ClinicalTrials.gg
CompletedNCT03493269Updated Feb 26, 2021

A Multiple Dose Study of BAY1834845 in Healthy Male Subjects and in Patients With Psoriasis

A Phase 1 interventional study of BAY1834845 and Matching Placebo in Healthy Volunteers and Psoriasis, sponsored by Bayer. Completed at 2 sites in Germany. Open to participants aged 18 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-02-26.

Sponsored by Bayer · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
72
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 299 studies in Psoriasis with a site in Germany — 13 open to participants now, 30 under way, 15 of them phase 3. Psoriasis · Germany.

Enrollment
182nd of 260
72 · median 195
Started
2018
with 27 others
Phase 1
26 of 299
none open now
Registered
195th of 299
by date

Among the 299 studies in Psoriasis with a site in Germany, this one is the 182nd largest by enrollment of the 260 interventional ones that give a count, is one of 28 that started in 2018, is one of 26 in phase 1, and was the 195th registered.

Psoriasis

2,028 studies on the registry are indexed under Psoriasis; 275 are open to participants now.

Browse Psoriasis studies →

Open to participants now

13 of the 299 studies in Psoriasis with a site in Germany are open now. Recruiting first, the newest first:

8 more — sign in →

All 13 open studies →

A study can be open while its sites in Germany have not opened yet or have stopped. Only those recruiting at a site in Germany →

Who these studies take

Of the 174 Psoriasis studies recruiting now, 91 (52%) set no upper age limit and 67 (39%) stop at 75 or younger; 25 take children under 18; 40 take healthy volunteers.

This study: 18 Years to 70 Years · all sexes · healthy volunteers too.

The full table on the hub →

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02

Study summary

To assess safety and tolerability of multiple oral doses of BAY1834845 in healthy male subjects (Part 1) and in patients with psoriasis (Part 2).

To assess the pharmacokinetic (PK) properties of total BAY1834845 in plasma after oral multiple doses of BAY1834845 in healthy male subjects (Part 1) and patients with psoriasis (Part 2).

03

Conditions studied

  • Healthy Volunteers
  • Psoriasis

Browse trials for

04

Who can participate

Ages eligible
18 Years to 70 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

Part 1 (healthy male subjects)

  • Healthy male subjects, 18 to 50 years of age (inclusive), and in good health as determined by medical history, physical examination, vital signs, (ECG), and laboratory tests at screening
  • (BMI) above or equal to 18.5 and lower or equal to 30 kg/m2 (BMI = body weight (kg) / [height (m)]2 and a body weight above or equal 50 kg Part 2 (patients with psoriasis)
  • Male patients, 18 to 70 years of age (inclusive) or female patients of non-child bearing potential, 30 to 70 years of age (inclusive)
  • Body mass index above or equal to 18.5 and lower or equal to 35 kg/m*2 and a body weight above 50 kg
  • A documented diagnosis of psoriasis, with a history of at least 6 months prior to study drug administration. Moderate to severe plaque psoriasis at screening, defined by: a) an involved body surface area (BSA) above or equal to 10% of BSA, b) a Psoriasis Area and Severity Index (PASI) score of above or equal, 12 c) a Physician's Global Assessment (PGA) score of above or equal 2.

Exclusion criteria

Exclusion Criteria:

  • History of to any of the components of the study drug
  • Any abnormal findings in safety laboratory parameters and
  • History of tuberculosis (TB) or active or latent tuberculosis
  • Receipt of live or attenuated vaccine 90 days prior to the first dosing
Terms in these criteria, in plain language(4)

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.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
72 participants (actual)

Study arms

  • Experimental
    BAY1834845

    Part 1 in healthy male subjects: Dose Groups 1-4 : orally administered multiple ascending doses. The treatment will last 10 consecutive days (treatment period1) and 1 day (treatment period 2) Dose Group 5: The treatment will last 1 day (treatment period 1) and 10 consecutive days (treatment period 2)

    Drug: BAY1834845 · Drug: Midazolam

  • Placebo comparator
    Matching Placebo

    Part 1: Matching placebo in healthy male subjects.

