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AZD3427

Phase 2

Pulmonary Hypertension (World Health Organization Group 2) | Small molecule | Cardiovascular |AstraZeneca PLC|Last Updated: Sep 24, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment260

FDA Designations

No designations recorded

Clinical trial landscape

AZD3427 · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT05737940A Study of AZD3427 in Participants With Heart Failure and Pulmonary Hypertension Group 2Pulmonary Hypertension (World Health Organization Group 2)
COMPLETED260 Analytics
PHASE2COMPLETED
A Study of AZD3427 in Participants With Heart Failure and Pulmonary Hypertension Group 2
Pulmonary Hypertension (World Health Organization Group 2)Unlock trial analytics

Study Endpoints

Primary Endpoints

Change from baseline in Pulmonary Vascular Resistance (PVR)
Baseline to Week 25

To evaluate the effect of AZD3427 on PVR parameter compared with placebo as measured by right heart catheterization (RHC) after 24 weeks of treatment in participants with HF and PH Group 2.

Number of Participants Experiencing Adverse Events and Serious Adverse Events
Part A: Day 1 until Day 50 or Early termination visit (E/T); Part B: Day 1 until Day 78 or E/T

Assessment of the safety and tolerability of single and multiple ascending doses of AZD3427.

Secondary Endpoints

Change from baseline in Mean pulmonary arterial pressure (mPAP)
Baseline to Week 25
Change from baseline in Pulmonary artery wedge pressure (PAWP)
Baseline to Week 25
Change from baseline in cardiac output
Baseline to Week 25
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
AZD3427 Dose AEXPERIMENTALThe participants will receive single dose of AZD3427 Dose A every 2 weeks for 24 weeks from Day 1 to Day 155.
AZD3427 Dose BEXPERIMENTALThe participants will receive single dose of AZD3427 Dose B every 2 weeks for 24 weeks from Day 1 to Day 155.
AZD3427 Dose CEXPERIMENTALThe participants will receive single dose of AZD3427 Dose C every 2 weeks for 24 weeks from Day 1 to Day 155.
PlaceboPLACEBO_COMPARATORThe participants will receive single dose of placebo every 2 weeks for 24 weeks from Day 1 to Day 155.
AZD3427: Cohort 1aEXPERIMENTALParticipants will receive single SC dose A of AZD3427 on Day 1.
AZD3427: Cohort 2aEXPERIMENTALParticipants will receive single SC dose B of AZD3427 on Day 1.
AZD3427: Cohort 3aEXPERIMENTALParticipants will receive single SC dose C of AZD3427 on Day 1.
AZD3427: Cohort 4aEXPERIMENTALParticipants will receive single SC dose D of AZD3427 on Day 1.
AZD3427: Cohort 5aEXPERIMENTALParticipants will receive single IV dose E of AZD3427 on Day 1.
AZD3427: Cohort 6aEXPERIMENTALParticipants of Japanese descent will receive single SC dose anticipated equal to the highest dose of AZD3427 in the global cohorts on Day 1.
AZD3427: Cohort 7aEXPERIMENTALParticipants will receive single SC dose F of AZD3427 on Day 1
Part A: PlaceboPLACEBO_COMPARATORParticipants will receive single SC or IV dose of placebo matched to AZD3427 on Day 1.
AZD3427: Cohort 1bEXPERIMENTALParticipants with HFrEF will receive SC dose A of AZD3427 on Days 1, 8, 15, 22, and 29.
AZD3427: Cohort 2bEXPERIMENTALParticipants with HF with EF ≥ 41% will receive SC dose A of AZD3427 on Days 1, 8, 15, 22, and 29.
AZD3427: Cohort 3bEXPERIMENTALParticipants with HFrEF will receive SC dose B of AZD3427 on Days 1, 8, 15, 22, and 29.
AZD3427: Cohort 4bEXPERIMENTALParticipants with HF with EF ≥ 41% will receive SC dose B of AZD3427 on Days 1, 8, 15, 22, and 29.
AZD3427: Cohort 5bEXPERIMENTALParticipants with HFrEF will receive SC dose C of AZD3427 on Days 1, 8, 15, 22, and 29.
AZD3427: Cohort 6bEXPERIMENTALParticipants with HF with EF ≥ 41% will receive SC dose C of AZD3427 on Days 1, 8, 15, 22, and 29.
Part B: PlaceboPLACEBO_COMPARATORParticipants with HFrEF or HF with EF ≥ 41% will receive SC dose of placebo matched to AZD3427 on Days 1, 8, 15, 22, and 29.

Interventions

NameTypeDescription
AZD3427DRUGThe participants will receive AZD3427 SC injection single dose of either Dose A or Dose B or Dose C every 2 weeks for 24 weeks.
PlaceboDRUGThe participants will receive SC injection of placebo single dose every 2 weeks for 24 weeks.
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Eligibility Criteria

Age Range18 Years to 130 Years
SexALL
Healthy VolunteersNo
Study Sites60

Inclusion criteria: 1. Participant must be ≥ 18 years of age inclusive. 2. Participants must have a pre-existing diagnosis of HF, NYHA function class (FC) II to IV, and a pre-existing diagnosis of PH-LHD or likely or intermediate probability of Pulmonary hypertension due to left heart disease (PH-L...

Countries:United StatesAustriaCanadaChinaCzechiaDenmarkGermanyItalyJapanNetherlandsPolandSpainSwedenUnited Kingdom
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Frequently asked questions about AZD3427

What is AZD3427 used for?

AZD3427 is an investigational small molecule being developed for pulmonary hypertension (World Health Organization Group 2) and heart failure. It is being studied in patients with heart failure and pulmonary hypertension Group 2, as well as in healthy volunteers for safety and pharmacokinetic assessments.

Who makes AZD3427?

AZD3427 is being developed by AstraZeneca PLC, a biopharmaceutical company traded on the NASDAQ under the ticker symbol AZN. The company is conducting clinical trials to evaluate the drug's safety, tolerability, immunogenicity, and pharmacokinetics in relevant patient populations.

What phase is AZD3427 in?

AZD3427 is in clinical development. A Phase 1 trial has been completed, and a Phase 2 trial in participants with heart failure and pulmonary hypertension Group 2 has also been completed. The drug remains investigational and is not yet approved by regulatory authorities.

What clinical trials is AZD3427 in?

AZD3427 has been studied in two completed clinical trials. NCT04630067 was a Phase 1 trial assessing safety, tolerability, immunogenicity, and pharmacokinetics in healthy volunteers. NCT05737940 was a Phase 2 trial in participants with heart failure and pulmonary hypertension Group 2, conducted across multiple countries.

Is AZD3427 FDA approved?

AZD3427 is not FDA approved. It is an investigational drug that has completed Phase 1 and Phase 2 clinical trials, but it remains in clinical development. No regulatory approval has been granted for this asset.