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KRRO-110

Phase 1

Alpha-1 Anti-trypsin Deficiency | Small molecule | Other |Korro Bio, Inc.|Last Updated: Apr 17, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment64

FDA Designations

No designations recorded
Trial Stopped -NCT06677307: The study was terminated for business decision reasons.

Clinical trial landscape

KRRO-110 · 1 trial · 2 indications

Phase 1 1
NCT06677307A Phase 1/2a, Single- and Multiple-dose Escalation Study of KRRO-110Alpha-1 Anti-trypsin Deficiency
TERMINATED42 Analytics
PHASE1TERMINATED
A Phase 1/2a, Single- and Multiple-dose Escalation Study of KRRO-110
Alpha-1 Anti-trypsin DeficiencyUnlock trial analytics

Study Endpoints

Primary Endpoints

Safety and Tolerability
From Day 1 to Day 43 in the SAD and from Day 1 to Day 85 in the MAD

Type, frequency, and severity of treatment-emergent adverse events (TEAEs)

Secondary Endpoints

Pharmacokinetics (PK) of KRRO-110
Day 1 to Day 43 (SAD), and Day 1 to Day 85 (MAD)
Pharmacodynamics (PD) of KRRO-110
Day 1 to Day 43 (SAD), and Day 1 to Day 85 (MAD)
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm 1: KRRO-110 (Part A and Part B)EXPERIMENTALKRRO-110 is an RNA editing oligonucleotide encapsulated in a lipid nanoparticle (LNP) administered by intravenous (IV) infusion as a single dose in Part A (SAD), multi-dose in Part B (MAD).
Arm 2: Placebo (Part A only)PLACEBO_COMPARATORPlacebo, IV administration

Interventions

NameTypeDescription
KRRO-110DRUGKRRO-110 drug product, IV
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersYes
Study Sites5

Inclusion Criteria: Part A SAD cohort Inclusion Criteria (Healthy Volunteers) * Adult male or female participants, 18 to 65 years of age * Documented PiMM genotype * Participants who are willing to and able to provide signed written informed consent PiZZ Genotype (Part A SAD and Part B MAD cohort...

Countries:AustraliaNew Zealand
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Recent Changes (Last 90 Days)

MEDIUMMay 26, 2026NCT06677307TRIAL_REMOVED: changed
LOWMay 24, 2026NCT06677307studyFirstPostDate: changed

Frequently asked questions about KRRO-110

What is KRRO-110 used for?

KRRO-110 is an investigational small molecule being developed for the treatment of Alpha-1 Antitrypsin Deficiency (AATD), a genetic condition that can lead to lung and liver disease. It is currently in Phase 1 clinical development and has not been approved by regulatory authorities.

What does KRRO-110 target?

KRRO-110 is a small molecule designed to address Alpha-1 Antitrypsin Deficiency. The specific molecular target has not been disclosed in available information, so its precise mechanism of action is not publicly detailed.

Who is developing KRRO-110?

KRRO-110 is being developed by Korro Bio, Inc., a biopharmaceutical company. The company's stock is traded under the ticker symbol KRRO.

What phase is KRRO-110 in?

KRRO-110 is in Phase 1 clinical development. It is an investigational drug and has not yet received regulatory approval. The ongoing clinical trial is a Phase 1/2a study designed to evaluate the safety and tolerability of the drug.

What clinical trials is KRRO-110 in?

KRRO-110 is being studied in a Phase 1/2a clinical trial with the identifier NCT06677307. This trial is a single- and multiple-dose escalation study enrolling participants with Alpha-1 Antitrypsin Deficiency, as well as healthy volunteers, at sites in Australia and New Zealand.

Is KRRO-110 the same as any other drug?

No alternative names for KRRO-110 have been disclosed. It is identified solely by its development code KRRO-110 and is not known to be marketed under any other name.