The effect of CyclinE, Cyclin Dl and P21WAF1/CIP1 in CA and their relations to HPV are not clear at present.

• Cvciln E、Cyclin D1和p21~(WAF1/CIP1)在尖锐湿疣发生发展中的作用及其与HPV的关系如何，目前尚不清楚。