Study to Evaluate the Safety and Efficacy of Sirolimus, in Subject With Refractory Solid Tumors

Inclusion Criteria:

* Provision of fully informed consent prior to study specific procedures.
* Patients must be \>= 19 years of age
* Phosphatidylinositide-3-kinase (PIK3CA) mutation, PIK3CA amplification , PIK3CA-AKT pathway aberration( H1047R, E542K, E545K, PTEN LOSS) Refractory solid tumor and/or specific sensitivity to mTOR inhibitors by Avatar scan that has progressed following standard therapy or that has not responded to standard therapy or for which there is no standard therapy.
* ECOG Performance status0-2
* Have measurable or evaluated disease based on RECIST 1.1 as determined by investigator.
* Adequate Organ Function Laboratory values

  * Absolute neutrophil count \>= 1.5 x 109/L, Hemoglobin \>= 9g/dL, Platelets\>=75 x 109/L Bilirubin \<= 1.5 x upper limit of normal AST/ALT \<= 2.5 X upper limit of normal(5.0 x upper limit of normal, for subject with liver metastases) Creatinine\<= 1.5 X UNL
* Patients of child-bearing potential should be using adequate contraceptive measures should not be breast feeding and must have a negative pregnancy test prior to start of dosing
* Adequate heart function

Exclusion Criteria:

* Patients with second primary cancer, except:adequately treated non-melanoma skin cancer, curatively treated in-situ cancer of the cervix, or other solid tumor curatively treated with no evidence of disease for \<= 5 years.
* Has known active central nervous system(CNS) metastases
* Has an active infection requiring systemic therapy
* Pregnancy or breast feeding
* Patients with cardiac problem
* Any previous treatment with sirolimus