Case Report: Acute Myocarditis Due to PD-L1 Inhibitor Durvalumab Monotherapy in a Patient With Lung Squamous Cell Carcinoma

Case Report: Acute Myocarditis Due to PD-L1 Inhibitor Durvalumab Monotherapy in a Patient With Lung Squamous Cell Carcinoma

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BackgroundDurvalumab, as a PD-L1 inhibitor, is commonly used for the treatment of various cancers.Adverse events associated with the therapy include hepatitis, nephritis, dermatitis, and myocarditis.Especially, myocarditis as an adverse event after PD-L1 inhibitor therapy is characterized for its low incidence and high mortality.Case SummaryHere we present a rare case of a Ankle Boots 67-year-old male with lung squamous cell carcinoma complicated with empyema who experienced myocarditis after only PD-L1 inhibitor durvalumab monotherapy.

He presented with markedly decrease left ventricular ejection fraction, elevated Natriuretic peptide BNP, Troponin T, Troponin I, ESR, Floor - Floorball CRP and interleukin-6.The electrocardiogram showed sinus tachycardia, low voltage of limb leads, T wave inversion in anterior waves and V1-V3 QS type.Myocardial injury occurred in a short period and quickly returned to normal after glucocorticoids therapy.ConclusionThis case report is of clinical value for the treatment of PD-L1 related myocarditis.