A Study of XTMAB-16 in Patients With Pulmonary Sarcoidosis

May 19, 2026 updated by: Xentria, Inc.

A Seamless, Phase 1b/2 Multiple Ascending Dose/Proof of Concept Study of XTMAB-16 in Patients With Pulmonary Sarcoidosis With or Without Extrapulmonary Manifestations

A phase 1b/2 study of XTMAB-16 in patients with pulmonary sarcoidosis

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

94

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Czechia
  • Denmark
  • Poland
  • Spain
  • United Kingdom
    • England
      • Coventry, England, United Kingdom, CV22DX
        • Recruiting
        • University Hospitals Coventry and Warwickshire NHS Trust
        • Contact:
        • Principal Investigator:
          • Beatriz Lara Gallego, MD
      • London, England, United Kingdom, NW12PG
        • Recruiting
        • University College London Hospitals NHS Foundation Trust
        • Contact:
        • Principal Investigator:
          • Joanna Porter, MD
      • London, England, United Kingdom, SE59RS
        • Completed
        • King's College Hospital NHS Foundation Trust
      • Norwich, England, United Kingdom, NR47UY
        • Completed
        • Norfolk and Norwich University Hospitals Nhs Foundation Trust
      • Oxford, England, United Kingdom, OX37LE
        • Completed
        • Oxford University Hospitals NHS Foundation Trust
    • Scotland
      • Perth, Scotland, United Kingdom, PH11NX
  • United States
    • Alabama
    • Colorado
    • Florida
      • Jacksonville, Florida, United States, 32209
        • Completed
        • Xentria Investigative Site
    • Illinois
    • Iowa
    • Maryland
    • Michigan
    • Minnesota
    • New York
      • Albany, New York, United States, 12208
        • Terminated
        • Xentria Investigative Site
      • New York, New York, United States, 10029
    • North Carolina
    • Ohio
    • Pennsylvania
    • South Carolina
    • Texas
      • Houston, Texas, United States, 77030
        • Withdrawn
        • Xentria Investigative Site
    • Virginia
      • Charlottesville, Virginia, United States, 22903
        • Recruiting
        • Xentria Investigative Site
        • Contact:
          • clinicaltrials@stopsarcoidosis.org
          • Phone Number: 224-443-4615

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Participant between 18 to 80 years (inclusive) of age.
  2. Weighs between 45 kg and 160 kg (99 to 353 lbs) at Screening.
  3. Diagnosis of pulmonary sarcoidosis (at least 6 months before Screening) using the 2020 American Thoracic Society (ATS) Clinical Practice Guideline (Crouser et al, 2020), the European Respiratory Society (ERS) or the WASOG criteria including a compatible clinical and radiologic presentation with other causes of granulomatous disease ruled out (cutaneous and ocular involvement permitted).
  4. Modified Medical Research Conference (mMRC) Dyspnea Scale of ≥ 1.
  5. Receiving treatment of 7.5 to 25 mg/day of oral prednisone, or equivalent, during the screening period and, at the determination of the investigator, is capable of undergoing the protocol specific corticosteroid taper regimen.
  6. Receiving treatment with methotrexate, azathioprine, mycophenolate, leflunomide, chloroquine, or hydroxychloroquine for at least 3 months before Screening that has been at a stable dose for 4 weeks before Screening. All efforts should be made to maintain stable background therapy at the Screening dose through the intervention period at the Investigator's discretion.
  7. PART A only: Willing to refrain from consumption of grapefruit or grapefruit juice [pomelos, exotic citrus fruits, or grapefruit hybrids] from screening visit until after the final dose.
  8. Polymerase chain reaction (PCR) test or rapid antigen test negative for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) at Screening.
  9. Able to provide written informed consent.
  10. In the opinion of the Investigator, the participant is capable of understanding and complying with protocol requirements

Exclusion Criteria:

  1. Pregnant or breastfeeding women or women who are planning to become pregnant during the study.
  2. PART A ONLY: Participants > 65 years of age. (This exclusion criterion is only applicable for EU).

  3. PART A ONLY: Known potentially significant fibrotic disease and/or active inflammation contained solely in the hilar region as shown by high-resolution computed tomography (HRCT), confirmed by a central reader. Participants with current active inflammation in the hilar region with concurrent inflammation outside the hilar region may be included.

    A historical HRCT performed within 6 months of screening may be submitted for diagnostic confirmation by central review. If a subject's last HRCT was from > 6 months of screening, an HRCT should be performed during screening for diagnostic confirmation by central review.

