Tumour gene expression signature in primary melanoma predicts long-term outcomes

Research output: Contribution to journalArticle


title = "Tumour gene expression signature in primary melanoma predicts long-term outcomes",
abstract = "Adjuvant systemic therapies are now routinely used following resection of stage III melanoma, however accurate prognostic information is needed to better stratify patients. We use differential expression analyses of primary tumours from 204 RNA-sequenced melanomas within a large adjuvant trial, identifying a 121 metastasis-associated gene signature. This signature strongly associated with progression-free (HR = 1.63, p = 5.24 × 10−5) and overall survival (HR = 1.61, p = 1.67 × 10−4), was validated in 175 regional lymph nodes metastasis as well as two externally ascertained datasets. The machine learning classification models trained using the signature genes performed significantly better in predicting metastases than models trained with clinical covariates (pAUROC = 7.03 × 10−4), or published prognostic signatures (pAUROC < 0.05). The signature score negatively correlated with measures of immune cell infiltration (ρ = −0.75, p < 2.2 × 10−16), with a higher score representing reduced lymphocyte infiltration and a higher 5-year risk of death in stage II melanoma. Our expression signature identifies melanoma patients at higher risk of metastases and warrants further evaluation in adjuvant clinical trials.",
author = "Manik Garg and Couturier, {Dominique Laurent} and J{\'e}r{\'e}mie Nsengimana and Fonseca, {Nuno A.} and Matthew Wongchenko and Yibing Yan and Martin Lauss and J{\"o}nsson, {G{\"o}ran B.} and Julia Newton-Bishop and Christine Parkinson and Middleton, {Mark R.} and Bishop, {D. Timothy} and Sarah McDonald and Nikki Stefanos and John Tadross and Vergara, {Ismael A.} and Serigne Lo and Felicity Newell and Wilmott, {James S.} and Thompson, {John F.} and Long, {Georgina V.} and Scolyer, {Richard A.} and Pippa Corrie and Adams, {David J.} and Alvis Brazma and Roy Rabbie",
year = "2021",
doi = "10.1038/s41467-021-21207-2",
language = "English",
volume = "12",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",