The goal of this clinical trial is to evaluate whether Insulex® R demonstrates similar pharmacokinetic (PK) and pharmacodynamic (PD) profiles compared to Humulin® R after a single subcutaneous dose of 0.3 units/kg in healthy adult volunteers.
This Phase 1, randomized, double-blind, two-period, two-sequence crossover clinical trial aims to evaluate the pharmacokinetic (PK) and pharmacodynamic (PD) bioequivalence of Insulex® R compared to Humulin® R after a single subcutaneous dose of 0.3 units/kg in healthy adult subjects. The study was designed in accordance with international regulatory guidelines, including the U.S. Food and Drug Administration (FDA) guidance for demonstrating biosimilarity of insulin products and the European Medicines Agency (EMA) guidelines for the clinical development of biosimilar insulins. Each subject underwent a Screening Visit (Visit 1), two 1-day in-house Treatment Periods (Visit 2 and Visit 3), and a Follow-up Visit (Visit 4) to performed safety procedures. The washout period between Treatment Periods was 7 to 14 days. During each Treatment Period, subjects will receive a single subcutaneous dose of either Insulex® R or Humulin® R under euglycemic glucose clamp conditions. Blood samples will be collected at prespecified intervals to measure serum insulin and C-peptide concentrations. Glucose infusion rates will be monitored continuously to assess PD response. The rigorous assessment of PK and PD profiles under controlled clamp conditions is essential to confirm biosimilarity and ensure therapeutic equivalence. Successful demonstration of bioequivalence will provide a safe, effective, and cost-accessible recombinant human rapid-acting insulin option for patients requiring insulin therapy.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
40
Investigational insulin, Insulex® R (soluble human insulin, biosimilar)
Marketed reference insulin, Humulin® R (soluble human insulin, biosimilar)
Prosciento, Inc
San Diego, California, United States
AUCINS_0-12h
Area under the insulin concentration - time curve (AUC) from 0 to 12 hours; primary endpoint to assess PK profile according EMA guideline
Time frame: 12 hours
Cmax
Maximum insulin concentration; primary endpoint to assess the PK profile according EMA guideline
Time frame: 12 hours
AUCGIR_0-12h
Area under the glucose infusion rate (GIR) time curve from 0 to 12 hours; primary endpoint to assess the PD profile according EMA guideline
Time frame: 12 hours
GIRmax
Maximum Glucose Infusion Rate; primary endpoint to assess PD profile according EMA guideline
Time frame: 12 hours
AUCINS_0-2h
Area under the partial insulin concentration - time curves (AUC) from 0 to 4 hours; to assess PK profile
Time frame: 4 hours
AUCINS_0-6h
Area under the partial insulin concentration - time curves (AUC) from 0 to 6 hours, to assess PK profile
Time frame: 6 hours
AUCINS_6-12h
Area under the partial insulin concentration - time curves (AUC) from 6 to 12 hours; to assess PK profile
Time frame: 6 hours
AUCINS_0-∞
Area under the serum insulin concentration curve from 0 to infinity (if possible); to assess PK profile
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Time frame: 12 hours
Tmax
Time to maximum insulin concentration; to assess PK profile
Time frame: 12 hours
t50%-INS (early)
Time to half-maximum insulin concentration before maximum insulin concentration (Cmax); to assess PK profile
Time frame: 12 hours
t50%-INS (late)
Time to half-maximum insulin concentration after maximum insulin concentration(Cmax); to assess PK profile
Time frame: 12 hours
t½
Terminal elimination half - life; to assess PK profile
Time frame: 12 hours
λz
Terminal elimination rate constant; to assess PK profile
Time frame: 12 hours
AUCGIR_0-2h
Area under glucose infusion rate (GIR) time curve from 0 to 2 hours; to assess PD profile
Time frame: 2 hours
AUCGIR_0-6h
Area under glucose infusion rate (GIR) time curve from 0 to 6 hours; to assess PD profile
Time frame: 6 hours
AUCGIR_6-12h
Area under glucose infusion rate (GIR) time curve from 6 to 12 hours; to assess PD profile
Time frame: 6 hours
tGIR_max
Time to maximum glucose infusion rate (GIR); to assess PD profile
Time frame: 12 hours
t50%-GIR (early)
Time to half - maximum glucose infusion rate (GIR) before maximum glucose infusion rate (GIRmax); to assess PD profile
Time frame: 12 hours
t50%-GIR (late)
Time to half - maximum glucose infusion rate (GIR) after maximum glucose infusion rate (GIRmax); to assess PD profile
Time frame: 12 hours
tGIR_onset
Time to start of glucose infusion rate (GIR) post - dose; to assess PD profile
Time frame: 12 hours
Adverse Events
The number and percentage of subjects with TEAEs will be summarized by MedDRA-coded SOCs and PTs. All TEAEs will be assessed for severity and for relation to study drug.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Number of participants with clinical findings on physical examination from baseline (screening) to follow-up visit.
Physical examination findings considered clinically significant by the PI will be summarized by body system with counts and percentages of subjects for values at treatment visits.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Number of participants with significant changes observed from baseline (screening) to follow-up visit in safety laboratory results (hematology, biochemistry, and urinalysis) for each analite.
Value outside the normal range (as defined by the laboratory) or deemed clinically significant at the Investigator's discretion in safety laboratory results (hematology, serum chemistry, urinalysis) will be recorded and reported as the number of participants with significant changes in safety laboratoriy results.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Number of participants with significant changes observed from baseline (screening) to follow-up visit in ECG parameters.
The following parameters will be recorded from thsubject's ECG trace as calculated by the machine algorithm: heart rate, QT interval, PR interval, QRS interval, RR interval, and QTc (corrected) using the Fridericia correction.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Injection site reactions
Evaluated quantitatively using the Grading Scale for Injection Site Reaction (based on the Guidance for Industry-Toxicity Grading Scale for Healthy Adult and Adolescent Volunteers Enrolled in Preventive Vaccine Clinical Trials, 2007); which assesses pain, tenderness, erythema/redness, and swelling on a four-point scale: Grade 1 - Mild (does not interfere with activity), Grade 2 - Moderate (interferes with activity/discomfort when moving), Grade 3 - Severe (significant discomfort at rest), and Grade 4 - Potentially Life Threatening (Emergency Room visit or hospitalization). For erythema and swelling, the local reaction measured at the single largest diameter should be recorded. .
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Number of participants with significant changes observed from baseline (screening) to follow-up visit in body temperature.
Body temperature in °C. Any clinically significant findings at the investigator's discretion and/or outside the range identified for the vital sign assessment.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Number of participants with significant changes observed from baseline (screening) to follow-up visit in blood pressure.
Given by the measurement of systolic and diastolic blood pressure in mmHg. Any clinically significant findings at the investigator's discretion and/or outside the range identified for the vital sign assessment.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1)
Number of participants with significant changes observed from baseline (screening) to follow-up visit in heart rate.
Reading taken in beats per minute (bpm) obtained from the oximeter placed on the tip of the index finger. Any clinically significant findings at the investigator's discretion and/or outside the range identified for the vital sign assessment.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1).
Number of participants with significant changes observed from baseline (screening) to follow-up visit in respiratory rate.
Reading taken in breaths per minute (bpm) obtained from the oximeter placed on the tip of the index finger. Any clinically significant findings at the investigator's discretion and/or outside the range identified for the vital sign assessment.
Time frame: From screening to follow-up visit (up to 30 days after Visit 1).