| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated |  | 
| E.1.1.1 | Medical condition in easily understood language |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 21.1 |  
| E.1.2 | Level | LLT |  
| E.1.2 | Classification code | 10065147 |  
| E.1.2 | Term | Malignant solid tumor |  
| E.1.2 | System Organ Class | 100000004864 |  | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| Phase 1 Dose Escalation: completed Phase 1 Expansion
 •To evaluate ORR in cholangiocarcinoma patients with tumors harboring FGFR2 gene fusions or other FGFR abnormalities
 • To evaluate ORR and EPR (defined as progression-free rate at the end of Cycle 2) in patients with primary CNS tumors harboring FGFR gene fusions or FGFR1 activating mutations
 • To evaluate ORR in a basket of tumor types with tumors harboring FGFR2 amplifications
 •To evaluate ORR in a basket of tumor types with tumors harboring any FGFR gene fusions or activating mutations
 
 Phase 2: • To confirm ORR in iCCA patients with FGFR2 gene fusions or other FGFR2 rearrangements based on independent central radiology review.
 |  | 
| E.2.2 | Secondary objectives of the trial | 
| Phase 1 Dose Escalation: completed Phase 1 Expansion
 •To investigate the safety of TAS-120.
 •To evaluate disease control rate (DCR), DOR, PFS and OS in each treatment group.
 
 Phase 2:
 Key secondary
 •To evaluate DOR
 Other secondary
 •To evaluate the safety and tolerability of TAS-120
 •To evaluate DCR, PFS, and OS
 •To evaluate Patient-Reported Outcomes (PROs)
 
