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AMG 691

Phase 1

Asthma | Small molecule | Respiratory |Amgen Inc.|Last Updated: Aug 27, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment21

FDA Designations

No designations recorded

Clinical trial landscape

AMG 691 · 2 trials · 2 indications

Phase 1 2
NCT07745907A Phase 1 Trial of AMG 691 in Healthy Chinese and Japanese VolunteersHealthy Participants
RECRUITING28 Analytics
NCT06637371A Phase 1, Randomized, Double-blind, Placebo-controlled Study Evaluating AMG 691 in Healthy Participants and Participants With Mild-to-Moderate AsthmaAsthma
ACTIVE NOT_RECRUITING21 Analytics
PHASE1RECRUITING
A Phase 1 Trial of AMG 691 in Healthy Chinese and Japanese Volunteers
Healthy ParticipantsUnlock trial analytics
PHASE1ACTIVE NOT_RECRUITING
A Phase 1, Randomized, Double-blind, Placebo-controlled Study Evaluating AMG 691 in Healthy Participants and Participants With Mild-to-Moderate Asthma
AsthmaUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum Observed Serum Concentration (Cmax) of AMG 691
Day 1 up to Day 154
Area Under the Serum Concentration Time Curve (AUC) from Time Zero to Time of Last Quantifiable Concentration (AUC0-t) of AMG 691
Up to Day 154
Area Under the Serum concentration Time Curve from Time Zero to Infinity (AUC0-inf) of AMG 691
Up to Day 154
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)
Up to approximately 11 months

An adverse event (AE) is any untoward medical occurrence in a clinical study participant irrespective of a causal relationship with the study treatment. TEAEs are any event that occurred after the participant received study treatment. Serious AEs (SAEs) are defined as any untoward medical occurrence that, meet at least 1 of the following serious criteria: Immediately life-threatening, requires in-patient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect. Includes AEs of interest (AEOI), and AEs leading to discontinuation.

Secondary Endpoints

Number of Participants with Treatment-emergent Adverse Events (TEAEs)
Day 1 to end of trial (approximately 154 days)
Number of Participants with Serious Adverse Events (SAEs)
From screening (Day -28) up to end of trial (approximately 154 days)
Number of Participants Who Develop Anti-AMG 691 Antibodies
Up to Day 154
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
Cohort 1EXPERIMENTALChinese participants will receive AMG 691 at the Level A dose administered subcutaneously (SC)
Cohort 2EXPERIMENTALJapanese participants will receive AMG 691 at the Level A dose administered SC
Cohort 3EXPERIMENTALChinese participants will receive AMG 691 at the Level B dose administered SC
Cohort 4EXPERIMENTALJapanese participants will receive AMG 691 at the Level B dose administered SC
Part A: Single Ascending Dose (SAD)EXPERIMENTALHealthy participants will be randomized in a 3:1 ratio to receive either AMG 691 or placebo.
Part B: Multiple Ascending Dose (MAD)EXPERIMENTALHealthy participants will be randomized in a 3:1 ratio to receive either AMG 691 or placebo.
Part C: Multiple DoseEXPERIMENTALParticipants with mild-to-moderate asthma will be randomized in a 2:1 ratio to receive either AMG 691 or placebo.

Interventions

NameTypeDescription
AMG 691DRUGAMG 691 will be administered subcutaneously
PlaceboDRUGSC injection
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Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy male or female participants, 18 to 60 years of age. * First-generation Chinese ancestry (born in China, Hong Kong, Taiwan, or Macau with 2 Chinese parents and 4 Chinese grandparents) or first-generation Japanese ancestry (born in Japan with 2 Japanese parents and 4 Jap...

Countries:United StatesAustraliaBelgiumCanadaUnited Kingdom
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Recent Changes (Last 90 Days)

LOWAug 27, 2026NCT07745907lastUpdatePostDate: changed
LOWAug 27, 2026NCT07745907lastUpdatePostDate: changed
LOWAug 4, 2026NCT07745907NEW_TRIAL: changed
LOWAug 4, 2026NCT07745907NEW_TRIAL: changed
HIGHJun 18, 2026NCT06637371Status: RECRUITING → ACTIVE_NOT_RECRUITING
HIGHJun 18, 2026NCT06637371Status: RECRUITING → ACTIVE_NOT_RECRUITING
HIGHJun 18, 2026NCT06637371Status: RECRUITING → ACTIVE_NOT_RECRUITING
HIGHJun 18, 2026NCT06637371Status: RECRUITING → ACTIVE_NOT_RECRUITING

Frequently asked questions about AMG 691

What is AMG 691 used for?

AMG 691 is an investigational small molecule being developed by Amgen Inc. for the treatment of asthma. It is currently being studied in Phase 1 clinical trials in healthy participants and in participants with mild-to-moderate asthma. The drug is not yet approved and remains in early clinical development.

Who makes AMG 691?

AMG 691 is being developed by Amgen Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol AMGN. The company is conducting Phase 1 clinical trials to evaluate the safety and tolerability of AMG 691 in healthy participants and in participants with asthma.

What phase is AMG 691 in?

AMG 691 is in Phase 1 clinical development. It is being evaluated in two early-stage trials: one in healthy participants and participants with mild-to-moderate asthma, and another in healthy Chinese and Japanese volunteers. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is AMG 691 in?

AMG 691 is being studied in two Phase 1 trials. NCT06637371 is a randomized, double-blind, placebo-controlled study in healthy participants and participants with mild-to-moderate asthma, conducted in the United States, Australia, Belgium, Canada, and the United Kingdom. NCT07745907 is a trial in healthy Chinese and Japanese volunteers, conducted in the United States.

Is AMG 691 the same as another drug?

AMG 691 is the only name provided for this investigational drug. No alternative names have been reported. It is a small molecule being developed by Amgen Inc. for respiratory conditions, specifically asthma, and is currently in Phase 1 clinical trials.