# Effect of Isoniazid on Protoporphyrin Levels in Erythropoietic Protoporphyria

> **NCT01550705** · NA · TERMINATED · sponsor: **University of Utah** · enrollment: 11 (actual)

## Conditions studied

- Erythropoietic Protoporphyria (EPP)
- X Linked Erythropoietic Protoporphyria

## Interventions

- **DRUG:** Isoniazid

## Key facts

- **NCT ID:** NCT01550705
- **Lead sponsor:** University of Utah
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2012-03
- **Primary completion:** 2015-12
- **Final completion:** 2015-12
- **Target enrollment:** 11 (ACTUAL)
- **Why stopped:** Interim analysis demonstrated the treatment was not effective
- **Last updated:** 2017-01-16

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01550705

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01550705, "Effect of Isoniazid on Protoporphyrin Levels in Erythropoietic Protoporphyria". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT01550705. Licensed CC0.

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