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| 1. Provide written informed consent. 2. Is ≥ 18 years
 3. Has histologically or cytologically confirmed, locally advanced,
 metastatic cancer meeting the following criteria:
 a. Phase 1 Expansion
 i. Patient has failed all standard therapies or standard therapy does not
 exist or is not tolerated.
 ii. Patient is eligible for 1 of the following enrollment groups, based on
 diagnosis, prior therapy, and FGF/FGFR aberrations as shown:
 Group 1 (Enrollment Suspended as of Amendment 7): Patient has
 intrahepatic or extrahepatic cholangiocarcinoma harboring FGFR2 gene
 fusions.
 Group 2: Patient has intrahepatic or extrahepatic cholangiocarcinoma
 harboring FGFR2 gene fusions, and has not received or received less
 than 1 cycle of prior chemotherapy (due to intolerance or patient
 refusal).
 Group 3 (Enrollment Suspended as of Amendment 7): Patient has
 intrahepatic or extrahepatic cholangiocarcinoma harboring FGFR2 gene
 fusions and has received prior treatment with FGFR inhibitors.
 Group 4 (Enrollment suspended as of Amendment 7): Patient has
 intrahepatic or extrahepatic cholangiocarcinoma harboring FGFR
 abnormalities other than FGFR2 gene fusions
 Group 5: Patient has a primary CNS tumor harboring FGFR gene fusion or
 FGFR1 activating mutation and fulfills the criteria (i and ii).
 Group 6 (Enrollment Suspended as of Amendment 7): Patient has
 advanced urothelial carcinoma harboring FGFR3 fusions or FGFR3
 activating mutations.
 Group 7: Patient has any tumor type not included in one of the prior
 groups, harboring FGFR2 amplification (no minimum number of copies).
 Group 8 (Enrollment Suspended as of Amendment 7): Patient has any
 tumor type not included in one of the prior groups, harboring FGFR gene
 fusions or activating mutations.
 b. Phase 2
 i. Patient has histologically or cytologically confirmed, locally advanced,
 metastatic, unresectable iCCA harboring FGFR2 gene fusions or other
 FGFR2 rearrangements based on results from either of the following
 a. Testing by Foundation Medicine:
 i. As part of study pre-screening; or
 ii. Previously tested by Foundation Medicine; in this case, it is requested
 that tumor tissue should be provided to Foundation Medicine if available.
 b. Local laboratory testing using next generation sequencing [NGS],
 fluorescence in situ hybridization [FISH], or other assays that can
 determine FGFR2 gene fusions or other FGFR2 rearrangements on tumor
 tissues or from ctDNA; it is requested that patients enrolled on this basis
 provide tumor tissues to Foundation Medicine if available from either
 archival samples or fresh tumor biopsy.
 ii. Patient has been treated with at least one prior systemic gemcitabine
 and platinum-based chemotherapy. Patients with prior adjuvant
 gemcitabine-platinum chemotherapy are eligible if the patient had
 recurrence within 6 months of the last dose of the regimen.
 iii. Patient has documentation of radiographic disease progression on
 the most recent prior therapy
 4. Patient has measurable disease as defined by Response Evaluation
 Criteria in Solid Tumors (RECIST) guidelines (version 1.1, 2009) for
 advanced solid tumors or RANO criteria (2010) for brain tumors.
 5. Eastern Cooperative Oncology Group (ECOG) performance status 0 or
 1 on Day 1 of Cycle 1
 6. Able to take medications orally
 7. Adequate organ function as defined by the following criteria:
 a. Aspartate aminotransferase (AST) and alanine aminotransferase
 (ALT) ≤ 3.0 ×upper limit of normal (ULN); if liver function abnormalities
 are due to underlying liver metastasis, AST and ALT ≤ 5 × ULN.
 b. Total bilirubin ≤ 1.5 × ULN, or ≤ 3.0 mg/dL for patients with Gilbert's
 syndrome.
 c. International normalized ratio (INR) <1.3 (or < 3.0 on
 anticoagulants)
 d. Absolute neutrophil count ≥ 1000/mm3 (i.e., ≥ 1.0 × 109/L by
 International Units [IU])
 e. Platelet count ≥ 75,000/mm3 (IU: ≥ 75 × 109/L)
 f. Hemoglobin ≥ 9.0 g/dL
 g. Phosphorus ≤ ULN.
 8. Creatinine clearance (calculated* or measured value**): ≥ 40
 mL/min
 9. Women of child-bearing potential (WOCBP) must have a negative
 pregnancy test (urine or serum) within 7 days prior to administration of
 the first dose of TAS 120. Female patients are not considered to be of
 child bearing potential if they have a history of hysterectomy or are post
 menopausal defined as no menses for 12 months without an alternative
 medical cause. Both males and females of reproductive potential must
 agree to use effective birth control during the study prior to the first
 dose and for 6 months after the last dose.
 10. Willing and able to comply with scheduled visits and study
 procedures
 |  | 
| E.4 | Principal exclusion criteria | 
| 1.	History and/or current evidence of clinically significant non-tumor related alteration of calcium-phosphorus homeostasis. 2.	History and/or current evidence of clinically significant ectopic mineralization/calcification.
 3.	History and/or current evidence of clinically significant retinal disorder confirmed by retinal examination.
 4.	History or current evidence of serious uncontrolled ventricular arrhythmias
 5.	Fridericia’s corrected QT interval (QTcF) > 470 ms on ECG conducted during Screening.
 6.	Treatment with any of the following within the specified time frame prior to the first dose of TAS-120:
 a.	Major surgery within the previous 4 weeks (the surgical incision should be fully healed prior to the first dose of TAS 120).
 b.	Radiotherapy for extended field within 4 weeks or limited field radiotherapy within 2 weeks.
 c.	Patients with locoregional therapy, e.g., transarterial chemoembolization (TACE), selective internal radiotherapy (SIRT) or ablation within 4 weeks.
 d.	Any noninvestigational anticancer therapy within 3 weeks or have not recovered from side effects of such therapy prior to TAS 120 administration (mitomycin within prior 5 weeks).
 •	Targeted therapy or immunotherapy within 3 weeks or within 5 half-lives (whichever is shorter)
 e.	Any investigational agent received within 5 half-lives of the drug or 4 weeks, whichever is shorter. Concurrent participation in an observational study may be allowed after review by the Sponsor’s Medical Monitor.
 f.	Patients with prior FGFR-directed therapy.
 7.	A serious illness or medical condition(s) including, but not limited to, the following:
 a.	Known brain metastasis (not including primary brain tumors) unless patient is clinically stable for ≥ 1 month.
 b.	Known acute systemic infection.
 c.	Myocardial infarction, severe/unstable angina, symptomatic congestive heart failure (New York Heart Association [NYHA] Class III or IV (see Appendix D, New York Heart Association [NYHA] Classification) within the previous 2 months; if > 2 months, cardiac function must be within normal limits and the patient must be free of cardiac-related symptoms.
 d.	Chronic nausea, vomiting, or diarrhea considered to be clinically significant in the opinion of the investigator.
 e.	Congenital long QT syndrome, or any known history of torsade de pointes, or family history of unexplained sudden death.
 f.	Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that in the judgment of the investigator would make the patient inappropriate for entry into this study.
 8.	Patients with a history of another primary malignancy that is currently clinically significant, and has potential for metastases or currently requires active intervention (except for gonadotropin-releasing hormone (GnRH) or luteinizing hormone-releasing hormone (LH-RH) agonists in prostate cancer or adjuvant hormonal therapy in breast cancer).
 9.	Pregnant or lactating female.
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| For Phase 1 Expansion, the primary endpoint is ORR in each treatment group (and EPR for primary CNS tumors). For Phase 2, the primary endpoint is ORR.
 Primary endpoints will be based on the independent review of images by the Core Imaging Laboratory. In addition, for the Phase 2 part of the study, sensitivity analyses for some key efficacy endpoints (e.g., ORR, and PFS) will be performed based on investigators or local radiologist assessments.
 |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| The endpoint is based on Overall response rate (ORR). 
 
 |  | 
| E.5.2 | Secondary end point(s) | 
| For Phase 1 Expansion,  secondary endpoints of DOR, DCR, PFS, and OS in each treatment group. For Phase 2, secondary endpoints of DOR, DCR, PFS, PROs and OS.
 Primary endpoints will be based on the independent review of images by the Core Imaging Laboratory. In addition, for the Phase 2 part of the study, sensitivity analyses for some key efficacy endpoints (e.g., ORR, and PFS) will be performed based on investigators or local radiologist assessments.
 
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| The assessment of DCR will parallel that of ORR, with DCR defined as the proportion of patients with objective evidence of CR, PR, or SD, except that there is no requirement for a confirmation of an SD response, if it is maintained for at least 6 weeks post treatment initiation. Disease control rate will be analyzed using the same methodology as ORR.
 |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | Yes | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | Yes | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | Yes | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | No | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | Yes | 
| E.7.1.1 | First administration to humans | Yes | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | Yes | 
| E.7.1.3.1 | Other trial type description | 
| dose-escalation and dose-expansion |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | Yes | 
| E.7.3 | Therapeutic confirmatory (Phase III) | No | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | No | 
| E.8.1.1 | Randomised | No | 
| E.8.1.2 | Open | Yes | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | No | 
| E.8.1.5 | Parallel group | No | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | No | 
| E.8.2.3 | Other | No | 
| E.8.3 | The trial involves single site in the Member State concerned | Yes | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | No | 
| E.8.5 | The trial involves multiple Member States | Yes | 
| E.8.5.1 | Number of sites anticipated in the EEA | 25 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | Yes | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | No | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned | 
| Australia |  
| Canada |  
| France |  
| Germany |  
| Hong Kong |  
| Italy |  
| Japan |  
| Korea, Republic of |  
| Netherlands |  
| Portugal |  
| Spain |  
| Taiwan |  
| United Kingdom |  
| United States |  | 
| E.8.7 | Trial has a data monitoring committee | No | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial | 
| For the Phase 1 Expansion part of the study, patients in each treatment group should be followed for survival for up to 12 months after the last patient enrolled in that group. For Phase 2, patients should be followed for survival for up to 18 months after the last patient enrolled in this phase of the study.
 |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 5 | 
| E.8.9.1 | In the Member State concerned months | 8 | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 5 | 
| E.8.9.2 | In all countries concerned by the trial months | 8 |