Efficacy and Safety of Cevira® in Patients With Cervical Histologic High-grade Squamous Intraepithelial Lesions (HSIL)

Inclusion Criteria: 1. Biopsy-confirmed HSIL histology determined by a panel of 3 pathologists from a central laboratory in each region (China, US, and Europe); 2. Adequate colposcopy including: 1. visualization of entire cervical transformation zone including the squamocolumnar junction 2. visualization of entire lesion margin 3. Colposcopically visible lesion after biopsy, before treatment (Note: To ensure a colposcopically visible lesion after biopsy, the lesion should cover approximately 15% of the uterine cervix before biopsy) 4. Average sized uterine cervix suitable for application of the Cevira® device 5. Use of adequate birth control until completion of the 6 month assessment visit 6. Age 18 or older (Note: Patients aged 18-20 should not be actively recruited) 7. Signed written informed consent Exclusion Criteria: 1. Biopsy-confirmed HSIL (CIN3) histology with a total lesion area covering more than half of the uterine cervix area 2. Invasive cervical cancer 3. Adenocarcinoma in situ, or other glandular intraepithelial lesions 4. Lesion(s) extending to the cervical canal (as clinically indicated and whether to perform endocervical curettage \[ECC\] test at the discretion of the investigators) 5. Lesion(s) extending to the vaginal vault 6. Current severe pelvic inflammatory disease, severe cervicitis, or other severe gynecological infection as per colposcopy and clinical examination 7. Vaginal bleeding at time of treatment at the discretion of the investigator 8. Pregnancy 9. Nursing 10. Childbirth or miscarriage within six weeks of enrolment 11. Patients who previously received surgical treatment, have incomplete cervical structure and have recurrent HSIL; or patients who received other treatment after the confirmed diagnosis of HSIL 12. History of toxic shock syndrome 13. Known or suspected porphyria 14. Known allergy to hexaminolevulinate or similar compounds (e.g. methyl aminolevulinate or aminolevulinic acid) 15. Known allergy to silicone 16. Use of heart pacemaker 17. Participation in other therapeutic clinical trials using investigational agents either concurrently or within the last 30 days 18. Patients that in the investigator's opinion are not suitable for participation 19. Patient is the investigator or any sub-investigator, research assistant, pharmacist, study coordinator, other staff or relative thereof directly involved in the conduct of the study