Study of FluBHPVE6E7 in HPV-16 Infected Women

Randomised, Double-blind, Placebo-controlled Phase 1 Dose-escalation Study of FluBHPVE6E7 in HPV-16 Infected Women With Normal Cytology, CIN1 or CIN2

BS-01 is a randomised, double-blind, placebo-controlled, phase 1 dose escalation study assessing safety, tolerability and immunogenicity of FluBHPVE6E7, changes in the HPV infection status and cervical cytology, and biodistribution in HPV-16 infected women with normal cytology, CIN1 or CIN2. The safety and immunogenicity of two dose levels, 7.5 log10 and 9.0 log10 fTCID50/dose of FluBHPVE6E7 are assessed after three subcutaneous administrations. In addition the safety of 9.0 log10 fTCID50/dose of FluBHPVE6E7 is assessed after three intradermal or intramuscular administrations.

Study Overview

• Status: Completed
• Conditions: HPV Infection
• Intervention / Treatment: Biological: FluBHPVE6E7

Detailed Description

BS-01 is a randomised, placebo-controlled, double- blind phase 1 dose-escalation study in women with normal cytology, CIN1 or CIN2.

The primary objective is to assess the safety and tolerability of FluBHPVE6E7. Secondary objectives are the assessment of the systemic immune responses to immunisations with FluBHPVE6E7, changes in HPV infection status and cervical cytology, and biodistribution.

Study medication is administered three times (Day 0, Week 4, Week 12). Study participants are randomised at a ratio of 3:1 for FluBHPVE6E7 or placebo. The first cohort is treated subcutaneously at dose level 7.5 log10 fTCID50/dose. The second cohort is treated subcutaneously at 9.0 log10 fTCID50/dose.

Interim safety reviews are performed by a Data Monitoring Committee. After completion of the dose-escalation and in order to collect additional safety data on the highest safe and tolerated dose level, additional study participants are enrolled into expansion cohorts treated three times subcutaneously, intradermally or intramuscularly at 9.0 log10 fTCID50/dose.

• Study Type: Interventional
• Enrollment (Actual): 28
• Phase: Phase 1

Contacts and Locations

Study Locations

• Austria
  • Vienna, Austria, 1090
    • Medical University of Vienna

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years to 47 years (Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion criteria:

• Females in general good health, EITHER 18-49 years of age with HPV-16 infection and cervical cytological evaluation with a normal result, OR 25-49 years of age, with HPV-16 infection, and histologically confirmed cervical intraepithelial neoplasia 1 (CIN1) or 2 (CIN2) for whom a "wait-and-see" approach for the study period is indicated
• HPV-16 infection has been confirmed at least twice by a validated HPV test separated by at least 3 months
• Satisfactory colposcopy (i.e. the entire cervix as well as the entire squamocolumnar junction can be visualized by colposcopy and there is no evidence of invasive cancer)
• No clinically significant out of range haematological, renal or hepatic laboratory tests
• Normal screening ECG or screening ECG with no clinically significant findings, as judged by the investigator
• Negative serum pregnancy test at screening
• Agree to use a reliable form of contraception during the whole study period. Reliable forms of contraception are hysterectomy or bilateral tubal ligation, hormonal methods (oral, injected, implanted or transdermal), intrauterine device, barrier method plus spermicide, history of a single male partner with vasectomy, or a history of abstinence deemed credible by the investigator. Furthermore, male partners should use condoms during the whole study period.
• Provides written informed consent

Exclusion criteria:

