Clinical trial NCT06041061: A Study to Evaluate the Efficacy, Safety, and Immunogenicity of SCT1000 in Healthy Women Aged 18-45 Years
Official title: A Multicenter, Randomized, Double-blind, Placebo-controlled Phase III Clinical Trial Evaluating the Efficacy, Safety, and Immunogenicity of a 14- Valent Recombinant Human Papillomavirus Vaccine (SCT1000) in Healthy Women Aged 18-45 Years
Study type: INTERVENTIONAL
Overall status: ACTIVE_NOT_RECRUITING
Phase: PHASE3
Conditions: HPV InfectioN
HPV-Related Carcinoma
Keywords: HPV
Vaccine
Lead sponsor: Sinocelltech Ltd.
Sponsor class: INDUSTRY
Collaborators: name: Guangxi Center for Disease Control and Prevention
name: Henan Center for Disease Control and Prevention
name: Sichuan Center for Disease Control and Prevention
name: Centers for Disease Control and Prevention, China
name: Yunnan Center for Disease Control and Prevention
First posted: 2023-09-18
Enrollment: 18000
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Recombinant 14-Valent Human Papillomavirus Vaccine (Types 6,11,16,18,31,33,35,39, 45,51,52,56,58,59) （Insect Cell）
Primary purpose: PREVENTION

Brief summary: A total of 18000 healthy women aged 18-45 years old were divided into three age groups: 18-26 years old, 27-35 years old, and 36-45 years old. The experimental group and the placebo group were randomly assigned in a ratio of 1:1. All subjects enrolled in the upper arm deltoid muscle were injected with 3 doses of test vaccine or placebo according to the 0, 2, and 6 months immunization program.

Detailed description: Introduction: SCT1000 is a recombinant 14-valent human papillomavirus vaccine (insect cell) that covers all 12 WHO-recognized high-risk oncogenic HPV subtypes Indications are for the prevention of cervical, vulvar, vaginal, and anal cancers, and genital warts caused by HPV6, HPV11 and HPV11 in females 9-45 years of age, as well as intraepithelial neoplasia and AIS. Intraepithelial neoplasia and AIS and genital warts due to HPV6 and HPV11.

Aim:To evaluate the protective efficacy of 3 doses of HPV vaccine (SCT1000) for the prevention of HPV type 6,11,16,18,31,33,35,39,45,51,52,56,58,59-associated lesions in healthy females aged 18-45 years compared with placebo.

Design: A Multicenter, Randomized, Double-blind, Placebo-controlled phase III Clinical trial Subject Information: a total of 18000 healthy women aged 18-45 years selected by inclusion and exclusion criteria.

Cluster situation: a ratio of 1:1 between the experimental group and the placebo group.

End point index: relative index with efficacy, safety, and immunogenicity of SCT1000

Eligibility criteria: Inclusion Criteria:

* 1. Females who are at least 18 years old and less than 46 years old (i.e., 18 to 45 years old).

  2. Subjects sign a written informed consent form (ICF) to participate in the trial voluntarily, and are able to fully understand the trial procedures, the risks of participating in the trial, and the alternative interventions available to them if they do not participate in the trial.

  3. Be able to read, understand and complete the diary/contact card. 4. Be in good health as judged by the history interview and physical examination.

  5. Have a history of sexual behavior prior to enrollment. 6.\*Avoid sexual intercourse (including same-sex or opposite-sex anal, vaginal, or genital/genital contact) and avoid vaginal douching, vaginal cleansing, or the use of vaginal medications or preparations for 48 hours prior to any visit that includes sample collection.

  7. Subjects who are not breastfeeding at the time of enrollment and who have used effective contraception from the time of their last menstrual period until enrollment in the study, and who understand and agree to use effective contraception from the first day of enrollment until 1 month after the last vaccination.

  8.\* Those with axillary body temperature \<37.3°C on the day of enrollment. 9. Note: Subjects who do not meet the \*enrollment criteria are allowed to be screened again, but the enrollment criteria still need to be confirmed again at the time of enrollment.

Exclusion Criteria:

* 1. \*Positive urine pregnancy test or pregnancy (including ectopic pregnancy) that has ended less than 6 weeks ago.

  2. Prior vaccination with a marketed HPV vaccine or already enrolled in a clinical trial of another HPV vaccine or have plans to receive a non-study HPV vaccine during the study period.

