Please assess the completion status of the following clinical trial:

Trial Title: Double Tract Anastomosis and Gastric Tube Anastomosis to Proximal Gastrectomy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~1. Preoperative endoscopy and biopsy confirmed upper third gastric adenocarcinoma, and predictively feasible of proximal gastrectomy ;~2. Predictively resectable diseases, early gastric cancer, of preoperative staging JGCA 14th Edition cT1N0M0-T2N0M0;~3. Age：≤75 years, or ≥18 years;~4. Without serious disease and malignance disease;~5. Patients without previous history of upper abdominal surgery;~6. WHO performance score ≤2, ASA score ≤3;~7. No limit to sexual and race;~8. informed consent required.~Exclusion Criteria:~1. With the history of the malignance disease;~2. Patients with other severe complications cannot tolerate surgery: such as severe heart and lung diseases, heart function below clinical stage 2, uncontrollable hypertension, pulmonary infection, moderate to severe COPD, chronic bronchitis, severe diabetes and / or renal insufficiency, severe hepatitis and / or function below the rank of CHILD B grade, and severe malnutrition, etc.~3. Patients treated with neoadjuvant chemotherapy or radiation therapy which might affect the efficacy observation;~4. Severity mental diseases;~5. After signature the Clinical trial agreement, patients and their agent will quit the trial;~6. primary lesion cannot be resected in the pattern of transabdominal proximal gastrectomy, but for total gastrectomy, Whipple's procedure, or combined organ resection or with a transthoracic approach surgery~7. After signature the Clinical trial agreement, patients and their agent will quit the trial.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Group B (double-track anastomosis) (Type: EXPERIMENTAL): Patients in the Group B will received the double-track anastomosis with proximal gastrectomy.
- Group A (Gastric tube anastomosis) (Type: OTHER): Patients in the Group A (Gastric tube anastomosis) will take the gastric tube anastomosis with proximal gastrectomy.

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