# Evaluating the Prevalence of Acute Hepatic Porphyria in Postural Tachycardia Syndrome

> **NCT05344599** · — · ACTIVE_NOT_RECRUITING · sponsor: **Vanderbilt University Medical Center** · enrollment: 70 (actual)

## Conditions studied

- Postural Orthostatic Tachycardia Syndrome
- Acute Hepatic Porphyria

## Interventions

- **DIAGNOSTIC_TEST:** Autonomic Function Testing
- **DIAGNOSTIC_TEST:** Genetic Testing
- **DIAGNOSTIC_TEST:** Urine Testing
- **DIAGNOSTIC_TEST:** Blood laboratory Testing

## Key facts

- **NCT ID:** NCT05344599
- **Lead sponsor:** Vanderbilt University Medical Center
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2022-01-19
- **Primary completion:** 2024-12-30
- **Final completion:** 2026-06-30
- **Target enrollment:** 70 (ACTUAL)
- **Last updated:** 2026-01-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05344599

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05344599, "Evaluating the Prevalence of Acute Hepatic Porphyria in Postural Tachycardia Syndrome". Retrieved via AI Analytics 2026-07-16 from https://api.ai-analytics.org/clinical/NCT05344599. Licensed CC0.

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