Trial reportPloS one2019
Detection of anti-Trypanosoma cruzi antibodies by chimeric antigens in chronic Chagas disease-individuals from endemic South American countries.
Trial report in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
27 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Rapid diagnostic tests and ELISA for diagnosing chronic Chagas disease: Systematic revision and meta-analysis.PLoS neglected tropical diseases · 2022Pooled it
- Technological advances in the serological diagnosis of Chagas disease in dogs and cats: a systematic review.Parasites & vectors · 2022Pooled it
- Double-antigen sandwich ELISA based on chimeric antigens for detection of antibodies to Trypanosoma cruzi in human sera - A phase II study.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Article
- Assessment of the Performance of Indirect Immunofluorescence Assay for Chagas Disease in Dogs Using a Reference Panel of Four Chimeric Proteins.Veterinary medicine and science · 2026Article
- Diagnostic performance of the TR Chagas Bio-Manguinhos rapid test for detecting anti-Trypanosoma cruzi IgG in human samples from three Southern Cone countries.PLoS neglected tropical diseases · 2026Article
- Standardization of Serodiagnostic Methods for Trypanosoma cruzi.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Evaluation of four chimeric Trypanosoma cruzi recombinant antigens for serological diagnosis of chronic Chagas disease in dogs: a phase II study.Parasites & vectors · 2025Article
- Diagnostic Performance of Chimeric Recombinant Antigens of Trypanosoma cruzi for Identifying Chagas Disease in Samples From Rio Grande do Sul.Tropical medicine & international health : TM & IH · 2025Article
- Comparison of Four Chimeric Antigens and Commercial Serological Assays for the Diagnosis of Trypanosoma cruzi Infection.The American journal of tropical medicine and hygiene · 2025Article
- Evaluation of chimeric recombinant antigens for the serodiagnosis of Trypanosoma cruzi in dogs: a promising tool for Chagas disease surveillance.Parasites & vectors · 2024Article
- IgG Isotypes Targeting a Recombinant Chimeric Protein of Trypanosoma cruzi in Different Clinical Presentations of Chronic Chagas Disease.The American journal of tropical medicine and hygiene · 2024Article
- Recombinant proteins as promising antigens applied to the immunodiagnosis of Chagas disease: a scoping review.Frontiers in microbiology · 2024Article
- Epitope Mapping of BmpA and BBK32ACS infectious diseases · 2023Article
- Seroepidemiological Survey of Chronic Chagas Disease in a Rural Community in Southern Bahia, Brazil, Using Recombinant Chimeric Antigens.Pathogens (Basel, Switzerland) · 2023Article
- Antibody Cross-Reactivity in Serodiagnosis of Lyme Disease.Antibodies (Basel, Switzerland) · 2023Review
- Use of sera cell free DNA (cfDNA) and exovesicle-DNA for the molecular diagnosis of chronic Chagas disease.PloS one · 2023Article
- A multicenter comparative study of the performance of four rapid immunochromatographic tests for the detection of anti-Frontiers in medicine · 2023Article
- Western blot using Trypanosoma cruzi chimeric recombinant proteins for the serodiagnosis of chronic Chagas disease: A proof-of-concept study.PLoS neglected tropical diseases · 2022Article
- Double-antigen sandwich ELISA based on chimeric antigens for detection of antibodies to Trypanosoma cruzi in human sera.PLoS neglected tropical diseases · 2022Article
- Chagas Immunochromatographic Rapid Test in the Serological Diagnosis ofFrontiers in cellular and infection microbiology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLaboratory diagnosis of chronic Chagas disease is a troubling factor due to lack of reference tests. The WHO suggests the use of two distinct commercial serological tests in parallel. The performance of commercial immunoassays might fluctuate depending on the antigenic matrices and the local strains of T. cruzi in different geographical settings. The use of antigenic matrices based on chimeric proteins can solve these limitations. Here, we evaluated the diagnostic performance of two chimeric T. cruzi antigens (IBMP-8.1 and -8.4) to diagnose chronic Chagas disease in individuals from endemic South American countries. METHODOLOGY/PRINCIPAL
findingsIBMP-8.1 and IBMP-8.4 chimeric antigens were expressed as soluble proteins in E. coli and purified using chromatography methods. Reactivity of IBMP-8.1 and IBMP-8.4 was assessed using an in-house ELISA with sera from 122 non-infected and 215 T. cruzi-infected individuals from Argentina, Bolivia, and Paraguay. Cut-off values were based on ROC curves and performance parameters were determined using a dichotomous approach. Area under the curve values were > 99.7% for both IBMP-8.1 and IBMP-8.4 antigens. IgG levels in T. cruzi-positive and negative samples were higher for IBMP-8.4 than IBMP-8.1. Both IBMP-8.1 and -8.4 were 100% specific, while IBMP-8.4 were 100% sensitive compared to IBMP-8.1 (95.3%). Admitting RI values of 1.0 ± 0.10 as the inconclusive interval, 6.2% of the samples tested using IBMP-8.1 and 2.1% using IBMP-8.4 fell inside the grey zone. Based on accuracy and diagnostic odds ratio values, IBMP-8.4 presented the best performance. Differences in sensitivity and IgG levels among the samples from Argentina, Bolivia, and Paraguay were not significant. CONCLUSIONS/SIGNIFICANCE: Our findings showed a notable performance of IBMP-8.1 and -8.4 chimeric antigens in diagnosing chronic Chagas disease in individuals from endemic South American countries, confirming our hypothesis that these antigens could be used in geographical areas where distinct T. cruzi DTUs occur.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.