Negative / Null Result ReportOpen accessMedicine
Hashem S, Murhega RB, Migabo PA · 2026 · Radiology case reports
The ectopic posterior pituitary represents a rare congenital malformation attributable to aberrant embryogenesis of the neurohypophysis. Although it may occur as an isolated anomaly, it is frequently concomitant with other congenital…
View details →DOI: 10.1016/j.radcr.2026.03.050 Negative / Null Result ReportOpen accessMedicine
de Oliveira Castro Marques TR, Vidal SA, da Costa HA et al. · 2026 · Hematology, transfusion and cell therapy
Background Stroke, the most severe neurological complication of sickle cell disease, can result in irreversible sequelae and death. Transcranial Doppler combined with periodic blood transfusions reduces the chances of stroke by 90 %. In…
View details →DOI: 10.1016/j.htct.2026.106458 Negative / Null Result ReportMedicine
Tu Y, Miao J, Wu Q et al. · 2025 · Respiratory medicine
Background Previous epidemiological studies have explored the association between obstructive sleep apnea (OSA) and osteoporosis (OP), with inconclusive results due to various biases. Herein, we sought to determine the causal association…
View details →DOI: 10.1016/j.rmed.2025.108090 Negative / Null Result ReportMedicine
Guarneri C, Reschini M, Pinna M et al. · 2024 · Journal of assisted reproduction and genetics
Purpose To evaluate whether a second biopsy, following a first diagnostic failure on blastocysts tested for preimplantation genetic testing for monogenic diseases (PGT-M), allows to obtain genetic diagnosis and to what extent this…
View details →DOI: 10.1007/s10815-024-03078-w Negative / Null Result Report
Mehta SP, Antonio Aguirre B, See WYN et al. · 2025 · Preprint
Purpose Whole exome or genome sequencing (WES and WGS, respectively) can be valuable in identifying the molecular basis of inherited retinal disorders (IRD), particularly when panel-based testing yields negative or inconclusive results.…
View details →DOI: 10.1101/2025.03.03.25322102 Negative / Null Result ReportOpen accessMedicine
Su XY, Schroder A, Tse LA et al. · 2025 · BMC research notes
Background Sex hormones may play a role in the development of nasopharyngeal carcinoma (NPC), but the evidence is limited. Methods This case-control study collected information on sex hormonal and reproductive factors of 99 female incident…
View details →DOI: 10.1186/s13104-025-07471-1 Negative / Null Result Report
Khorram A · 2024 · Preprint
Abstract Introduction: To date, studies exploring shockwave-assisted orthodontic tooth movement and tooth mobility have produced inconclusive results, largely attributable to varying methodologies and a lack of standardized reporting. This…
View details →DOI: 10.21203/rs.3.rs-5280491/v1 Negative / Null Result ReportOpen accessMedicine
Rosa ML, Bordignon C, Schuch JB et al. · 2026 · Diagnostics (Basel, Switzerland)
Background/Objectives : Formalin-fixed paraffin-embedded tissue is widely used in pathology and molecular diagnostics, yet its variable quality can critically influence the accuracy of sequencing-based analyses. This study investigated…
View details →DOI: 10.3390/diagnostics16111595 Negative / Null Result ReportOpen accessMedicine
Gopalaswamy R, Kumar N, Vashistha H et al. · 2023 · Frontiers in public health
Introduction Truenat MTB-RIF assay (Truenat), a nucleic acid amplification test (NAAT), is a real-time polymerase chain reaction (RT-PCR) chip-based assay that can detect Mycobacterium tuberculosis ( Mtb ) and rifampicin (RIF) drug…
View details →DOI: 10.3389/fpubh.2023.1255756 Negative / Null Result ReportMedicine
Tavelli R, Callens M, Grootaert C et al. · 2024 · Trends in Food Science & Technology.
