• 1-year survival & overall survival [ Time Frame: the first day of treatment to death or last survival confirm date ] [ Designated as safety issue: No ]
  

• Tumor response rate [ Time Frame: the ratio between the number of responders and number of patients assessable for tumor resonse ] [ Designated as safety issue: No ]
  
• Time to progression [ Time Frame: the first day of treatment to the date that disease progression is reported ] [ Designated as safety issue: No ]
  
• Toxicity [ Time Frame: the first date of treatment to 30 days after the last dose of study drug ] [ Designated as safety issue: Yes ]
  

Cisplatin-30 mg/m2 on day 1 and 8 repeat q 3 weeks Irinotecan-65 mg/m2 on day1 and 8 repeat q 3 weeks Simvastatin 40 mg per day orally from D1 of cycle 1

Treatment will be continued until disease progression, unacceptable toxicity, or patients' refusal.

Inclusion Criteria:

• Histologic or cytologic diagnosis of SCLC
• Extensive-stage disease, defined as disease extending beyond one hemithorax or involving contralateral mediastinal, hilar or supraclavicular lymph nodes, and/or pleural effusion.
• No prior chemotherapy, immunotherapy, or radiotherapy
• Performance status of 0, 1, 2 on the ECOG criteria.
• At least one unidimensional measurable lesion meeting Response Evaluation Criteria in Solid Tumors (RECIST. 2000).
• Patient compliance that allow adequate follow-up.
• Adequate hematologic (WBC count ≥ 4,000/mm3, platelet count ≥ 150,000/mm3), hepatic (bilirubin level ≤ 1.5 mg/dL, AST/ALT ≤ 80 IU/L), and renal (creatinine concentration ≤ 1.5 mg/dL) function.
• Informed consent from patient or patient's relative.
• Males or females at least 18 years of age.
• If female: childbearing potential either terminated by surgery, radiation, or menopause, or attenuated by use of an approved contraceptive method (intrauterine device [IUD], birth control pills, or barrier device) during and for 3 months after trial. If male, use of an approved contraceptive method during the study and 3 months afterwards. Females with childbearing potential must have a urine negative HCG test within 7 days prior to the study enrollment.
• No concomitant prescriptions including cyclosporin A, valproic acid, phenobarbital, phenytoin, ketoconazole.
• Patients with brain metastasis are allowed unless there were clinically significant neurological symptoms or signs

Exclusion Criteria:

• Inability to comply with protocol or study procedures.
• A serious concomitant systemic disorder that, in the opinion of the investigator, would compromise the patient's ability to complete the study.
• A serious cardiac condition, such as myocardial infarction within 6 months, angina, or heart disease, as defined by the New York Heart Association Class III or IV.
• Second primary malignancy that is clinically detectable at the time of consideration for study enrollment.
• Concurrent administration of any other antitumor therapy.
• Pregnant or breast-feeding.