A Phase 3 interventional study of Spesolimab and Placebo matching to spesolimab in Pyoderma Gangrenosum, sponsored by LEO Pharma. Recruiting at 104 sites in 21 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-09.
Sponsored by LEO Pharma · Phase 3, Interventional, and Treatment
The purpose of this study is to find out whether a medicine called spesolimab helps people with pyoderma gangrenosum (PG). The main aim is to see whether spesolimab leads to closure of PG ulcers. This study is open to adults with ulcerative PG with at least 1 ulcer that measures between 5 cm\^2 to 80 cm\^2 in size.
This study has 2 parts. In Part 1, participants are put into groups randomly, which means by chance. 1 group gets spesolimab and the other group gets placebo. Placebo infusions look like spesolimab infusions, but do not contain any medicine. Every participant has a 2 in 3 chance of getting spesolimab. For the first 8 weeks, participants also take corticosteroid medicine by mouth.
In Part 2, participants are put into groups again. Participants without open ulcers have an equal chance of getting spesolimab or placebo. Participants with open skin ulcers will get spesolimab.
In both parts, participants receive spesolimab or placebo as an infusion into a vein every 4 weeks.
Participants are in the study for about 1.5 years. During this time, they visit the study site 20 times. At study visits, doctors check the participant's skin for signs of PG. The doctors also regularly check participants' health and take note of any unwanted effects. The results of the groups are compared to see whether the treatment works.
36 studies on the registry are indexed under Pyoderma Gangrenosum; 7 are open to participants now.
This study's planned enrollment of 90 is above the median of 10 across 26 interventional studies indexed under Pyoderma Gangrenosum.
Browse Pyoderma Gangrenosum studies →LEO Pharma is the lead sponsor of 225 studies on the registry; 5 are open to participants now.
Of its 32 completed or terminated interventional studies of FDA-regulated products, 24 (75%) have results posted.
Counted across the registry records on this site, refreshed daily.
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.
Exclusion criteria:
"Active or latent tuberculosis (TB)
Further exclusion criteria apply.
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.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
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.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
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.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Drug: Spesolimab · Drug: Prednisone · Drug: Prednisolone
Drug: Placebo matching to spesolimab · Drug: Prednisone · Drug: Prednisolone
Solution for infusion
Placebo matching to spesolimab
Prednisone
Prednisolone
Achievement of complete closure (PGAR-100 (100% pyoderma gangrenosum area reduction)) of the target PG ulcer at any time up to Week 26 and confirmed at the next consecutive visit (at least 2 weeks later)
PGAR-100 is defined as complete closure and re-epithelisation of a PG ulcer without drainage and requirements for dressing.
Time frame: Up to Week 28.
Key secondary endpoint: Achievement of PGAR-100 of the target PG ulcer at Week 26 confirmed at the next consecutive visit (at least 2 weeks later)
PGAR-100 is defined as complete closure and re-epithelisation of a PG ulcer without drainage and requirements for dressing.
Time frame: Up to Week 28.
Achievement of 50% area reduction (PGAR-50) of the target PG ulcer at any time up to Week 26
Achievement of a PGAR-50 defines an area reduction of a PG ulcer from baseline by 50%.
Time frame: Up to Week 26.
Achievement of ≥ 3 point reduction in NRS Pain score from baseline at Week 26
Numeric Rating Scale for Pain (NRS Pain) is a unidimensional measure of pain intensity. It is a 11-point numeric scale, in which a respondent selects a whole number (0-10 integers) that best reflects the intensity of their pain, with 0 representing "no pain" and 10 representing "worst pain imaginable". Trial participant is asked to report their pain intensity in the last 24 h.
Time frame: At baseline and at Week 26.
Achievement of a DLQI of ≤ 5 at Week 26
Dermatology Life Quality Index (DLQI) is a trial participant-administered, quality of life questionnaire consisting of 10 questions that cover 6 domains (symptoms and feelings, daily activities, leisure, work and school, personal relationships, problems with treatment). Response categories include "not relevant" or "not at all" (score of 0), "a little" (score of 1), "a lot" (score of 2) and "very much" (score of 3). Question 7 is a "yes"/ "no" question where "yes" is scored as 3. DLQI total score is calculated by summing the scores of each question, resulting in a range of 0 to 30, with higher scores indicating more impairment of a trial participant's quality of life.
Time frame: At Week 26.
Achievement of complete response
Complete response (CR), defined as all ulcers completely closed and re- epithelised without drainage and requirements for dressing, as assessed by the investigator).
Time frame: At Week 26.
Achievement of PGAR-100 of any measurable PG ulcer (≥5 cm^2 at baseline) at any time up to Week 26 and confirmed at the next consecutive visit (at least 2 weeks later)
PGAR-100 is defined as complete closure and re-epithelisation of a PG ulcer without drainage and requirements for dressing.
Time frame: Up to Week 28.
Achievement of PGAR-100 of all measurable PG ulcers (≥5 cm^2 at baseline) at any time up to Week 26 and confirmed at the next consecutive visit (at least 2 weeks later)
PGAR-100 is defined as complete closure and re-epithelisation of a PG ulcer without drainage and requirements for dressing.
Time frame: Up to Week 28.
Time to recurrence among trial participants who had achieved CR at Week 26 up to Week 52
Recurrence is defined as emergence of the disease (PG ulcer\[s\]) at the previous ulcer sites(s) or emergence of any new PG ulcer(s).
Time frame: Up to Week 52.
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Plan to share: No
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From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Studies of the drug tested here: Spesolimab