RNA analysis of tape strips to rule out melanoma in lesions clinically assessed as cutaneous malignant melanoma: A diagnostic study
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Background: Distinguishing cutaneous malignant melanoma (CMM) from nevi can be clinically challenging. Suspicious lesions are therefore excised, resulting in many benign lesions being removed surgically to find 1 CMM. It has been proposed to use tape strip derived ribonucleic acid (RNA) to distinguish CMM from nevi. Objective: To develop this technique further and validate if RNA profiles can rule out CMM in clinically suspicious lesions with 100% sensitivity. Methods: Before surgical excision, 200 lesions clinically assessed as CMM were tape stripped. Expression levels of 11 genes on the tapes were investigated by RNA measurement and used in a rule-out test. Results: Histopathology showed that 73 CMMs and 127 non-CMMs were included. Our test correctly identified all CMMs (100% sensitivity) based on the expression levels of 2 oncogenes, PRAME and KIT, relative to a housekeeping gene. Patient age and sample storage time were also significant. Simultaneously, our test correctly excluded CMM in 32% of non-CMM lesions (32% specificity). Limitations: Our sample contained a very high proportion of CMMs, perhaps due to inclusion during COVID-19 shutdown. Validation in a separate trial must be performed. Conclusion: Our results demonstrate that the technique can reduce removal of benign lesions by one-third without overlooking any CMMs.
Originalsprog | Engelsk |
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Tidsskrift | Journal of the American Academy of Dermatology |
Vol/bind | 89 |
Udgave nummer | 3 |
Sider (fra-til) | 537-543 |
ISSN | 0190-9622 |
DOI | |
Status | Udgivet - 2023 |
Bibliografisk note
Funding Information:
Funding sources: This work was funded by M.L. Jørgensen og Gunnar Hansens Fond , Denmark. The funder had no additional role in the study.
Publisher Copyright:
© 2023 American Academy of Dermatology, Inc.
ID: 357277703