Study of MRM-3379 in Male Participants With Fragile X Syndrome (BLOOM)

Trial statusRecruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexMale
Age13-45
SponsorMirum Pharmaceuticals, Inc.

About this trial

This study is a multicenter, double-blind, randomized, placebo-controlled study to assess the safety and tolerability of 3 doses of MRM-3379 in male participants with Fragile X Syndrome ages 16 to 45 (inclusive). In addition, a parallel cohort of participants ages 13 to \<16 will receive open-label MRM-3379. All participants will participate for 12 weeks of treatment. The study is also intended as a proof-of-concept investigation to evaluate whether MRM-3379 can improve FXS symptoms

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Willing and able to provide signed informed consent/assent. Where local regulations permit inclusion of participants deemed unable to provide informed consent, a legally authorized representative must provide informed consent on the participant's behalf, and the participant must provide assent if applicable.

Male, 13-45 years of age (inclusive)

Weight ≥30 kg and BMI between 18 and 36 kg/m2 (inclusive) at the screening visit

Diagnosis of FXS with a molecular genetic ≥200 CGG repetitions .

Disqualifiers

None

Trial design

Design model

Parallel

Treatments tested in this trial

  • Low dose of MRM-3379

    Drug

    Oral capsule

  • Middle Dose of MRM-3379

    Drug

    Oral capsule

  • High dose of MRM-3379

    Drug

    Oral capsule

  • Placebo

    Drug

    Capsules matched to study drug without the active pharmaceutical ingredient

  • Low dose of MRM-3379 Open-Label

    Drug

    Oral capsule

Treatment groups

60 Participants
are divided into 5 treatment groups
Group A: Arm 1: Low Dose of MRM-3379Experimental treatment 1 intervention
Group B: Arm 2: Middle dose of MRM-3379Experimental treatment 1 intervention
Group C: Arm 3: High dose of MRM-3379Experimental treatment 1 intervention
Group D: Arm 4 :PlaceboPlacebo comparator 1 intervention
Group E: Arm 5: Low dose of MRM-3379 Open-LabelExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Incidence and severity of treatment-emergent adverse events and Withdrawal due to adverse events and withdrawal due to adverse events

Time frame
Baseline to Week 12

Secondary outcomes

Other outcomes

Sponsors and contacts

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