Please assess the completion status of the following clinical trial:

Trial Title: SLOS: The Effect of Simvastatin in Patients Receiving Cholesterol Supplementation

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

Eligibility Criteria:
Inclusion Criteria:~* Male or female over 1 years old~* Subject has confirmed diagnosis of Smith-Lemli-Opitz Syndrome~* Subject is currently receiving cholesterol supplementation~Exclusion Criteria:~* Subjects too ill to travel to the study site~* Subjects who are unable to safely undergo study procedures~* Pregnant women

- Gender: ALL
- Minimum Age: 1 Year
- Maximum Age: 89 Years
- Healthy Volunteers: f

Study Arms:
- Placebo (Type: PLACEBO_COMPARATOR): placebo
- Simvastatin (Type: EXPERIMENTAL): 0.5 mg/kg body weight/day

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