A Phase 2 interventional study of KPL-387 in Recurrent Pericarditis, Heart Diseases and Pericarditis, sponsored by Kiniksa Pharmaceuticals International, plc. Recruiting at 48 sites in 10 countries. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-10-28.
Sponsored by Kiniksa Pharmaceuticals International, plc · Phase 2, Interventional, and Treatment
The primary objective of this study is to characterize the efficacy and safety of dosing regimens used to transition from prior pericarditis therapies to KPL-387 monotherapy in participants with well-controlled recurrent pericarditis on standard therapies.
During the Posology (Dosing and Administration) Study, participants on oral pericarditis therapies alone (i.e., non-steroidal anti-inflammatory drugs [NSAIDs], colchicine, and/or glucocorticoids) and participants on Interleukin-1 (IL-1) pathway inhibition drugs will transition to KPL-387 per protocol guidelines. Participants will receive KPL-387 for up to 16 weeks in the Posology Study.
At study visits throughout the Posology Study, participants will be queried for symptoms of chest pain (and participants will fill out pericarditis pain numerical rating scale [NRS] scores) and will be assessed for physical signs (e.g., pericardial friction rub) and laboratory evidence of pericarditis activity (e.g., C-reactive protein [CRP]) as well as treatment tolerability and pharmacokinetics (PK). Participants experiencing new or worsening symptoms consistent with pericarditis will be managed per study protocol.
All active, enrolled participants in the Posology Study who have not completed an End of Treatment (EOT) Visit may be eligible to transition into the Long-Term Extension (LTE) following completion of the Week 16 Visit. The Week 16 Visit will serve as both a Posology Study End of Study Visit and a Baseline Visit for the LTE. Participants who choose not to participate in the LTE will complete an EOT Visit followed by a Safety Follow-Up until 8 weeks after the last KPL-387 dose administration.
The open-label LTE is designed to evaluate the long-term efficacy and safety of KPL-387 in recurrent pericarditis (RP). Treatment in the LTE may continue until the participant has received up to 24 months of treatment in the LTE or until KPL-387 is approved for commercial use in that region to treat pericarditis, whichever occurs first.
At study visits throughout the LTE, participants will be queried for symptoms of chest pain (and participants will fill out pericarditis pain NRS scores) and will be assessed for physical signs (e.g., pericardial friction rub) and laboratory evidence of pericarditis activity (e.g., CRP) as well as treatment tolerability and PK. Participants experiencing new or worsening symptoms consistent with pericarditis will be managed as described in the protocol.
54 studies on the registry are indexed under Pericarditis; 23 are open to participants now.
This study's planned enrollment of 120 is above the median of 60 across 29 interventional studies indexed under Pericarditis.
Browse Pericarditis studies →Kiniksa Pharmaceuticals International, plc is the lead sponsor of 5 studies on the registry; 2 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Key Inclusion Criteria:
Key Exclusion Criteria:
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.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
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.
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.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
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.
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.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
In Posology Study, KPL-387 will be administered by subcutaneous (SC) injection through Week 16.
Drug: KPL-387
Participants from Posology Study who continue into the Long-Term Extension will receive KPL-387 for up to 24 months or until KPL-387 is approved for commercial use in that region to treat pericarditis, whichever occurs first.
Drug: KPL-387
administered by subcutaneous injection
Posology: Proportion of participants free from Pericarditis Recurrence by Week 16
Time frame: From baseline up to Week 16
Long-Term Extension: Annualized rate of Pericarditis Recurrence through the end of the LTE.
Time frame: Up to 24 Months
Posology: Time to Pericarditis Recurrence by Week 16
Time frame: From baseline up to Week 16
Long Term Extension: Change from LTE Baseline in SF-36v2 Physical Component Summary score through the end of the LTE
SF-36 (36-item Short Form Survey) Physical Component determines participants' quality of life by assessing 1) limitations in physical functioning due to health problems; 2) limitations in usual role because of physical health problems; 3) bodily pain; 4) general health perceptions; Scores on each item are summed and averaged (range: 0=worst to 100=best) with higher scores indicating better health. Increases from baseline indicate improvement.
Time frame: Up to 24 Months
Long Term Extension: Change from LTE Baseline in SF-36v2 Mental Component Summary score through the end of the LTE
SF-36 (36-item Short Form Survey) Mental Component determines participants' quality of life by assessing 1) vitality; 2) limitations in social functioning because of physical or emotional problems; 3) limitations in usual role due to emotional problems; and 4) general mental health. Scores on each item are summed and averaged (range: 0=worst to 100=best) with higher scores indicating better health. Increases from baseline indicate improvement.
Time frame: Up to 24 Months
Long Term Extension: Change from LTE Baseline in EQ-5D-5L individual index scores over time through the end of the LTE
The EQ-5D-5L (EuroQol-5 Dimension 5-level) is a self-reported health status questionnaire that consists of 6 questions used to calculate a health utility score for use in health economic analysis. There are 2 components to the EQ-5D-5L: a 5-item health state profile that assesses mobility, self-care, usual activities, pain/discomfort, and anxiety/depression used to obtain an Index Utility Score, as well as a visual analogue scale (VAS) that measures health state. Individual and index scores range from 0 to 1, with low scores representing a higher level of dysfunction.
Time frame: Up to 24 months
Long Term Extension: Change from LTE Baseline in EQ-5D-5L visual analog scale (VAS) over time through the end of the LTE.
The EQ-5D-5L (EuroQol-5 Dimension 5-level) is a self-reported health status questionnaire that consists of 6 questions used to calculate a health utility score for use in health economic analysis. There are 2 components to the EQ-5D-5L: a 5-item health state profile that assesses mobility, self-care, usual activities, pain/discomfort, and anxiety/depression used to obtain an Index Utility Score, as well as a VAS that measures health state. The VAS is designed to rate the participant's current health state on a scale from 0 to 100, where 0 represents the worst imaginable health state and 100 represents the best imaginable health state.
Time frame: Up to 24 months
Started Mar 2026 (actual). Primary completion is estimated for Dec 2027, 21 months after the start.
How these figures are worked out, and which studies are left out of them.
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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Kiniksa Pharmaceuticals International, plc