Fig. 4: MDM4 and CDK6 amplifications demonstrated by FISH.

2-color FISH for CDK6 (green signal) or MDM4 (red signal) in MDM2 balanced intimal sarcomas. The upper image (case 163852) shows tight clustered green signals (CDK6) and almost balanced red signals (MDM4). The lower image (case 129602) shows the opposite constellation with abundant red signals (MDM4) and almost balanced green signals (CDK6).