Three CDs?

• DC doubled
• Cato's 1200
• 1200 in old Rome
• Livy's 1,200
• Century-ending Middle Ages year
• XX x LX
• Fin de siècle year
• XL x XXX
• Year in King John's reign

Wikipedia Word definitions in Wikipedia
Colorectal mutant cancer protein is a protein that in humans is encoded by the MCC gene .