1
|
Köbel M, Kang EY, Lee S, Terzic T, Karnezis AN, Ghatage P, Woo L, Lee CH, Meagher NS, Ramus SJ, Gorringe KL. Infiltrative pattern of invasion is independently associated with shorter survival and desmoplastic stroma markers FAP and THBS2 in mucinous ovarian carcinoma. Histopathology 2024; 84:1095-1110. [PMID: 38155475 DOI: 10.1111/his.15128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/30/2023]
Abstract
AIMS Mucinous ovarian carcinoma (MOC) is a rare ovarian cancer histotype with generally good prognosis when diagnosed at an early stage. However, MOC with the infiltrative pattern of invasion has a worse prognosis, although to date studies have not been large enough to control for covariables. Data on reproducibility of classifying the invasion pattern are limited, as are molecular correlates for infiltrative invasion. We hypothesized that the invasion pattern would be associated with an aberrant tumour microenvironment. METHODS AND RESULTS Four subspecialty pathologists assessed interobserver reproducibility of the pattern of invasion in 134 MOC. Immunohistochemistry on fibroblast activation protein (FAP) and THBS2 was performed on 98 cases. Association with survival was tested using Cox regression. The average interobserver agreement for the infiltrative pattern was moderate (kappa 0.60, agreement 86.3%). After reproducibility review, 24/134 MOC (18%) were determined to have the infiltrative pattern and this was associated with a higher risk of death, independent of FIGO stage, grade, and patient age in a time-dependent manner (hazard ratio [HR] = 10.2, 95% confidence interval [CI] 3.0-34.5). High stromal expression of FAP and THBS2 was more common in infiltrative MOC (FAP: 60%, THBS2: 58%, both P < 0.001) and associated with survival (multivariate HR for FAP: 1.5 [95% CI 1.1-2.1] and THBS2: 1.91 [95% CI 1.1-3.2]). CONCLUSIONS The pattern of invasion should be included in reporting for MOC due to the strong prognostic implications. We highlight the histological features that should be considered to improve reproducibility. FAP and THBS2 are associated with infiltrative invasion in MOC.
Collapse
Affiliation(s)
- Martin Köbel
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Centre, Calgary, AB, Canada
| | - Eun-Young Kang
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Centre, Calgary, AB, Canada
| | - Sandra Lee
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Centre, Calgary, AB, Canada
| | - Tatjana Terzic
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Centre, Calgary, AB, Canada
| | - Antony N Karnezis
- Department of Pathology and Laboratory Medicine, University of California Davis, Sacramento, CA, USA
| | - Prafull Ghatage
- Department of Oncology, Division of Gynecologic Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Lawrence Woo
- Department of Oncology, Division of Gynecologic Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Cheng-Han Lee
- Department of Pathology and Laboratory Medicine, University of Alberta, Edmonton, AB, Canada
| | - Nicola S Meagher
- School of Clinical Medicine, Faculty of Medicine and Health, University of NSW Sydney, Sydney, NSW, Australia
- The Daffodil Centre, The University of Sydney, a Joint Venture with Cancer Council NSW, Sydney, NSW, Australia
| | - Susan J Ramus
- School of Clinical Medicine, Faculty of Medicine and Health, University of NSW Sydney, Sydney, NSW, Australia
- Adult Cancer Program, Lowy Cancer Research Centre, University of NSW Sydney, Sydney, NSW, Australia
| | - Kylie L Gorringe
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Vic., Australia
- Peter MacCallum Cancer Centre, Melbourne, Vic., Australia
| |
Collapse
|