| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Metastatic Pancreatic Adenocarcinoma and Metastatic Colorectal Cancer. | 
 
 
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| E.1.1.1 | Medical condition in easily understood language  | 
| Pancreatic cancer and Colorectal Cancer, Gastric. | 
 
 
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| E.1.1.2 | Therapeutic area  | Diseases [C] - Cancer [C04] | 
| MedDRA Classification | 
| 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  | 
| To evaluate the long-term safety and tolerability of napabucasin through the evaluation of AEs, clinically significant physical examination findings, and clinically relevant laboratory results. | 
 
 
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| E.2.2 | Secondary objectives of the trial  | 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
1. The patient is currently participating in a BBI-sponsored parent study of napabucasin and must be receiving napabucasin as monotherapy or a  part of a combination treatment. 2. Written, signed consent for trial participation must be obtained from the patient appropriately in accordance with applicable International Conference on Harmonisation (ICH) guidelines and local and regulatory requirements prior to the performance of any study specific procedure. 3. Must be ≥18 years of age. 4. Currently has no evidence of progressive disease, as determined by the investigator, during treatment with napabucasin (either as monotherapy or as part of a combination treatment regimen) or are deriving clinical benefit despite disease progression according to Investigator's clinical judgement. 5. Continued ability to swallow and retain orally administered study drug(s) and does not have any clinically significant GI abnormalities that may alter absorption such as malabsorption syndrome. 6. Women of childbearing potential (WOCBP) must have a negative serum or urine pregnancy test at screening. 7. Non-fertile or agree to use an adequate method of contraception while on study and for 6 months following the last dose and not currently nursing; males agree to use an adequate method of contraception while on study and for 3 months following the last dose. 8. Patients must be accessible for treatment and follow-up. Patients registered on this trial must receive protocol treatment and be followed at their current (parent study) participating center. 9. Patient agrees not to participate in other interventional clinical studies during their participation in this trial. Patients participating in surveys or observational studies are eligible to participate in this study  | 
 
 
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| E.4 | Principal exclusion criteria | 
1. Permanent discontinuation of napabucasin in the parent study. 2. Napabucasin dose interruption for >4 weeks between the last dose on the parent study and first dose on the rollover study. 3. Women who are pregnant or breastfeeding. Women should not breastfeed while taking study treatment and for 4 weeks after the last dose of napabucasin. Women undergoing combination backbone therapy should not breast feed while on combination backbone therapy and for the period of time following discontinuation of combination backbone therapy as specified in the parent protocol. 4. Hypersensitivity to napabucasin or one of the excipients. 5. Any active disease condition which would render the protocol treatment dangerous or impair the ability of the patient to receive protocol therapy. 6. Any condition (e.g. psychological, geographical, etc.) that does not permit compliance with the protocol. | 
 
 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
1. Adverse Events as characterized by type, frequency, severity (as graded by NCI CTCAE versión 4.0), seriousness, and relationship to study therapy. 2. Laboratory abnormalities as characterized by type, frequency, and severity (as graded by NCIC version 4.0). 3. Vital signs. 4. Physical examination. 5. ECG. | 
 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
1. At screening, at cycle 1, at additional cycles and at the safety follow-up visit. 2. At screening, at cycle 1, at additional cycles and at the safety follow-up visit. 3. At screening, at cycle 1, at additional cycles and at the safety follow-up visit. 4. At screening, at cycle 1, at additional cycles and at the safety follow-up visit. 5. At screening. | 
 
 
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| E.5.2 | Secondary end point(s) | 
 | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
 | 
| 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 |  Yes  | 
| E.6.4 | Safety |  Yes  | 
| E.6.5 | Efficacy |  No  | 
| E.6.6 | Pharmacokinetic |  No  | 
| E.6.7 | Pharmacodynamic |  No  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  No  | 
| E.6.10 | Pharmacogenetic |  No  | 
| E.6.11 | Pharmacogenomic |  No  | 
| E.6.12 | Pharmacoeconomic |  No  | 
| E.6.13 | Others |  No  | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) |  No  | 
| E.7.1.1 | First administration to humans |  No  | 
| E.7.1.2 | Bioequivalence study |  No  | 
| E.7.1.3 | Other |  No  | 
| E.7.1.3.1 | Other trial type description |  | 
| 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.8.2.4 | Number of treatment arms in the trial | 2 | 
| E.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  No  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  Yes  | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 2 | 
| E.8.5 | The trial involves multiple Member States |  No  | 
| 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 | 
| Taiwan | 
 
| United States | 
 
| France | 
 
 
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| 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
                     | 
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| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 2 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 2 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |