An Open-label, Multicenter, Multiple Dose, Phase 1 Study to Establish the Maximum Tolerated Dose of E7389 Liposomal Formulation in Patients With Solid Tumors

Inclusion Criteria

• Age 18 years or older.
• Histological or cytological evidence of an unresectable or refractory solid tumor.
• Participants who have at least one measurable lesion (long axis in non-lymph node: greater than or equal to 10 millimeters (mm); short axis in lymph node: greater than or equal to 15 mm) based on Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 in the Expansion Part.
• Adequate liver function as evidenced by bilirubin less than or equal to 1.5 times the upper limits of normal (ULN) and alkaline phosphatase (ALP), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) less than or equal to 3 x ULN (in the case of liver metastases less than or equal to 5 x ULN). In case ALP is greater than 3 x ULN (in absence of liver metastases) or greater than 5 x ULN (in presence of liver metastases) AND participant also is known to have bone metastases, the liver specific ALP must be separated from the total and used to assess the liver function instead of the total ALP.
• Adequate renal function as evidenced by serum creatinine less than or equal to 2.0 milligrams/deciliter (mg/dL) (177 micromole/liter (umol/L)) or calculated creatinine clearance greater than or equal to 40 milliliter/minute (mL/min) per the Cockcroft and Gault formula.
• Adequate bone marrow function as evidenced by absolute neutrophil count (ANC) greater than or equal to 1.5 x 10^9/liter (L), hemoglobin greater than or equal to 9 grams/deciliter (g/dL) (5.5 millimol/liter (mmol/L)) and platelet count greater than or equal to 100 x 10^9/L.
• Females must not be lactating or pregnant at Screening or Baseline (as documented by a negative beta-human chorionic gonadotropin [B-hCG]). A separate baseline assessment is required if a negative screening pregnancy test was obtained more than 72 hours before the first dose of study drug.
• All females will be considered to be of childbearing potential unless they are postmenopausal (amenorrheic for at least 12 consecutive months, in the appropriate age group and without other known or suspected cause) or have been sterilized surgically (i.e., bilateral tubal ligation, total hysterectomy or bilateral oophorectomy, all with surgery at least one month before dosing).
• Females of childbearing potential must not have had unprotected sexual intercourse within 30 days before study entry and must agree to use two highly effective methods of contraception (e.g., total abstinence, an intrauterine device, a double-barrier method [condom and occlusive cap - diaphragm or cervical/vault caps - with spermicidal foam/gel/film/cream/suppository], a contraceptive implant, an oral contraceptive, or have a vasectomized partner with confirmed azoospermia) throughout the entire study period and for 30 days after study drug discontinuation. If currently abstinent, the participant must agree to use a double barrier method with spermicide as described above if she becomes sexually active during the study period or for 30 days after study drug discontinuation. Females who are using hormonal contraceptives must have been on a stable dose of the same hormonal contraceptive product for at least 4 weeks before dosing and must continue to use the same contraceptive during the study and for 30 days after study drug discontinuation.
• Male participants must have had a successful vasectomy (confirmed azoospermia) or they and their female partners must meet the criteria above (i.e., not of childbearing potential or practicing highly effective contraception throughout the study period and for 30 days after study drug discontinuation). No sperm donation is allowed during the study period and for 30 days after study drug discontinuation.
• Provide written informed consent.
• Willing and able to comply with all aspects of the protocol.

Exclusion Criteria

• Females who are pregnant (positive B-hCG [or hCG] test) or breastfeeding.
• Participants who have received any anticancer therapy within