Abstract
Purpose
To evaluate the effectiveness of cemiplimab, a Programmed-cell-death-1(PD-1) protein inhibitor, for the treatment of cutaneous periocular-locally-advanced squamous-cell-carcinoma (POLA-SCC) with orbital-invasion.
Methods
Multicentre real-world retrospective study. Demographic and clinical data were collected and analysed for patients with biopsy-proven POLA-SCC(AJCC-T4) with orbital-invasion who were treated with cemiplimab at one of four tertiary medical centres in 2019–2022.
Results
The cohort included 13 patients, 8 males and 5 females, of median age 76 years (IQR65–86). The median duration of treatment was 5.0months (IQR3.5–10.5) and the median follow-up time, 15.0 months (IQR10.5–30). The overall response rate was 69.2%. Complete response was documented in seven patients (53.8%), partial response in two (15.4%), stable disease in one (7.7%), and progressive disease in two (15.4%); in one patient (7.7%), response was not evaluable. Six complete responders (46.1% of the cohort) received no further treatment and did not have a recurrence during an average follow-up of 6.14 (±6.9) months from treatment cessation. None of the patients underwent orbital-exenteration. The majority of adverse events were mild (grade-1), except for a moderate increase in creatinine level (grade-2), severe bullous dermatitis (grade-3), and myocarditis (grade-5) in one patient each. Four patients (30.7%) died during the follow-up period, all of whom had an Eastern-Cooperative-Oncology-Group score of 4 at presentation.
Conclusions
To our knowledge, this is the largest study to date on cemiplimab therapy for cutaneous POLA-SCC with orbital-invasion. Treatment was shown to be effective, with an overall response rate of 69.2%. Cemiplimab holds promise for the treatment of patients with tumours invading the orbit as it may alleviate the need for orbital exenteration.
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Data availability
The data that support the findings of this study are not openly available due to the hospital’s patient privacy policy. The patient shown in Supplementary Fig. 1 has provided written consent for their image to be used in published media.
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AG and AT acquired the data and drafted the manuscript. AT and MB-I analysed the data and aided in interpreting the results. YC, GM, NK, AP and GBS aided in data acquisition. GBS and IY designed the current study and revised the manuscript. All authors read and approved the final manuscript.
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Tiosano, A., Ben-Ishai, M., Cnaany, Y. et al. Primary cemiplimab treatment for orbital squamous cell carcinoma is effective and may alleviate the need for orbital exenteration. Eye (2023). https://doi.org/10.1038/s41433-022-02358-y
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DOI: https://doi.org/10.1038/s41433-022-02358-y