Study of BBP-418 in Patients With LGMD2I

An Open Label Phase 2 Study of BBP-418 in Patients With Limb Girdle Muscular Dystrophy Type 2I (MLB-01-003)

BBP-418 is being developed for the treatment of patients with Limb-Girdle Muscular Dystrophy Type 2I (LGMD2I). This is an open label study to determine the safety and tolerability of ascending dose levels of BBP-418 in the treatment of ambulatory and non-ambulatory patients with LGMD2I for which no approved therapy currently exists.

Study Overview

• Status: Active, not recruiting
• Conditions: LGMD2I
• Intervention / Treatment: Drug: BBP-418

Detailed Description

This is an open label study in ambulatory and non-ambulatory subjects with LGMD2I (also known as LGMD R9) previously enrolled in the natural history Study MLB-01-001. This is a study to determine the safety and tolerability of ascending dose levels of BBP-418 in those subjects.

• Study Type: Interventional
• Enrollment (Actual): 14
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • Virginia
    • Richmond, Virginia, United States, 23219
      • Virginia Commonwealth University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 12 years to 55 years (Child, Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Have a body weight >30 kg
• Have a genetically confirmed diagnosis of LGMD2I and be clinically affected (defined as demonstrating clinical weakness on bedside evaluation in either a limb-girdle pattern, or in a distal extremity)
• Able to complete the 10-meter walk test in ≤ 12 seconds unaided ("moderate disease") or are with "severe disease"/non-ambulatory as defined by being unable to complete the 10-meter walk unaided in >12 seconds
• Willing to use an adequate method of contraception from time of consent through 12 weeks after last dose
• Previous enrolment in the Natural History study MLB-01-001

Exclusion Criteria:

• Evidence of clinically significant concomitant disease, including:

  • Any history of a gastrointestinal condition, including surgeries, which may affect absorption after oral administration
  • Any significant concomitant medical condition, including cardiac, pulmonary, renal, hepatic or endocrine disease other than that associated with LGMD2I
  • Any condition other than LGMD2I requiring therapy with prescription medicine (medication for common and mild concomitant conditions may be permitted after consultation with the PI)
  • Any other laboratory, vital sign, ECG abnormality, or clinical history or finding that, in the investigator's opinion, is likely to unfavorably alter the risk-benefit of study participation, confound study results, or interfere with study conduct or compliance
• If pregnant and/or breastfeeding or planning to conceive children within the projected duration of the study through 12 weeks after the last dose of study treatment.
• History of drug abuse including alcoholism within 2 years prior to consenting
• Use of ribose or other sugar alcohol-containing supplement within 60 days of Day 1
• Use of a corticosteroid within 60 days of Day 1
• Presence of a platelet disorder, bleeding disorder or other contraindication to muscle biopsy
• Actively on an experimental therapy or device or was on an experimental therapy or device within 60 days prior to Day 1.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Cohort 1; Subjects will receive 6 grams of BBP-418 once daily x 90 days, then 12 grams twice daily (BID, a least 8 hours apart) of BBP-418 daily until study completion.	Drug: BBP-418; BBP-418 is being developed for the treatment of patients with Limb-Girdle Muscular Dystrophy Type 2I (LGMD2I) for which no approved therapy currently exists. It targets the molecular defect at the source by supplying excess substrate to the mutant enzyme thus boosting glycosylation of muscle α-dystroglycan. The BBP-418 drug product will be packaged in sachets and provided in a carton for in-clinic and at home use.
Experimental: Cohort 2; Subjects will receive 6 grams of BBP-418 twice daily (BID, at least 8 hours apart) x 90 days, then 12 grams BID of BBP-418 daily until study completion.	Drug: BBP-418; BBP-418 is being developed for the treatment of patients with Limb-Girdle Muscular Dystrophy Type 2I (LGMD2I) for which no approved therapy currently exists. It targets the molecular defect at the source by supplying excess substrate to the mutant enzyme thus boosting glycosylation of muscle α-dystroglycan. The BBP-418 drug product will be packaged in sachets and provided in a carton for in-clinic and at home use.
Experimental: Cohort 3; Subjects will receive 12 grams of BBP-418 twice daily (BID, at least 8 hours apart) x 90 days, then 12 grams BID of BBP-418 daily until study completion.	Drug: BBP-418; BBP-418 is being developed for the treatment of patients with Limb-Girdle Muscular Dystrophy Type 2I (LGMD2I) for which no approved therapy currently exists. It targets the molecular defect at the source by supplying excess substrate to the mutant enzyme thus boosting glycosylation of muscle α-dystroglycan. The BBP-418 drug product will be packaged in sachets and provided in a carton for in-clinic and at home use.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Incidence of treatment-emergent adverse events (TEAEs) that lead to dose decrease or discontinuation	60 months

Secondary Outcome Measures

Outcome Measure	Time Frame
Pharmacokinetic profile of BBP-418 by assessment of maximum concentration (Cmax)	24 months
Changes in pharmacodynamic parameters by assessing changes in levels of N-terminal fragment of alpha dystroglycan (α-DG)	24 months
Changes in pharmacodynamic parameters by assessing muscle biopsy of the tibialis anterior	24 months
Pharmacokinetic profile of BBP-418 by assessment of area under the curve (AUC)	24 months

Collaborators and Investigators

• Sponsor: ML Bio Solutions, Inc.
• Investigators: Principal Investigator: Amy Harper, MD, Virginia Commonwealth University

Study record dates

Study Major Dates

• Study Start (Actual): February 18, 2021
• Primary Completion (Estimated): November 1, 2026
• Study Completion (Estimated): November 1, 2026

Study Registration Dates

• First Submitted: January 25, 2021
• First Submitted That Met QC Criteria: March 14, 2021
• First Posted (Actual): March 16, 2021

Study Record Updates

• Last Update Posted (Actual): April 22, 2024
• Last Update Submitted That Met QC Criteria: April 18, 2024
• Last Verified: April 1, 2024

More Information

Terms related to this study

• Keywords: LGMD; Limb Girdle Muscular Dystrophy; LGMD R9
• Other Study ID Numbers: MLB-01-003

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No