In cervical cancer patients, CCNE1 amplification occurred in 0.69% of squamous cell carcinomas (SCC, 3/434) and 0.91% of adenocarcinomas (ADC, 3/331), with no amplification detected in adenosquamous carcinomas (0/51; Fig. 1B). This evidence concerns the gene CCNE1 and squamous cell carcinoma.