Please assess the completion status of the following clinical trial:

Trial Title: Participant Preference of Subcutaneous (SC) Versus Intravenous (IV) Herceptin (Trastuzumab) in Human Epidermal Growth Factor Receptor (HER) 2-Positive Early Breast Cancer

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: HEALTH_SERVICES_RESEARCH
- Time Perspective: None
- Masking: NONE
- Phase: PHASE2
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Histologically confirmed HER2-positive primary breast cancer~* No evidence of residual, locally recurrent, or metastatic disease after completion of surgery and chemotherapy (neo-adjuvant or adjuvant)~* Completed neo-adjuvant chemotherapy prior to entry, if received~* At least 8 remaining cycles out of the total 18 planned 3-week cycles, if received IV Herceptin~* Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1~Exclusion Criteria:~* History of other malignancy, except for ductal carcinoma in situ of the breast, curatively treated carcinoma in situ of the cervix, basal cell carcinoma, or other curatively treated malignancies of which the participant has been disease-free for at least 5 years~* Inadequate bone marrow function~* Impaired liver function~* Inadequate renal function~* Serious cardiovascular disease~* Human immunodeficiency virus or hepatitis B or C infection~* Prior maximum cumulative dose of doxorubicin greater than (\>) 360 milligrams per meter-squared (mg/m\^2) or epirubicin \>720 mg/m\^2 or equivalent

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Cohort 1: SC (SID) then IV Herceptin (Type: EXPERIMENTAL): Participants will receive Herceptin on Day 1 of each 3-week cycle for 18 cycles. During Cycles 1 to 4 of the crossover period, SC Herceptin will be administered via single-use injection device (SID), and during Cycles 5 to 8, IV Herceptin will be given. In the continuation period, participants will receive IV Herceptin for up to 10 remaining cycles. Administration will be performed by HCP. Those with at least 2 treatment cycles remaining of the 18-cycle treatment course after the crossover period will be offered the opportunity to self-administer SC Herceptin via SID under the direction of a trained HCP.
- Cohort 1: IV then SC (SID) Herceptin (Type: EXPERIMENTAL): Participants will receive Herceptin on Day 1 of each 3-week cycle for 18 cycles. During Cycles 1 to 4 of the crossover period, IV Herceptin will be given, and during Cycles 5 to 8, SC Herceptin will be administered via SID. In the continuation period, participants will receive IV Herceptin for up to 10 remaining cycles. Administration will be performed by HCP. Those with at least 2 treatment cycles remaining of the 18-cycle treatment course after the crossover period will be offered the opportunity to self-administer SC Herceptin via SID under the direction of a trained HCP.
- Cohort 2: SC (Vial) then IV Herceptin (Type: EXPERIMENTAL): Participants will receive Herceptin on Day 1 of each 3-week cycle for 18 cycles. During Cycles 1 to 4 of the crossover period, SC Herceptin will be administered via handheld syringe using the vial formulation, and during Cycles 5 to 8, IV Herceptin will be given. In the continuation period, participants will receive SC Herceptin via handheld syringe using the vial formulation for up to 10 remaining cycles. Administration will be performed by HCP throughout the study.
- Cohort 2: IV then SC (Vial) Herceptin (Type: EXPERIMENTAL): Participants will receive Herceptin on Day 1 of each 3-week cycle for 18 cycles. During Cycles 1 to 4 of the crossover period, IV Herceptin will be given, and during Cycles 5 to 8, SC Herceptin will be administered via handheld syringe using the vial formulation. In the continuation period, participants will receive SC Herceptin via handheld syringe using the vial formulation for up to 10 remaining cycles. Administration will be performed by HCP throughout the study.

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