Purpose

The primary objective of this study is to access the efficacy of ALXN2220 in the treatment of adult participants with ATTR-CM by evaluating the difference between the ALXN2220 and placebo groups as assessed by the total occurrences of ACM and CV clinical events.

Condition

Eligibility

Eligible Ages
Between 18 Years and 90 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Centrally confirmed diagnosis of ATTR-CM with either wild-type or variant TTR genotype - End-diastolic interventricular septal wall thickness ≥ 11 mm for women or ≥ 12 mm for men on echocardiography measured at Screening - NT-proBNP > 2000 pg/mL at Screening - Treatment with a loop diuretic for at least 30 days prior to Screening - History of heart failure NYHA Class II-IV at Screening - Life expectancy of ≥ 6 months as per the Investigator's judgment - Males and females of childbearing ability must use contraception

Exclusion Criteria

  • Known leptomeningeal amyloidosis - Known light chain (AL) or secondary amyloidosis (AA), or any other form of systemic amyloidosis - Acute coronary syndrome, unstable angina, stroke, transient ischemic attack, coronary revascularization, cardiac device implantation, cardiac valve repair, or major surgery within 3 months of Screening - Uncontrolled clinically significant cardiac arrhythmia, per Investigator's assessment - LVEF < 30% on echocardiography - Renal failure requiring dialysis or an eGFR < 20 mL/min/1.73 m2 at Screening - Polyneuropathy with PND score IV

Study Design

Phase
Phase 3
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
ALXN2220
Participants will receive weight-based dose of ALXN2220 via intravenous (IV) infusion every 4 weeks (q4w) for at least 24 months up to a maximum of 48 months.
  • Drug: ALXN2220
    Participants will receive ALXN2220 via IV infusion.
Placebo Comparator
Placebo
Participants will receive placebo via IV infusion q4w for at least 24 months up to a maximum of 48 months.
  • Drug: Placebo
    Participants will receive placebo via IV infusion.

Recruiting Locations

Research Site
Nashville, Tennessee 37232

More Details

Status
Recruiting
Sponsor
Alexion Pharmaceuticals, Inc.

Study Contact

Alexion Pharmaceuticals, Inc. (Sponsor)
1-855-752-2356
clinicaltrials@alexion.com

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.