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Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study of MRM-3379 in Male Participants with Fragile X Syndrome

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2025-523738-21-00
Enrollment
15
Registered
2026-04-27
Start date
Unknown
Completion date
Unknown
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

​​Fragile X Syndrome​

Brief summary

To evaluate the safety and tolerability of MRM-3379 in male participants with FXS on the bases of the following endpoints: -Incidence and severity of TEAEs; - Withdrawal due to AEs.

Detailed description

To evaluate the preliminary efficacy of MRM-3379 in male participants with FXS on the basis of the following endpoints: - Key secondary endpoint: Change from baseline on the NIH-TCB Crystallized Cognition Composite (CCC): Composed from the Picture Vocabulary Test (PVT) and Oral Reading Recognition Test (ORRT) change sensitive scores; - Other secondary endpoint: Clinician Global Impression-Change (CGI-C) score, To describe the PK properties of MRM-3379 on the basis of the following endpoint: Steady-state MRM-3379 and metabolite plasma concentrations

Interventions

DRUGPlacebo for MRM-3379
DRUGMRM-3379

Sponsors

Mirum Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
Male
Age
0 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
To evaluate the safety and tolerability of MRM-3379 in male participants with FXS on the bases of the following endpoints: -Incidence and severity of TEAEs; - Withdrawal due to AEs.

Secondary

MeasureTime frame
To evaluate the preliminary efficacy of MRM-3379 in male participants with FXS on the basis of the following endpoints: - Key secondary endpoint: Change from baseline on the NIH-TCB Crystallized Cognition Composite (CCC): Composed from the Picture Vocabulary Test (PVT) and Oral Reading Recognition Test (ORRT) change sensitive scores; - Other secondary endpoint: Clinician Global Impression-Change (CGI-C) score, To describe the PK properties of MRM-3379 on the basis of the following endpoint: Steady-state MRM-3379 and metabolite plasma concentrations

Outcome results

None listed

Source: EU CTIS · Data processed: Apr 28, 2026