How important is the hCG value for predicting dactinomycin failure after methotrexate failure for the low-risk gestational trophoblastic neoplasia: a commentary.hCG for predicting dactinomycin failure in ChinaXiaodong Wu,1 Weiguo Lu,1,2Tao Shen,1Weidong Fei, 3 Lili Chen,1 Xing Xie,1,4 Jiale Qin,2,5 1Department of Gynecologic Oncology, Women’s Hospital, School of Medicine Zhejiang University, Hangzhou, China2Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Hangzhou, China3Department of pharmaceutics, Women’s Hospital, School of Medicine Zhejiang University, Hangzhou, China4Women’s Reproductive Health Research Laboratory of Zhejiang Province, Women’s Hospital, Zhejiang University School of Medicine, Hangzhou, China5Department of Ultrasound, Women’s Hospital, School of Medicine Zhejiang University, Hangzhou, ChinaCorrespondence to: Jiale Qin, PhDAddress: Department of Ultrasound, Women’s Hospital, Zhejiang University School of Medicine, No. 1, Xueshi Road, Hangzhou 310006, ChinaTelephone number: 86-0571-87061501E-mail: qinjiale@zju.edu.cn