Observational Study of Adults and Adolescents With Erythropoietic Protoporphyria (EPP) and X-linked Porphyria (XLP)
Public ClinicalTrials.gov record NCT07567131. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Prospective Clinical Assessment Study in Adolescents and Adults With Erythropoietic Protoporphyria (EPP) and X-Linked Porphyria (XLP) (STEPP)
Study identification
- NCT ID
- NCT07567131
- Recruitment status
- Recruiting
- Study type
- Observational
- Phase
- Not listed
- Lead sponsor
- Portal Therapeutics, Inc.
- Industry
- Enrollment
- 50 participants
Conditions and interventions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 12 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 29, 2026
- Primary completion
- Feb 28, 2027
- Completion
- Mar 31, 2027
- Last update posted
- May 4, 2026
2026 – 2027
United States locations
- U.S. sites
- 5
- U.S. states
- 5
- U.S. cities
- 5
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Massachusetts General Hospital | Boston | Massachusetts | 02114 | Recruiting |
| Mount Sinai School of Medicine | New York | New York | 10029 | Recruiting |
| Wake Forest University Baptist Health - Dept of Gastroenterology | Wake Forest | North Carolina | 27587 | Recruiting |
| Temple University | Philadelphia | Pennsylvania | 19121 | Not yet recruiting |
| University of Texas Health - Ertan Digestive Disease Center | Houston | Texas | 77030 | Recruiting |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 14 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT07567131, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 4, 2026 · Synced Jun 26, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT07567131 live on ClinicalTrials.gov.