 Recent research has found that a protein called Hsp27 can help cancer cells protect themselves against the effects of cancer treatments. Hsp27 is only found in some lung cancers but when it is present, cancer drugs might not work as well as they would without Hsp27 being present. Blocking the action of Hsp27 or removing Hsp27 from cancer cells with Apatorsen may slow down or stop the cancer growing. This study will therefore look at the relationship between the Hsp27 levels in tumour and blood and the effect of the treatment. 