A Phase 1/2 Study of VX-670 in Adult Participants With Myotonic Dystrophy 1 (DM1)

Purpose

The purpose of the study is to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of VX-670 at different single and multiple doses in participants with DM1.

Condition

  • Myotonic Dystrophy Type 1 (DM1)

Eligibility

Eligible Ages
Between 18 Years and 64 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Documented clinical diagnosis of DM1 with age of onset greater than (>) 1 year of age and documented positive genetic test for DM1 in the subject with cytosine thymine guanine (CTG) repeat of at least 100

Exclusion Criteria

  • History of any illness or any clinical condition as pre-specified in the protocol Other protocol defined Inclusion/Exclusion criteria may apply.

Study Design

Phase
Phase 1/Phase 2
Study Type
Interventional
Allocation
Randomized
Intervention Model
Sequential Assignment
Primary Purpose
Treatment
Masking
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Part A: Single Ascending Dose
Participants will be randomized to receive a single dose of different dose levels of VX-670.
  • Drug: VX-670
    Solution for intravenous administration.
Placebo Comparator
Part A: Placebo
Participants will be randomized to receive single dose of placebo matched to VX-670.
  • Drug: Placebo
    Solution for intravenous administration.
Experimental
Part B: Single and Multiple Ascending Dose
Participants will be randomized to receive single and multiple doses of different dose levels of VX-670. The dose levels will be determined based on the data from Part A.
  • Drug: VX-670
    Solution for intravenous administration.
Placebo Comparator
Part B: Placebo
Participants will be randomized to receive single or multiple doses of placebo matched to VX-670.
  • Drug: Placebo
    Solution for intravenous administration.

Recruiting Locations

University of Kansas Medical Center
Fairway, Kansas 66205

More Details

Status
Recruiting
Sponsor
Vertex Pharmaceuticals Incorporated

Study Contact

Medical Information
617-341-6777
medicalinfo@vrtx.com