ClinicalTrials.gg
Sign In
CompletedNCT03831607Updated Mar 7, 2024

A Phosphate Binder Switch Study of KHK7791 in Hyperphosphatemia Patients on HD

A Phase 2 interventional study of KHK7791 in Hyperphosphatemia, sponsored by Kyowa Kirin Co., Ltd.. Completed at 1 site in Japan. Open to participants aged 20 Years to 79 Years. Per ClinicalTrials.gov, last updated 2024-03-07.

Sponsored by Kyowa Kirin Co., Ltd. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
67
Allocation
Not applicable
Ages
20 Years to 79 Years
Sex
All
01

Study summary

To evaluate the effect and safety of a switch from phosphate binders to KHK7791 to treat Hyperphosphatemia in patients on HD.

02

Conditions studied

  • Hyperphosphatemia

Browse trials for

Keywords

  • Tenapanor
  • Hyperphosphatemia
  • Hemodialysis
03

In context

Hyperphosphatemia

173 studies on the registry are indexed under Hyperphosphatemia; 16 are open to participants now.

This study's enrollment of 67 is below the median of 101 across 143 interventional studies indexed under Hyperphosphatemia.

Browse Hyperphosphatemia studies →

Lead sponsor

Kyowa Kirin Co., Ltd. is the lead sponsor of 159 studies on the registry; 8 are open to participants now.

Browse Kyowa Kirin Co., Ltd. studies →

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

04

Who can participate

Ages eligible
20 Years to 79 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

  • Stable chronic renal failure patients who have undergone hemodialysis 3 times per week for at least 12 weeks until screening examination.
  • Met certain conditions for dialysis excluding Dry Weight (Dialysate, Dialyzer, Frequency of Dialysis per Week, Dialysis Time, Blood Flow Rate, and Dialysate and Substitution Fluid Flow Rate) 2 weeks before screening examination.
  • Taking at least 2 tablets of phosphate binder 3 times per day. The prescribed dosage regimen should have been unchanged for the period from 2 weeks before screening examination through pre-enrollment.
  • Serum phosphorus levels should be between 3.5 and 7.0 mg/dL (inclusive) at screening examination.
  • If on any vitamin D or calcimimetics regimen, the dosage regimen should have been unchanged for the last 2 weeks before screening examination.

Exclusion criteria

Exclusion Criteria:

  • iPTH > 600 pg/mL (should be based on the most recent value from patient's medical records before pre-enrollment)
  • History of inflammatory bowel disease (IBD) or diarrhea predominant irritable bowel syndrome
  • History of gastrectomy or enterectomy (excluding endoscopic resection and cecectomy) or having undergone gastrointestinal tract surgery within 3 months before screening examination.
  • Severe heart disease (including congestive heart failure, defined as [NYHA] cardiac functional classification of Class III or IV, and vascular lesions requiring hospitalization such as myocardial infarction), hepatic impairment (including /ALT ≥ 100 U/L before the start of observation period), or concurrent cirrhosis.
  • Developed cerebrovascular disease (such as cerebral infarction and cerebral hemorrhage) or cardiovascular disease (such as acute myocardial infarction and unstable angina) requiring hospitalization within 6 months before screening examination.
  • Uncontrollable hypertension or diabetes
  • Scheduled for living donor kidney transplant, change in the mode of dialysis, home hemodialysis or plans to change the dialysis center (relocate to another hospital/clinic) during the study period.
  • Any diagnosis of or treatment of within 5 years before screening examination (excluding basal cell carcinoma or surgically resected intraepithelial carcinoma of uterine cervix).
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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

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.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

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

Study arms

  • Experimental
    KHK7791

    Patients start at KHK7791 30 mg BID and can down titrate weekly to 20, 15, 10, and 5 mg BID, sequentially based on a GI tolerability question.

    Drug: KHK7791

Interventions

  • DrugKHK7791

    KHK7791 30 mg, 20 mg ,10 mg or 5 mg tablets

    Also known as: Tenapanor

06

What researchers measure

Primary outcomes

  1. Percentage of subjects who reduce the total number of taking phosphate binder tablets at the last assessment from baseline.

    Time frame: Week 26

Secondary outcomes

  1. Serum phosphorus levels at each time point after the start of treatment

    Time frame: up to Week 26

  2. Corrected serum calcium level at each time point after the start of treatment

    Time frame: up to Week 26

07

Study locations

1 site
  • Study Site 1
    Niigata, Japan
08

References and documents

Individual participant data

Plan to share: Undecided

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 Dec 2018 to primary completion in Nov 2019, 10 months.

Of 13 phase 2 interventional studies under Hyperphosphatemia, half reached primary completion within 7 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 10. This study's 10 months is above that.

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

Registered
Jan 29, 2019
First posted
Feb 6, 2019
StartActual
Dec 27, 2018
Primary completionActual
Nov 26, 2019
CompletionActual
Nov 26, 2019
Last update
Mar 7, 2024
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 Mar 7, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03831607
Lead sponsor
Kyowa Kirin Co., Ltd.
Responsible party
Sponsor
First posted
Feb 6, 2019
Start date
Dec 27, 2018
Primary completion
Nov 26, 2019
Completion
Nov 26, 2019
Last update
Mar 7, 2024

Oversight

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

Not currently enrolling

This study is completed, as verified in Apr 2023. 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.

Studies of the drug tested here: Tenapanor

Other studies in this condition

Hyperphosphatemia →

Other studies from this sponsor

Kyowa Kirin Co., Ltd. →

Start the discussion