Please assess the completion status of the following clinical trial:

Trial Title: GTx-758 on Serum Prostate-specific Antigen (PSA) in Men With Castrate Resistant Prostate Cancer

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~1. Be over 18 years of age~2. Be able to communicate effectively with the study personnel~3. Have histologically confirmed prostate cancer~4. ECOG performance status of 0 to 2~5. Have been treated with ADT(chemical or surgical) for at least 6 months~6. Have castrate level of serum total testosterone (\<50 ng/dL)~7. Have a history of serum PSA response after initiation of ADT, serum PSA response is at least a 90% reduction in serum PSA to \<10 ng/mL OR undetectable level of serum PSA (less tan or =0.2 ng/mL)~8. Have rising serum PSA on two successive assessments at least 2 weeks apart and serum PSA levels ≥ 2 ng/mL or 2ng/mL and a 25% increase over the nadir after the initiation of ADT~9. Be continued on androgen deprivation therapy throughout this study~10. Give written informed consent prior to any study specific procedures~11. Subjects must agree to use acceptable methods of contraception:~oIf their female partners are pregnant or lactating acceptable methods of contraception from the time of the first administration of study medication until 3 months following administration of the last dose of study medication must be used. Acceptable methods are: Condom used with spermicidal foam/gel/film/cream/suppository. If the subject has undergone surgical sterilization (vasectomy with documentation of azospermia) a condom with spermicidal foam/gel/film/cream/suppository should be used. oIf the male subject's partner could become pregnant, use acceptable methods of contraception from the time of the first administration of study medication until 3 months following administration of the last dose of study medication. Acceptable methods of contraception are as follows: Condom with spermicidal foam/gel/film/cream/suppository \[i.e. barrier method of contraception\], surgical sterilization (vasectomy with documentation of azospermia) and a barrier method {condom used with spermicidal foam/gel/film/cream/suppository}, the female partner uses oral contraceptives (combination estrogen/progesterone pills), injectable progesterone or subdermal implants and a barrier method {condom used with spermicidal foam/gel/film/cream/suppository}. oIf the female partner has undergone documented tubal ligation (female sterilization), a barrier method {condom used with spermicidal foam/gel/film/cream/suppository} should also be used. oIf the female partner has undergone documented placement of an intrauterine device (IUD) or intrauterine system (IUS) and a barrier method {condom with spermicidal foam/gel/film/cream/suppository} should also be used.~Exclusion Criteria:~1. Known hypersensitivity or allergy to estrogen or estrogen like drugs;~2. Have symptomatic metastatic prostate cancer~3. Any disease or condition (medical or surgical) which might compromise the hematologic, cardiovascular, endocrine, pulmonary, renal, gastrointestinal, hepatic, or central nervous system; or other conditions that may interfere with the absorption, distribution, metabolism or excretion of study drug, or would place the subject at increased risk;~4. History of abnormal blood clotting, Factor V Leiden clotting disorder, thrombotic disease (venous or arterial thrombotic events such as history of stroke, deep vein thrombosis (DVT), and/or pulmonary embolus (PE))~5. Symptomatic congestive heart failure (NYHA Class III - IV), unstable angina pectoris, cardiac arrhythmia~6. The presence of consistently abnormal laboratory values which are considered clinically significant. In addition, no subject with liver enzymes (ALT or AST) above 2 times the ULN, total bilirubin above 2 times the ULN, or serum creatinine above 1.5 ULN will be admitted to the study~7. Received an investigational drug within a period of 90 days prior to enrollment in the study~8. Received the study medication previously~9. Currently taking testosterone, testosterone-like agents, or antiandrogens,including 5-alpha reductase inhibitors (may be eligible if allow a 6 week washout period after stopping antiandrogens);~10. History of prior treatment of cancer chemotherapy agent (other than hormone therapy) or radiopharmaceutical for prostate cancer.~11. Have taken ketoconazole within the previous 12 months prior to randomization into this study~12. Have taken diethylstilbestrol or other estrogen products, ketoconazole, or abiraterone within the previous 12 months prior to randomization into this study~13. Have taken body building or fertility supplements within 4 weeks of admission into the study~14. Have been previously diagnosed with cancer (other than prostate cancer, superficial bladder cancer, or non-melanoma skin cancer).

- Gender: MALE
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- 1000 mg GTx-758 BID (Type: EXPERIMENTAL): subjects will receive daily doses of 1000 mg GTx-758

Based on this trial design, predict the completion outcome and termination type (if applicable).