# Male Reproduction COVID Sequelae Study (MARCOS).

> **NCT04665258** · — · WITHDRAWN · sponsor: **University of Miami**

## Conditions studied

- Infertility, Male

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04665258
- **Lead sponsor:** University of Miami
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** WITHDRAWN
- **Start date:** 2020-12-14
- **Primary completion:** 2023-11-28
- **Final completion:** 2023-11-28
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Unable to recruit participants
- **Last updated:** 2023-12-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04665258

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04665258, "Male Reproduction COVID Sequelae Study (MARCOS).". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT04665258. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*