  3. Have a prior history of cervical cancer screening abnormalities or lesions \[including HPV DNA positivity, squamous intraepithelial lesions (SIL) or atypical squamous cells of undetermined significance (ASC-US), atypical squamous epithelial cells-without the exception of high grade squamous intraepithelial lesions (ASC-H), atypical glandular cells (AGC), or have cervical intraepithelial neoplasia (CIN), adenocarcinoma in situ (AIS) or cervical cancer\]. ) or cervical cancer, etc.\].

  4. Previous or current anal or genital disease (e.g. vulvar intraepithelial neoplasia, vaginal intraepithelial neoplasia, genital warts, vulvar, vaginal, and anal cancers) 5. Previous total hysterectomy or pelvic radiation therapy or severe developmental abnormalities of the cervix/vagina.

  6. History of drug or alcohol abuse or dependence in the last year. 7. Have hypertension or diabetes mellitus that cannot be controlled and stabilized with pharmacological interventions.

  8. Subjects with a history of severe allergic reactions to any vaccine or medication requiring medical intervention (e.g., anaphylaxis, anaphylactic laryngeal edema, anaphylactic purpura, thrombocytopenic purpura, localized anaphylactic necrotic reaction \[Arthus reaction\], etc.).

  9. Currently immunocompromised or diagnosed with congenital or acquired immunodeficiency, HIV infection, lymphoma, tuberculosis, leukemia, systemic lupus erythematosus (SLE), rheumatoid arthritis (JRA), inflammatory bowel disease, or other autoimmune disease.

  10. Previous splenectomy or impaired splenic function. 11. Currently receiving or have received the following immunosuppressive therapies in the last year: radiation therapy, cyclophosphamide, imidazathioprine, methotrexate, as well as chemotherapy, cyclosporine, leflunomide, tumor necrosis factor-alpha antagonists, monoclonal antibody therapies, intravenous gammaglobulin, anti-lymphocytic serums, or other therapies that are known to interfere with immunity 12. Current treatment with systemic corticosteroids or 2 or more courses of high-dose glucocorticoids lasting one week in the year prior to enrollment. The use of nasal inhaled glucocorticoids or topical short-term topical application on the skin may not be excluded.

  13. Receipt of any immunoglobulin product or blood product within 3 months prior to vaccination, or planning to receive such similar products during the study period from Day 1 to Month 7.

  14. \* Inactivated/recombinant/nucleic acid vaccine, etc. (non-attenuated) within 14 days prior to vaccination or live attenuated vaccine within 28 days prior to vaccination.

  15. Contraindication to intramuscular injection such as thrombocytopenia or other coagulation disorders.

  16. \*Blood donation within 1 week prior to vaccination or planning to donate blood between Day 1 and Month 7 of study participation.

  17. Participation in other experimental clinical studies or studies with unregistered products (drugs or vaccines) or collection of cervical specimens within 3 months prior to vaccination.

  18. Inability to follow trial procedures or planned relocation during the study.

  19. \*Fever (axillary temperature ≥37.3°C) within 3 days prior to vaccination or any acute illness requiring systemic antibiotic or antiviral therapy within the past 5 days.

  20. \*Clinical signs/symptoms suggestive of acute reproductive tract infection (e.g. acute vulvovaginitis/vaginitis/cervicitis \[including purulent cervicitis\], etc.) during gynecological examination.

  21. \* Being in the menstrual period (sampling should be done 2 days after the end of menstruation).

  22. Have an active neurological/psychiatric/psychological disorder that prevents compliance with the study requirements.

  23. Have other abnormalities, conditions that may confound the results of the study, or conditions that are not in the best interest of the subject and may be excluded as determined by the investigator.

  24. Note: Subjects who meet \*exclusion criteria are allowed to be re-screened, but enrollment will still require re-confirmation of inclusion criteria.

