Status:

COMPLETED

Phase 1 Study to Assess the Safety, PK and PD of INBRX-101 in Adults With Alpha-1 Antitrypsin Deficiency

Lead Sponsor:

Inhibrx Biosciences, Inc

Conditions:

Alpha-1 Antitrypsin Deficiency

AATD

Eligibility:

All Genders

18-80 years

Phase:

PHASE1

Brief Summary

This is an open-label, 2-part, dose-escalating, Phase 1 study of INBRX-101 (rhAAT-Fc). Part 1 will consist of single ascending dose (SAD) administration of INBRX-101 and Part 2 will consist of multipl...

Eligibility Criteria

Inclusion

  • Documented alpha-1 antitrypsin (AAT) serum concentration \<11 μM.
  • Diagnosis of alpha-1 antitrypsin deficiency (AATD) with any allelic combination with exception of the null/null genotype.
  • For subjects in Part 2 80 and 120 mg/kg cohorts ONLY: post-bronchodilator FEV1 of at least 40% of predicted normal value.
  • For subjects in Part 2 80 and 120 mg/kg cohorts ONLY: subjects eligible for bronchoscopy per judgment of investigator.
  • Nonsmoker for at least 6 months prior to study and must remain nonsmoking for the entire study duration.
  • Adequate hepatic and renal function as defined per protocol.
  • Willing to undergo current augmentation therapy washout (if applicable) and refrain from initiating augmentation therapy, other investigational drug trials for AATD, therapy with IV immunoglobulins or monoclonal antibodies during the entire study, including follow-up.

Exclusion

  • Known or suspected allergy to components of INBRX-101 (AAT or human IgG) or pdAAT.
  • Participation in any investigational drug trial within 30 days prior to this trial, or subjects receiving IV immunoglobulins or monoclonal antibodies within 30 days prior to this trial.
  • History of and/or on the waiting list for lung or liver transplant, lobectomy, or lung volume reduction surgery.
  • Acute respiratory tract infection or COPD exacerbation that required antibiotic treatment and/or increase in systemic steroid dosage within the 4 weeks prior to screening. Subjects are permitted to continue to receive steroids if the investigator judges the subject to have a history of stable dosing.
  • Subjects with ongoing or history of unstable cor pulmonale.
  • Infection with hepatitis A, B, or C or human immunodeficiency virus (HIV).
  • Active autoimmune disease or documented history of autoimmune disease that 1) required systemic steroids or immune-suppressive medications and 2) tested positive for auto-antibodies. Exception: Endocrinopathies managed with hormone replacement therapy (HRT).
  • Current substance and/or alcohol abuse with protocol defined exceptions.
  • Current narcotics abuse with protocol defined exceptions.

Key Trial Info

Start Date :

July 19 2019

Trial Type :

INTERVENTIONAL

Allocation :

ACTUAL

End Date :

August 18 2022

Estimated Enrollment :

31 Patients enrolled

Trial Details

Trial ID

NCT03815396

Start Date

July 19 2019

End Date

August 18 2022

Last Update

September 13 2022

Active Locations (10)

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Page 1 of 3 (10 locations)

1

UC Davis School of Medicine

Sacramento, California, United States, 95817

2

University of Florida College of Medicine

Gainesville, Florida, United States, 32611

3

University of Miami

Miami, Florida, United States, 33125

4

Indiana University

Indianapolis, Indiana, United States, 46202