Please assess the completion status of the following clinical trial:

Trial Title: Velphoro and Impact on the Oral Cavity and Gut Microbiome

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CONTROL
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Suffering from hyperphosphatemia~* Current treatment with a stable dose of a non-iron containing phosphate binder,~* No or only parenteral iron application~* Age of ≥ 18 years~* Written informed consent prior to study participation~* The subject is willing and able to follow the procedures outlined in the protocol~Control group:~* Normal renal function~* No hyperphosphatemia~* Age- and sex-matched and oral disease status-matched (dental caries and periodontal disease) in comparison to the hyperphosphatemia group~* Written informed consent prior to study participation~* The subject is willing and able to follow the procedures outlined in the protocol~Exclusion Criteria:~* Age less than 18 years~* Currently on oral iron application~* Antibiotic treatment within the last two months~* Severe medical events within the last three months~* Planned surgery for the duration of the sampling~* Acute/chronic gastrointestinal infections~* Smokers~* Oral candidiasis~* Oral cancer~* Pregnant and lactating females~* Haemochromatosis history~* Committed to an institution by legal or regulatory order~* Participation in a parallel interventional clinical trial~* Receipt of an investigational drug within 30 days prior to inclusion into this study~* The subject is mentally or legally incapacitated~Only for the patient group:~* Never got any phosphate binder~* Allergy to Velphoro®~* Celiac disease or any other chronic inflammatory bowel disease~* Previous major surgery in the gastrointestinal tract

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- hemodialysis patients with hyperphosphatemia (Type: None): * dental investigation and two sample collections of saliva, gingival biofilm (plaque) and stool~* Velphoro® medication
- control group (Type: None): - dental investigation and two sample collections of saliva, gingival biofilm (plaque) and stool

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