Primary outcomes:
measure: Combined Incidence of HPV Type 16/18-related CIN2/3, AIS, Invasive cervical cancer, VIN2/3, VaIN2/3, AIN1/2/3, vulvar, vaginal and anal cancer
timeFrame: 1 month after 3 doses of vaccine
measure: Combined Incidence of HPV Type 31/33/45/52/58-related CIN2/3, AIS, Invasive cervical cancer, VIN2/3, VaIN2/3, AIN1/2/3, vulvar, vaginal and anal cancer
timeFrame: 1 month after 3 doses of vaccine
measure: Combined Incidence of HPV Type 35/39/51/56/59-related CIN2/3, AIS, Invasive cervical cancer, VIN2/3, VaIN2/3, AIN1/2/3, vulvar, vaginal and anal cancer
timeFrame: 1 month after 3 doses of vaccine
Secondary outcomes:
measure: Incidence of 6-month Persistent Infection associated with HPV types 16/18
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 12-month Persistent Infection associated with HPV types 16/18
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 6-month Persistent Infection associated with HPV types 31/33/45/52/58
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 12-month Persistent Infection associated with HPV types 31/33/45/52/58
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 6-month Persistent Infection associated with HPV types 35/39/51/56/59
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 12-month Persistent Infection associated with HPV types 35/39/51/56/59
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 6-month Persistent Infection associated with HPV types 6/11
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of 12-month Persistent Infection associated with HPV types 6/11
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of histopathologically confirmed genital warts related to HPV types 6, 11
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of histopathologically confirmed cervical, and/or anal, and/or vulvar, and/or vaginal lesions cases associated with HPV types 6/11/16/18 infection detected in the cervical cytology specimen
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of histopathologically confirmed cervical, and/or anal, and/or vulvar, and/or vaginal lesions cases associated with HPV types 31/33/45/52/58 infection detected in the cervical cytology specimen
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of histopathologically confirmed cervical, and/or anal, and/or vulvar, and/or vaginal lesions cases associated with HPV types 35/39/51/56/59 infection detected in the cervical cytology specimen
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of histopathologically confirmed cervical, and/or anal, and/or vulvar, and/or vaginal lesions cases associated with HPV types 6/11/16/18/31/33/45/52/58 infection detected in the cervical cytology specimen
timeFrame: 1 month after 3 doses of vaccine
measure: Incidence of histopathologically confirmed cervical, and/or anal, and/or vulvar, and/or vaginal lesions cases associated with HPV types 6/11/16/18/31/33/45/52/58/35/39/51/56/59 infection detected in the cervical cytology specimen
timeFrame: 1 month after 3 doses of vaccine
measure: GMC of total anti-HPV6/11/16/18/31/33/45/52/58/35/39/51/56/59 type-associated specific IgG antibodies assessed by cLIA
timeFrame: At least 1 month after 3 doses of immunization
measure: Positive conversion rate of total anti-HPV6/11/16/18/31/33/45/52/58/35/39/51/56/59 type-associated specific IgG antibodies assessed by cLIA
timeFrame: At least 1 month after 3 doses of immunization
measure: GMT of HPV6/11/16/18/31/33/45/52/58/35/39/51/56/59 type-associated neutralizing antibodies.
timeFrame: At least 1 month after 3 doses of immunization
measure: AEs Incidence
timeFrame: During the entire study period (From Month 0 up to Month 60)
measure: SAEs Incidence
timeFrame: During the entire study period (From Month 0 up to Month 60)
measure: Pregnancy outcomes in pregnant subjects( pregnancy event report form)
timeFrame: During the entire study period (From Month 0 up to Month 60)
Other outcomes:
Locations:
city: Nanning
country: China
facility: Guangxi Center for Disease Control and Prevention
state: Guangxi
city: Zhengzhou
country: China
facility: Henan Center for Disease Control and Prevention
state: Henan
city: Taiyuan
country: China
facility: Shanxi Center for Disease Control and Prevention
state: Shanxi
city: Chengdu
country: China
facility: Sichuan Center for Disease Control and Prevention
state: Sichuan
city: Kunming
country: China
facility: Yunan Center for Disease Control and Prevention
state: Yunan
Study officials:
affiliation: Guangxi Center for Disease Control and Prevention
name: Yi Mo
role: PRINCIPAL_INVESTIGATOR
affiliation: Yunnan Center for Disease Control and Prevention
name: Yan Zheng
role: PRINCIPAL_INVESTIGATOR
affiliation: Centers for Disease Control and Prevention, China
name: Guohua Li
role: PRINCIPAL_INVESTIGATOR
affiliation: Sichuan Center for Disease Control and Prevention
name: Ting Huang
role: PRINCIPAL_INVESTIGATOR
affiliation: Henan Center for Disease Control and Prevention
name: Zhiqaing Xie
role: PRINCIPAL_INVESTIGATOR
References: