Notably, approximately 10% of intracranial tumours are schwannomas.27 Interestingly, NF2 gene mutations are also found in a variety of cancers, including breast cancer and mesothelioma.28, 29, 30 The low grade tumours caused by NF2 gene mutations do not respond well to current cancer drugs and therapy is restricted to surgery and radiosurgery.26 Therefore, there is a need for drug treatment of the diseases. This evidence concerns the gene NF2 and breast cancer.