Cited by 95Cancer Immunotherapy and BiomarkersCutaneous Melanoma Detection and ManagementMedical Imaging Techniques and Applications

Optimizing immune-related tumor response assessment: does reducing the number of lesions impact response assessment in melanoma patients treated with ipilimumab?

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Nishino, Mizuki, Gargano, Maria, Suda, Margaret, Ramaiya, Nikhil H, Hodi, F Stephen·2014·Journal for ImmunoTherapy of Cancer

Abstract

BACKGROUND: Investigate the impact of the reduction of the number of target lesions on immune-related response assessment in advanced melanoma patients treated with ipilimumab. METHOD: Ninety patients (53 males, 37 females; age range: 25-87) with advanced melanoma treated with ipilimumab in two clinical trials were studied. Tumor measurements during trial allowing up to 5 lesions per organ and 10 lesions in total were retrospectively reviewed. A second set of tumor measurements allowing up to 2 lesions per organ and 5 lesions in total was generated. Immune-related response assessments by two measurements were compared. RESULTS: The number of target lesions was significantly reduced when up to 2 per organ and 5 in total lesions were allowed (Wilcoxon P < 0.0001). The immune-related response assessment using reduced number of lesions was highly concordant with assessment using the original number of lesions (Spearman r for the percent change on 1(st)-3(rd) follow-up: 0.860-0.970; κw for best immune-related response: 0.908). Median time-to-progression was 26.9 months (95%CI: 9.1-∞) by both assessments. Interobserver agreement of measurements was high for both assessments, with the concordance correlation coefficient above 0.98. CONCLUSION: Reduction of the number of target lesions did not significantly affect immune-related response assessment or the measurement variability in advanced melanoma patients treated with ipilimumab. Using up to 2 per organ and 5 in total target lesions is proposed to assess immune-related response, while it is important to keep other novel features of immune-related response criteria such as confirmation of progression and inclusion of new lesion measurements.

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Authors
Nishino, M., Gargano, M., Suda, M., Ramaiya, N. H., & Hodi, F. S.
Affiliations
Brigham and Women's Hospital (US)
Corresponding author
Nishino, Mizuki
Venue
Journal for ImmunoTherapy of Cancer
Publisher
BMJ
Published
2014-06-18
Volume
2
Issue
1
Pages
17-17
ISSN
2051-1426 (ISSN-L)
OpenAlex
W2117110700
Cited by
95
References
24
Citations by year
2026: 4 · 2025: 3 · 2024: 2 · 2023: 8 · 2022: 5 · 2021: 8 · 2020: 13 · 2019: 13 · 2018: 11 · 2017: 15 · 2016: 9 · 2015: 3 · 2014: 1
FWCI
4.48
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal for ImmunoTherapy of Cancer (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (1K23CA157631)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Oncology › Cutaneous Melanoma Detection and Management
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
Keywords
ipilimumab, advanced melanoma, tumor response assessment, immune checkpoint inhibitors, interobserver agreement, time to progression

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