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Participants will receive E7090 140 mg (milligram), tablets orally once daily (QD), in 28-days treatment cycle until disease progression, development of unacceptable toxicity, participant requests to discontinue, withdrawal of consent or study termination.

E7090

The primary purpose of the study is to assess the objective response rate (ORR) of E7090 by Response Evaluation Criteria In Solid Tumors (RECIST) 1.1 based on independent imaging review (IIR) in participants with unresectable cholangiocarcinoma with FGFR2 gene fusion who failed gemcitabine-based combination chemotherapy.

A Study of E7090 in Participants With Unresectable Advanced or Metastatic Cholangiocarcinoma With Fibroblast Growth Factor Receptor (FGFR) 2 Gene Fusion

A Multicenter, Open-Label, Phase 2 Trial of E7090 in Subjects With Unresectable Advanced or Metastatic Cholangiocarcinoma With FGFR 2 Gene Fusion

Eisai's data sharing commitment and further information on how to request data can be found on our website http://eisaiclinicaltrials.com/.

The ORR will be assessed by IIR based on RECIST version 1.1. ORR is defined as a percentage of participants with best overall response (BOR) of complete response (CR) or partial response (PR). CR: disappearance of all (targeted and non-target \[NT\]) lesions. PR: For PR, longest diameter will be used for non-lymph target lesions but short axis is measured for lymph lesions. PR: greater than or equal to (\>=) 30 percent (%) decrease in sum of diameters of target lesions taking as reference baseline, associated to non-progressive disease (non-PD) response for (NT) lesions.

PFS will be assessed by IIR based on RECIST version 1.1. PFS is defined as the time from the date of first dose to the date of first documentation of progressive disease (PD) or date of death from any cause, whichever occurs first. PD per RECIST 1.1 is defined as at least a 20% relative increase and 5 mm absolute increase in the sum of diameters of target lesions (taking as reference the smallest sum on study) recorded since the treatment started or the appearance of 1 or more new lesions.

DOR will be assessed by IIR based on RECIST version 1.1. DOR is defined as the time from the date of first documentation of CR or PR to the date of first documentation of disease progression or date of death from any cause, whichever occurs first. CR: disappearance of all lesions. PR: For PR, longest diameter will be used for non-lymph target lesions but short axis is measured for lymph lesions. PR: greater than or equal to \>=30% decrease in sum of diameters of target lesions taking as reference baseline, associated to non-PD response for NT lesions.

TTR will be assessed by IIR based on RECIST version 1.1. TTR is defined as the time from the date of first study dose to the date of first documentation of CR or PR. CR: disappearance of all lesions. PR: For PR, longest diameter will be used for non-lymph target lesions but short axis is measured for lymph lesions. PR: greater than or equal to \>=30% decrease in sum of diameters of target lesions taking as reference baseline, associated to non-PD response for NT lesions.

OS is defined as the time from the date of first dose to the date of death from any cause. For the participants who are alive or unknown, OS is censored as the date of last known alive date.

DCR will be assessed by IIR based on RECIST version 1.1. DCR is defined as a percentage of participants with BOR of CR, PR or stable disease (SD). The BOR of SD has to be observed greater than or equal to (\>=) 7 weeks from the date of first study dose. CR: disappearance of all lesions. PR: For PR, longest diameter will be used for non-lymph target lesions but short axis is measured for lymph lesions. PR: greater than or equal to \>=30% decrease in sum of diameters of target lesions taking as reference baseline, associated to non-PD response for NT lesions.

CBR will be assessed by IIR based on RECIST version 1.1. CBR is defined as a percentage of participants with BOR of CR, PR or durable SD (dSD) (duration of SD \>=23 weeks). CR: disappearance of all lesions. PR: For PR, longest diameter will be used for non-lymph target lesions but short axis is measured for lymph lesions. PR: greater than or equal to \>=30% decrease in sum of diameters of target lesions taking as reference baseline, associated to non-PD response for NT lesions.

Spots Global Cancer Trial Database for fgfr2 gene fusion