Status:

RECRUITING

A Clinical Study of MK-1045 in People With Lupus or Rheumatoid Arthritis (MK-1045-004)

Lead Sponsor:

Merck Sharp & Dohme LLC

Conditions:

Systemic Lupus Erythematosus

Rheumatoid Arthritis

Eligibility:

All Genders

18-75 years

Phase:

PHASE1

Brief Summary

This study looks at a study medicine called MK-1045 in people with lupus and rheumatoid arthritis (RA). The main goal of the study is to learn about the safety of MK-1045 and if people tolerate it whe...

Eligibility Criteria

Inclusion

  • Has a body mass index between 18 and 32 kg/m\^2, inclusive
  • Systemic lupus erythematosus (SLE): Has a diagnosis of SLE for at least 6 months and met the European Alliance of Associations for Rheumatology (EULAR)/ American College of Rheumatology (ACR) 2019 classification criteria
  • SLE: Is taking at least one background therapy for SLE
  • RA: Has a diagnosis of RA for at least 6 months and meets the 2010 ACR-EULAR classification criteria for RA

Exclusion

  • Has a known active infection (excluding fungal infection of nail beds), or any major episode of infection requiring hospitalization or treatment with anti-infectives within 8 weeks prior to the Day 1 dosing
  • History of serious recurrent or chronic infection
  • Is known to be infected with hepatitis B virus, hepatitis C virus, or human immunodeficiency virus
  • Has evidence of active tuberculosis (TB), latent TB, or inadequately treated TB
  • Has a significant or uncontrolled medical disease in any organ system not related to RA or SLE
  • For RA participants, has a history of any arthritis with onset before age 17 years
  • Has a current inflammatory condition other than SLE or RA that could interfere with disease activity assessments
  • History of cancer (except fully treated nonmelanoma skin cancers or cervical carcinoma in situ after complete surgical removal) and is disease free for \<5 years before Day 1 dosing
  • Has had a major surgery within 3 months prior to Screening or has a major surgery planned during the study.
  • Has symptomatic heart failure (New York Heart Association class III or IV) or myocardial infarction or unstable angina pectoris within 6 months prior to Screening
  • Has a severe chronic pulmonary disease requiring oxygen therapy
  • Has current active lymphoproliferative disease, including lymphoma, or signs and symptoms suggestive of possible lymphoproliferative disease

Key Trial Info

Start Date :

February 19 2026

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

July 16 2029

Estimated Enrollment :

21 Patients enrolled

Trial Details

Trial ID

NCT07363590

Start Date

February 19 2026

End Date

July 16 2029

Last Update

March 9 2026

Active Locations (3)

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Page 1 of 1 (3 locations)

1

Anima Diepenbeek ( Site 0601)

Diepenbeek, Limburg, Belgium, 3590

2

Arensia Exploartory Medicine ( Site 1301)

Tbilisi, Georgia, 0112

3

PMSI Republican Clinical Hospital "T.Mosneaga" ( Site 1001)

Chisinau, Moldova, 2025