# One Versus Two Unit Transfusions in Oncology Patients - The OTTOP Trial: A Randomized Open-label Pragmatic Controlled Trial

> **NCT04544540** · NA · UNKNOWN · sponsor: **Ottawa Hospital Research Institute** · enrollment: 450 (estimated)

## Conditions studied

- Anemia
- Oncology

## Interventions

- **OTHER:** Units of transfusion

## Key facts

- **NCT ID:** NCT04544540
- **Lead sponsor:** Ottawa Hospital Research Institute
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-11-01
- **Primary completion:** 2023-11-01
- **Final completion:** 2024-12-01
- **Target enrollment:** 450 (ESTIMATED)
- **Last updated:** 2020-09-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04544540

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04544540, "One Versus Two Unit Transfusions in Oncology Patients - The OTTOP Trial: A Randomized Open-label Pragmatic Controlled Trial". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT04544540. Licensed CC0.

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