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A Trial to Evaluate the Safety and Efficacy of PS433540 to Treat Hypertension

Prospective, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Safety and Efficacy of a Novel Dual Angiotensin and Endothelin Receptor Antagonist (PS433540) in Subjects With Stage I and II Hypertension

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00522925
Enrollment
280
Registered
2007-08-30
Start date
2007-08-31
Completion date
2008-05-31
Last updated
2011-09-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension

Keywords

hypertension, high blood pressure

Brief summary

The purpose of the study is to see if PS433540 lowers blood pressure better than placebo and to see how safe PS433540 is compared to placebo.

Interventions

200mg capsule, once daily for 28 days

DRUGplacebo

placebo capsule, once daily for 28 days

Sponsors

Ligand Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
30 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Males or females 30 - 80 years * Mean seated Systolic Blood Pressure (SBP) ≥ 150 - ≤ 179 mmHg and mean seated DBP \< 110 mmHg at two consecutive qualifying visits. The mean difference in SBP between the two consecutive qualifying visits must be ≤ 10 mmHg. * Mean daytime (8AM - 4PM) ambulatory SBP must be between ≥ 140 - ≤ 179 mmHg and mean daytime (8AM - 4PM) Diastolic Blood Pressure (DBP) ≤ 110 mmHg * Subjects must have a usual daytime schedule. Night shift workers are excluded from participation. * Women of child-bearing potential (WOCBP) and male subjects must use two reliable forms of contraception if sexually active. Alternatively, female subjects must be postmenopausal (for at least 1 year)

Exclusion criteria

* Subjects with serious disorders which may limit the ability to evaluate the efficacy or safety of PS433540, including cardiovascular, renal (including the absence of one kidney), pulmonary, hepatic, gastrointestinal (including clinically significant malabsorption), endocrine/metabolic, hematologic/oncologic (including an active malignancy other than basal cell carcinoma), neurologic and psychiatric diseases. * Subjects with a history of myocardial infarction, angina, coronary angioplasty, bypass surgery or New York Heart Association (NYHA) class II-IV heart failure within the last 6 months. * Subjects with a history of cerebrovascular accident or transient ischemic attack within the last 1 year. * Subjects with diabetes mellitus (type I and type II).

Design outcomes

Primary

MeasureTime frame
Change From Baseline in Mean 24-hour Ambulatory Systolic Blood Pressure4 weeks of treatment with PS43540

Secondary

MeasureTime frame
Change From Baseline in Mean 24-hour Ambulatory Diastolic Blood Pressure4 weeks of treatment with PS43540
Change From Baseline in Mean Seated Systolic and Diastolic Blood Pressure4 weeks of treatment with PS43540

Countries

United States

Participant flow

Participants by arm

ArmCount
1- Placebo
Placebo
36
2- PS433540 200mg
200mg daily for 4 weeks
39
3- PS433540 500mg
500mg once daily for 4 weeks
38
Total113

Baseline characteristics

Characteristic2- PS433540 200mg3- PS433540 500mg1- PlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
12 Participants7 Participants6 Participants25 Participants
Age, Categorical
Between 18 and 65 years
27 Participants31 Participants30 Participants88 Participants
Age Continuous59.1 years
STANDARD_DEVIATION 8.72
56.8 years
STANDARD_DEVIATION 9.87
58.4 years
STANDARD_DEVIATION 7.94
58.1 years
STANDARD_DEVIATION 8.84
Region of Enrollment
United States
39 participants38 participants36 participants113 participants
Sex: Female, Male
Female
18 Participants10 Participants12 Participants40 Participants
Sex: Female, Male
Male
21 Participants28 Participants24 Participants73 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
9 / 368 / 3910 / 38
serious
Total, serious adverse events
1 / 361 / 390 / 38

Outcome results

Primary

Change From Baseline in Mean 24-hour Ambulatory Systolic Blood Pressure

Time frame: 4 weeks of treatment with PS43540

ArmMeasureValue (MEAN)
1- PlaceboChange From Baseline in Mean 24-hour Ambulatory Systolic Blood Pressure-0.3 mmHg
2- PS433540 200mgChange From Baseline in Mean 24-hour Ambulatory Systolic Blood Pressure-11.9 mmHg
3- PS433540 500mgChange From Baseline in Mean 24-hour Ambulatory Systolic Blood Pressure-15.3 mmHg
Secondary

Change From Baseline in Mean 24-hour Ambulatory Diastolic Blood Pressure

Time frame: 4 weeks of treatment with PS43540

Secondary

Change From Baseline in Mean Seated Systolic and Diastolic Blood Pressure

Time frame: 4 weeks of treatment with PS43540

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026