CClinicalTrials.gg
WithdrawnNCT07221513RENEU-PHUpdated May 15, 2026

Study of JK07 in Patients With Heart Failure and WHO Group 2 Combined Post- and Pre-Capillary Pulmonary Hypertension

A Phase 2 interventional study of JK07 in HFrEF - Heart Failure With Reduced Ejection Fraction, HFpEF - Heart Failure With Preserved Ejection Fraction and Group 2 Pulmonary Hypertension, sponsored by Salubris Biotherapeutics Inc. Withdrawn at 1 site in United States. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2026-05-15.

Sponsored by Salubris Biotherapeutics Inc · Phase 2, Interventional, and Treatment

Why this study was withdrawn
Sponsor decision
Phase
Phase 2
Study type
Interventional
Enrollment
0
Allocation
Not applicable
Ages
18 Years to 85 Years
Sex
All
01

Study summary

This is a Phase 2a, open-label, multiple-dose study to assess the safety, tolerability, and efficacy of JK07 in participants 18 to 85 years of age with diagnosed HF and cpcPH.

At least 20 and up to approximately 30 participants will be enrolled and receive JK07 high dose in this open-label trial.

02

Conditions studied

  • HFrEF - Heart Failure With Reduced Ejection Fraction
  • HFpEF - Heart Failure With Preserved Ejection Fraction
  • Group 2 Pulmonary Hypertension

Keywords

  • Heart Failure
  • Heart Failure with Reduced Ejection Fraction
  • HFrEF
  • HFpEF
  • Heart Failure with Preserved Ejection Fraction
  • Group 2 Pulmonary Hypertension
  • Pulmonary Hypertension
  • cpcPH
  • Heart Failure NYHA Class III
  • Heart Failure NYHA Class II
  • Systolic Heart Failure
  • Diastolic Heart Failure
  • Neuregulin 1
  • NRG-1
  • ErbB4
  • HER3
  • HER4
03

In context

Heart Failure

5,701 studies on the registry are indexed under Heart Failure; 1,220 are open to participants now.

Browse Heart Failure studies →

Lead sponsor

Salubris Biotherapeutics Inc is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • Participants with HF New York Heart Association Class II-III.
  • Participants will be classified as having HFrEF (LVEF ≤ 40%) or HFpEF (LVEF >40% and ≤70%).
  • Right heart catheterization (RHC) based evidence of cpcPH:
  • PVR ≥2.5 WU; AND
  • mPAP ≥25 mmHg; AND
  • PAWP ≥16 mmHg

Key Exclusion Criteria:

  • Diagnosis of PH in World Health Organization (WHO) Group 1, WHO Group 3, WHO Group 4, or WHO Group 5.
  • Contraindicated to RHC that can be left in place for approximately 6 hours.
  • A diagnosis of pre-existing lung disease including congenital abnormalities, full or partial pneumonectomy, or previous therapeutic radiation of lungs or mediastinum.
  • Body mass index (BMI) >45 kg/m² at screening.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    JK07 high dose

    JK07 administered by intravenous (IV) infusion

    Drug: JK07

Interventions

  • DrugJK07

    JK07 is a fully human anti-human epidermal growth factor receptor 3 (also known as ErbB3 or HER3) antibody fused with the epidermal growth factor (EGF)-domain of Neuregulin (NRG)-1b protein.

06

What researchers measure

Primary outcomes

  1. Incidence and severity of TEAEs [Safety and tolerability]

    Incidence and severity of treatment emergent adverse events

    Time frame: Study entry through week 26

Secondary outcomes

  1. Pharmacokinetic - Cmax

    Characterize the JK07 PK profile through Peak Plasma Concentration (Cmax) following IV administration

    Time frame: Study entry through week 26

  2. Pharmacokinetics - Tmax

    Characterize the JK07 PK profile through Time to Peak Plasma Concentration (Tmax) following IV administration

    Time frame: Study entry through week 26

  3. Pharmacokinetics - AUC0-last

    Characterize the JK07 PK profile through area under the concentration-time curve from time 0 to last quantifiable concentration (AUC0-last) following IV administration

    Time frame: Study entry through week 26

  4. Pharmacokinetics - AUC0-inf

    Characterize the JK07 PK profile through area under the concentration-time curve from time 0 to infinity (AUC0-inf) following IV administration

    Time frame: Study entry through week 26

  5. Pharmacokinetics - t1/2

    Characterize the JK07 PK profile through half-life (t1/2) following IV administration

    Time frame: Study entry through week 26

  6. Pharmacokinetics - λz

    Characterize the JK07 PK profile through elimination rate constant (λz) following IV administration

    Time frame: Study entry through week 26

  7. Pharmacokinetics - CL

    Characterize the JK07 PK profile through systemic clearance (CL) following IV administration

    Time frame: Study entry through week 26

  8. Pharmacokinetics - Vz

    Characterize the JK07 PK profile through volume of distribution (Vz) following IV administration

    Time frame: Study entry through week 26

07

Study locations

1 site
  • Saint Francis Heart and Vascular Institute
    Tulsa, Oklahoma 74136, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 15, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07221513
Lead sponsor
Salubris Biotherapeutics Inc
Responsible party
Sponsor
First posted
Oct 28, 2025
Start date
Dec 15, 2025
Primary completion
Apr 16, 2026
Completion
Apr 16, 2026
Last update
May 15, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in May 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion