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Table · dataset · 2026

Data Sheet 1_Clinical characteristics and immunotherapy in Chinese patients with Merkel cell carcinoma: a retrospective analysis.docx

Listed in figshare and Loughborough Research Repository — shown once because both records carry DOI 10.3389/fonc.2026.1948121.s001

Purpose<p>Merkel cell carcinoma (MCC) is a rare but highly aggressive cutaneous malignancy with limited epidemiological and therapeutic data in Asian populations.

Description

While immunotherapy works in Western patients, its efficacy in Chinese MCC patients remains unexplored.</p>Methods<p>We retrospectively analyzed 40 histologically confirmed MCC cases treated at our institution between November 2011 to November 2024. Sixteen patients with complete records underwent detailed analysis of demographics, treatments, and responses.</p>Results<p>The cohort included 25 female and 15 male patients (median age 71 years, range 25-91).

Of the 16 patients with detailed information, 15 (94%) patients underwent extensive resection while 1 did not. Among surgical patients, 1 (7%) patient operative area received postoperative adjuvant radiotherapy, and 2 (13%) had additional lymph node dissection. Immunohistochemical analysis showed that out of 10 evaluable patients, 8 (80%) were MCPyV positive and 3 (30%) were PD-L1 positive.

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Among the patients receiving systemic treatment, four were administered Pembrolizumab at a dose of 200 mg every three weeks. Remarkably, three of these patients (75%) achieved a complete response (CR) by radiographic evaluation, with two of the treated specimens showed no residual malignant cells detected in post-treatment biopsy specimens. The treatment was well-tolerated, with no grade 3 or higher adverse events reported during the observation period.</p>Conclusion<p>This study describes MCC characteristics in Chinese patients, with preliminary indications of female predominance and favorable immunotherapy responses.

The findings highlight the need for standardized treatment approaches.</p>

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Oncology and carcinogenesis 70%
Provenance · 2 source records, 29 field assertions
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