SyB C-0501(Oral Bendamustine) in Patients With Advanced Solid Tumors

Inclusion Criteria:

* 20 years of age or greater at the time of informed consent
* Part 1: Patients with histologically or cytologically confirmed advanced solid tumors refractory to standard therapies or without standard therapies.
* Part 2: patients with advanced solid tumors\* refractory to standard therapies or without standard therapies.

  * \*metastatic breast cancer, small cell lung cancer and other tumors decided based on the Part 1 results
* ECOG performance status 0-1
* Patients with adequate bone marrow, liver, renal, cardiac and pulmonary function as assessed by the following:

  * Absolute neutrophil count (ANC) ≥ 1500/μL, who has not received supportive care of treatment with GCS within 2 weeks before the entry
  * Platelet count ≥ 100,000/μL and Hemoglobin ≥ 9g/dL in patients received no blood transfusions within 2 weeks before the study entry
  * Serum creatinine ≤ 1.5 x upper limit normal (ULN) or estimated creatinine clearance ≥ 50 mL/min using Cockcroft-Gault equation
  * Serum total bilirubin ≤ 1.5 x ULN in patients not suffering from Gilbert's syndrome
  * ALT and AST ≤ 3.0 x ULN (≤ 5.0 x ULN if liver lesions)
  * 12-lead ECG normal
  * LVEF ≥ 55% by echocardiography
  * SpO2 ≥ 95% or PaO2 ≥ 65mmHg
* Acute toxicity in prior treatment has recovered to baseline or CTCAE Grade 0-1 except the adverse events that, in the judgment of the investigator or sub-investigator, would not provide safety risks in the study.
* Serum/urine pregnancy tests performed before the study entry are negative.
* Male and female patients of childbearing potential should give their consent to use adequate contraceptive measures during the study and 180 days after completing study treatment.
* Provision of written, signed and dated informed consent by the patient or legally acceptable representative after the receipt of adequate information regarding the study
* Ability to understand participation in the study, visiting/treatment plan, sampling/analyses and other study procedures; and willingness to follow them

Exclusion Criteria:

* Active, uncontrollable or symptomatic metastatic tumors in CNS
* Complications of interstitial lung disease, pulmonary fibrosis and emphysema diagnosed by chest-X ray or CT scan
* Medical history of radiation, idiopathic or drug-induced pneumonitis
* Major surgery within 4 weeks before study entry or planning it within 4 weeks
* Treatment with immunotherapy, therapeutic antibody or biologics within 4 weeks or their 5 half-lives before study entry, whichever is longer
* Treatment with cytocidal chemotherapy or hormonal therapy within 14 days
* Radiotherapy within 4 weeks before study entry
* Palliative radiotherapy to control metastatic bone pain within 7 days before study entry
* Malabsorption syndrome or full/partial gastric resection
* Patients intolerable to oral administration in the judgment of the investigator or sub-investigator
* Patients under following medical treatment

  * Anticancer therapy approved for advanced cancers
  * Study treatment in other clinical trials
* Active infection including hepatitis B, hepatitis C and human immunodeficiency virus (HIV) detected in blood test
* Lactating women
* Medical history of allergy to the agents similar to the investigational drug such as alkylating agents or purine nucleoside derivatives
* Medical history of allergy to Polyoxyl 40 hydrogenated castor oil or gelatin capsule
* Severe acute or chronic physical/mental condition or laboratory abnormalities which could interfere with evaluation of study treatment or results, or which is likely to progress/worsen due to the participation in the study or administration of SyB C-0501
* Any condition that, in the opinion of the investigator or sub-investigator, makes the patient inappropriate for the study participation.