This study is to follow up on the change of immune response by measuring HPV type 16/18 E6 and E7 specific T cell response and lesion condition in subjects who have administered in DNA-based therapeutic vaccine.
This is a follow-up study to investigate the change of immunogenicity and lesion condition in subjects with cervical intraepithelial neoplasia (CIN) 3 who have enrolled and participated GX-188E phase II trial(GX-188E\_CIN3\_P2). Subjects will make visits 7 times for about three years from the last visit of GX-188E phase 2 trial (GX-188E\_CIN3\_P2). The endpoints are to evaluate the change of immune response, involved lesion and infection status compared to that of the final visit in phase 2 trial (GX-188E\_CIN3\_P2).
Study Type
OBSERVATIONAL
Enrollment
67
In phase II study, 72 patients were assigned to two dose groups (1mg and 4mg) and were administered three times with GX-188E by electroporation during an entire period of study. After the final administration, the follow-up will be conducted to investigate safety and efficacy aspects.
Korea University Guro Hospital
Seoul, South Korea
Safety assessment examined by physical examination, vital signs, ECG, clinical laboratory test etc
long term safety assessment of GX-188E DNA vaccine of subjects participated in GX-188E\_ CIN3\_P2 clinical trial \- Safety profile would be examined by physical examination, vital signs, ECG, clinical laboratory test etc
Time frame: at week -18 and 130
lesion recurrence
The change of the CIN lesion (included cervical cancer) would be compared to that of the last visit in phase II study
Time frame: at week -18 and 130
The change of HPV infection status
The change of HPV infection status would be compared to that of the last visit in phase II study.
Time frame: at week -18 and 130
The change of cytology test result
The change of cytology status would be compared to that of the last visit in phase II study.
Time frame: at week -18 and 130
The change of the immune response
It would be determined by evaluating HPV type 16/18 E6 and E7 specific T cell response (IFN-γ ELISPOT: enzyme-linked immunospot assay) using PBMC(peripheral blood monocyte).
Time frame: at week -18 and 130
Flt-3L(fms-related tyrosine kinase 3 ligand) concentration (Flt-3L ELISA) using plasma.
Pharmacodynamics evaluation of GX-188E
Time frame: at week -18 and 130
Survey of pregnancy and delivery
The matters relevant to the subject of pregnancy and delivery would be collected by survey to identify occurence, frequency and characteristic.
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Time frame: at week -18 and 130