Establishment and Clinical Assessment of a Prostate Cancer (PCa) Risk Model Based on the Updated Circulating Tumor Cell (CTC) Detection Technique

Establishment and Clinical Assessment of a Prostate Cancer (PCa) Risk Model Based on the Updated Circulating Tumor Cell (CTC) Detection Technique

1. To elucidate the role of CTC detection in the evaluation of risk level in PCa patients, and establish a mathematic model for predicting the pathological status.
2. To explore the possible subtle change in CTC condition after radical prostatectomy.

1. Detect and evaluate the CTC status (a total of 3 times: 1 day before sugery, 3/12 months after surgery) for all of the PCa patients enrolled. Analyze the CTC result with PSA level, needle biopsy and radiological imaging information.
2. Analyze the difference in CTC amount/Epithelial-Mesenchymal ratio between patients in different D'Amico risk level(low/intermediate/high).
3. Establish a mathematic model based on the CTC results and pathological condition observed in operation (OC, organ confined; EPE, extraprostatic extension; SVI, seminal vesicle invasion; LNI, lymph node invasion), and compare this model with the latest version of Partin table.
4. Detect and compare the CTC and PSA level 3/12 months after surgery. Evaluate the radiological condition in 12 months after blood draw.

Inclusion Criteria:

1. Diagnosed with PCa by biopsy, for the first time.
2. Clinical assessed suitable for radical prostatectomy
3. Age ≥ 18 years, able to provide written informed consent
4. No prior systematic or regional treatment for PCa.
5. No neuro-endocrine differentiation or small cell PCa pattern.
6. ECOG status 0-1
7. Expected life span ≥ 12 months.
8. Multiorgan function (heart, lung, liver, kidney) able to tolerate radical prostatectomy, and meet the standard of this study.

Exclusion Criteria:

1. Severe concomitant disease or infection.

2. ALT or AST > 2.5 ULN, or total bilirubin > 1.5 ULN; Creatinine >177umol/L(2.5mg/dL)；Plt < 100,000/uL, Neutrophil <1,500/uL.

3. Known or suspected brain metastasis or leptomeningeal carcinomatosis.

4. Another malignancy in the last 5 years, excluding completely cured melanoma.

5. Severe cardiovascular disease, including:

   Myocardial infarct within 6 months; Uncontrolled angina pectoris within 3 months; Congestive heart failure; Ventricular arrhythmia history with clinical significance; Morbiz type Ⅱ or complete heart block

6. Major surgery (general anesthesia) within 4 weeks.