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Clinical Trials/NCT07335198
NCT07335198CompletedPhase 1

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

GlaxoSmithKline1 site in 1 country30 target enrollmentStarted: March 5, 2026Last updated:
Conditions
Interventions
Drugs

Trial Snapshot

Phase
Phase 1
Status
Completed
Enrollment
30
Locations
1
Primary Endpoint
Area under the serum drug concentration versus time curve from time zero extrapolated to infinity (AUC[0-inf]) of efimosfermin alfa

Study Overview

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.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Treatment
Masking
Triple (Participant, Care Provider, Investigator)

Masking Description

This is a double blinded study.

Eligibility Criteria

Ages
18 Years to 55 Years (Adult)
Sex
All
Accepts 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

Arms & Interventions

Placebo in participants of White/European Ancestry

Placebo Comparator

Healthy participants of White/European ancestry will be randomized to receive Placebo.

Intervention: Placebo (Drug)

Efimosfermin alfa in participants of Chinese Ancestry

Experimental

Healthy participants of Chinese ancestry will be randomized to receive efimosfermin alfa.

Intervention: Efimosfermin alfa (Drug)

Placebo in participants of Chinese Ancestry

Placebo Comparator

Healthy participants of Chinese ancestry will be randomized to receive Placebo.

Intervention: Placebo (Drug)

Efimosfermin alfa in participants of Japanese Ancestry

Experimental

Healthy participants of Japanese ancestry will be randomized to receive efimosfermin alfa.

Intervention: Efimosfermin alfa (Drug)

Placebo in participants of Japanese Ancestry

Placebo Comparator

Healthy participants of Japanese ancestry will be randomized to receive Placebo.

Intervention: Placebo (Drug)

Efimosfermin alfa in participants of White/European Ancestry

Experimental

Healthy participants of White/European ancestry will be randomized to receive efimosfermin alfa.

Intervention: Efimosfermin alfa (Drug)

Outcomes

Primary Outcomes

Area under the serum drug concentration versus time curve from time zero extrapolated to infinity (AUC[0-inf]) of efimosfermin alfa

Time Frame: Up to 90 days

Number of participants with Adverse Events (AEs), treatment related AEs and serious adverse events (SAEs)

Time Frame: Up to 90 days

Number of participants with clinically significant changes in hematology, chemistry and urinalysis parameters

Time Frame: Up to 90 days

Number of participants with clinically significant changes in vital signs

Time Frame: Up to 90 days

Number of participants with clinically significant changes in 12 Lead electrocardiogram (ECG)

Time Frame: Up 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 alfa

Time Frame: Up to 90 days

Maximum observed serum drug concentration, determined directly from the serum concentration-time data (Cmax) of efimosfermin alfa

Time Frame: Up to 90 days

Secondary Outcomes

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

Investigators

Sponsor Class
Industry
Responsible Party
Sponsor

Study Sites (1)

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