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Temozolomide reconsidered: Real-World evidence in resistant melanoma cases
Jean Henri Maselli-Schoueri1, Erika Martinez1, Erick Lagos1
1Princess Margaret Cancer Centre-Division of Medical Oncology & Hematology-Department of Medicine-Melanoma and Skin Cancer, University of Toronto, Toronto, ON M5G 2M9, Canada.
Abstract:
Immune checkpoint inhibitors have transformed outcomes in melanoma and other aggressive malignancies. However, subsequent lines of therapy remain limited: modest efficacy, lack of publicly funded options, and declining performance status frequently restrict clinicians' choices. In this context, temozolomide has re-emerged as a feasible bridge therapy, with emerging evidence suggesting synergistic activity when used alongside anti-PD-1 agents. Here, we describe two cases of single-agent temozolomide administered after progression on prior systemic therapies, including anti-PD-1 and, in one case, targeted therapy, both demonstrating meaningful clinical responses and great patient tolerability. We also briefly discuss how these observations may support further exploration of temozolomide within modern treatment sequencing strategies.
Insights
Temozolomide shows promise as a subsequent therapy for advanced cancers after immune checkpoint inhibitors fail. Two patients experienced significant clinical responses and good tolerability with single-agent temozolomide treatment.
Area of Science:
- Oncology
- Immunotherapy
- Cancer Treatment
Background:
- Immune checkpoint inhibitors (ICIs) have revolutionized cancer care but subsequent treatment options are limited.
- Limited efficacy, cost, and patient health often restrict choices after ICI failure.
- Temozolomide is being reconsidered as a potential bridge therapy, especially with anti-PD-1 agents.
Purpose of the Study:
- To report two cases of single-agent temozolomide as a subsequent therapy.
- To assess clinical response and tolerability in patients progressing on prior systemic therapies including ICIs.
- To explore the role of temozolomide in modern cancer treatment sequencing.
Main Methods:
- Case report of two patients with advanced malignancies.
- Patients received single-agent temozolomide after disease progression on prior systemic treatments.
- Prior treatments included anti-PD-1 therapy and, in one case, targeted therapy.
Main Results:
- Both patients demonstrated meaningful clinical responses to temozolomide.
- Temozolomide was well-tolerated in both cases.
- These findings suggest potential synergistic activity and tolerability.
Conclusions:
- Single-agent temozolomide can be an effective and tolerable subsequent therapy after progression on ICIs.
- These cases support further investigation of temozolomide in contemporary cancer treatment strategies.
- Temozolomide may offer a viable option when other treatments are exhausted.
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