Please assess the completion status of the following clinical trial:

Trial Title: Transcranial Alternating Current Stimulation for Major Depressive Disorder

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female, 18-65 years old~* Diagnostic and Statistical Manual of Mental Disorder, 4th edition (DSM-IV) diagnosis of MDD; unipolar, non-psychotic~* Hamilton Depression Rating Scale score \>8~* Capacity to understand all relevant risks and potential benefits of the study (informed consent)~* Meet criteria for low suicide risk~* Willing to comply with all study procedures and be available to do so for the duration of the study~* Women of reproductive potential must use highly effective contraception~Exclusion Criteria:~* DSM-IV diagnosis of alcohol of substance abuse (other than nicotine) within the last month or a DSM-IV diagnosis of alcohol or substance dependence (other than nicotine) within the last 6 months~* Current use of benzodiazepines or anti-epileptic drugs~* Current axis I mood, or psychotic disorder other than major depressive disorder~* Lifetime comorbid psychiatric bipolar or psychotic disorder~* Eating disorder (current or within the past 6 months)~* Obsessive-compulsive disorder (lifetime)~* Post traumatic stress disorder (PTSD; current or within the last 6 months)~* Attention Deficit Hyperactivity Disorder (ADHD; currently under treatment)~* Anything that, in the opinion of the investigator, would place the participant at increased risk or preclude the participant's full compliance with or completion of the study~* Neurological disorders, including but not limited to history of seizures (except childhood febrile seizures and ECT induced seizures), dementia, history of stroke, Parkinson's disease, multiple sclerosis, cerebral aneurism~* Medical or neurological illness (unstable cardiac disease, AIDS, malignancy, liver or renal impairment) or treatment for a medical disorder that could interfere with study participation~* History of traumatic brain injury, reoccurring seizures or later cognitive rehabilitation, or causing cognitive sequelae~* Prior brain surgery~* Any brain devices/implants, including cochlear implants and aneurysm clips~* Co-morbid neurological condition (i.e. seizure disorder, brain tumor)~* Non English speakers~* Pregnancy, nursing, or if female and fertile, unwilling to use appropriate birth control measures during study participation

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- tACS (alpha) (Type: EXPERIMENTAL): 10 Hz tACS with a peak-to-peak amplitude of 2 milliamps (mA) for 40 minutes. Uses tACS (alpha) device.
- tACS (gamma) (Type: EXPERIMENTAL): 40 Hz tACS with a peak-to-peak amplitude of 2 milliamps (mA) for 40 minutes. Uses tACS (gamma) device.
- Sham stimulation (Type: SHAM_COMPARATOR): Will include 10 seconds of ramp in to 1 minute of 10 Hz tACS with a ramp out of 10 seconds for a total of 80 seconds of stimulation. Uses tACS (alpha) device.

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