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CompletedNCT02893358ANTI-MASKUpdated Jan 6, 2025

Antihypertensive Treatment in Masked Hypertension

A Phase 4 interventional study of Allisartan Isoproxil and Placebo in Masked Hypertension, sponsored by Yan Li. Completed at 1 site in China. Open to participants aged 30 Years to 70 Years. Per ClinicalTrials.gov, last updated 2025-01-06.

Sponsored by Yan Li · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
320
Allocation
Randomized
Ages
30 Years to 70 Years
Sex
All
01

Study summary

The primary purpose of the study is to estimate the target organ protection after 12 months of antihypertensive treatment in masked hypertension patients with at least one kind of target organ damage (left ventricular hypertrophy, large arterial stiffness and microalbuminuria). Improvement was defined as the relevant parameter back to normal or declined at least 20%.

The secondary objectives include: blood pressure lowering effect, target organ damage parameters improvement, and the incidence rate of all cause death and cardiovascular events (stroke and myocardia infraction).

02

Conditions studied

  • Masked Hypertension

Keywords

  • Allisartan Isoproxil
  • left ventricular hypertrophy
  • large arterial stiffness
  • microalbuminuria
03

In context

Hypertrophy, Left Ventricular

162 studies on the registry are indexed under Hypertrophy, Left Ventricular; 28 are open to participants now.

This study's enrollment of 320 is above the median of 100 across 97 interventional studies indexed under Hypertrophy, Left Ventricular.

Browse Hypertrophy, Left Ventricular studies →

Lead sponsor

Yan Li is the lead sponsor of 7 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
30 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Age 30-70 years old
  2. Masked hypertension patients, defined as clinic BP\<140/90 mmHg, while 24h ambulatory BP ≥130/80 mmHg and (or) daytime BP ≥135/85 mmHg and (or) nighttime BP ≥120/70 mmHg
  3. Combined with at least one kind of target organ damage: left ventricular hypertrophy (Cornell voltage combination ≥2440mm·ms or Sokolow-Lyon index ≥4.0mv for male and 3.5mv for female), large arterial stiffness (brachial-ankle pulse wave velocity ≥1400cm/s) and microalbuminuria (twice random urine microalbuminuria/creatinine ratio ≥2.5mg/mmol for male and 3.5mg/mmol for female).
  4. Didn't use any anti-hypertension drugs within 2 weeks
  5. Be willing to participate in the trials and able to finish clinic visits

Exclusion criteria

Exclusion Criteria:

  1. Under antihypertensive treatment
  2. Secondary hypertension
  3. Taking other medications that may influence BP
  4. Sleep apnea syndrome
  5. Diabetes combined with microalbuminuria
  6. Renal parenchymal disease, such as chronic nephritis, polycystic kidney
  7. Occurrence of coronary heart disease, myocardial infraction or stroke within 6 months
  8. Structural heart disease, such as hypertrophic cardiomyopathy, dilated cardiomyopathy
  9. (ALT), aspartate transaminase (AST), total (TBL) upper the twice of normal range, serum creatinine (Scr)≥2.0mg/dl, plasma hypokalemia≥5.5mmol/L,
  10. Patients have to angiotensin receptor blockers (ARBs)
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
320 participants (actual)

Study arms

  • Active comparator
    Active treatment

    Treatment will be started with allisartan isoproxil 80mg once daily taken in the morning during 8:00-9:00. After 2 months, to achieve the target BP (24h BP\<130/80 mmHg, and daytime BP \<135/85 mmHg, and nighttime BP \<120/70 mmHg), allisartan isoproxil may be doubled to 160mg once a day. If necessary, amlodipine 2.5mg may be combined with allisartan Isoproxil.

    Drug: Allisartan Isoproxil

  • Placebo comparator
    Placebo

    Placebo tablets are identical to the active study drugs, with a similar schedule of administration.

    Drug: Placebo

Interventions

  • Allisartan Isoproxil 80mg once daily taken in the morning during 8:00-9:00. To achieve the target blood pressure allisartan isoproxil may be doubled to 160mg once a day. If necessary, amlodipine 2.5mg may be combined with allisartan isoproxil. Duration: 12 months.

  • DrugPlacebo

    Corresponding placebo once daily taken in the morning during 8:00-9:00. Duration: 12 months.

06

What researchers measure

Primary outcomes

  1. Improvement rate of target organ damage (left ventricular hypertrophy, large arterial stiffness and microalbuminuria)

    Improvement was defined as the relevant parameters (Cornell voltage combination, Sokolow-Lyon index, microalbuminuria/creatinine ratio, brachial-ankle pulse wave velocity) back to normal or declined at least 20%.

    Time frame: 1 year

Secondary outcomes

  1. 24h ambulatory blood pressure

    Time frame: 1 year

  2. electrocardiogram

    calculating Cornell voltage combination and Sokolow-Lyon index

    Time frame: 1 year

  3. microalbuminuria/creatinine ratio

    Time frame: 1 year

  4. brachial-ankle pulse wave velocity

    Time frame: 1 year

  5. incidence rate of all cause death and cardiovascular events (stroke and myocardia infraction)

    Time frame: 1 year

07

Study locations

1 site
  • Ruijin Hospital
    Shanghai, Shanghai 200025, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2017 to primary completion in Oct 2021, 56 months.

Of 14 phase 4 interventional studies under Hypertrophy, Left Ventricular, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 25 and three quarters within 44. This study's 56 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 31, 2016
First posted
Sep 8, 2016
StartActual
Feb 14, 2017
Primary completionActual
Oct 30, 2021
CompletionActual
Mar 30, 2022
Last update
Jan 6, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 6, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02893358
Lead sponsor
Yan Li
Responsible party
Yan Li (Professor, Doctor of Medicine, Doctor of Philosophy, Shanghai Institute of Hypertension) — Sponsor-investigator
First posted
Sep 8, 2016
Start date
Feb 14, 2017
Primary completion
Oct 30, 2021
Completion
Mar 30, 2022
Last update
Jan 6, 2025

Oversight

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

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This study is completed, as verified in Jan 2025. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Allisartan isoproxil

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