A Phase Ib, open label, non randomized study to measure the safety and PK characteristics of APL-1202 at steady-state in adult male and female BCG resistant NMIBC patients when it is administered alone and concurrently with BCG.

Six eligible participants will be administered with APL-1202 one week prior to the first BCG instillation, during the six-week course of BCG instillation, and additional five weeks, for a total of 12 weeks of dosing. Safety assessment will be performed during the entire 13 week study duration. Plasma and urine samples will be collected from each participant at prior to first and fifth BCG instillations for PK analysis.

Subject Eligibility Criteria:

Inclusion Criteria:

1. History of Intermediate Risk or High Risk Transitional Cell Carcinoma Non-Muscle Invasive Bladder Cancer as defined by AUA Guidelines:

   AUA Risk Stratification for Non-Muscle Invasive Bladder Cancer

   Low Risk LGa solitary Ta ≤ 3cm PUNLMPb

   Intermediate Risk Recurrence within 1 year Solitary LG Ta > 3cm LG Ta, multifocal HGc Ta, ≤ 3cm LG T1

   High Risk HG T1 Any recurrent, HG Ta HG Ta, >3cm (or multifocal) Any CISd Any BCG failure in HG patient Any variant histology Any LVIe Any HG prostatic urethral

   a. LG = low grade; b. PUNLMP = papillary urothelial neoplasm of low malignant potential; c. HG = high grade; d. CIS=carcinoma in situ; e. LVI = lymphovascular invasion.

2. History of prior induction course of intravesical BCG, using 1/3 to full dose of BCG for 6 treatments (BCG Naïve will not be eligible). Previous BCG treatment in combination with interferon is allowed.

3. Patients who are eligible will either receive maintenance course (3 treatments 1/3 to full dose) or repeat induction course (6 treatments 1/3 to full dose)

4. Principal Investigator's discretion if patients who have a negative cystoscopy or urine cytology following initial BCG induction, can be placed on maintenance BCG to recurrence of bladder cancer

5. 18 years of age or older

6. Eastern Cooperative Oncology Group (ECOG) performance status < 2

7. Not pregnant or lactating

8. Subjects with child bearing or fathering potential must agree to use adequate contraception during the study and for 3 months after last treatment of investigational drug

9. Agree to study specific informed consent and Health Insurance Portability and Accountability Act (HIPAA) authorization for release of personal health information

10. Adequate baseline complete blood count (CBC), renal and hepatic function:

1) Parameters described as WBC > 3000 cells/mm3, ANC > 1,000 cells/mm3, hemoglobin > 8.5 g/dL, and platelet count >100,000 cells/mm3 2) Adequate renal function: serum creatinine < 1.5 x upper limit of normal (ULN) 3) Bilirubin, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are not more than 2 x Upper Limits of Normal 4) Absolute lymphocyte count ≥ 800/μL before the first dose of APL-1202

Exclusion Criteria:

1. Stage T2 or above urothelial carcinoma or urothelial carcinoma outside the bladder
2. Stage T1 NMIBC recurred at 3 months or shorter from the first dose of prior induction BCG course
3. Recurrent high-grade Ta/T1 disease within 6 months from the last dose of adequate BCG therapy
4. Previous systemic immunotherapy for bladder cancer
5. Prior major surgery (not Transurethral Resection of Bladder Tumor [TURBT/Cystoscopy]), radiation therapy, or systemic therapy within 8 weeks of starting the study treatment
6. National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events (CTCAE) Grade 3 hemorrhage within four weeks from the starting study treatment
7. Any of the following medical conditions within the six months prior to investigational drug administration: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident or transient ischemic attack, or pulmonary embolism
8. Hypertension that cannot be controlled by medications
9. Optic nerve disorders or with a history of optic nerve disorders
10. Other severe acute or chronic medical or psychiatric condition, or laboratory abnormality that may increase the risk associated with study participation or investigational drug administration, or may interfere with the interpretation of study results in the judgment of the Investigator
11. Clinically meaningful allergic reactions or any known hypersensitivity or prior reaction to any of the formulation components in the investigational drug
12. Systemic treatment on any investigational clinical trial within 28 days (or 5 half-lives of that agent, whichever is greater) prior to enrollment
13. Concurrent treatment with immunosuppressive or immunomodulatory agents, including any systemic steroid (exception: inhaled or topically applied steroids, and acute and chronic standard dose nonsteroidal anti-inflammatory drugs (NSAIDs), are permitted). Use of a short course (i.e., ≤ 2 day) of a glucocorticoid is acceptable to prevent a reaction to the IV contrast used for: computed tomography (CT) scans
14. Immunosuppressive therapy, including: cyclosporine, anti-thymocyte globulin, or tacrolimus within three months of study entry
15. Concurrent treatment with strong inducers or inhibitors of CYP450 enzymes
16. Concurrent treatment with low therapeutic index drugs (such as methotrexate) that are renally cleared by OAT1- and OAT3-mediated transport
17. History of prior malignancy, except for adequately treated in situ cancer or basal cell or squamous cell skin cancer or other cancers (e.g. breast, prostate) for which the patient has been disease free and/or received curative therapy. Exclusion of patients described above will be at the discretion of the Sponsor.
18. Progressive or persistent viral or bacterial infection
19. All infections must be resolved, and the subject must remain afebrile for seven days without antibiotics prior to enrollment
20. Urinary tract infection, including particularly bladder infection, must be resolved prior to being placed on study
21. Unmanageable active gastric ulcer or inflammation of gastrointestinal (GI) tract
22. Gastric bleeding within last 6 months prior to enrollment
23. Anuria
24. Unable to take oral medication
25. Unwilling or unable to comply with the protocol or cooperate fully with the Investigator and site personnel
26. Unwilling to sign the informed consent