Key result
High-sensitive troponin I increased and fell more rapidly and was more heart-specific than troponin T for diagnosing immune checkpoint inhibitor-related myocarditis.
Why the study?
Does hs-TnI provide better diagnostic and monitoring value than hs-TnT in patients with immune checkpoint inhibitor-related myocarditis?
Case Report (n=1)
Does hs-TnI provide better diagnostic and monitoring value than hs-TnT in patients with immune checkpoint inhibitor-related myocarditis?
Answers are grounded in this paper and cite their sources.
hs-TnI may be more heart-specific and responsive than hs-TnT for diagnosing and monitoring immune checkpoint inhibitor-related myocarditis.
A 54-year old patient with metastatic melanoma presented with asymptomatic myositis and myocarditis after combined immune checkpoint inhibitors (ICI) therapy (anti-programmed cell death receptor-1, anti-lymphocyte activating gene-3, and anti-indoleamine 2,3-dioxygenase-1). The diagnosis was based on the typical time window after ICI, recurrence upon re-challenge, elevations of CK, high-sensitive troponin T (hs-TnT) and I (hs-TnI), mild NT-proBNP increase, and positive magnetic resonance imaging criteria. Notably, hsTnI was found to more rapidly increase and fall and to be more heart-specific than TnT in the context of ICI-related myocarditis. This led to ICI therapy withdrawal and switch to a less effective systemic therapy. This case report highlights the differential value of hs-TnT and hs-TnI for diagnosis and monitoring of ICI-related myositis and myocarditis.
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Rossi et al. (2023) conducted a case report in Immune Checkpoint Inhibitor-Related Myocarditis and Myositis (n=1). High-sensitive troponin I (hs-TnI) versus high-sensitive troponin T (hs-TnT) was evaluated on Diagnosis and monitoring of ICI-related myositis and myocarditis. High-sensitive troponin I increased and fell more rapidly and was more heart-specific than troponin T for diagnosing immune checkpoint inhibitor-related myocarditis.
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