Please assess the completion status of the following clinical trial:

Trial Title: Taxonomic and Functional Composition of the Intestinal Microbiome: a Predictor of Rapid Cognitive Decline in Patients With Alzheimer's Disease

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: DIAGNOSTIC
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~For Alzheimer groups without DCR and Alzheimer with DCR:~* patients between 70 and 90 years old~* with mild to moderate Alzheimer's disease (MMSE\> 15/30),~* followed in the CMRR of the University Hospital of Nantes or Angers~* having given their informed consent~For the control group (non-Alzheimer's)~* more patients between 70 and 90 years~* consultant for a subjective memory complaint isolated at the CMRR of Nantes or Angers University Hospital,~* having given their informed consent~Exclusion Criteria:~* Major patients under tutorship, curatorship or safeguard of justice~* Cognitive disorders possibly related to a metabolic or psychiatric cause~* History of prescription of antibiotic treatment in the last month~* History of acute gastrointestinal illness in the last month~* History of hospitalization for an acute medical pathology or for a surgical procedure in the last month

- Gender: ALL
- Minimum Age: 70 Years
- Maximum Age: 90 Years
- Healthy Volunteers: f

Study Arms:
- Alzheimer with rapid DCR (Type: EXPERIMENTAL): None
- Alzheimer without rapid DCR (Type: EXPERIMENTAL): None
- Control (Type: SHAM_COMPARATOR): None

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