diseases
Vaginal dysbiosis is associated with HIV acquisition and preterm delivery. Our objective was to evaluate prevalent vaginal infections, and changes in microbiota and cytokines among pregnant and breastfeeding women from 4 African countries…
View details →DOI: 10.1093/ofid/ofag329 Negative / Null Result ReportMedicine
Hardika, Kurniawan, Laksmi et al. · 2026 · Journal of the ASEAN Federation of Endocrine Societies
Leukocyte telomere length (LTL) is considered a biomarker of cellular senescence. Previous studies have reported the associations between shortened telomere length and type 2 diabetes mellitus (T2DM). However, the role of underlying…
View details →DOI: 10.15605/jafes.041.01.5071 Negative / Null Result ReportMedicine
Durgala, Horvath, Skrabanova et al. · 2026 · Frontiers in behavioral neuroscience
Traumatic brain injury (TBI) is a major health concern in the current population. Animal models are increasingly important for identifying early neurobehavioural changes associated with mild to severe as well as repetitive brain injuries.…
View details →DOI: 10.3389/fnbeh.2026.1839876 Negative / Null Result ReportMedicine
Choi, Park, Song et al. · 2026 · Psychiatry investigation
Although its potential antidepressant effects have been suggested, evidence on long-term outcomes for post-delivery depression remains limited. We evaluated whether peripartum intravenous magnesium sulfate (MgSO₄) is associated with…
View details →DOI: 10.30773/pi.2025.0427 Negative / Null Result ReportMedicine
Lamb, Akulian, Musani et al. · 2026 · Respiratory research
Single chain urokinase (LTI-01) intrapleural enzymatic therapy (IET) was safe and promising in a phase 1 clinical trial to overcome failed drainage in patients with pleural infection. The LTI-01-2001 phase 2a trial was a randomized,…
View details →DOI: 10.1186/s12931-026-03782-4 Negative / Null Result ReportMedicine
Akdogan, Aydin · 2026 · BMC oral health
Data comparing the wear of 3D printed permanent resin (PR) and milled zirconia (Z) to that of primary tooth enamel are limited. This study aimed to investigate the wear behavior of two materials and their effect on antagonist primary…
View details →DOI: 10.1186/s12903-026-08916-0