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Multiplexed Immunofluorescence Analysis and Quantification of Intratumoral PD-1+ Tim-3+ CD8+ T Cells
Published on: February 8, 2018
Exploring resistance to immune checkpoint inhibitors and targeted therapies in melanoma
Anum Jalil1, Melissa M Donate2, Jane Mattei3
1Department of Medicine, UT Health Science Center San Antonio, San Antonio, TA 78229, USA.
Abstract:
Melanoma is the most aggressive form of skin cancer, characterized by a poor prognosis, and its incidence has risen rapidly over the past 30 years. Recent therapies, notably immunotherapy and targeted therapy, have significantly improved the outcome of patients with metastatic melanoma. Previously dismal five-year survival rates of below 5% have shifted to over 50% of patients surviving the five-year mark, marking a significant shift in the landscape of melanoma treatment and survival. Unfortunately, about 50% of patients either do not respond to therapy or experience early or late relapses following an initial response. The underlying mechanisms for primary and secondary resistance to targeted therapies or immunotherapy and relapse patterns remain not fully identified. However, several molecular pathways and genetic factors have been associated with melanoma resistance to these treatments. Understanding these mechanisms paves the way for creating novel treatments that can address resistance and ultimately enhance patient outcomes in melanoma. This review explores the mechanisms behind immunotherapy and targeted therapy resistance in melanoma patients. Additionally, it describes the treatment strategies to overcome resistance, which have improved patients' outcomes in clinical trials and practice.
Insights
Melanoma treatments like immunotherapy have improved survival, but resistance remains a challenge. Understanding resistance mechanisms is key to developing new therapies for better patient outcomes in skin cancer.
Area of Science:
- Oncology
- Dermatology
- Cancer Research
Background:
- Melanoma incidence has increased, with metastatic melanoma historically having a poor prognosis.
- Recent advances in immunotherapy and targeted therapy have significantly improved survival rates for metastatic melanoma patients.
- Despite treatment advances, approximately 50% of patients exhibit primary or acquired resistance, leading to relapse.
Purpose of the Study:
- To review the molecular mechanisms underlying resistance to immunotherapy and targeted therapy in melanoma.
- To explore novel treatment strategies aimed at overcoming melanoma resistance.
- To enhance understanding of relapse patterns and resistance factors in melanoma treatment.
Main Methods:
- Literature review of recent clinical trials and research studies on melanoma treatment resistance.
- Analysis of molecular pathways and genetic factors implicated in melanoma therapeutic resistance.
- Synthesis of current and emerging treatment strategies to combat melanoma resistance.
Main Results:
- Immunotherapy and targeted therapy have transformed melanoma survival rates, exceeding 50% five-year survival.
- Mechanisms of primary and secondary resistance to these therapies are not fully elucidated but involve specific molecular pathways.
- Several genetic factors and molecular pathways are associated with treatment resistance in melanoma.
- Emerging strategies show promise in clinical trials for overcoming resistance and improving patient outcomes.
Conclusions:
- While current therapies have improved melanoma survival, resistance remains a significant clinical challenge.
- Further research into the molecular underpinnings of melanoma resistance is crucial for developing more effective treatments.
- Novel therapeutic strategies targeting resistance mechanisms are essential to further improve outcomes for melanoma patients.
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