# Questionnaire Follow=up Study Sonia 2

> **NCT04510142** · — · COMPLETED · sponsor: **Liverpool University Hospitals NHS Foundation Trust** · enrollment: 24 (actual)

## Conditions studied

- Alkaptonuria
- Homogentisic Acid
- Homogentisate Dioxygenase
- Alkaptonuria Severity Score Index

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04510142
- **Lead sponsor:** Liverpool University Hospitals NHS Foundation Trust
- **Sponsor class:** OTHER_GOV
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2019-09-19
- **Primary completion:** 2023-08-31
- **Final completion:** 2023-08-31
- **Target enrollment:** 24 (ACTUAL)
- **Last updated:** 2025-03-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04510142

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04510142, "Questionnaire Follow=up Study Sonia 2". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04510142. Licensed CC0.

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