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Active, not recruitingNCT06169397Updated Aug 21, 2026

An Open-label Extension Study of XTMAB-16 in Patients With Pulmonary Sarcoidosis

A Phase 2 interventional study of XTMAB-16 in Pulmonary Sarcoidosis, sponsored by Xentria, Inc.. Active, not recruiting at 11 sites in 4 countries. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-08-21.

Sponsored by Xentria, Inc. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
31
Allocation
Not applicable
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Open-label Study to Evaluate the Long-term Safety and Durability of Effect of XTMAB-16 in Patients With Pulmonary Sarcoidosis With or Without Extra-pulmonary Involvement

Read the detailed description

A Long-term Multicenter Open-label Study to Evaluate the Long-term Safety and Durability of Effect of XTMAB-16 in Patients With Pulmonary Sarcoidosis With or Without Extra-pulmonary Involvement

02

Conditions studied

  • Pulmonary Sarcoidosis

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03

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Participants are eligible to be included in the study if the following criteria apply:

  • Completion of XTMAB-16-201 study: completion of Week 12 (Part A) or Week 24 (Part B) assessments.
  • Participants from XTMAB-16-201 Part A and Part B should be on a stable steroid dose for at least 2 weeks prior to informed consent/Day 1 of XTMAB-16-202 (Day 1 should occur at the next scheduled dosing visit on the assigned dose frequency cohort of XTMAB 16 201 ± 2 weeks).

Exclusion criteria

Exclusion Criteria:

Participants are excluded from the study if any of the following criteria apply:

  • Evidence of treatment-related AEs requiring treatment discontinuation per XTMAB-16-201 protocol observed in XTMAB-16-201 study.
  • Evidence of treatment failure observed in XTMAB-16-201 study per protocol definition.
  • Pregnant or breastfeeding women or women who are planning to be pregnant during the course of the study.
04

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
31 participants (actual)

Study arms

  • Experimental
    XTMAB-16 Treatment

    Dose to be established in the XTMAB-16-201 Study.

    Drug: XTMAB-16

Interventions

  • DrugXTMAB-16

    XTMAB-16 infusion

05

What researchers measure

Primary outcomes

  1. Rate of Adverse Events (AEs), including Serious Adverse Events (SAEs), and Adverse Events of Special Interests (AESIs) throughout the study duration

    To evaluate the long-term safety and tolerability of XTMAB-16 in participants with pulmonary sarcoidosis with or without extra-pulmonary manifestations

    Time frame: Through study completion, an average of 4 years

Secondary outcomes

  1. Durability/maintenance of effect of XTMAB-16 as characterized by corticosteroid dosing (maintain or lower steroid dosing)

    To evaluate the durability/maintenance of effect of XTMAB-16 as characterized by corticosteroid dosing (maintain or lower steroid dosing)

    Time frame: Through study completion, an average of 4 years

  2. Durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life measured by Kings Sarcoidosis Questionnaire Lung

    To evaluate the durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life or pulmonary tests

    Time frame: Through study completion, an average of 4 years

  3. Durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life measured by Kings Sarcoidosis Questionnaire General

    To evaluate the durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life or pulmonary tests

    Time frame: Through study completion, an average of 4 years

  4. Durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life measured by Leicester Cough Questionnaire

    To evaluate the durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life or pulmonary tests

    Time frame: Through study completion, an average of 4 years

  5. Durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life measured by Steroid Toxicity Questionnaire

    To evaluate the durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life or pulmonary tests

    Time frame: Through study completion, an average of 4 years

  6. Durability/maintenance of effect of XTMAB-16 measured by Pulmonary Function Test (forced vital capacity)

    To evaluate the durability/maintenance of effect of XTMAB-16 as characterized by changes in quality of life or pulmonary tests

    Time frame: Through study completion, an average of 4 years

  7. Immunogenicity (number of participants who test positive for anti drug antibodies and/or neutralizing antibodies) in the context of long-term dosing

    To evaluate the immunogenicity of XTMAB-16 in the context of long-term dosing

    Time frame: Through study completion, an average of 4 years

  8. Long-term effect of XTAMB-16 on serum biomarkers important to cytokine pathway and granuloma formation (ACE, IL-6, sIL-2R, sTNFa, CRP, IL-1b, calcitriol) in sarcoidosis

    To evaluate the long-term effect of XTMAB-16 on serum biomarkers important to cytokine pathway and granuloma formation in sarcoidosis

    Time frame: Through study completion, an average of 4 years

06

Study locations

11 sites
  • Xentria Investigative Site
    Denver, Colorado 80206, United States
  • Xentria Investigative Site
    Chicago, Illinois 60611, United States
  • Xentria Investigative Site
    Greenville, North Carolina 27858, United States
  • Xentria Investigative Site
    Cincinnati, Ohio 45267, United States
  • Xentria Investigative Site
    Philadelphia, Pennsylvania 19140, United States
  • Xentria Investigative Site
    Prague, 140 59, Czechia
  • Xentria Investigative Site
    Bielsk Podlaski, 15-044, Poland
  • University Hospitals Coventry and Warwickshire NHS Trust
    Coventry, England CV22DX, United Kingdom
  • King's College Hospital NHS Foundation Trust
    London, England SE59RS, United Kingdom
  • Norfolk and Norwich University Hospitals NHS Foundation Trust
    Norwich, England OX3 7LE, United Kingdom
  • NHS Tayside
    Perth, Scotland PH11NX, United Kingdom
07

Registry details

Key details

Study ID
NCT06169397
Lead sponsor
Xentria, Inc.
Responsible party
Sponsor
First posted
Dec 13, 2023
Start date
Mar 1, 2024
Primary completion
Nov 2026 (estimated)
Completion
Nov 2026 (estimated)
Last update
Aug 21, 2026

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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