Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications

BackgroundPhotodynamic therapy (PDT) can target cancers, while causing little damage to surrounding healthy tissuesObjectiveTo systematically evaluate the efficacy, safety, and clinical applications of PDT across cancer types.MethodsPubMed, EMBASE, Cochrane Library, and Web of Science were searched...

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Main Authors: Hanhan Chen, Honglin Li, Hui-Jie Li, Zhen Zhang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-08-01
Series:Frontiers in Oncology
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Online Access:https://www.frontiersin.org/articles/10.3389/fonc.2025.1528314/full
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author Hanhan Chen
Honglin Li
Hui-Jie Li
Zhen Zhang
author_facet Hanhan Chen
Honglin Li
Hui-Jie Li
Zhen Zhang
author_sort Hanhan Chen
collection DOAJ
description BackgroundPhotodynamic therapy (PDT) can target cancers, while causing little damage to surrounding healthy tissuesObjectiveTo systematically evaluate the efficacy, safety, and clinical applications of PDT across cancer types.MethodsPubMed, EMBASE, Cochrane Library, and Web of Science were searched to April 7, 2024 for systematic reviews and meta-analyses of PDT in patients with cancer. Quality assessment was performed using Assessment of Multiple Systematic Reviews 2, overlapping meta-analyses were handled using Corrected Covered Area, and data re-synthesized using a random-effects model.ResultsEighteen publications met the inclusion criteria. There is weak evidence that PDT combined with biliary stenting improves overall survival (OS) relative to stenting alone (hazard ratio (HR) 0.49, 95% confidence interval (CI) 0.33–0.73), while PDT with chemotherapy improved OS (HR 0.36, 95% CI 0.15–0.87), without increasing adverse events. Weak evidence indicated lower clearance and complete response rates and higher recurrence rates of non-melanoma skin cancers, particularly basal cell carcinoma (BCC), after PDT than following surgery. In squamous cell carcinoma (SCC), complete response rates (relative risk 2.75; 95% CI 2.19–3.45) were higher for laser-assisted than conventional PDT; PDT provided better cosmetic outcomes than other therapies. Single-arm meta-analyses demonstrated some efficacy of PDT for treating cutaneous metastatic SCC, oral SCC, prostate cancer, and bladder cancer.ConclusionPDT shows potential benefits in several cancers, especially for non-melanoma skin cancer and unresectable cholangiocarcinoma. While newer PDT strategies may improve outcomes, more high-quality trials are needed to confirm its role across cancer types.Systematic review registrationhttps://www.crd.york.ac.uk/PROSPERO/view/CRD42024538243, identifier CRD42024538243.
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spelling doaj-art-d093adc684a64a46a8aa2d96e2448cf22025-08-20T03:01:41ZengFrontiers Media S.A.Frontiers in Oncology2234-943X2025-08-011510.3389/fonc.2025.15283141528314Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applicationsHanhan Chen0Honglin Li1Hui-Jie Li2Zhen Zhang3Department of Breast Surgery, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong, ChinaTraditional Chinese Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, ChinaDepartment of Oncology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong, ChinaDepartment of Radiation Oncology, The Third Affiliated Hospital of Shandong First Medical University Affiliated Hospital of Shandong Academy of Medical Sciences, Jinan, Shandong, ChinaBackgroundPhotodynamic therapy (PDT) can target cancers, while causing little damage to surrounding healthy tissuesObjectiveTo systematically evaluate the efficacy, safety, and clinical applications of PDT across cancer types.MethodsPubMed, EMBASE, Cochrane Library, and Web of Science were searched to April 7, 2024 for systematic reviews and meta-analyses of PDT in patients with cancer. Quality assessment was performed using Assessment of Multiple Systematic Reviews 2, overlapping meta-analyses were handled using Corrected Covered Area, and data re-synthesized using a random-effects model.ResultsEighteen publications met the inclusion criteria. There is weak evidence that PDT combined with biliary stenting improves overall survival (OS) relative to stenting alone (hazard ratio (HR) 0.49, 95% confidence interval (CI) 0.33–0.73), while PDT with chemotherapy improved OS (HR 0.36, 95% CI 0.15–0.87), without increasing adverse events. Weak evidence indicated lower clearance and complete response rates and higher recurrence rates of non-melanoma skin cancers, particularly basal cell carcinoma (BCC), after PDT than following surgery. In squamous cell carcinoma (SCC), complete response rates (relative risk 2.75; 95% CI 2.19–3.45) were higher for laser-assisted than conventional PDT; PDT provided better cosmetic outcomes than other therapies. Single-arm meta-analyses demonstrated some efficacy of PDT for treating cutaneous metastatic SCC, oral SCC, prostate cancer, and bladder cancer.ConclusionPDT shows potential benefits in several cancers, especially for non-melanoma skin cancer and unresectable cholangiocarcinoma. While newer PDT strategies may improve outcomes, more high-quality trials are needed to confirm its role across cancer types.Systematic review registrationhttps://www.crd.york.ac.uk/PROSPERO/view/CRD42024538243, identifier CRD42024538243.https://www.frontiersin.org/articles/10.3389/fonc.2025.1528314/fullphotodynamic therapycancermeta-analysisumbrella reviewphotosensitizer
spellingShingle Hanhan Chen
Honglin Li
Hui-Jie Li
Zhen Zhang
Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications
Frontiers in Oncology
photodynamic therapy
cancer
meta-analysis
umbrella review
photosensitizer
title Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications
title_full Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications
title_fullStr Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications
title_full_unstemmed Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications
title_short Umbrella review of photodynamic therapy for cancer: efficacy, safety, and clinical applications
title_sort umbrella review of photodynamic therapy for cancer efficacy safety and clinical applications
topic photodynamic therapy
cancer
meta-analysis
umbrella review
photosensitizer
url https://www.frontiersin.org/articles/10.3389/fonc.2025.1528314/full
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AT huijieli umbrellareviewofphotodynamictherapyforcancerefficacysafetyandclinicalapplications
AT zhenzhang umbrellareviewofphotodynamictherapyforcancerefficacysafetyandclinicalapplications