    Other: Matching Placebo · Drug: Midazolam

  • Experimental
    Chosen dose of BAY1834845

    Part 2: This dose level will be adminstered in female and male patients with psoriasis

    Drug: BAY1834845

  • Placebo comparator
    Placebo

    Part 2: The placebo will be adminstered in female and male patients with psoriasis

    Other: Matching Placebo

Interventions

  • Orally administered.

  • OtherMatching Placebo

    Orally administered.

  • Part 1: Orally administered 1mg as a single dose.

06

What researchers measure

Primary outcomes

  1. Frequency of treatment-emergent adverse events (TEAEs)

    Part 1 in healthy male subject

    Time frame: Approximately 47 days

  2. Severity of treatment-emergent adverse events (TEAEs)

    Part 1 in healthy male subject

    Time frame: Approximately 47 days

  3. Frequency of treatment-emergent adverse events (TEAEs)

    Part 2: Patients with psoriasis

    Time frame: Approximately 84 days

  4. Severity of treatment-emergent adverse events (TEAEs)

    Part 2: Patients with psoriasis

    Time frame: Approximately 84 days

  5. AUC(0-24)md of BAY1834845

    Part 1 AUC(0-24)md: AUC from zero to 24 hours after multiple dosing

    Time frame: Part 1 - Period 1 (dose group 1-4): Day 1 to 2 Part 1 - Period 2 (dose group 5): Day 1 to 2

  6. AUC(0-12)md of BAY1834845

    Part 1 AUC(0-12)md:AUC from zero to 12 hours after multiple dosing

    Time frame: Part 1 - Period 1 (dose group 1-4): Day 1, Part 1 - Period 2 (dose group 5): Day 1

  7. Cmax,md of BAY1834845

    Part 1 Cmax,md:Cmax(Maximum observed drug concentration, directly taken from analytical data) after multiple dosing

    Time frame: Part 1 - Period 1 (dose group 1-4): Day 1, Part 1 - Period 2 (dose group 5): Day 1

  8. Cav,md of BAY1834845

    Part 1 Cav:Average concentration within a dosing interval after multiple dosing

    Time frame: Part 1 - Period 1 (dose group 1-4): Day 1 to 2 Part 1 - Period 2 (dose group 5): Day 1 to 2

  9. AUC(0-24)md of BAY1834845

    Part 2: AUC(0-24)md: AUC from zero to 24 hours after multiple dosing

    Time frame: Part 2: one day between day 35 and 42

  10. AUC(0-12)md of BAY1834845

    Part 2: AUC(0-12)md: AUC from zero to 12 hours after multiple dosing

    Time frame: Part 2: one day between day 35 and 42

  11. Cmax,md of BAY1834845

    Part 2: Cmax,md:Cmax (Maximum observed drug concentration, directly taken from analytical data) after multiple dosing

    Time frame: Part 2: one day between day 35 and 42

  12. Cav, md of BAY1834845

    Part 2: Cav: Average concentration within a dosing interval after multiple dosing

    Time frame: Part 2: one day between day 35 and 42

07

Study locations

2 sites
  • Charité Research Organisation GmbH
    Berlin, 10117, Germany
  • PAREXEL GmbH
    Berlin, 14050, Germany
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

Ran from Apr 2018 to primary completion in Sep 2020, 29 months.

Of 137 industry-sponsored phase 1 interventional studies under Psoriasis, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 4 and three quarters within 16. This study's 29 months is above that.

Counting every sponsor, half of 155 studies reached it within 10 months; a quarter within 5 and three quarters within 17.

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

Registered
Apr 4, 2018
First posted
Apr 10, 2018
StartActual
Apr 16, 2018
Primary completionActual
Sep 16, 2020
CompletionActual
Feb 5, 2021
Last update
Feb 26, 2021
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 Feb 26, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03493269
Lead sponsor
Bayer
Responsible party
Sponsor
First posted
Apr 10, 2018
Start date
Apr 16, 2018
Primary completion
Sep 16, 2020
Completion
Feb 5, 2021
Last update
Feb 26, 2021

Study contacts

Bayer Study Director
study director · Bayer

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 Feb 2021. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drugs tested here: Zabedosertib · Midazolam

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