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A Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Immunogenicity of Efimosfermin Alfa Administered as a Single Dose to Healthy Participants of Chinese, Japanese, and White/\u200bEuropean Ancestry

A Phase 1, Randomized, Placebo-Controlled, Double-Blind, Parallel-Group Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Immunogenicity of Efimosfermin Alfa Administered as a Single Dose to Healthy Participants of Chinese, Japanese, and White/European Ancestry

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07335198
Enrollment
30
Registered
2026-01-13
Start date
2026-03-05
Completion date
2026-08-13
Last updated
2026-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-alcoholic Fatty Liver Disease

Keywords

Efimosfermin alfa, Placebo, First time in Asia, Chinese, Japanese, White/Europeans, Pharmacokinetics, Safety, Immunogenicity

Brief summary

This is a first time in Asia (FTIA) study designed to evaluate the safety, tolerability, pharmacokinetic (PK) and immunogenicity of efimosfermin alfa to healthy participants of Chinese, Japanese, and White/European ancestry.

Interventions

Efimosfermin alfa to be administered

DRUGPlacebo

Placebo to be administered

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Masking description

This is a double blinded study.

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

Participants who are generally healthy as determined by medical evaluation * Body weight at least 50.0 kilograms (kg) for male participants or at least 45.0 kg for female participants * Body mass index (BMI) within the range of 18.0 to 28.0 kilograms per square meter (kg/m\^2) (inclusive) * Male and female participants * Participants of Chinese ancestry are eligible if born in mainland China, Hong Kong, or Taiwan, and descendant of 2 ethnic Chinese parents and 4 ethnic Chinese grandparents; and have lived outside China, Hong Kong, or Taiwan for less than 10 years at the time of screening. * Participants of Japanese ancestry are eligible if born in Japan and descendant of 2 ethnic Japanese parents and 4 ethnic Japanese grandparents; and have lived outside Japan for less than 10 years at the time of screening. * Participants of White/European ancestry are eligible if self-identified as being of White/European ancestry, (that is \[i.e.\], from the original peoples of Europe) irrespective of current place of residence; and descendant of 2 parents and 4 grandparents of White/European ancestry (i.e., from the original peoples of Europe) irrespective of place of birth or current place of residence.

Exclusion criteria

* History or presence of disorders capable of significantly altering the absorption, metabolism, or elimination of drugs; constituting a risk when taking the study intervention or interfering with the interpretation of data. * Current or chronic history of liver or biliary disease with the exception of Gilbert's syndrome or asymptomatic gallstones. * History of pancreatic injury, pancreatitis or other pancreatic disease; history of Type one Diabetes Mellitus (T1DM) or positive glutamic acid decarboxylase auto-antibodies, or major Type two Diabetes Mellitus (T2DM) complications including severe gastroparesis and autonomic neuropathy. * Abnormal blood pressure (defined as systolic Blood Pressure \[BP\] more than equal \[\>=\]140 millimeters of mercury \[mmHg\] or diastolic BP \>=90 mmHg measured based on the average of triplicate BP readings). * History of metabolic bone disorders including osteoporosis, osteopenia, or osteomalacia. * History of malignancy of any organ system (other than localized basal cell carcinoma of the skin), treated or untreated, within the past 5 years. * Alanine transaminase (ALT) more than (\>)1.5 \* upper limit of normal (ULN). * Total bilirubin \>1.5 \* ULN * Known bleeding disorder. * History of immunodeficiency diseases, including a positive test result for human immunodeficiency virus (HIV). * Corrected QT Interval using Fridericia's Formula (QTcF) \>=450 millisecond (msec)(male) or \>=470 msec (female) at Screening Visit based on the average of triplicate ECGs. * Use of statins, other lipid lowering medications or hypertension medications unless on a stable dose for at least 3 months. * Use of other investigational drugs at the time of enrollment, or within 5 half-lives of enrollment, or within 30 days, whichever was longer; or longer if required by local regulations. * Participants who have received native FGF21 or a FGF21 analog at any time in the past. * Intended use of over the counter (OTC) or prescription medication (including herbal medications) within 7 days prior to dosing and for the duration of study participation. * Live vaccine within 14 days prior to dosing and non-live vaccines for 7 days prior study dosing. * Current enrolment or participation in another clinical trial within the last 30 days before signing consent of current study. * Presence of hepatitis B surface antigen (HBsAg) or hepatitis C antibody at screening or within 3 months prior to the first dose of study intervention * A positive pre-study drug/alcohol screen

Design outcomes

Primary

MeasureTime frame
Number of participants with Adverse Events (AEs), treatment related AEs and serious adverse events (SAEs)Up to 90 days
Number of participants with clinically significant changes in hematology, chemistry and urinalysis parametersUp to 90 days
Number of participants with clinically significant changes in 12 Lead electrocardiogram (ECG)Up to 90 days
Number of participants with clinically significant changes in vital signsUp to 90 days
Area under the serum drug concentration versus time curve from time zero to the time of the last quantifiable concentration (AUC[0-t]) of efimosfermin alfaUp to 90 days
Area under the serum drug concentration versus time curve from time zero extrapolated to infinity (AUC[0-inf]) of efimosfermin alfaUp to 90 days
Maximum observed serum drug concentration, determined directly from the serum concentration-time data (Cmax) of efimosfermin alfaUp to 90 days

Secondary

MeasureTime frame
Time to maximum observed serum drug concentration (Tmax) of efimosfermin alfaUp to 90 days
Apparent terminal phase half-life (t1/2) of efimosfermin alfaUp to 90 days
Area under the serum drug concentration versus time curve from time zero to 45 days [AUC(0-45days)] of efimosfermin alfaUp to 45 days
Area under the serum drug concentration versus time curve from time zero to 60 days [AUC(0-60days)] of efimosfermin alfaUp to 60 days
Area under the serum drug concentration versus time curve from time zero to 90 days [AUC(0-90days)] of efimosfermin alfaUp to 90 days
Time of last quantifiable plasma drug concentration (Tlast) of efimosfermin alfaUp to 90 days
Apparent clearance (CL/F) of efimosfermin alfaUp to 90 days
Apparent volume of distribution (Vz/F) of efimosfermin alfaUp to 90 days

Countries

New Zealand

Contacts

STUDY_DIRECTORGSK Clinical Trials

GlaxoSmithKline

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 16, 2026