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Authors: Stege, Henner
Bradfish, F.
Fleischer, Maria Isabel
Mohr, Peter
Ugurel, Selma
Terheyden, P.
Thiem, A.
Kiecker, Felix
Leiter, U.
Becker, Jürgen C.
Grabbe, Stephan
Loquai, Carmen
Title: Retrospective multicenter analysis of the outcome of a re-induction with immune checkpoint inhibitors in advanced Merkel cell carcinoma
Online publication date: 11-May-2021
Language: english
Abstract: Significant progress has been made in the treatment of advanced Merkel cell carcinoma (MCC) by establishing immune checkpoint inhibitors (ICI). Tumor progression, durable response, or adverse events may lead to ICI discontinuation in MCC patients. If in these patients tumor progression occurs, the question remains if re-induction with ICI achieves renewed tumor response. This retrospective multicenter study evaluated patients in with re-induction of anti-PD-1/anti-PD-L1 therapy for advanced MCC. Clinical data were extracted at treatment initiation, tumor response, treatment cessation, and subsequent tumor response to re-induction. Eight patients from seven centers (mean age 67.8 years) were included. The median duration of initial therapy with anti-PD-1/anti-PD-L1 was 9.6 months (2–21 months). Two patients achieved complete response (CR), four patients partial response (PR), one patient stable disease (SD), while in one patient progressive disease (PD) occurred as best overall response (BOR) to ICI. Reason for discontinuation of ICI was PD in three patients and severe adverse events in five patients. Following a median anti-PD-1/anti-PD-L1 therapy-free interval of 9.5 months (3–18 months), re-induction with ICI therapy was initiated. Five of eight patients (62.5%) achieved an objective response upon re-induction, while in three patients, no response could be observed. Notably, adverse events, which had led to the discontinuation of the first ICI treatment line, were not observed upon re-induction. The initial response to immune checkpoint inhibitors seems to be an important marker for successful re-induction. Interestingly, adverse events leading to treatment discontinuation were not observed during re-induction.
DDC: 610 Medizin
610 Medical sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 04 Medizin
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY
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Journal: SN comprehensive clinical medicine
Pages or article number: 2202
Publisher: Springer International Publishing
Publisher place: Cham
Issue date: 2020
ISSN: 2523-8973
Publisher URL:
Publisher DOI: 10.1007/s42399-020-00488-6
Appears in collections:JGU-Publikationen

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