Microplastics (MPs) contaminate the global marine and terrestrial ecosystems. This environmental contamination can enter the food chain, with MPs found in drinking water, fishery products and other food categories. Consequently, ingestion…
View details →DOI: 10.1016/j.tifs.2022.08.021 Negative / Null Result ReportMedicine
Nohales M, Coello A, Martin A et al. · 2023 · Journal of assisted reproduction and genetics
Purpose To investigate whether embryo rebiopsy increases the yield of in vitro fertilization (IVF) cycles. Methods Retrospective study including 18,028 blastocysts submitted for trophectoderm biopsy and preimplantation genetic testing for…
View details →DOI: 10.1007/s10815-023-02875-z Negative / Null Result ReportMedicine
Cummings M, Madhavan S · 2024 · Experimental brain research
Ischemic Conditioning (IC) is a procedure involving brief periods of occlusion followed by reperfusion in stationary limbs. Blood Flow Restriction with Exercise (BFR-E) is a technique comprising blood flow restriction during aerobic or…
View details →DOI: 10.1007/s00221-024-06941-5 Negative / Null Result ReportOpen accessMedicine
Salgotra M, Bharti N, Sinha V et al. · 2024 · Journal of pharmacy & bioallied sciences
Introduction Although PCOS affects reproductive health, its consequences on the outcome of pregnancies are still up for discussion. Comparing the pregnancy outcomes of women with PCOS to a control group was the goal of this retrospective…
View details →DOI: 10.4103/jpbs.jpbs_233_24 Negative / Null Result ReportMedicine
Linthorst J, Nivard M, Sistermans EA · 2024 · Cell reports
The properties of cell-free DNA (cfDNA) are intensely studied for their potential as non-invasive biomarkers. We explored the effect of common genetic variants on the concentration and fragmentation properties of cfDNA using a genome-wide…
View details →DOI: 10.1016/j.celrep.2024.114799 Negative / Null Result ReportMedicine
Pham YT, Nguyen BN, Nguyen TG et al. · 2026 · Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
Background Iron is one of the essential elements for human life. Prior studies provided inconclusive results about the association between dietary iron intake and gastric cancer risk. We determined the association between dietary iron…
View details →DOI: 10.1158/1055-9965.epi-25-1167 Negative / Null Result Report
Santiago-Torner C · 2024 · Preprint
Creativity in virtual work environments and its influence on emotional exhaustion is a relationship with inconclusive results. Furthermore, autonomy, when it loses its original purpose of acting as a job resource, takes on an ambiguous…
View details →DOI: 10.20944/preprints202407.0008.v1 Negative / Null Result ReportMedicine
Pardi C, Hellberg Å, Isakson P · 2024 · Blood transfusion = Trasfusione del sangue
Background The Rh blood group system is highly complex, polymorphic, and immunogenic. The presence of RHD gene variants in RhD negative pregnant women is a challenge in fetal RHD genotyping as it may influence the antenatal management of…
View details →DOI: 10.2450/bloodtransfus.741 Negative / Null Result ReportOpen accessMedicine
Boyarchuk O, Volianska L, Smashna O et al. · 2024 · Frontiers in genetics
Introduction Developmental delay (DD) in children is often caused by genetic abnormalities, which are challenging to diagnose due to the vast genetic variability. Methods This study presents a detailed analysis of whole-exome sequencing…
View details →DOI: 10.3389/fgene.2024.1505254 Negative / Null Result ReportOpen accessMedicine
Gutowska A, Bohdan M, Radtke-Łysek A et al. · 2026 · The American journal of case reports
BACKGROUND Cardiac myxomas are the most common primary cardiac tumors in the general population but are exceedingly rare in orthotopic heart transplant recipients. Fewer than 5 cases have been reported. Their pathogenesis in the setting of…
View details →DOI: 10.12659/ajcr.949982 Negative / Null Result ReportMedicine
Mattke S, Jun H, Hanson M et al. · 2024 · The journal of prevention of Alzheimer's disease
Introduction As treatments for secondary prevention of Alzheimer's disease (AD) are being studied, concerns about their value for money have appeared. We estimate cost-effectiveness of a hypothetical screening and prevention program.…
