# Observational Study of Males With Creatine Transporter Deficiency

> **NCT02931682** · — · TERMINATED · sponsor: **Ultragenyx Pharmaceutical Inc** · enrollment: 50 (actual)

## Conditions studied

- Creatine Deficiency, X-linked

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT02931682
- **Lead sponsor:** Ultragenyx Pharmaceutical Inc
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** TERMINATED
- **Start date:** 2016-12
- **Primary completion:** 2022-10-24
- **Final completion:** 2022-10-24
- **Target enrollment:** 50 (ACTUAL)
- **Why stopped:** Sponsor decision not related to safety concerns
- **Last updated:** 2022-11-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02931682

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02931682, "Observational Study of Males With Creatine Transporter Deficiency". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT02931682. Licensed CC0.

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