> ## Documentation Index
> Fetch the complete documentation index at: https://glossary.micahealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Unknown

A recruitment status indicating that a clinical study's last known state was recruiting, not yet recruiting, or active but no longer recruiting, and its current status has not been confirmed within the past two years, leading to its classification as a closed study.

[*Source*](https://clinicaltrials.gov/study-basics/glossary)