AzTrials
AzTrials

Essential HypertensionPhase 3NCT07116863

A Multicenter, Randomized, Double-Blind Phase 3 Trial of KDF1901 in Patients With Essential Hypertension

A Phase 3 study testing KDF1901-R0, KDF1901-L and KDF1901 in people with Essential Hypertension, run by Kyungdong Pharmaceutical Co., Ltd. at 2 sites in South Korea.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This randomized, double-blind, multicenter phase 3 clinical trial evaluated the efficacy and safety of KDF1901, a single-pill triple combination of valsartan, amlodipine, and chlorthalidone, in patients with essential hypertension inadequately controlled with dual therapy. Read more about this study

Who is it for?
Ages 19 years and older
Conditions the study is for
Essential Hypertension
What is being tested?
KDF1901-R0, KDF1901-L and KDF1901
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
286 participants
Where
2 sitesSouth Korea
Study dates
21 Jun 2022to 13 Sep 2024
Phase
Phase 3
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 19 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male or female participants aged ≥19 years at the time of screening.
  • Participants who meet one of the following blood pressure criteria at screening:
  • If not currently receiving antihypertensive medication for at least 4 weeks (treatment-naïve):
  • Mean Sitting Systolic Blood Pressure (MSSBP) ≥160 mmHg and <200 mmHg
  • If currently receiving antihypertensive medication:
  • MSSBP ≥140 mmHg and <200 mmHg
Show all 12Show fewer
  • For participants with cardiovascular disease, diabetes mellitus, or microalbuminuria (e.g., persistent proteinuria or hematuria), the range is:
  • MSSBP ≥130 mmHg and <200 mmHg
  • Willing and able to provide written informed consent prior to participation in the study.
  • At baseline (Visit 3), participants must have MSSBP ≥140 mmHg and <200 mmHg.
  • For participants with cardiovascular disease, diabetes mellitus, or microalbuminuria: MSSBP ≥130 mmHg and <200 mmHg
  • At least 70% compliance with run-in period medication, as assessed by tablet count.

Who cannot join

  • Mean sitting diastolic blood pressure (MSDBP) ≥110 mmHg at screening (Visit 1) or baseline (Visit 3)
  • Difference in blood pressure between arms: MSSBP ≥20 mmHg and MSDBP ≥10 mmHg at screening
  • History or presence of secondary hypertension or suspected secondary hypertension, including:
  • Aortic coarctation, pheochromocytoma, Cushing's syndrome, hyperaldosteronism, polycystic kidney disease
  • Severe pulmonary, cardiac, or vascular conditions, such as:
  • Pulmonary hypertension, severe heart failure (NYHA class III or IV), hypertrophic cardiomyopathy, aortic aneurysm, thrombocytopathy
Show all 42Show fewer
  • History of serious cardiovascular events or interventions within 24 weeks prior to screening:
  • Myocardial infarction, unstable angina, coronary revascularization (PCI/CABG)
  • History of cerebrovascular disorders within 24 weeks prior to screening:
  • Stroke, TIA, cerebral hemorrhage
  • History of ocular conditions within 24 weeks prior to screening:
  • Retinal hemorrhage, optic neuropathy, severe visual impairment
  • History of malignancy within 5 years prior to screening, except:
  • Successfully treated and in remission for ≥2 years, or
  • Basal cell carcinoma or squamous cell carcinoma of the skin
  • Hereditary blood disorders or history of angioedema related to ACE inhibitors or ARBs
  • History of galactose intolerance, Lapp lactase deficiency, or glucose-galactose malabsorption
  • Diagnosis of inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis) within 48 weeks prior to screening
  • Clinically significant conditions affecting drug absorption, distribution, metabolism, or excretion
  • Symptoms of orthostatic hypotension or risk of falls or syncope
  • Severe anemia, leukopenia, or thrombocytopenia at screening
  • Heart failure NYHA class III or IV
  • Known serious arrhythmias, including ventricular tachycardia or fibrillation
  • Known autoimmune disease or connective tissue disorder
  • Clinically significant renal, hepatic, or cardiovascular disease
  • eGFR <30 mL/min/1.73 m² or serum creatinine ≥2.0 mg/dL
  • ALT or AST >3× upper limit of normal (ULN)
  • Serum K+ <3.5 or >5.5 mmol/L, Na+ <135 mmol/L, Ca2+ >10.5 or <2.63 mmol/L
  • Requiring long-term immunosuppressive therapy or systemic corticosteroids
  • Clinically significant chronic inflammatory conditions
  • History of major surgery or active GI disorders
  • Type 2 diabetes mellitus with HbA1c ≥9.0%
  • Known edematous disorders (e.g., untreated nephrotic syndrome)
  • Requirement for prohibited medications (emergency drugs) during study period (Visit 1-6)
  • Use of lithium therapy
  • Use of terfenadine or astemizole
  • Hypersensitivity to study drugs, dihydropyridine-class CCBs, thiazide diuretics, or sulfonamides
  • History or suspicion of drug or alcohol abuse
  • Pregnancy or lactation
  • Women of childbearing potential or male participants not agreeing to use reliable contraception during study
  • Participation in other clinical trials or use of investigational products within 4 weeks prior to screening
  • Judged by the investigator to be otherwise unsuitable for study participation

