The intra-tumoral stroma in patients with breast cancer increases with age
Vangangelt, K.M.H.; Kramer, C.J.H.; Bastiaannet, E.; Putter, H.; Cohen, D.; Van Pelt, G.W.; Rakha, E.A.; Green, A.R.; Tollenaar, R.A.E.M.; Mesker, W.E.
G.W. Van Pelt
The tumor microenvironment in older patients is subject to changes. The tumor-stroma ratio (TSR) was evaluated in order to estimate the amount of intra-tumoral stroma and to evaluate the prognostic value of the TSR in older patients with breast cancer (≥70 years).
Two retrospective cohorts, the FOCUS study (N = 619) and the Nottingham Breast Cancer series (N = 1793), were used for assessment of the TSR on hematoxylin and eosin stained tissue slides.
The intra-tumoral stroma increases with age in the FOCUS study and the Nottingham Breast Cancer series (B 0.031, 95% CI 0.006-0.057, P = 0.016 and B 0.034, 95% CI 0.015-0.054, P ≤ 0.001, respectively). Fifty-one percent of the patients from the Nottingham Breast Cancer series ≤40 years had a stroma-high tumor compared to 73% of the patients of ≥90 years from the FOCUS study. The TSR did not validate as an independent prognostic parameter in patients ≥70 years.
The intra-tumoral stroma increases with age. This might be the result of an activated tumor microenvironment. The TSR did not validate as an independent prognostic parameter in patients ≥70 years in contrast to young women with breast cancer as published previously.
|Journal Article Type||Article|
|Publication Date||Sep 18, 2019|
|Journal||Breast Cancer Research and Treatment|
|Peer Reviewed||Peer Reviewed|
|Institution Citation||Vangangelt, K., Kramer, C., Bastiaannet, E., Putter, H., Cohen, D., Van Pelt, G., …Mesker, W. (2019). The intra-tumoral stroma in patients with breast cancer increases with age. Breast Cancer Research and Treatment, https://doi.org/10.1007/s10549-019-05422-6|