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Study identifier: NCT06049082 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

A Study of KB408 for the Treatment of Alpha-1 Antitrypsin Deficiency

Condition: Alpha 1-Antitrypsin Deficiency  ·  Sponsor: Krystal Biotech, Inc.

PhasePhase 1
Planned participants15
Who can joinAll sexes, 18 Years to 70 Years
Healthy volunteersNo

About this study

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. Repeat dosing will be evaluated at the mid dose level. Subjects taking intravenous AAT augmentation therapy are not required to wash out from IV AAT in the low and mid dose cohorts. In the repeat dose and the high dose cohorts, subjects must wash out from IV AAT for at least 10 days, as applicable.

This description comes directly from the study's public registry record.

Talk to the study team

David Sweet, MD, PhD  ·  412-586-5830  ·  dsweet@krystalbio.com

Brittani Agostini, RN, CCRC  ·  412-586-5830  ·  bagostini@krystalbio.com

Always discuss trial participation with your own doctor first.

Locations (3)

University of Florida, GainesvilleGainesville, Florida, United StatesRecruiting
Medical University of South CarolinaCharleston, South Carolina, United StatesRecruiting
Renovatio ClinicalThe Woodlands, Texas, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06049082