View details →DOI: 10.14283/jpad.2024.23 Negative / Null Result ReportMedicine
Harjunen L, Östman K, Pohl P · 2025 · Disability and rehabilitation
Purpose Ronnie Gardiner Method (RGM) is a music-based movement therapy that has long been used within rehabilitation. There is a need to (1) identify the scope of the use of RGM, (2) explore potential benefits, (3) examine qualitative…
View details →DOI: 10.1080/09638288.2024.2392037 Negative / Null Result ReportOpen accessMedicine
Klim L, Michalik M, Cichocka-Jarosz E et al. · 2025 · Nutrients
Background: Diagnosing food allergy (FA) typically involves a detailed clinical history and confirmation of allergen-specific IgE. Oral food challenges (OFCs) remain the gold standard in FA diagnosis. This study aimed to present our…
View details →DOI: 10.3390/nu17172769 Negative / Null Result ReportOpen accessMedicine
Jain M, Pal DK, Narayan Sahu R et al. · 2025 · World journal of orthopedics
Background Sagittal spinopelvic alignment (SSA) is essential for preserving a stable and effective upright posture and locomotion. Although alterations in the SSA are recognised to induce compensatory modifications in the pelvis, hips, and…
View details →DOI: 10.5312/wjo.v16.i7.107869 Negative / Null Result ReportOpen accessMedicine
Buchta C, Aberle SW, Görzer I et al. · 2024 · Wiener klinische Wochenschrift
Background External quality assessment (EQA) schemes provide objective feedback to participating laboratories about the performance of their analytical systems and information about overall regional analytical performance. The EQAs are…
View details →DOI: 10.1007/s00508-024-02353-1 Negative / Null Result ReportOpen accessMedicine
Katz A, Kreiner M, Korain Blank P et al. · 2025 · Journal of pediatric orthopedics
Background Clubfoot is a congenital condition affecting 1 to 2 per 1000 live births, with treatment primarily involving the Ponseti method and/or surgical intervention. It is important to ascertain whether children affected by clubfoot are…
View details →DOI: 10.1097/bpo.0000000000003049 Negative / Null Result ReportMedicine
Zeinhom MG, Elsayed Khalil MF, Omar Youssif TY et al. · 2025 · Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia
Although topiramate and valproate are antiseizure medications that have many contraindications and could produce many side effects, they are still used as migraine preventive therapy in middle- and low-income countries. Several trials…
View details →DOI: 10.1016/j.jocn.2025.111156 Negative / Null Result ReportOpen accessMedicine
La Jeon Y, Lee SG, Lee EH et al. · 2023 · Diagnostic microbiology and infectious disease
We investigated whether inconclusive results could be interpreted differently depending on the situation. First, data from retesting of the initial samples from subjects without a confirmed COVID-19 history were analyzed. And by analyzing…
View details →DOI: 10.1016/j.diagmicrobio.2022.115888 Negative / Null Result ReportOpen accessMedicine
Palomino-Padilla S, Caceres-Cardenas G, Calderon R et al. · 2024 · Frontiers in public health
Objectives The COVID-19 pandemic caused a global shortage of nasopharyngeal (NP) swabs, required for RT-PCR testing. Canadian manufacturers were contacted to share NP swab innovations. The primary objective was to determine whether novel…
View details →DOI: 10.3389/fpubh.2024.1344295 Negative / Null Result ReportMedicine
Wang L, Xue C, Zhu B et al. · 2025 · Peritoneal dialysis international : journal of the International Society for Peritoneal Dialysis
Background/objective Data in terms of how dynamic changes of muscle mass and function affect mortality in end-stage kidney disease (ESKD) patients undergoing dialysis have led to inconclusive results. The main goal of this research was to…
View details →DOI: 10.1177/08968608241288958 Negative / Null Result Report
Bevilacqua C, Boscarato V, Pieroni G et al. · 2024 · Preprint
Background: developmental dysplasia of the hip (DDH) is a condition characterized by abnormal hip development in infancy. Early diagnosis allows for effective treatment, while late presentation often necessitates complex surgical…
View details →DOI: 10.20944/preprints202406.0151.v1 