Abraxane With Anti-PD1/PDL1 in Patients With Advanced Urothelial Cancer

Inclusion Criteria:

- Patients with recurrent unresectable locally advanced or metastatic urothelial
carcinoma (aka transitional cell carcinoma).

- Patients may be either cisplatin-ineligible or platinum-refractory.

- Histological or cytologically proven urothelial carcinoma.

- Have measurable disease based on RECIST 1.1

- Has urothelial cancer that is not suitable for local therapy administered with
curative intent if not already administered.

- Must have recovered (i.e., AE <= Grade 1 or stable) from AEs due to a previously
administered agent.

- ECOG Performance Status of 0, 1 or 2. (Eastern Cooperative Oncology Group Performance
Status: an attempt to quantify cancer patients' general well-being and activities of
daily life. The score ranges from 0 to 5 where 0 is asymptomatic and 5 is death.)

- Prior neoadjuvant or adjuvant systemic therapy or local intravesical chemotherapy or
immunotherapy is permitted.

- Adequate organ and marrow function

- Women of child-bearing potential must either commit to true abstinence or agree to
use, and be able to comply with, effective contraception without interruption, 28 days
prior to starting IP therapy, and while on study medication or for a longer period if
required by local regulations following the last dose of IP; and have a negative serum
pregnancy test result at screening

- Male subjects must practice true abstinence or agree to use a condom during sexual
contact with a pregnant female or a female of childbearing potential while
participating in the study, during dose interruptions and for 6 months following drug
discontinuation, even if he has undergone a successful vasectomy.

- Patients must have < Grade 2 pre-existing peripheral neuropathy

- Be ≥18 years of age as of date of signing informed consent

- Voluntarily agree to participate by providing written informed consent/assent for the
trial

Exclusion Criteria:

- Prior exposure to immune-mediated therapy

- History of allogenic organ transplantation that requires ongoing use of
immunosuppressive agents is NOT permitted

- Active or prior documented autoimmune or inflammatory disorders are NOT permitted

- Current or prior use of immunosuppressive medication(s) within 14 days before study
treatment is NOT permitted.

- Brain metastases or spinal cord compression are NOT permitted unless they have been
treated with the patient's condition being stable clinically and radiologically for 28
calendar days and off steroids for at least 14 days prior to the start of study
treatment.

- Active infection including tuberculosis, hepatitis B, hepatitis C, or human
immunodeficiency virus (HIV) is NOT permitted.

- Receipt of live attenuated vaccine within 30 days prior to the first study treatment
is NOT permitted.

- Is currently participating and receiving study therapy or has participated in a study
of an investigational agent and received study therapy or used an investigation device
within 28 calendar days of the first dose of treatment.

- CTCAE Grade ≥2 peripheral neuropathy is NOT permitted

- If subjects received major surgery they must have recovered adequately from the
toxicity and/or complications from the intervention prior to starting trial therapy

- Has a known additional malignancy that is progressing or requires active treatment

- Has a history of severe hypersensitivity reaction to nab-paclitaxel or anti-PD1/PDL1

- Has a history or current evidence of any condition, therapy, or laboratory abnormality
that might confound the results of the trial, interfere with the subject's
participation for the full duration of the trial, or is not in the best interest of
the subject to participate, in the opinion of the treating investigator

- Has known psychiatric or substance abuse disorders that would interfere with
cooperation with the requirements of the trial

- Pregnancies:

1. Females: nab-paclitaxel can cause harm to an unborn child if given to a pregnant
woman. Females may not take part in this study if pregnant or breast-feeding for
6 months after last dose of study drug.

2. Males: Male subjects should avoid fathering a child while receiving study
medication and for 6 months after the last dose of study medication. Males must
agree to complete abstinence from heterosexual contact or use a condom during
sexual contact with a female of child bearing potential while receiving study
medication and within 6 months after last dose of study medication.

3. Subjects (both males and female) should practice effective contraception during
study and for 6 months after the last dose of study medication (Section 3.1.8 i,
ii).

- Patients with biliary obstruction or biliary stent are excluded.