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Clinical Trial Summary

The Sponsor is developing KB408, a replication-defective, non-integrating herpes simplex virus type 1 (HSV-1)-derived vector engineered to deliver functional full-length human SERPINA1 to the airways of people with alpha-1 antitrypsin deficiency (AATD) via nebulization. This study is designed to evaluate safety and pharmacodynamics of KB408 in adults with AATD with a PI*ZZ or PI*ZNull genotype. Three planned dose levels of KB408 will be evaluated in single dose escalation cohorts. Subjects taking intravenous AAT augmentation therapy are not required to wash out from IV AAT in the low and mid dose cohorts. At the high dose, two cohorts will be conducted in parallel to evaluate patients on and off IV augmentation therapy.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT06049082
Study type Interventional
Source Krystal Biotech, Inc.
Contact David Chien, MD
Phone 412-586-5830
Email dchien@krystalbio.com
Status Recruiting
Phase Phase 1
Start date February 15, 2024
Completion date May 2026

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