• Seropositivity (i.e. HAI titres >1:20) to the vector-derived wild type virus
• Any vaccination within 6 weeks of receiving study treatment
• Active significant viral infections including influenza, CMV, and EBV within 30 days of receiving study treatment
• Current cervical intraepithelial neoplasia 3 (CIN3)
• Co-infection with hepatitis B, hepatitis C, or HIV or having other immune deficient states
• Prior history of or current malignancy, high-grade cervical intraepithelial neoplasia (CIN2/3), vulvar intraepithelial neoplasia (VIN), vaginal intraepithelial neoplasia (VAIN), atypical glandular cells (AGC), adenocarcinoma in situ (AIS) or any suspicion of either micro-invasive or invasive disease
• Pregnancy, breastfeeding
• Influenza-like illness (ILI) during the preceding 3 months
• Known hypersensitivity to oseltamivir or any of its components
• Any anatomical condition of the cervix, including that resulting from previous cervical surgery, congenital malformation or other condition, that would interfere with a complete evaluation of the cervix
• Current pelvic inflammatory disease, cervicitis, or other gynaecological infection as per colposcopy and clinical examination
• Serious, concomitant disorder, including active systemic infection requiring treatment
• Presence of acute or chronic bleeding or clotting disorder, or use of blood thinners (e.g. anticoagulants or antiplatelet drugs) within 2 weeks of day 0
• A proven or suspected autoimmune disease
• Immunosuppression including any concurrent condition requiring the continued use of systemic or topical steroids, or the use of immunosuppressive agents, disease modifying doses of anti-rheumatic drugs (e.g., azathioprine, cyclophosphamide, cyclosporine, methotrexate), and biologic disease modifying drugs such as TNF-α inhibitors (e.g. infliximab, adalimumab or etanercept). Corticosteroids must be discontinued > 4 weeks prior to day 0 of study medication administration. Eye drops or ear drops containing corticosteroids are permissible.
• Acute or history of Herpes genitalis
• Prior major surgery within 4 weeks of day 0
• Administration of any blood product within 3 months of enrolment
• Any current significant cardiac, hepatic or renal disease or history of clinically significant, medically unstable disease (e.g. chronic renal failure; angina, myocardial ischemia or infarction, congestive heart failure, cardiomyopathy, or clinically significant arrhythmias)
• Any current or history of neurological disease including history of seizures
• Participation in another experimental protocol/use of investigational drug during the prior two months
• Any condition that, in the judgment of the investigator, might prevent safe participation in the study or interfere with study objectives
• Unability to comply with the protocol requirements

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: FluBHPVE6E7; Multiple administration of FluBHPVE6E7	Biological: FluBHPVE6E7; Multiple subcutaneous, intradermal or intramuscular administrations; Other Names: Placebo
Placebo Comparator: Placebo; Multiple administration of buffer solution	Biological: FluBHPVE6E7; Multiple subcutaneous, intradermal or intramuscular administrations; Other Names: Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of participants with adverse events (type, frequency, severity).	To assess the safety and tolerability of FluBHPVE6E7 by monitoring the type, frequency, and severity of AEs	7 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Hemagglutination Inhibition (HAI) Geometric Mean Titers (GMTs) following FluBHPVE6E7 administration	To evaluate of the induction of systemic vector-specific antibodies by HAI assay	16 weeks
Induction of HPV-specific T-cell response following FluBHPVE6E7 administration	To evaluate the induction of HPV16 E6- and E7-specific T-cells (%) by IFN-gamma ELISPOT analysis	16 weeks
Induction of HPV-specific CD4+ and CD8+ T-cells following FluBHPVE6E7 administration	To evaluate the induction of HPV16 E6- and E7 specific T-cells (%) by ICS and FACS analysis	16 weeks
Local HPV clearance	To evaluate the status of HPV-16 infection by HPV test (yes or no)	16 weeks
Cervical cytology	To evaluate changes in cervical cytology by Pap smear. Results are reported as Pap results according to the Bethesda System	16 weeks
Biodistribution: Detection of FluBHPVE6E7 in blood samples	To evaluate the presence of FluBHPVE6E7 by quantification of FluBHPVE6E7 genome copies in blood samples by RT-qPCR (copies per ml blood)	16 weeks
Biodistribution: Detection of FluBHPVE6E7 in nasal secretions	To evaluate the presence of FluBHPVE6E7 by qualitative real-time PCR assay specific for influenza B virus (positive or negative)	16 weeks
Number of participants with adverse events (type, frequency, severity).	To assess the safety and tolerability of FluBHPVE6E7 by monitoring the type, frequency, and severity of AEs	16 weeks

Collaborators and Investigators

• Sponsor: BlueSky Immunotherapies GmbH

Study record dates

Study Major Dates

• Study Start (Actual): December 9, 2020
• Primary Completion (Actual): March 16, 2023
• Study Completion (Actual): June 6, 2023

Study Registration Dates

• First Submitted: June 30, 2020
• First Submitted That Met QC Criteria: July 24, 2020
• First Posted (Actual): July 29, 2020

Study Record Updates

• Last Update Posted (Actual): June 26, 2023
• Last Update Submitted That Met QC Criteria: June 23, 2023
• Last Verified: June 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Virus Diseases; Infections; Communicable Diseases; Sexually Transmitted Diseases, Viral; Sexually Transmitted Diseases; Disease Attributes; DNA Virus Infections; Tumor Virus Infections; Urogenital Diseases; Genital Diseases; Papillomavirus Infections
• Other Study ID Numbers: BS-01

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No