Recent Updates
Recently added Catalysts

I004

Phase 2

Pharmacokinetics | Small molecule | Other |Amphastar Pharmaceuticals, Inc.|Last Updated: Jul 22, 2026

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials2
Total Enrollment131

FDA Designations

No designations recorded

Clinical trial landscape

I004 · 2 trials · 3 indications

Phase 2 2
NCT07560150Comparison of the Pharmacokinetics (PK) and Pharmacodynamics (PD) Biosimilarity of Proposed Biosimilar/Interchangeable Rapid-Acting Insulin Aspart (I004) and NovoLog® After Single-Dose Subcutaneous Administration to Healthy VolunteersPharmacokinetics
COMPLETED62 Analytics
NCT05539872Comparison of the Pharmacokinetics (PK) and Pharmacodynamics (PD) Biosimilarity of Proposed Biosimilar Rapid-Acting Insulin Aspart (I004) and NovoLog After Single-Dose Subcutaneous Administration to Healthy VolunteersPharmacokinetics
COMPLETED69 Analytics
PHASE2COMPLETED
Comparison of the Pharmacokinetics (PK) and Pharmacodynamics (PD) Biosimilarity of Proposed Biosimilar/Interchangeable Rapid-Acting Insulin Aspart (I004) and NovoLog® After Single-Dose Subcutaneous Administration to Healthy Volunteers
PharmacokineticsUnlock trial analytics
PHASE2COMPLETED
Comparison of the Pharmacokinetics (PK) and Pharmacodynamics (PD) Biosimilarity of Proposed Biosimilar Rapid-Acting Insulin Aspart (I004) and NovoLog After Single-Dose Subcutaneous Administration to Healthy Volunteers
PharmacokineticsUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum Serum Insulin Aspart Concentration, CIAmax
Baseline (Time 0) to 12 hours post-dose

Pharmacokinetic (PK) blood samples will be collected from 60 minutes before dose through 12 hours post-dose. Serum will be isolated for analyzing the concentrations of Insulin Aspart

Area Under the Curve (AUC) of Insulin Aspart Serum Concentration From Time 0 to 12 Hours Post-dose, AUCIA(0-12h)
0 to 12 hours post-dose

Pharmacokinetic (PK) blood samples will be collected from 60 minutes before dose through 12 hours post-dose. Serum will be isolated for analyzing the concentrations of Insulin Aspart. AUCIA(0-12h) will be calculated from the concentration curves. Only AUC from 0 to 12 hours (AUCIA(0-12h)) is reported.

Maximum Glucose Infusion Rate, Gmax
From drug administration to 12 hours post-dose

Participants will undergo a euglycemic clamp, where blood glucose concentration will be held at a constant target level by adjusting exogenous glucose infusion rate (GIR) following drug administration. GIR will be recorded for the duration of the euglycemic clamp and used to evaluate the Pharmacodynamic (PD) response.

Area Under the Curve (AUC) for Glucose Infusion Rate From Time 0 to 12 Hours Post-dose, AUCG(0-12h)
From drug administration to 12 hours post-dose

Participants will undergo a euglycemic clamp, where blood glucose concentration will be held at a constant target level by adjusting exogenous glucose infusion rate (GIR) following drug administration. GIR will be recorded for the duration of the euglycemic clamp and used to evaluate the Pharmacodynamic (PD) response. AUCG(0-12h) will be calculated from the glucose infusion rate curves. Because GIR is recorded in mg/kg/min, the area under the GIR-time curve has units mg/kg.

Secondary Endpoints

Area Under the Curve (AUC) of Insulin Aspart Serum Concentration From Time 0 to Infinity, AUCIA(0-∞)
0 to infinity (extrapolated; concentrations measured through 12 hours post-dose)
Area Under the Curve (AUC) of Insulin Aspart Serum Concentration From Time 0 to 2 Hours Post-dose, AUCIA(0-2h)
0 to 2 hours post-dose
Time of Maximum Insulin Aspart Serum Concentration, tIAmax
Baseline (Time 0) to 12 hours post-dose
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Insulin Aspart, I004EXPERIMENTALParticipants who were dosed with I004
NovoLogACTIVE_COMPARATORParticipants who were dosed with NovoLog

Interventions

NameTypeDescription
I004DRUGDrug will be administered via subcutaneous injection into the abdominal wall of the peri-umbilical area with a dose of 0.2 units/kg based on the body weight measured at Day -1 of Treatment Period 1 under fasting condition.
NovoLogDRUGDrug will be administered via subcutaneous injection into the abdominal wall of the peri-umbilical area with a dose of 0.2 units/kg based on the body weight measured at Day -1 of Treatment Period 1 under fasting condition.
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Upon review, agree to participate and sign informed consent. * Healthy male and female subjects ≥ 18 to ≤ 65 years of age. * Body mass index (BMI) ≥ 18.5 to ≤ 29.9 kg/m2 * Weight ≥ 50 kg. * Fasting plasma glucose of \< 100 mg/dL (5.5 mmol/L) measured with YSI at site; one repe...

Countries:United States
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

MEDIUMAug 22, 2026NCT07560150TRIAL_REMOVED: changed
MEDIUMAug 22, 2026NCT07560150TRIAL_REMOVED: changed
MEDIUMAug 22, 2026NCT07560150TRIAL_REMOVED: changed
MEDIUMAug 22, 2026NCT07560150TRIAL_REMOVED: changed
HIGHJul 22, 2026NCT07560150Status: RECRUITING → COMPLETED
HIGHJul 22, 2026NCT07560150Status: RECRUITING → COMPLETED

Frequently asked questions about I004

What is I004 used for?

I004 is an investigational rapid-acting insulin aspart biosimilar being studied for pharmacokinetics and pharmacodynamics. It is intended to be comparable to NovoLog, a rapid-acting insulin aspart. The drug is being evaluated in healthy volunteers to assess its biosimilarity to the reference product.

Who makes I004?

I004 is being developed by Amphastar Pharmaceuticals, Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol AMPH. The company is conducting clinical trials to evaluate the drug's pharmacokinetic and pharmacodynamic profile as a proposed biosimilar to NovoLog.

What phase is I004 in?

I004 is in Phase 2 clinical development. Two Phase 2 trials have been completed, both focusing on pharmacokinetics and pharmacodynamics in healthy volunteers. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is I004 in?

I004 has been studied in two completed Phase 2 trials: NCT05539872 and NCT07560150. Both trials compared the pharmacokinetics and pharmacodynamics of I004 to NovoLog after single-dose subcutaneous administration in healthy volunteers. The trials were conducted in the United States with a combined enrollment of 131 participants.

Is I004 the same as NovoLog?

I004 is not the same as NovoLog, but it is being developed as a proposed biosimilar to NovoLog, which is a rapid-acting insulin aspart. The clinical trials for I004 are designed to demonstrate biosimilarity in pharmacokinetics and pharmacodynamics between the two products.

How does I004 work?

I004 is a rapid-acting insulin aspart, a form of insulin that works by replacing the insulin normally produced by the body to help regulate blood sugar levels. As a biosimilar to NovoLog, it is designed to have a similar mechanism of action, providing rapid glucose-lowering effects after subcutaneous injection.