It's kind of meta that continuous "machine learning" using artificial neural networks (ANNs) may improve the ability to predict survival in patients with advanced brain cancers.

But there you go. 

The pilot study  used data on patients treated for advanced brain cancer at several hospitals. The results showed that ANNs beat standard prediction models for predicting patient survival - 84% versus 74% using statistical techniques. 

Artificial Neural Networks Predict Brain Cancer Prognosis - Science Codex