ADSTILADRIN (=INSTILADRIN) in Patients With High Grade, Bacillus Calmette-Guerin (BCG) Unresponsive Non-Muscle Invasive Bladder Cancer (NMIBC)
Condition: Superficial Bladder Cancer
MeSH terms: Urinary Bladder Neoplasms; Non-Muscle Invasive Bladder Neoplasms
Intervention: ADSTILADRIN
Phase: Phase 3
Study type: Interventional
Primary purpose: Treatment
Intervention model: Single Group Assignment
Masking: None (Open Label)
Enrollment: 157.0
Sex: All
Minimum age: 18 Years
Healthy volunteers: No
Keywords: IFN; BCG-unresponsive; Non-Muscle Invasive Bladder Cancer (NMIBC)

Summary:

      Previous multi-dose Phase I and Phase II clinical studies have demonstrated that ADSTILADRIN
      is a safe and effective treatment for BCG-refractory and recurrent NMIBC. This Phase III
      study is designed to expand those observations using a high dose of ADSTILADRIN in patients
      that are "BCG Unresponsive" which refers to patients with high-grade NMIBC who are unlikely
      to benefit from and should not receive further intravesical BCG.
    

Eligibility criteria:

        Inclusion Criteria:

          1. Aged 18 years or older at the time of consent

          2. Able to give informed consent

          3. Have, at entry, confirmed by a pathology report:

             Carcinoma in situ (CIS) only; Ta/T1 high-grade disease with concomitant CIS; or Ta/T1
             high-grade disease without concomitant CIS

          4. Are "BCG Unresponsive" which refers to patients with high-grade NMIBC who are unlikely
             to benefit from and who will not receiving further intravesical BCG. The term "BCG
             unresponsive" includes patients 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 (CR) to BCG, relapse with high-grade 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.
             The following criteria define the patients who may be included in the study:

               -  Have received at least 2 previous courses of BCG within a 12 month period -
                  defined as at least 5 of 6 induction BCG instillations and at least 2 out of 3
                  instillations of maintenance BCG, or at least two of six instillations of a
                  second induction course, where maintenance BCG is not given

                    -  Exception: those who have T1 high-grade disease at first evaluation after
                       induction BCG alone (at least 5 of 6 doses) may qualify in the absence of
                       disease progression

               -  At the time of tumor recurrence, patients with CIS alone or high-grade Ta/T1 with
                  CIS should be within 12 months of last exposure to BCG and patients with Ta/T1
                  without CIS should be within 6 months of last exposure to BCG

               -  No maximum limit to the amount of BCG administered

               -  All visible papillary tumors must be resected and those with persistent T1
                  disease on transurethral resection of bladder tumor (TURBT) should undergo an
                  additional re-TURBT within 14 to 60 days prior to beginning study treatment.
                  Obvious areas of CIS should also be fulgurated.

          5. Available for the whole duration of the study

          6. Life expectancy >2 years, in the opinion of the investigator

          7. Eastern Cooperative Oncology Group (ECOG) status 2 or less

          8. Absence of concomitant upper tract urothelial carcinoma or urothelial carcinoma within
             the prostatic urethra. Freedom from upper tract disease (if clinically indicated) as
             indicated by no evidence of upper tract tumor by either intravenous pyelogram,
             retrograde pyelogram, computed tomography (CT) scan with or without urogram, or MRI
             with or without urogram performed within 6 months of enrollment

          9. Patients with prostate cancer on active surveillance at low risk for progression,
             defined as Prostate-Specific Antigen (PSA) < 10 ng/dL, Gleason score 6 and clinical
             stage tumor-1 (cT1) are permitted to be in the study at the discretion of the
             investigator (see exclusion criterion 10).

         10. Female patients of childbearing potential must use maximally effective birth control
             during the period of therapy, must be willing to use contraception for 1 month
             following the last study drug infusion and must have a negative urine or serum
             pregnancy test upon entry into this study. Otherwise, female patients must be
             postmenopausal (no menstrual period for a minimum of 12 months) or surgically sterile.
             'Maximally effective birth control' means that the patient, if sexually active, should
             be using a combination of two methods of birth control that are approved and
             recognized to be effective by Regulatory Agencies

         11. Male patients must be surgically sterile or willing to use a double barrier
             contraception method upon enrollment, during the course of the study, and for 1 month
             following the last study drug infusion

         12. Adequate lab values

        Exclusion Criteria:

          1. Current or previous evidence of muscle invasive (muscularis propria) or metastatic
             disease presented at the screening visit. Examples that increase the risk of
             metastatic disease are (but not limited to):

               -  Presence of lymphovascular invasion and/micropapillary disease as shown in the
                  histology of the biopsy sample

               -  Patients with T1 disease accompanied by the presence of hydronephrosis secondary
                  to the primary tumor

          2. Current systemic therapy for bladder cancer

          3. Current or prior pelvic external beam radiotherapy within 5 years of entry

          4. Prior treatment with adenovirus-based drugs

          5. Suspected hypersensitivity to IFN alfa2b

          6. Symptomatic urinary tract infection or bacterial cystitis (once satisfactorily
             treated, patients can enter the study)

          7. Clinically significant and unexplained elevated liver or renal function tests

          8. Women who are pregnant or lactating or refuse to commit to use contraception anytime
             during the study

          9. Any other significant disease or other clinical findings which in the opinion of the
             investigator would prevent study entry

         10. History of malignancy of other organ system within past 5 years, except treated basal
             cell carcinoma or squamous cell carcinoma of the skin and ≤ pathological tumor-2 (pT2)
             upper tract urothelial carcinoma at least 24 months after nephroureterectomy. Also
             patients with genitourinary cancers other than urothelial cancer or prostate cancer
             that are under active surveillance are excluded (see inclusion criterion 9)

         11. Patients who cannot hold instillation for 1 hour

         12. Patients who cannot tolerate intravesical dosing or intravesical surgical manipulation

         13. Intravesical therapy within 8 weeks prior to beginning study treatment with the
             exception of:

               -  cytotoxic agents (e.g. Mitomycin C, doxorubicin and epirubicin) when administered
                  as a single instillation immediately following a TURBT procedure which is
                  permitted between 14 to 60 days prior to beginning study treatment

               -  previous intravesical BCG therapy, which can be given at least 5 weeks before the
                  diagnostic biopsy required for entry into the study