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Completed

NCT Number: NCT05134571

China Post-marketing Surveillance (PMS) Study of Aldurazyme®

This is a single treatment arm study that is open-label to be conducted in Chinese participants with MPS I.

Trial Objectives are to evaluate the safety and tolerability of Aldurazyme in Chinese MPS I participants, and to evaluate the efficacy of Aldurazyme on the percent change of urinary glycosaminoglycans (uGAGs) from baseline to Week 26. The study will also evaluate the effect on uGAG level and liver volume (hepatomegaly) after 26 weeks, with Aldurazyme treatment in Chinese MPS I participants.

Treatment duration will include: 2 weeks of screening, 26 weeks of treatment and 1 week of follow-up period. During the treatment period, weekly visits are designed to accommodate weekly administration of Aldurazyme (laronidase).

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Key information

Age range

5 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Investigational Site Number :1560002, Beijing, China

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About this study

Study duration for each participant will be a total of 29 weeks which will include 2 weeks of screening, 26 weeks of treatment period and 1 week of follow-up period.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Chinese participants have a documented diagnosis of MPS I confirmed by measurable clinical signs and symptoms of MPS I and fibroblast or leukocyte IDUA (iduronidase) activity <10% of normal.
  • Participants have to be able to stand independently and walk a minimum of 5 meters in 6 minutes.
  • A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least one of the following conditions applies:
  • Is not a woman of childbearing potential (WOCBP).
  • OR
  • Is a WOCBP and agrees to use an acceptable contraceptive method during the intervention period and at a minimum until 7 days after the last dose of study intervention.
  • A WOCBP must have a negative highly sensitive pregnancy test (urine or serum as required by local regulations) within the screening period before the first dose of study intervention.
  • If a urine test cannot be confirmed as negative (eg, an ambiguous result), a serum pregnancy test is required. In such cases, the participant must be excluded from participation if the serum pregnancy result is positive.
  • Contraceptive/barrier method is not applicable for male participants.

Exclusion criteria

  • Prior tracheostomy or bone marrow transplantation or hematopoietic stem cell transplantation.
  • Have a plan to undergo bone marrow transplantation or hematopoietic stem cell transplantation within half a year after enrollment.
  • Received an investigational drug, or device, other than Aldurazyme, within 30 days prior to study enrollment.
  • Received an investigational gene therapy.

The above information is not intended to contain all considerations relevant to a potential participation in a clinical trial.

Treatment and study plan

laronidase

Drug

Solution for injection; Intravenous

Primary outcomes

  1. Participants with adverse events (AEs)

    Time frame: Baseline to Week 27

    Incidence of AEs, serious adverse events (SAEs) and adverse events of special interest (AESIs) including infusion associated reactions (IARs) during the treatment emergent (TE) period

  2. The incidence of Potentially clinically significant abnormality (PCSA) analyses for clinical laboratory, vital signs, and ECG parameters during the TE period

    Time frame: Baseline to Week 27

  3. The percent change of uGAGs

    Time frame: Baseline to Week 26

Secondary outcomes

  1. The percent change of uGAGs

    Time frame: Baseline to Week 2, Week 4, Week 8, Week 12 and Week 20

  2. The absolute change of uGAGs

    Time frame: Baseline to Week 2, Week 4, Week 8, Week 12, Week 20 and Week 26

  3. The percent change of liver volume (Abdominal B type ultrasound examination)

    Time frame: Baseline to Week 26

Sponsors and collaborators

Lead sponsor

Genzyme, a Sanofi Company

Industry

Registry information

Official study title

A Phase 4, Single-arm, Open-label Safety and Efficacy Study of Aldurazyme® (Laronidase) as Enzyme Replacement Therapy in Participants With Mucopolysaccharidosis I (MPS I) in China

Important dates

Study start
2021
Primary completion
2023
Study completion
2023
First posted
Nov 26, 2021
Registry last updated
Sep 17, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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