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KPL-387

Phase 2

Pericarditis | Small molecule | Cardiovascular |Kiniksa Pharmaceuticals International, plc|Last Updated: Aug 26, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment325

FDA Designations

ORPHAN_DRUG

Clinical trial landscape

KPL-387 · 2 trials · 4 indications

Phase 2 2
NCT07288216Transition to KPL-387 Monotherapy Dosing & Administration StudyRecurrent Pericarditis
RECRUITING80 Analytics
NCT07010159Phase 2/3 Study of Participants With Recurrent Pericarditis Evaluating the Efficacy and Safety of KPL-387Pericarditis
RECRUITING325 Analytics
PHASE2RECRUITING
Transition to KPL-387 Monotherapy Dosing & Administration Study
Recurrent PericarditisUnlock trial analytics
PHASE2RECRUITING
Phase 2/3 Study of Participants With Recurrent Pericarditis Evaluating the Efficacy and Safety of KPL-387
PericarditisUnlock trial analytics

Study Endpoints

Primary Endpoints

Posology: Proportion of participants free from Pericarditis Recurrence by Week 16
From first administration of study drug up to Week 16
Long-Term Extension: Annualized rate of Pericarditis Recurrence through the end of the LTE.
Up to 24 Months
Phase 2: Time to Treatment Response by Week 24
From Baseline up to Week 24
Phase 3: Time to Pericarditis Recurrence
From Baseline in the RW Period
Long-Term Extension: Annualized rate of Pericarditis Recurrence
Up to 24 Months

Secondary Endpoints

Posology: Time to Pericarditis Recurrence by Week 16
From first administration of study drug up to Week 16
Long Term Extension: Change from LTE Baseline in SF-36v2 Physical Component Summary score through the end of the LTE
Up to 24 Months
Long Term Extension: Change from LTE Baseline in SF-36v2 Mental Component Summary score through the end of the LTE
Up to 24 Months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Posology KPL-387EXPERIMENTALIn Posology Study, KPL-387 will be administered by subcutaneous (SC) injection through Week 16.
Long-Term ExtensionEXPERIMENTALParticipants 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.
Phase 2 KPL-387 100mg SC q2wkEXPERIMENTALIn Phase 2 Treatment Period KPL-387 will be administered by subcutaneous (SC) injection every 2 weeks (q2wk) through Week 22.
Phase 2 KPL-387 100mg SC q4wkEXPERIMENTALIn Phase 2 Treatment Period, KPL-387 or placebo (alternating every 2 weeks) will be administered by SC injection q2wk through Week 22 to provide active drug administration every 4 weeks (q4wk) while maintaining treatment concealment.
Phase 2 KPL-387 300mg SC q2wkEXPERIMENTALIn Phase 2 Treatment Period KPL-387 will be administered by SC injection q2wk through Week 22.
Phase 2 KPL-387 300mg SC q4wkEXPERIMENTALIn Phase 2 Treatment Period, KPL-387 or placebo (alternating every 2 weeks) will be administered by SC injection q2wk through Week 22 to provide active drug administration q4wk while maintaining treatment concealment.
Phase 3 KPL-387 SCEXPERIMENTALRun-In (RI) Period: participants receive single-blind KPL-387 Randomized Withdrawal (RW) Period: eligible participants are randomized (1:1 KPL-387 or placebo) to receive double-blinded KPL-387.
Phase 3 Placebo SCPLACEBO_COMPARATORRW Period: eligible participants are randomized (1:1 KPL-387 or placebo) to receive double-blinded placebo.

Interventions

NameTypeDescription
KPL-387DRUGadministered by subcutaneous injection
PlaceboDRUGadministered by subcutaneous injection
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites41

Key Inclusion Criteria: * Has well-controlled recurrent pericarditis (i.e., including having CRP \< 0.5 mg/dL within 14 days of Baseline and a pericarditis pain NRS score ≤ 3 at Baseline) * Has a documented history of CRP elevation (\> 1 mg/dL) associated with at least one prior acute pericarditis ...

Countries:United StatesCanadaFranceGermanyGreeceItalyPolandSerbiaSpainUnited Kingdom
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Recent Changes (Last 90 Days)

LOWAug 26, 2026NCT07010159lastUpdatePostDate: changed
LOWAug 26, 2026NCT07010159lastUpdatePostDate: changed
LOWAug 11, 2026NCT07288216lastUpdatePostDate: changed
LOWAug 11, 2026NCT07010159Enrollment: 165 → 325
LOWAug 11, 2026NCT07288216lastUpdatePostDate: changed
LOWAug 11, 2026NCT07010159Enrollment: 165 → 325
LOWJul 9, 2026NCT07288216lastUpdatePostDate: changed
LOWJul 9, 2026NCT07288216lastUpdatePostDate: changed
LOWJun 22, 2026NCT07288216lastUpdatePostDate: changed
LOWJun 22, 2026NCT07288216lastUpdatePostDate: changed

Frequently asked questions about KPL-387

What is KPL-387 used for?

KPL-387 is an investigational small molecule being developed for the treatment of pericarditis, including recurrent pericarditis. It is currently in Phase 2 clinical development and has not been approved by the FDA. The drug is being studied in patients with recurrent pericarditis to evaluate its efficacy and safety.

Who makes KPL-387?

KPL-387 is being developed by Kiniksa Pharmaceuticals International, plc, a biopharmaceutical company traded on the NASDAQ under the ticker symbol KNSA. The company is conducting clinical trials to evaluate the drug's potential in treating recurrent pericarditis.

What phase is KPL-387 in?

KPL-387 is currently in Phase 2 clinical development. It is an investigational drug and has not received FDA approval. The drug has been granted orphan drug designation by the FDA for the treatment of pericarditis, reflecting its potential role in addressing this condition.

What clinical trials is KPL-387 in?

KPL-387 is being studied in two Phase 2 clinical trials. The first, NCT07010159, is a Phase 2/3 study evaluating the efficacy and safety of KPL-387 in participants with recurrent pericarditis, with an enrollment of 325. The second, NCT07288216, is a study on transitioning to KPL-387 monotherapy dosing and administration, with an enrollment of 80.

Is KPL-387 FDA approved?

No, KPL-387 is not FDA approved. It is an investigational drug currently in Phase 2 clinical development. The FDA has granted orphan drug designation for KPL-387, which provides certain development incentives, but the drug has not yet completed clinical trials or received marketing approval.