Trial locations and contacts

2 sites in 1 country.

South Korea2 sites
  • CHA Gangnam Medical Center, CHA University

    Seoul

  • Seoul National University Hospital

    Seoul

Other trials in South Korea

About this study

Official title: A Randomized, Double-Blind, Multi-Center, Phase III Trial to Evaluate the Efficacy and Safety of KDF1901 in Patients With Essential Hypertension Inappropriately Controlled on KDF1901-R0 Treatment

This randomized, double-blind, multicenter phase 3 clinical trial evaluated the efficacy and safety of KDF1901, a single-pill triple combination of valsartan, amlodipine, and chlorthalidone, in patients with essential hypertension inadequately controlled with dual therapy. A total of 286 patients who remained uncontrolled after a 4-week run-in period with valsartan/amlodipine were randomized to receive either KDF1901 (valsartan/amlodipine/chlorthalidone 160/10/25 mg) or a dual combination of valsartan/amlodipine (160/10 mg) for 8 weeks.

The primary endpoint was the change in mean sitting systolic blood pressure (MSSBP) from baseline at week 8. Secondary outcomes included changes in diastolic BP (MSDBP), blood pressure normalization rate, and response rate. KDF1901 demonstrated significantly greater reductions in both MSSBP and MSDBP, with higher normalization and response rates compared to dual therapy. The treatment was well tolerated, and the incidence of adverse events was comparable between groups.

Read the detailed description

Achieving optimal blood pressure control remains a clinical challenge, especially in patients who do not respond adequately to dual antihypertensive therapy. This study assessed the clinical benefit of adding chlorthalidone to a fixed-dose combination of valsartan and amlodipine to form KDF1901, a triple combination therapy.

The study included 286 patients with essential hypertension who did not reach target blood pressure after a 4-week run-in period with valsartan/amlodipine (80/5 mg). They were randomized 1:1 to receive either KDF1901 (160/10/25 mg) or valsartan/amlodipine (160/10 mg) for 8 weeks.

At week 8, the KDF1901 group showed significantly greater reductions in MSSBP (-21.2 ± 9.3 mmHg vs. -15.4 ± 8.7 mmHg, p<0.001) and MSDBP (-12.2 ± 6.5 mmHg vs. -8.6 ± 6.2 mmHg, p<0.001) than the dual therapy group. Blood pressure normalization and response rates were also significantly higher with KDF1901.

Subgroup analyses revealed consistent efficacy in elderly and diabetic patients. The incidence of TEAEs was similar between groups, and most adverse events were mild and not drug-related. These results suggest the potential clinical utility of chlorthalidone-based triple therapy in high-risk hypertensive patients.

Being tested
KDF1901-R0, KDF1901-L, KDF1901, KDF1901-R1
Medical subject headings
Essential Hypertension

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • KDF1901-R0Drug

    Fixed-dose combination tablet containing valsartan 80 mg and amlodipine 5 mg. Orally administered once daily for 4 weeks during the run-in period, and for 2 weeks during Treatment Period 1(Dual Therapy group).

  • KDF1901-LDrug

    Fixed-dose combination tablet containing valsartan 80 mg, amlodipine 5 mg, and chlorthalidone 12.5 mg.

    Orally administered once daily for 2 weeks during Treatment Period 1.

  • KDF1901Drug

    Fixed-dose combination tablet containing valsartan 160 mg, amlodipine 10 mg, and chlorthalidone 25 mg.

