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Heartburn, Indigestion, Stomach acid related symptoms, Nocturnal stomach acid related symptoms, Healthy volunteers

Bayer Identifier:

22553

ClinicalTrials.gov Identifier:

Not Available

EudraCT Number:

Not Available

EU CT Number:

Not Available
A First-in-Human Study to Learn How Well a Bi-Layer Calcium Carbonate Antacid Tablet Works Compared to a Standard, Non-Layered Calcium Carbonate Tablet in Healthy Male Participants

Trial purpose

Researchers are looking for a better way to treat people who have heartburn, indigestion, and problems due to excessive stomach acid. These are common problems which can affect daily life and disturb sleep during the night-time. Heartburn is the burning sensation or pain in the chest which occurs when stomach acid rises up in the food pipe (esophagus).

Calcium carbonate tablets are used to treat heartburn, indigestion, and related digestive problems. Calcium carbonate works by neutralizing the excess acid in the stomach. The study treatment is a new bi-layer calcium carbonate tablet that has two layers. One layer quickly releases calcium carbonate aimed to provide quick relief (called immediate release) while the other layer releases calcium carbonate slowly to make the relief last longer (called sustained release).

In this study, bi-layer calcium carbonate tablets will be given to healthy men for the first time. This study will provide information on how the new bi-layer tablet works inside the body.

The main purpose of this study is to learn about how the new bi-layer calcium carbonate tablet changes the average acidity levels (measured using pH) compared to the standard calcium carbonate tablet during the night-time.

For this, researchers will measure the acidity levels in the upper part of the stomach at regular intervals during the night-time.

The participants will be randomly (by chance) assigned to one of two treatment groups:

Participants in the first group will take the treatments at night.

Participants in the second group will take the treatments during the day.

All participants in both groups will take 2 bi-layer tablets and 2 standard tablets after a meal with a gap of 6 to 8 days between treatments. However, in each group, half the participants will receive the bi-layer tablets first while the other half will receive the standard tablets first.

Each participant will be in the study for around 52 days with up to 4 visits to the study site. This includes:

1 visit about 28 days before the treatment starts during which the doctors will confirm that the participant can take part in the study

2 visits for treatment with a gap of 6-8 days between each treatment, and

1 visit 7 to 14 days after the treatment ends during which the doctors will monitor the participants’ health.

During the study, the doctors and their study team will:

check participants’ overall health by performing tests such as blood and urine tests, and check heart health using an electrocardiogram (ECG)

take images of the stomach at different times after taking the treatment

measure acidity level (pH) using a device called pH probe that is inserted into the upper part of the stomach

ask the participants questions about how easy it is to take the study treatment

ask the participants what adverse events they are having.

An adverse event is any medical problem that a participant has during a study. Doctors keep track of all adverse events, irrespective of whether they think it is related to the study treatment, or not.

As this study is conducted in healthy men who will not gain any benefit from this treatment, access to the study treatment after the study is not planned.

Key Participants Requirements

Sex

Male

Age

18 - 65 Years
  • - Male
    - Participant must be 18 to ≤65 years of age inclusive, at the time of signing the informed consent.
    - Participants must have a verified diagnosis of “healthy”: the results of the standard clinical, laboratory, and instrumental examinations are within the normal range (limits of reference range). The Investigator can interpret individual findings based on the participant’s age, physical state and level of fitness. Participants with readings marginally outside the normal range may be included in the study if, in the Investigator’s opinion, these are not clinically significant (NCS); this decision will be documented in the CRF.
    - Results of safety laboratory tests are within normal range (limits of reference range).
    - Non-smokers or passive smokers exposed to smoke in an enclosed room for less than 4 h per week.
    - BMI within the range 18.5 to ≤30 kg/m2 (inclusive).
    - Unless participant has had bilateral orchidectomy or a vasectomy (with confirmed sterility), must be abstinent from penile-vaginal intercourse for the duration of the study and agree to remain abstinent for 90 days after the last dose of IMP, OR agree to use a condom during each episode of penile-vaginal intercourse, in addition to their partner (if a person who could become pregnant) using a highly effective form of contraception as described in protocol.
    - Participant has given written informed consent to participate in the trial prior to admission to the trial as described in Section 10.1.3 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
    - Be willing and able to participate in all scheduled visits, treatment plan, laboratory tests and other trial procedures according to the protocol.
  • - A history of physical or psychiatric diseases (e.g., diabetes, hypothyroidism and other metabolic diseases, renal disease).
    - Recent unexplained significant weight loss (6 – 7 kg) in the last 6 months.
    - A history or current symptoms of Zollinger-Ellison syndrome, gastric carcinoma, peptic ulcer disease, pernicious anaemia, Barrett’s oesophagus or systemic sclerosis.
    - Meal-induced heartburn of severe severity, historically and -
    - Use of any H2-receptor antagonist and/or PPI within one week prior to Screening.
    - History and currently prescribed medication for treatment of heartburn associated with increased acidity, reflux esophagitis, and peptic ulcers.
    - Current or history of drug or alcohol abuse.
    - Etc.

Trial summary

Enrollment Goal
16
Trial Dates
February 2024 - March 2024
Phase
Phase 1
Could I Receive a placebo
No
Products
BAY1180654
Accepts Healthy Volunteer
Yes

Primary Outcome

  • Gastric pH levels as measured and recorded with tip of pH probe in gastric fundus.
    date_rangeTime Frame:
    During night-time on Day 1

Secondary Outcome

  • Gastric pH levels as measured and recorded with tip of pH probe in gastric fundus.
    date_rangeTime Frame:
    During daytime on Day 1
  • Percentage of total time gastric pH is above pH 3.5 from time of dosing until 8h post-dose during night-time comparing the bi-layer tablet and standard comparator
    date_rangeTime Frame:
    Up to 8 hours post-dose during night-time
  • Percentage of total time gastric pH is above pH 3.5 from time of dosing until 6h post-dose during daytime comparing the bi-layer tablet and standard comparator.
    date_rangeTime Frame:
    Up to 6 hours post-dose during daytime
  • Change in mean gastric pH
    date_rangeTime Frame:
    During night-time and daytime on Day 1
  • Determination of gastrointestinal tract location, and initial radiolabel release time, using scintigraphic images obtained at set time points post ingestion for bi-layer tablet and immediate release comparator.
    date_rangeTime Frame:
    During night-time and daytime on Day 1
  • Disintegration rate (t50%) of each formulation will be determined quantitatively via analysis of scintigraphic images.
    date_rangeTime Frame:
    During night-time and daytime on Day 1
  • Determination of complete radiolabel release time, using scintigraphic images obtained at set time points post ingestion for bi-layer tablet and immediate release comparator.
    date_rangeTime Frame:
    During night-time and daytime on Day 1
  • Gastric emptying kinetics of the dispersed radiolabeled material (t50% and t90%) of each formulation will be determined quantitatively via analysis of the scintigraphic images.
    date_rangeTime Frame:
    During night-time and daytime on Day 1
  • Participant questionnaire
    date_rangeTime Frame:
    On Day 1

Trial design

An open label, single center, randomized, two-way crossover parallel group, trial to assess the mechanism of action of a bi-layer swallowable tablet (immediate release and sustained release) containing calcium carbonate antacid in an overnight and day application as compared with a standard, non-layered (immediate release) calcium carbonate swallow tablet in fed healthy male participants.
Trial Type
Interventional
Intervention Type
Other
Trial Purpose
Other
Allocation
Randomized
Blinding
N/A
Assignment
Crossover Assignment
Trial Arms
2

Additional Information

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