Patient description: The patient is a 60 year old man complaining of frequent headaches, generalized bone pain and difficulty chewing that started 6 years ago and is worsening. Examination shows bilateral swellings around the molars. The swellings have increased since his last examination. Several extraoral lesions are detected in the head and face. The swellings are non-tender and attached to the underlying bone. Further evaluation shows increased uptake of radioactive substance as well as an increase in urinary pyridinoline. His serum alkaline phosphatase is 300 IU/L (the normal range is 44- 147 IU/L). His family history is only significant for hypertension in his mother and DM type 2 in his father. The diagnosis of Paget's Disease of Bone was confirmed and Bisphosphonate will be started as first-line therapy.

Clinical trial eligibility criteria: eligible ages (years): 18.0-999.0,  Advanced Solid Tumor Voluntary written informed consent of the patient Age≥18 years Escalating stage: Patients with histologically/cytologically confirmed diagnosis of advanced solid tumors refractory to standard therapy or for whom refuses or cannot tolerate standard treatment or no standard therapy exist (no more than three prior regimens for advanced or unresectable disease) Expansion stage: Patients with histologically confirmed diagnosis of advanced or unresectable SCLC who had failure to one prior platinum -containing line Measurable disease as defined by the v.1.1 Eastern Cooperative Oncology Group (ECOG) performance status (PS) ≤ 2 Life expectancy ≥3 months Adequate bone marrow, renal, hepatic, and metabolic function as follows: Platelet count ≥ 100 x 109/l, Hemoglobin ≥ 90 g/l, absolute neutrophil count (ANC) ≥ 2.0 x 109/l; Alanine aminotransferase (ALT), and aspartate aminotransferase (AST) ≤ 3.0 x upper limit of normal (ULN), ≤ 5.0 x ULN if presence of liver metastases; Alkaline phosphatase ≤ 5.0 x ULN ; Total bilirubin ≤ 1.5 x ULN, and direct bilirubin ≤1 x ULN ; Serum creatinine ≤ 1.5 x ULN or Calculated creatinine clearance: ≥ 30 ml/min (calculated using the Cockcroft and Gault formula); Creatine phosphokinase (CPK) ≤ 2.5 x ULN; Albumin ≥ 3 g/dl Recovery to grade ≤ 1 according to the NCI-CTCAE v.5.0, of any ongoing adverse event derived from previous treatment ( with the exception of grade 2 alopecia and non-painful peripheral sensory neuropathy ) Women of childbearing potential must have a negative serum pregnancy test before study entry. Women of childbearing potential must agree to use a medically acceptable method of contraception throughout the treatment period and for 6 months after discontinuation of treatment. Male patients (female partners is of childbearing potential ) take effective contraceptive measures throughout the treatment period and for 4 months after discontinuation of treatment  Prior treatment with trabectedin Patients with brain metastases, a history of spinal cord compression, or meningeal metastases Suspected or confirmed disease bone marrow involved Bone metastases, obstructive atelectasis, superior vena cava syndrome patients with local symptoms that may require radiotherapy/surgery/endoscopic treatment/interventional intervention; patients with suspected or confirmed pulmonary embolism; uncontrollable large amounts of pleural fluid, ascites and pericardial effusion Patients who received other recent antitumor therapies ( with respect to study treatment start ) : Less than three weeks since the last chemotherapy-containing regimen (six weeks in case of nitrosoureas, mitomycin C ). Less than four weeks since the last monoclonal antibody-containing therapy or radiotherapy (RT) dose >30 Gy. Less than two weeks since the last any other biological/investigational anticancer therapy or palliative radiotherapy ( total dose ≤30 Gy) Concomitant diseases/conditions: History (during the last year) or presence of any of the following: unstable angina, myocardial infarction, New York Heart Association (NYHA) Class II or greater congestive heart failure (CHF), or clinically significant valvular heart disease; History of stroke within 1 year (including ischemic stroke, hemorrhagic stroke); Patients with uncontrolled hypertension (systolic blood pressure greater than 160 mmHg and/or diastolic blood pressure greater than 100 mmHg); History of hypertensive crisis or hypertensive encephalopathy; Severe arrhythmia requiring ongoing pharmacological treatment; Positive tests for Hepatitis B surface antigen (HBsAg) and the peripheral blood hepatitis B virus deoxyribonucleic acid (HBV DNA) titer test is ≥1×103 copies/mL; if the HBsAg is positive, and the peripheral blood HBV DNA titer test is <1×103 copies/ml and in the Investigator's judgment, the patient is under a stable stage of chronic hepatitis B and does not increase the risk of the patient, then the patient is eligible for selection; HCV antibody positive or HIV antibody positive; Active uncontrolled infection requiring ongoing medical treatment within two weeks prior to treatment start. Evidence of bleeding diathesis or significant coagulopathy; Prior or concurrent invasive malignancy other than the primary study indication within 5 years prior to treatment start, except for fully treated cervical carcinoma in situ, basal cell or squamous cell skin cancer, local prostate cancer after radical resection, and ductal carcinoma in situ after radical resection； Any other major illness that, in the Investigator's judgment, not suitable for in this study History of previous bone marrow and/or stem cell transplantation Prior medication requirements: Patients who have used strong inducers or inhibitors of cytochrome P450 3A4 enzyme (CYP3A4) within 2 weeks or 5 half-lives ( whichever is longer ) prior to treatment start; Prophylaxis or treatment for non-febrile neutropenia with G-CSF within two weeks prior to treatment start; Patients who have used erythropoietin and derivatives within 3 weeks prior to treatment start; Patients who have used blood transfusions within 2 weeks prior to treatment start Patients who may need to receive other systemic anti-tumor or radical treatments for local target/non-target lesions during the study period Known history of psychotropic drug, alcohol or drug abuse