    Orally administered once daily for 6 weeks during Treatment Period 2.

  • KDF1901-R1Drug

    Fixed-dose combination tablet containing valsartan 160 mg and amlodipine 10 mg. Orally administered once daily for 6 weeks during Treatment Period 2.

Study groups in NCT07116863
Study groupRoleWhat they receive
KDF1901 groupExperimentalRun-in Period (4 weeks): KDF1901-R0, a fixed-dose combination tablet containing valsartan 80 mg and amlodipine 5 mg, administered once daily Treatment Period 1 (2 weeks): KDF1901-L, containing valsartan 80 mg, amlodipine 5 mg, and chlorthalidone 12.5 mg, administered once daily Treatment Period 2 (6 weeks): KDF1901, containing valsartan 160 mg, amlodipine 10 mg, and chlorthalidone 25 mg, administered once daily
Receives: Drug: KDF1901-R0; Drug: KDF1901-L; Drug: KDF1901
Dual Therapy groupActive comparatorRun-in Period (4 weeks): KDF1901-R0, a fixed-dose combination tablet containing valsartan 80 mg and amlodipine 5 mg, administered once daily Treatment Period 1 (2 weeks): KDF1901-R0, same as above, administered once daily Treatment Period 2 (6 weeks): KDF1901-R1, containing valsartan 160 mg and amlodipine 10 mg, administered once daily
Receives: Drug: KDF1901-R0; Drug: KDF1901-R1

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Mean Sitting Systolic Blood Pressure (MSSBP) from baseline to Week 8

    Mean change in sitting systolic blood pressure (MSSBP) after 8 weeks of treatment, measured at trough using a validated automated device.

    Measured: Baseline to Week 8

Secondary outcomes (4)
  1. Change in Mean Sitting Systolic Blood Pressure (MSSBP) from baseline to Week 8

    Mean change in MSSBP after 2 and 4 weeks of treatment, compared to baseline.

    Measured: Baseline to Week 2 and Week 4

  2. Change in Mean Sitting Diastolic Blood Pressure (MSDBP) from baseline to Week 2, Week 4, and Week 8

    Mean change in MSDBP measured at trough using an automated device.

    Measured: Baseline to Week 2, Week 4, and Week 8

  3. Proportion of subjects achieving target blood pressure at Weeks 2, 4, and 8

    Proportion of subjects achieving MSSBP <140 mmHg and MSDBP <90 mmHg. For subjects with diabetes mellitus, target BP is MSSBP <130 mmHg and MSDBP <80 mmHg.

    Measured: Week 2, Week 4, and Week 8

  4. Response rate at Weeks 2, 4, and 8

    Proportion of subjects who achieved a reduction of ≥20 mmHg in MSSBP or ≥10 mmHg in MSDBP from baseline.

    Measured: Week 2, Week 4, and Week

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Aug 2025
  2. Study start21 Jun 2022
  3. Primary completion20 Jun 2024
  4. Study completion13 Sep 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
286 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07116863
Sponsor's protocol ID
KDF1901-3H
Status last verified
Aug 2025
First submitted
7 Aug 2025
Last updated
12 Aug 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Lee HY, Suh SY, Youn HJ, Chung WB, Han KH, Ahn Y, Cha DH, Kim SH, Park JS, Kim CK, Kim JS, Shin JH, Yoon MH, Lee JB, Kim JH, Jeon DS, Yu CW, Kim MH, Lim KH, Sohn IS, Jeong JO, Park CG, Choi YJ, Lee CH, Jeong J, Yoon SB, Kwon SU, Yeo SH, Kim CJ. Efficacy and Safety Profile of a Triple Single-Pill Combination of Valsartan/Amlodipine/Chlorthalidone in Patients with Uncontrolled Hypertension. Clin Ther. 2026 Jun 8:S0149-2918(26)00156-6. doi: 10.1016/j.clinthera.2026.05.010. Online ahead of print.

    PubMed 42259717

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing KDF1901-R0, KDF1901-L and KDF1901 in people with Essential Hypertension, run by Kyungdong Pharmaceutical Co., Ltd. at 2 sites in South Korea.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 12 inclusion and 42 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Mean Sitting Systolic Blood Pressure (MSSBP) from baseline to Week 8 (time frame: Baseline to Week 8). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07116863, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Aug 2025.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in