OS is defined as the time from randomisation until the date of death due to any cause.

PFS is defined as time from randomization until progression per RECIST 1.1 as assessed by BICR or death due to any cause

Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST): Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progressive Disease (PD) \>= 20% increase in tumor burden relative to nadir or the appearance of one or more new lesions; Stable Disease (SD), not meet criteria for CR/PR/PD. ORR is defined as the proportion of all subjects with confirmed PR or CR according to RECIST 1.1.

ORR will include confirmed complete response (CR) + confirmed partial response (PR) and will be determined as per RECIST version 1.1. A confirmed response is defined to be either a CR or PR noted as the objective status on 2 consecutive evaluations at least 4 weeks apart.

Time from randomization to death from any cause with patients who were alive at the time of the final analysis or who became lost to follow-up censored at their last date known to be alive.

A DLT was defined as treatment-related toxicity that occurred during DLT evaluation period including: any Grade 4 immune-related adverse event (irAE), any Grade 3 colitis or any Grade 3 noninfectious pneumonitis irrespective of duration, any \>= Grade 2 pneumonitis that does not resolve to \<= Grade 1 within 7 days of initiation of maximal supportive care, any other Grade 3 irAE (excluding colitis or pneumonitis) that does not downgrade to Grade 2 within 7 days after onset of the event despite optimal medical management including systemic corticosteroids or does not downgrade to \<= Grade 1 or baseline within 14 days, liver transaminase elevation \> 8 × upper limit of normal (ULN) or total bilirubin \> 5 × ULN, aspartate aminotransferase or alanine aminotransferase \> 3 × ULN with concurrent increase in total bilirubin \> 2 × ULN without evidence of cholestasis or alternative explanations, and any \>= Grade 3 non-irAE (except for the protocol stated conditions).

An adverse event (AE) is any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. A serious adverse event (SAE) is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. The TEAEs are defined as events present at baseline that worsened in intensity after administration of study drug or events absent at baseline that emerged after administration of study drug. There will be no updated results for this outcome measure at the time of end of study.

Participants with clinically important Common Terminology Criteria for Adverse Events (CTCAE) grade changes to 3 or 4 in hematology and chemistry parameters are reported. There will be no updated results for this outcome measure at the time of end of study.

Vital sign assessment included pulse rate, blood pressure, temperature, weight, and respiratory rate. Vital signs abnormalities recorded as TEAEs are reported. There will be no updated results for this outcome measure at the time of end of study.

Number of participants with ECG abnormalities recorded as TEAEs are reported. There will be no updated results for this outcome measure at the time of end of study.

Overall survival (OS) by treatment arm

Determine the recommended phase 2 dose (RP2D) from BCG-unresponsive non-muscle invasive bladder cancer (NMIBC) patients treated with each of the following immunotherapy study regimens: Durvalumab (cohort 1) Durvalumab + intravesical BCG (cohort 2) Durvalumab + radiation (cohort 3) Durvalumab + intravesical Gemcitabine + intravesical Docetaxel (cohort 4) Durvalumab + Tremelimumab + intravesical Gemcitabine + intravesical Docetaxel (cohort 5) Intravesical NAI + intravesical Gemcitabine (cohort 6) Intravesical NAI + intravesical Gemcitabine + intravesical Docetaxel (cohort 7) Subcutaneous NAI + intravesical NAI + intravesical Gemcitabine + intravesical Docetaxel (cohort 8) The RP2D of each immunotherapy study arm is defined as the dose level at which \< 2 out of 6, \< 4 out of 9, or \< 5 out of 12 patients enrolled within an individual study arm experience dose-limiting toxicity.

The complete response rate within each study arm is defined as the proportion of patients within each arm that demonstrate no evidence of recurrent or persistent high grade urothelial carcinoma of the bladder of any stage at any post-treatment disease assessment.

To investigate the safety and tolerability of tremelimumab and/ or MEDI4736 when given to Japanese patients

The primary objective of this phase 1 study is to determine the safety and tolerability of oral Gefitinib in combination with three escalating doses of Tremelimumab and to establish a recommended phase 2 dose. Overall safety profile will be characterized by type, frequency, severity (graded using the National Cancer Institute Common Terminology Criteria for Adverse Events \[NCICTCAE\] Version 4.03), timing of adverse events and laboratory abnormalities in the first and in the following cycles