An Exploratory Study of Gemcitabine Hydrochloride Oral Formulation (D07001-F4) in Subjects With Malignant Tumors

Inclusion Criteria:

1. Male or female subjects aged 18 years and older.
2. Signed and dated informed consent form.
3. Subjects with malignant tumors with histological or pathologic confirmation who are clinically stable and will continue on an IV gemcitabine chemotherapy regimen at FDA-approved IV doses after current study or at the Investigator's discretion.
4. World Health Organization (WHO) performance status 0 to 2.
5. At least 28 days have elapsed since the subject's prior systemic therapy, radiotherapy, or any major surgery (excluding diagnostic biopsy or venous access device placement).
6. Subject has an ANC ≥1500 cells/mm³, platelet count ≥ 100,000 cells/mm³, and hemoglobin ≥ 9 g/dL.
7. Subject has adequate liver function demonstrated by transaminases within normal limits (aspartate transaminase and alanine transaminase), total bilirubin ≤ 1.5 mg/dL (unless due to Gilbert's syndrome), albumin ≥ 2.5 g/dL, international normalized ratio [INR] < 1.5) .
8. Subject has adequate renal function: serum creatinine ≤ 1.5X upper limit of normal.
9. Subject has a life expectancy >24 weeks.
10. If a women of child-bearing potential, subject has a negative pregnancy test and is not breast feeding.
11. If a women of child-bearing potential, subject is using a medically acceptable form of birth control prior to screening and for the duration of their study participation and for 1 month after the end of the study.
12. Subject is willing to comply with protocol-required visit schedule and visit requirements and provide written informed consent.

Exclusion Criteria:

1. Subject has rapidly progressive disease or rapid clinical deterioration as assessed by the Investigator.
2. Subject is receiving full-dose (therapeutic) anticoagulation therapy.
3. Subject is receiving concomitant chemotherapy or radiotherapy.
4. Subject is intolerant or allergic or has a known hypersensitivity to gemcitabine.
5. Subject has clinically significant cardiovascular disease (for example: uncontrolled hypertension, unstable angina, congestive heart failure, or New York Heart Association Grade 2 or greater).
6. Subject has uncontrolled serious cardiac arrhythmia.
7. Subject has known active brain metastases, or any leptomeningeal metastases.
8. Subject has a history of drug or alcohol abuse within last year.
9. Subject has documented cerebrovascular disease.
10. Subject has a seizure disorder not controlled on medication.
11. Subject received an investigational agent within 30 days of screening.
12. Subject received systemic treatment for infection within 14 days of screening.
13. Subject has known human immunodeficiency virus infection or viral hepatitis.
14. Subject has any other serious medical condition that, in the investigator's medical opinion, would preclude safe participation in a clinical trial.
15. Subject has gastrointestinal disease or prior gastrointestinal surgery that may interfere with adequate oral therapy absorption