Inclusion Criteria:
1. Written informed consent in accordance with study site guidelines.
2. Female 18\~45 years of age when signing the ICF for Part A, and 18\~55 years of age when signing the ICF for Part B.
3. Body mass index (BMI) ≤30 kg/m2.
4. Pathological diagnosis of CIN Grade 2 or 3 as confirmed by central pathological reviewers within 12 weeks prior to administration of first study vaccination.
5. The lesion of CIN Grade 2 or 3 is large enough for histopathologic biopsy at screening and during treatment.
6. Has a satisfactory colposcopy at screening, i.e., the entire lesion as well as the entire squamocolumnar junction (type 1 or 2 transformation zone) is visualizable by colposcopy;
7. Confirmed high-risk HPV infection with HPV16+ and / or HPV18+ by a commercially available high-risk DNA assay (e.g., Cobas® HPV test from Roche).
8. Adequate hematologic, renal, and hepatic function are determined by the Investigator, based upon medical history, physical examination, and laboratory test results at screening:
1. Bone marrow function: absolute neutrophil count ≥1,500/µL, hemoglobin (HGB) ≥ 9 g/dL, and platelets ≥ 100,000/ µL.
2. Renal function: creatinine ≤ 1.5 × institutional upper limit of normal (ULN).
3. Hepatic function: total bilirubin ≤ 1.5 × ULN, Aspartate aminotransferase (AST) and/or alanine transaminase (ALT) ≤ 1.5 × ULN.
9. Women of child-bearing potential (WOCBP) agree to remain sexually abstinent, use medically effective contraception (i.e., complex contraception, male condom and spermicide, contraceptive patches, barrier methods, spermicide, etc.), from enrollment to 9 months after the last injection or have a partner who is sterile (i.e., vasectomy).
10. Able and willing to comply with all study procedures.
Exclusion Criteria:
1. Cervical adenocarcinoma in situ (AIS), or atypical endometrial or glandular cells, or evidence of invasive cervical carcinoma on cervical biopsy within 12 weeks prior to administration of first study vaccination.
2. High-grade intraepithelial neoplasia or invasive carcinoma of vulva, vagina or anus.
3. History of severe allergy to any vaccine or serious hypersensitivity reaction to a known ingredient (e.g., PEG) of RG002 injection judged by the investigator.
4. Active infection with herpes simplex virus (HSV).
5. Positive serological test at screening for HIV virus, active syphilis infection, or positive hepatitis B virus surface antigen (HbsAg) and the number of copies of hepatitis B virus (HBV) deoxyribonucleic acid (DNA) ≥ 500 IU/mL (or 2500 copies, or the lower limit of the positive detection value of the study site) at screening, or HbsAg (-), hepatitis B core antibody (HbcAb) (+) and the number of copies of HBV DNA ≥ 500 IU/mL (or 2500 copies, or the lower limit of the positive detection value of the study site) after treatment of HBV infection, or positive hepatitis C antibody (HCV-Ab) and hepatitis C virus (HCV) ribonucleic acid (RNA) ≥ ULN of the study site.
6. Subjects with a concurrent condition of fatty liver disease at screening.
7. Subjects with poorly controlled diabetes (fasting blood glucose ≥ 10mmol/L) after drug treatment at screening.
8. History of serious cardiovascular and cerebrovascular diseases, including but not limited to serious cardiac rhythm or conduction abnormalities, such as ventricular arrhythmia requiring clinical intervention; repeated 12-lead ECG with QTcF interval ≥ 470 msec; acute coronary syndrome, congestive cardiac failure, aortic dissection, stroke or other Grade 3 or above cardiovascular and cerebrovascular events within 6 months before the first administration; New York Heart Association (NYHA) cardiac function classification ≥ Grade III or hypertension that cannot be clinically controlled (systolic blood pressure ≥ 150 mmHg, diastolic blood pressure ≥ 100 mmHg).
9. Major surgery (except for surgery for diagnostic purposes) within 4 weeks before the first administration or expected to undergo major surgery (except for surgery for diagnostic purposes) during the study period; If major surgery occurred \> 4 weeks prior to the first administration of the study, individual must have recovered adequately from the toxicity and/or complications from the intervention prior to the first administration of the study.
10. Hereditary hemorrhagic tendency or coagulation dysfunction, or a history of thrombosis or hemorrhagic disease, or requirement of continuous use of anticoagulants.
11. Female subjects in pregnancy or lactation, or a positive result on a serum human chorionic gonadotropin (HCG) test at screening (Visit 1) or a positive urine pregnancy test pre-vaccination at Visit 2 (and at subsequent vaccination visits).
12. Currently receiving or has received treatment with systemic steroids in the following dosages prior to administration of the first study vaccination.
1. Long-term corticosteroids: ≥0.5 mg/kg/day of oral prednisolone or equivalent, within 30 days prior to administration of the first study vaccination.
2. Sporadic corticosteroids: ≥1 mg/kg/day of oral prednisolone or equivalent for 2 or more short courses of \> 3 days.
Note: Current or recent use of eye drop or inhaled glucocorticoid therapy is acceptable.
13. Immunosuppression due to treatment for concurrent disease or medical history: HIV treatment, antirheumatic drugs, organ or bone marrow transplantation or relevant treatment.
14. Systemic treatment for malignancy within 2 years of enrollment.
15. Administration of any blood product within 3 months of enrollment.
16. Administration of any vaccine within 4 weeks of enrollment.
17. A history of any therapeutic HPV vaccination (commercially approved prophylactic HPV vaccination is acceptable).
18. Other condition or prior therapy that, in the opinion of the investigator, compromises the subject's welfare or may confound study results.
19. Tattoos, scars, or active lesions/rashes within 2 cm of the intended site of vaccination (deltoid muscle) or any implantable leads, that may affect the safety observation.
20. Adverse events that do not recover to grade 1 during the screening period.
21. Subjects are currently participating or has participated in a study with an investigational drug or device within 30 days of signing informed consent.
22. Subjects who are judged by the investigator to have a history of other serious systemic diseases, or not suitable for participating in the trial for any other reason (the subject has mental illness, alcohol abuse, drug use or drug abuse that may affect her compliance with the trial or may interfere with the interpretation of the study results).