  4. PART A ONLY: Any prior TNFα inhibitor therapy.
  5. Clinically significant extra-pulmonary sarcoidosis requiring systemic therapy as determined by the investigator.
  6. PART B ONLY: Any therapy with an anti-TNFα monoclonal antibody (e.g., infliximab, adalimumab, golimumab and their biosimilars) within 6 months.
  7. Baseline percent predicted forced vital capacity (FVC) of < 50%.
  8. Prior treatment with rituximab or repository corticotropin injection within the previous 12 months.
  9. Clinically significant Central Nervous System (CNS) sarcoidosis requiring therapy, except history of isolated seventh cranial nerve palsy or evidence of demyelinating neurologic disease.
  10. Advanced congestive heart failure (New York Heart Association [NYHA] 3 or 4).
  11. Current disease presentation consistent with Lofgren's syndrome (i.e., presence of the triad of erythema nodosum, bilateral hilar lymphadenopathy on chest X-ray, and joint pain).
  12. Clinically significant pulmonary hypertension requiring treatment. Note: Clinically significant pulmonary hypertension requiring treatment would be defined as treatment with, i.e., prostacyclins, phosphodiesterase 5 inhibitors, and endothelin receptor antagonists.
  13. Known hypersensitivity to any component of the formulation of XTMAB-16.
  14. Live or messenger ribonucleic acid (mRNA) vaccination within 2 weeks before Day 1 or inoculation with a live or mRNA vaccine is planned during study participation.
  15. Evidence of active or latent TB by interferon-gamma release assay (IGRA) or invasive fungal infections at Screening.
  16. Known positive history of malignancy other than non-melanomatous skin cancer in the last 2 years, including in-situ carcinoma of the uterine cervix completely cured by radical surgery.
  17. Positive test result for hepatitis B surface antigen (HBsAg), hepatitis C virus (HCV) antibody, coronavirus disease (COVID-19), TB, or a known history of human immunodeficiency virus (HIV) infection at Screening.
  18. Women of childbearing potential who are sexually active with a non-sterilized male partner and are not willing to adhere to highly effective birth control measures from the time of signing the informed consent, throughout the duration of the study, and for 90 days after 5 half-lives have elapsed since the last dose of study drug.
  19. Male participants who are non-sterilized and sexually active with a female partner of childbearing potential and are not willing to use highly effective contraception from the time of signing the informed consent throughout the duration of the study, and for 90 days after 5 half-lives have elapsed since last dose of study drug.
  20. Clinically significant hepatic or renal disease, including uncontrolled diabetes at the discretion of the investigator.
  21. Any severe prior reaction to any type of biologics or human blood product such as albumin, IgG, etc.
  22. Concurrent emphysema.
  23. Known hypercalcemia due to non-sarcoidosis conditions such as untreated hyperparathyroidism, at the discretion of the investigator.
  24. Abnormal ECG: ventricular arrhythmias (non-sustained ventricular tachycardia (VT), multifocal or frequent premature ventricular contractions, bundle branch block, axis deviation, or abnormal Q waves). In the case of a QTcF (corrected QT interval by Fredericia) interval > 450 ms (men) or > 480 ms (women; participants with bundle branch block) or PR interval outside the range of 120 to 220 ms, the assessment may be repeated once for eligibility determination at Screening or Baseline.
  25. Donation or loss of 450 mL or more of his or her blood volume (including plasmapheresis) or transfusion of any blood product within 90 days prior to dosing.
  26. Known uncontrolled hypertension. Note: Uncontrolled hypertension is noted as blood pressure ≥ 160/100 mmHg despite antihypertensive therapy within 3 months of randomization.
  27. Clinical signs and symptoms consistent with COVID-19, e.g., fever, dry cough, dyspnea, sore throat, fatigue, new smell or taste disorder or confirmed infection by appropriate laboratory test within the last 4 weeks prior to Screening.
  28. In the opinion of the investigator, inability to tolerate corticosteroid taper.
  29. Concurrent systemic steroid use for non-sarcoidosis conditions.
  30. Concurrent known auto-immune disease requiring treatment.
  31. Participation in another clinical trial of an investigational agent within 3 months (small molecule) / 6 months (biologics) or 5 half-lives (if known) of the agent, whichever is longer.
  32. Any condition that required hospitalization within the 3 months prior to Day 1 or is likely to require so during the study.
  33. Clinically significant abnormalities in the Screening physical exam, medical history, vital signs, ECG, or clinical laboratory tests that are not known to be due to concurrent sarcoidosis, and in the opinion of the Investigator and Medical Monitor should preclude the participant's participation in the clinical study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Sequential Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Part A - XTMAB-16: 2 mg/kg every 4 weeks (Q4W) for 12 weeks or Placebo
Drug: XTMAB-16 or Placebo
Infusion
Experimental: Part A - XTMAB-16: 4 mg/kg every 4 weeks (Q4W) for 12 weeks or Placebo
Drug: XTMAB-16 or Placebo
Infusion
Experimental: Part A - XTMAB-16: 2 mg/kg every 2 weeks (Q2W) for 12 weeks or Placebo
Drug: XTMAB-16 or Placebo
Infusion
Experimental: Part A - XTMAB-16: 4 mg/kg every 2 weeks (Q2W) for 12 weeks or Placebo
Drug: XTMAB-16 or Placebo
Infusion
Experimental: Part B - XTMAB-16 (dose established in Part A) for 24 weeks or Placebo
Drug: XTMAB-16 or Placebo
Infusion

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Rate of Adverse Events, including Serious Adverse Events, Dose Limiting Toxicities, and Adverse Events of Special Interest throughout the study duration
Time Frame: Throughout Study Duration, 20 weeks (Part A)
Safety and Tolerability
Throughout Study Duration, 20 weeks (Part A)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Proportion of participants who achieve the targeted tapered dose of corticosteroid
Time Frame: Baseline to Week 12 (Part A)
Efficacy
Baseline to Week 12 (Part A)
Proportion of patients able to maintain steroid reduction through Week 24
Time Frame: Week 12 to Week 24 (Part B)
Efficacy
Week 12 to Week 24 (Part B)
Proportion of participants who achieve at least 50% reduction in dose of corticosteroid by Week 12
Time Frame: Baseline to Week 12 (Part A and B)
Efficacy
Baseline to Week 12 (Part A and B)
Rate of Adverse Events (AEs), including Serious Adverse Events (SAEs) throughout the study duration
Time Frame: Throughout Study Duration, 34 weeks (Part B)
Safety
Throughout Study Duration, 34 weeks (Part B)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Xentria, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 10, 2023

Primary Completion (Estimated)

May 1, 2029

Study Completion (Estimated)

May 1, 2029

Study Registration Dates

First Submitted

May 12, 2023

First Submitted That Met QC Criteria

May 25, 2023

First Posted (Actual)

June 6, 2023

Study Record Updates

Last Update Posted (Actual)

May 20, 2026

Last Update Submitted That Met QC Criteria

May 19, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • XTMAB-16-201

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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