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Completed Phase 3 Interventional Results available

APOLLO-B: A Study to Evaluate Patisiran in Participants With Transthyretin Amyloidosis With Cardiomyopathy (ATTR Amyloidosis With Cardiomyopathy)

ClinicalTrials.gov ID: NCT03997383

Public ClinicalTrials.gov record NCT03997383. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 1:32 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

APOLLO-B: A Phase 3, Randomized, Double-blind, Placebo-controlled Multicenter Study to Evaluate the Efficacy and Safety of Patisiran in Patients With Transthyretin Amyloidosis With Cardiomyopathy (ATTR Amyloidosis With Cardiomyopathy)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this study is to evaluate the efficacy and safety of patisiran in participants with ATTR amyloidosis with cardiomyopathy.

Study identification

NCT ID
NCT03997383
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Alnylam Pharmaceuticals
Industry
Enrollment
360 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 85 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Sep 4, 2019 (Actual)
Primary completion
Jun 20, 2022 (Actual)
Completion
Dec 24, 2025 (Actual)
Last update posted
Apr 20, 2026

2019 – 2025

United States locations

U.S. sites
19
U.S. states
14
U.S. cities
17
Facility City State ZIP Site status
Clinical Trial Site Los Angeles California 90048 —
Clinical Trial Site Chicago Illinois 60637 —
Clinical Trial Site Skokie Illinois 60076 —
Clinical Trial Site Iowa City Iowa 52242 —
Clinical Trial Site Kansas City Kansas 66160 —
Clinical Trial Site Baltimore Maryland 21224 —
Clinical Trial Site Boston Massachusetts 02118 —
Clinical Trial Site Burlington Massachusetts 10805 —
Clinical Trial Site Rochester Minnesota 55905 —
Clinical Trial Site St Louis Missouri 63110 —
Clinical Trial Site New York New York 10029 —
Clinical Trial Site New York New York 10032 —
Clinical Trial Site Cleveland Ohio 44195 —
Clinical Trial Site Philadelphia Pennsylvania 19104 —
Clinical Trial Site Philadelphia Pennsylvania 19140 —
Clinical Trial Site Pittsburgh Pennsylvania 15212 —
Clinical Trial Site Nashville Tennessee 37232 —
Clinical Trial Site Dallas Texas 75246 —
Clinical Trial Site Norfolk Virginia 23507 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 71 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03997383, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Apr 20, 2026 · Synced Oct 21, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03997383 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →