SynthesisBlood2025
Rapid ADAMTS13 activity assays for thrombotic thrombocytopenic purpura: a systematic review and meta-analysis.
Synthesis in Blood, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.
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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.
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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.
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Who cites it
9 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Diagnosis and monitoring of thrombotic thrombocytopenic purpura: Guidance for laboratories from the British Society for Haematology.British journal of haematology · 2026Guideline
- Advances in rapid ADAMTS13 testing for thrombotic thrombocytopenic purpura: a systematic review of diagnostic assays and the role of clinical probability tools.Frontiers in medicine · 2026Pooled it
- Analytical validation and harmonization of activity-based protease assays: requirements for clinical translation.Analytical and bioanalytical chemistry · 2026Review
- A rapid ADAMTS13 activity assay using a portable readout device.Blood vessels, thrombosis & hemostasis · 2026Article
- Pregnancy-Associated Thrombotic Thrombocytopenic Purpura: Diagnostic Pitfalls, Therapeutic Strategies, and Emerging Paradigms.Biomedicines · 2026Review
- Case Report: Albumin combined with plasma exchange in the treatment of refractory thrombotic thrombocytopenic purpura.Frontiers in medicine · 2026Article
- The landscape of ADAMTS13-related tests in thrombotic thrombocytopenic purpura: a review.Frontiers in medicine · 2026Review
- Addition of ADAMTS13 testing to cryptogenic stroke evaluation: index case and single-center screening initial experience.Blood advances · 2025Article
- ADAMTS13 in Bothrops lanceolatus snakebite envenoming: Crude venom-induced reduction of in vitro enzymatic activity and clinical correlation in snakebite patients.PLoS neglected tropical diseases · 2025Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
abstractThrombotic thrombocytopenic purpura (TTP) is a rare, potentially fatal thrombotic microangiopathy caused by severe ADAMTS13 (a disintegrin and metalloproteinase with thrombospondin motif 13) deficiency. Prompt treatment improves survival; however, reference standard enzyme-linked immunosorbent assay and FRETS-VWF73 ADAMTS13 activity assays have long turnaround times (TATs) that necessitate empiric treatment of many patients who ultimately are found not to have TTP. Rapid assays with analytical TATs <1 hour have recently become available. We conducted a systematic review and meta-analysis of the performance characteristics of rapid assays relative to reference standard assays for ADAMTS13 activity for patients with suspected or confirmed TTP. Nineteen studies representing 3 rapid ADAMTS13 assays and 4207 patient samples were included. The HemosIL AcuStar chemiluminescence immunoassay (CLIA) demonstrated high sensitivity (0.98; 95% confidence interval [CI], 0.94-1.00), specificity (0.99; 95% CI, 0.97-1.00), and positive (PPV) (0.96; 95% CI, 0.90-0.98) and negative predictive values (NPV) (0.99; 95% CI, 0.99-1.00). The Technofluor fluorescence resonance energy transfer (FRET) and Technoscreen assays had sensitivity of 0.93 (95% CI, 0.86-0.96) and 0.98 (95% CI, 0.42-1.00), specificity of 0.98 (95% CI, 0.95-0.99) and 0.87 (95% CI, 0.76-0.94), PPV of 0.97 (95% CI, 0.85-1.00) and 0.71 (95% CI, 0.59-0.80), and NPV of 0.96 (95% CI, 0.93-0.98) and 0.99 (95% CI, 0.72-1.00), respectively. The proportion of discrepant results (relative to reference standard assays) was 0.04 (95% CI, 0.03-0.05) for HemosIL AcuStar, 0.04 (95% CI, 0.02-0.06) for Technofluor FRET, and 0.11 (95% CI, 0.07-0.16) for the Technoscreen assay. With rapid TAT and high sensitivity, the HemosIL AcuStar CLIA seems able to reliably avert empiric plasma exchange, corticosteroids, and caplacizumab in patients without TTP.
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