How should I state a 'PhD dropout' in my CV?

I was a final year PhD student (into the last quarter of year 4) in cancer research (passed my qualifying 2 yrs back) but was let go thereafter due to 'unsatisfactory progress' as my data is not sufficient for a PhD thesis. I have to admit here that I've gradually lost my enthusiasm in the project and kinda burnt up after year 3. I've completed all required modules with a decent GPA (4/5). My supervisor was lenient enough to recommend me to graduate with a MSc instead but am facing some 'cross-deparmental red tape' at the moment to say the least (no news of my MSc transfer after 2.5mths of appeal). I'm in the midst of preparing my CV for future job hunt but decided I should just state my current qualification as a 'BSc'. How should I address this 'failure/ 4-yr gap' in my CV? I have no intention of applying for any academic research jobs but felt it's best that I stay in a relevant field (bio/pharma?). Any advise given would be greatly appreciated. Thank you!