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Not yet recruitingNCT06916130Updated Apr 8, 2025

A Study to Compare PK/PD Characteristics and Safety Profiles Between AD-120 and AD-120A

A Phase 1 interventional study of AD-120A and AD-120 in Gastroesophageal Reflux Disease (GERD), sponsored by Addpharma Inc.. Not yet recruiting at 1 site in South Korea. Open to participants aged 19 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-04-08.

Sponsored by Addpharma Inc. (part of Yuhan Corporation) · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Sep 2025, 1 year 1 month ago, but the record still lists the study as not yet recruiting.
Phase
Phase 1
Study type
Interventional
Enrollment
48
Allocation
Randomized
Ages
19 Years to 50 Years
Sex
All
01

Study summary

Primary endpoint of this study is to evaluate the pharmacokinetic and pharmacodynamic characteristics of AD-120 in healthy subjects.

Read the detailed description

The purpose of this study is to evaluate the pharmacokinetic and pharmacodynamic characteristics and safety profiles of AD-120 compared with AD-120A in healthy subjects.

02

Conditions studied

  • Gastroesophageal Reflux Disease (GERD)
03

In context

Gastroesophageal Reflux

1,086 studies on the registry are indexed under Gastroesophageal Reflux; 187 are open to participants now.

This study's planned enrollment of 48 is below the median of 72 across 724 interventional studies indexed under Gastroesophageal Reflux.

Browse Gastroesophageal Reflux studies →

Lead sponsor

Addpharma Inc. is the lead sponsor of 58 studies on the registry; 25 are open to participants now.

First submitted after Addpharma Inc. became part of Yuhan Corporation.

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

04

Who can participate

Ages eligible
19 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  • Body weight equal to or greater than 50.0kg and equal to or less than 90.0kg and Body mass index (BMI) between 18.5 kg/m2 and 29.9 kg/m2 at the time of screening visit
  • The Age equal to or greater than 19 and equal to or less than 50 in healthy volunteers at the time of screening visit
  • Negative result from Serum Helicobacter pylori antibody at the time of screening visit

Exclusion criteria

Exclusion Criteria:

  • Patients with trouble performing pH monitor catheter
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
48 participants (estimated)

Study arms

  • Experimental
    Arm-A

    Period 1 : Test Drug (AD-120), Period 2 : Reference Drug (AD-120A)

    Drug: AD-120A · Drug: AD-120

  • Experimental
    Arm-B

    Period 1 : Reference Drug (AD-120A), Period 2 : Test Drug (AD-120)

    Drug: AD-120A · Drug: AD-120

Interventions

  • DrugAD-120A

    Administered before the breakfast during 7 days, Oral, Tablet

    Also known as: Reference Drug

  • DrugAD-120

    Administered before the breakfast during 7 days, Oral, Tablet

    Also known as: Test drug

06

What researchers measure

Primary outcomes

  1. Area under the plasma concentration-time curve over a dosing interval at steady state (AUCτ,ss)

    AUCτ,ss after 7days repeated administration of Omeprazole

    Time frame: AUCτ,ss: pre-dose to 24 hours of 1st administration versus pre-dose to 24 hours of repeated administration (7days)

  2. The time of peak concentration after single dose

    Tmax after 1days administration of Omeprazole

    Time frame: Tmax: from pre-dose to 24 hours of 1st administration

  3. Percent decrease from baseline in integrated gastric acidity measured by 24h pH monitoring

    Percent decrease from baseline in integrated gastric acidity measured by 24h pH monitoring for 24-hour interval after 7th dose

    Time frame: 24 hours before 1st administration to 24 hours after repeated administration (7days)

07

Study locations

1 site
  • Seoul National University Hospital
    Seoul, South Korea
    • Seunghwan Lee Lee, M.D.,PhD · Contact
08

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

Start is estimated for Apr 2025; primary completion for Sep 2025, 4 months later.

Of 26 phase 1 interventional studies under Gastroesophageal Reflux, half reached primary completion within 5 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 15. This study's planned 4 months is below that.

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

Registered
Mar 25, 2025
First posted
Apr 8, 2025
StartEst.
Apr 21, 2025
Primary completionEst.
Sep 1, 2025
CompletionEst.
Sep 1, 2025
Last update
Apr 8, 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 Apr 8, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06916130
Lead sponsor
Addpharma Inc.
Responsible party
Sponsor
First posted
Apr 8, 2025
Start date
Apr 21, 2025 (estimated)
Primary completion
Sep 1, 2025 (estimated)
Completion
Sep 1, 2025 (estimated)
Last update
Apr 8, 2025

Study contacts

Hanna Yang
Contact
hnyang@addpharma.co.kr
+82-31-891-6918
Seung Hwan Lee, M.D., Ph.D.
Contact

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 not yet recruiting, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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