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Open AccessCommunication
Int. J. Mol. Sci. 2016, 17(7), 1041; doi:10.3390/ijms17071041

Usefulness of Aquaporin 1 as a Prognostic Marker in a Prospective Cohort of Malignant Mesotheliomas

Department of Anatomical Pathology, Flinders University of South Australia, Bedford Park, South Australia 5042, Australia
Department of Surgical Pathology, SA Pathology at Flinders Medical Centre, Bedford Park, South Australia 5042, Australia
Medical Oncology, Flinders Medical Centre, Bedford Park, South Australia 5042, Australia
Asbestos Diseases Research Institute, Bernie Banton Centre, Concord Repatriation General Hospital, Concord 2139 Sydney, Australia
Author to whom correspondence should be addressed.
Academic Editor: Kenichi Ishibashi
Received: 25 May 2016 / Revised: 21 June 2016 / Accepted: 24 June 2016 / Published: 30 June 2016
(This article belongs to the Special Issue Aquaporin)
View Full-Text   |   Download PDF [347 KB, uploaded 30 June 2016]   |  


(1) Background: Malignant mesothelioma (MM) is an aggressive tumour of the serosal membranes, associated with exposure to asbestos. Survival is generally poor, but prognostication for individual patients is difficult. We recently described Aquaporin 1 (AQP1) as independent prognostic factor in two separate retrospective cohorts of MM patients. Here we assess the usefulness of AQP1 prospectively, and determine the inter-observer agreement in assessing AQP1 scores; (2) Methods: A total of 104 consecutive cases of MM were included. Sufficient tissue for immunohistochemistry was available for 100 cases, and these cases were labelled for AQP1. Labelling was assessed by two pathologists. Complete clinical information and follow up was available for 91 cases; (3) Results: Labelling of ≥50% of tumour cells for AQP indicated improved prognosis in a univariate model (median survival 13 versus 8 months, p = 0.008), but the significance was decreased in a multivariate analysis. Scoring for AQP1 was robust, with an inter-observer kappa value of 0.722, indicating substantial agreement between observers; (4) Conclusion: AQP1 is a useful prognostic marker that can be easily incorporated in existing diagnostic immunohistochemical panels and which can be reliably interpreted by different pathologists. View Full-Text
Keywords: malignant mesothelioma; pleura; peritoneum; Aquaporin 1; asbestos; prognosis malignant mesothelioma; pleura; peritoneum; Aquaporin 1; asbestos; prognosis

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Driml, J.; Pulford, E.; Moffat, D.; Karapetis, C.; Kao, S.; Griggs, K.; Henderson, D.W.; Klebe, S. Usefulness of Aquaporin 1 as a Prognostic Marker in a Prospective Cohort of Malignant Mesotheliomas. Int. J. Mol. Sci. 2016, 17, 1041.

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