Towards the Integration of a Bioprofile in Ocular Melanoma

Approximately 50% of all patients with intraocular melanoma die of metastatic disease, despite successful treatment of the primary tumour. The main factors associated with mortality include: tumour diameter; ciliary body involvement; extraocular tumour spread; epithelioid cell type; high mitotic rate; and chromosome 3 loss. We report the development of a web-based prognostic tool, which integrates all these factors. The cohort comprised 2655 patients (1369 male, 1286 female, mean age: 60.86 years) with histopathological data on 1282 patients and cytogenetic information on 405 patients. There were 871 deaths, 517 of which were from metastatic disease. A Conditional Hazard Estimating Neural Network (CHENN) model has been developed, and used to model the survival probability conditioned on observed clinical data. Such model is trained in the Bayesian framework, which allows model training, model regularization, model comparison and feature selection. The CHENN model is nonlinear, embeds t...

• Type: Conference
• Year: 2007
• Where: IWANN
• Authors: Azzam F. Taktak, Antonio Eleuteri, Christian Setzkorn, Angela Douglas, Sarah Coupland, Paul Hiscott, Bertil E. Damato
• Keywords: Intraocular Melanoma, IWANN 2007, Metastatic Disease, Model