Safety and Efficacy of FE 999326 Administered Intravesically to Japanese Subjects with High-grade, BCG Unresponsive, Non-muscle Invasive Bladder Cancer (NMIBC)

Phase 3

Active, not recruiting

• Conditions: Bladder Cancer
• Interventions: Drug: FE 999326

• Registration Number: NCT05704244
• Lead Sponsor: Ferring Pharmaceuticals

Brief Summary

To evaluate the safety and efficacy of FE 999326 in Japanese subjects with high-grade, BCG unresponsive NMIBC.

Detailed Description

Not available

Study Timeline

• Study Start: 2022-12-21
• Study First Submitted: 2022-12-21
• Study First Submitted QC: 2023-01-19
• Study First Posted: 2023-01-30
• Status Verified: 2025-02
• Last Update Submitted: 2025-02-12
• Last Update Posted: 2025-02-13
• Primary Completion: 2025-10-30
• Study Completion: 2029-09-30

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 25

Inclusion Criteria

• Have at entry, confirmed by a pathology report:

  1. Carcinoma in situ (CIS) only
  2. Ta/T1 high-grade disease with concomitant CIS or
  3. Ta/T1 high-grade disease without concomitant CIS

• Subjects who did not respond to BCG treatment and have a persistent high-grade recurrence within 12 months after BCG was initiated, and those who despite an initial complete response to BCG, relapse with CIS within 12 months of their last intravesical treatment with BCG or relapse with high-grade Ta/T1 NMIBC within 6 months of their last intravesical treatment with BCG.

• Life expectancy >2 years, in the opinion of the investigator

• Eastern Cooperative Oncology Group (ECOG) status 2 or less

• Absence of concomitant upper tract urothelial carcinoma or urothelial carcinoma within the prostatic urethra

• Subjects with prostate cancer on active surveillance at low risk for progression, defined as prostate-specific antigen (PSA) <10 ng/dL

Exclusion Criteria

• Current or previous evidence of muscle invasive (muscularis propria) or metastatic disease presented at the screening visit.

• Current systemic therapy for bladder cancer

• Current or prior investigational treatment for BCG unresponsive NMIBC or any other investigational drug within 1 month prior to screening

• Current or prior pelvic external beam radiotherapy within 5 years of entry

• Use of other adenovirus vector medications, including COVID-19 vaccines, within 2 weeks before and after instillation

• History of malignancy of other organ system within past 5 years, except treated basal cell carcinoma or squamous cell carcinoma of the skin and ≤pT2 upper tract urothelial carcinoma at least 24 months after nephroureterectomy.

• Subjects who cannot hold instillation for 1 hour

• Subjects who cannot tolerate intravesical dosing or intravesical surgical manipulation

• Intravesical therapy within 8 weeks prior to beginning trial treatment, with the exception of:

  • Cytotoxic agents when administered as a single instillation immediately following a TURBT procedure
  • Previous intravesical BCG therapy

• Systemic immunosuppressive therapy within 3 months prior to screening

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
FE 999326	FE 999326	-

Primary Outcome Measures

Name	Time	Method
Whether or not a subject with CIS (with or without concomitant high-grade Ta or T1 papillary disease) responds to treatment, defined as complete response at any time after first administration of FE 999326	At Month 12 assessment	A subject with CIS (with or without concomitant high-grade Ta or T1 papillary disease) has achieved a complete response at an efficacy assessment if urine cytology is negative and there are no lesions on cystoscopy. If biopsy of the bladder is performed, this must be negative.

Secondary Outcome Measures

Name	Time	Method
Duration of complete response in subjects with CIS (with or without concomitant high-grade Ta or T1 papillary disease) who show a complete response at any time after first administration of FE 999326	Up to 5 years
Whether or not a subject with high-grade Ta or T1 papillary disease (without concomitant CIS) responds to treatment, defined as absence of recurrence of high-grade disease	Up to 4 years
Duration of event-free survival in subjects with high-grade Ta or T1 papillary disease (without concomitant CIS) and in subjects with CIS (with or without papillary disease)	Up to 5 years
Incidence of cystectomy	Up to 4 years
Time to cystectomy	Up to 4 years
Overall survival	Up to 5 years
Concentration of FE 999326-specific DNA levels in urine	Up to day 1 of month 4 after start of treatment; and 3, 6, 9 and 12 months after last dose (up to 5 years after start of treatment)
Type, incidence, relatedness and severity of treatment emergent adverse events	Up to 5 years

Trial Locations

Locations (1)

Ferring Investigational Site; 🇯🇵 Wakayama-shi, Wakayama, Japan