# Optimization of Collection Methods for Studies of the Human Microbiota

> **NCT03731702** · — · WITHDRAWN · sponsor: **National Cancer Institute (NCI)**

## Conditions studied

- Microbial Composition

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT03731702
- **Lead sponsor:** National Cancer Institute (NCI)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** WITHDRAWN
- **Start date:** 2018-11-01
- **Primary completion:** 2020-10-27
- **Final completion:** 2020-10-27
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Deemed not human subjects research
- **Last updated:** 2020-10-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03731702

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03731702, "Optimization of Collection Methods for Studies of the Human Microbiota". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT03731702. Licensed CC0.

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