This Study is Done in Patients With Plaque Psoriasis and Tests How Well They Tolerate BI 730357 and How Effective it is

Placebo matching BI 730357 taken orally once daily as a film-coated tablet in the morning while fasted for 12 weeks in period 1 followed by the same treatment for 12 weeks in period 2 (total treatment period of 24 weeks).

25 milligram (mg) BI 730357 taken orally once daily as a film-coated tablet in the morning while fasted for 12 weeks in period 1 followed by the same treatment for 12 weeks in period 2 (total treatment period of 24 weeks).

50 milligram (mg) BI 730357 taken orally once daily as a film-coated tablet in the morning while fasted for 12 weeks in period 1 followed by the same treatment for 12 weeks in period 2 (total treatment period of 24 weeks).

100 milligram (mg) BI 730357 taken orally once daily as a film-coated tablet in the morning while fasted for 12 weeks in period 1 followed by the same treatment for 12 weeks in period 2 (total treatment period of 24 weeks).

200 milligram (mg) BI 730357 taken orally once daily as a film-coated tablet in the morning while fasted for 12 weeks in period 1 followed by the same treatment for 12 weeks in period 2 (total treatment period of 24 weeks).

4 film-coated tablets of matching Placebo were taken orally in the morning with a meal and 2 film-coated tablets of matching Placebo were taken orally in the evening with a meal for 12 weeks.

4 film-coated tablets of 100 milligram (mg) BI 730357 (400 mg in total) were taken orally in the morning with a meal and 2 film-coated tablets of matching Placebo were taken orally in the evening with a meal for 12 weeks.

2 film-coated tablets of 100 milligram (mg) BI 730357 were taken orally with a meal in the morning and evening (twice daily; total daily dosage: 400 mg) for 12 weeks.