Please assess the completion status of the following clinical trial:

Trial Title: S-1 and Radiotherapy in Elderly Patients With Esophageal Cancer

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE1
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Histologically documented diagnosis of esophageal Cancer~* Disease must be encompassed in a radiotherapy field.Patients with celiac, perigastric, mediastinal or supraclavicular adenopathy are eligible~* age:70-85 years~* Written informed consent.~* Performance status of 0 to 2~* Neutrophil count \>1.5 x 10 to the 9th power/L and platelets \> 100 x 10 to the 9th power/L.~* Hepatic: total bilirubin less than or equal to 1.5 times upper limit of normal (ULN) Alanine transaminase (ALT) and aspartate transaminase (AST) less than or equal to 2.5 times ULN (or less than or equal to 5 times ULN in case of known liver involvement~* Renal: Serum Creatinine less than or equal to 1.5 times upper limit of normal (ULN)~Exclusion Criteria:~* Evidence of tracheoesophageal fistula, or invasion into the trachea or major bronchi.~* Prior invasive malignancy (except non-melanomatous skin cancer) unless disease free for a minimum of 2 years (For example, carcinoma in situ of the breast, oral cavity, or cervix are all permissible).~* Prior systemic chemotherapy or radiation therapy for esophageal cancer

- Gender: ALL
- Minimum Age: 70 Years
- Maximum Age: 85 Years
- Healthy Volunteers: f

Study Arms:
- Chemoradiotherapy with S-1 (Type: EXPERIMENTAL): radiation 54Gy over 30 fractions,and concurrent with s-1 on days 1-14 and 29-42

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