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CompletedNCT05067270Updated Oct 4, 2023Results posted

A Study of Infusion Site Pain After Infusion of Excipients in Participants With Type 1 Diabetes Mellitus

A Phase 1 interventional study of Sodium Citrate and Treprostinil in Type 1 Diabetes Mellitus, sponsored by Eli Lilly and Company. Completed at 2 sites in Germany. Open to participants aged 18 Years to 69 Years. Per ClinicalTrials.gov, last updated 2023-10-04.

Sponsored by Eli Lilly and Company · Phase 1, Interventional, and Basic science

Phase
Phase 1
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years to 69 Years
Sex
All
01

Study summary

The main purpose of this study is to evaluate the effect of excipients sodium citrate and treprostinil without insulin on local infusion site pain in participants with type 1 diabetes mellitus (T1DM) on continuous subcutaneous insulin infusion (CSII). The study may last up to 36 days including a screening period and 3 visits.

02

Conditions studied

  • Type 1 Diabetes Mellitus

Keywords

  • Humalog - Insulin lispro
  • Citrate
  • Infusion Site Pain
  • Excipients
03

In context

Diabetes Mellitus

10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.

This study's enrollment of 40 is below the median of 80 across 8,367 interventional studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

Eli Lilly and Company is the lead sponsor of 2,048 studies on the registry; 140 are open to participants now.

Of its 521 completed or terminated interventional studies of FDA-regulated products, 341 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 69 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • T1D for at least 1 year and continuously using insulin for at least 1 year
  • Using an insulin pump for at least the last 6 months
  • Have hemoglobin A1c (HbA1c) value of ≤ 9.0%
  • Have a body mass index (BMI) within the range of 18.5 to 35.0 kilograms per square meter (kg/m²)
  • Have medical and laboratory test results that are acceptable for the study
  • Have venous access sufficient to allow for blood sampling

Exclusion criteria

Exclusion Criteria:

  • Hemophilia or any other bleeding disorder
  • Have a pathologic tuning fork test as assessed with a Rydel-Seiffer tuning fork
  • Are taking anesthetics or pain medication regularly or intermittently which could interfere with interpretation of pain scale
  • Have had more than 1 episode of severe hypoglycemia (defined as requiring assistance due to neurologically disabling hypoglycemia) within the last 90 days prior to screening
  • Have had more than 1 emergency room visit or hospitalization due to poor glucose control (hyperglycemia or diabetic ketoacidosis) within the last 6 months prior to screening
  • Have any hypersensitivity or allergy to any of the diluents or excipients used in this trial
  • Have or used to have health problems or medical test results that, in the opinion of the doctor, could make it unsafe to participate, or could interfere with understanding the results of the study
  • Have participated, within the last 30 days, in a clinical trial involving an investigational product
  • Have used or are currently using Lyumjev® as part of their standard insulin therapy
05

Study design

Phase
Phase 1
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
40 participants (actual)

Study arms

  • Experimental
    Sequence 1:Arm Region,Abdomen 6mm,Buttock,Abdomen 9mm,Thigh

    Participants had cannulas inserted into each of the designated infusion sites (6 millimeter (mm) for all the sites. Additionally for the abdominal area only, a 9 mm cannula was also inserted into the opposite side of the lower abdomen), and the first infusion site was initiated subcutaneously (SC) with 15 millimolar (mM) sodium citrate and 1 microgram per milliliter (μg/mL) treprostinil in Humalog diluent with 5 mM magnesium chloride (without insulin) solution at a basal infusion rate of 1 unit per hour (U/h). The same procedure occurred at subsequent infusion sites with an approximately 30-minute (min) interval between each initiation. Approximately 3, 6, and 9 hours after the start of the basal infusion, a bolus dose of 15 U was delivered at quick bolus speed (15 U/min) to each infusion site according to the treatment sequence with an approximately 30-minute interval between infusion sites.

    Drug: Sodium Citrate · Drug: Treprostinil · Drug: Humalog diluent · Drug: Magnesium Chloride

  • Experimental
    Sequence 2:Abdomen 6mm,Abdomen 9mm,Arm Region,Thigh,Buttock

    Participants had cannulas inserted into each of the designated infusion sites (6 mm for all the sites. Additionally for the abdominal area only, a 9 mm cannula was also inserted into the opposite side of the lower abdomen), and the first infusion site was initiated with 15 mM sodium citrate and 1 μg/mL treprostinil in Humalog diluent with 5 mM magnesium chloride (without insulin) solution at a basal infusion rate of 1 U/h. The same procedure occurred at subsequent infusion sites with an approximately 30-minute interval between each initiation. Approximately 3, 6, and 9 hours after the start of the basal infusion, a bolus dose of 15 U was delivered at quick bolus speed (15 U/min) to each infusion site according to the treatment sequence with an approximately 30-minute interval between infusion sites.

    Drug: Sodium Citrate · Drug: Treprostinil · Drug: Humalog diluent · Drug: Magnesium Chloride

  • Experimental
    Sequence 3:Abdomen 9mm,Thigh,Abdomen 6mm,Buttock,Arm Region

    Participants had cannulas inserted into each of the designated infusion sites (6 mm for all the sites. Additionally for the abdominal area only, a 9 mm cannula was also inserted into the opposite side of the lower abdomen), and the first infusion site was initiated with 15 mM sodium citrate and 1 μg/mL treprostinil in Humalog diluent with 5 mM magnesium chloride (without insulin) solution at a basal infusion rate of 1 U/h. The same procedure occurred at subsequent infusion sites with an approximately 30-minute interval between each initiation. Approximately 3, 6, and 9 hours after the start of the basal infusion, a bolus dose of 15 U was delivered at quick bolus speed (15 U/min) to each infusion site according to the treatment sequence with an approximately 30-minute interval between infusion sites.

    Drug: Sodium Citrate · Drug: Treprostinil · Drug: Humalog diluent · Drug: Magnesium Chloride

  • Experimental
    Sequence 4:Thigh,Buttock,Abdomen 9mm,Arm Region,Abdomen 6mm

    Participants had cannulas inserted into each of the designated infusion sites (6 mm for all the sites. Additionally for the abdominal area only, a 9 mm cannula was also inserted into the opposite side of the lower abdomen), and the first infusion site was initiated with 15 mM sodium citrate and 1 μg/mL treprostinil in Humalog diluent with 5 mM magnesium chloride (without insulin) solution at a basal infusion rate of 1 units per U/h. The same procedure occurred at subsequent infusion sites with an approximately 30-minute interval between each initiation. Approximately 3, 6, and 9 hours after the start of the basal infusion, a bolus dose of 15 U was delivered at quick bolus speed (15 U/min) to each infusion site according to the treatment sequence with an approximately 30-minute interval between infusion sites.

    Drug: Sodium Citrate · Drug: Treprostinil · Drug: Humalog diluent · Drug: Magnesium Chloride

  • Experimental
    Sequence 5:Buttock,Arm Region,Thigh,Abdomen 6mm,Abdomen 9mm

    Participants had cannulas inserted into each of the designated infusion sites (6 mm for all the sites. Additionally for the abdominal area only, a 9 mm cannula was also inserted into the opposite side of the lower abdomen), and the first infusion site was initiated with 15 mM sodium citrate and 1 μg/mL treprostinil in Humalog diluent with 5 mM magnesium chloride (without insulin) solution at a basal infusion rate of 1 U/h. The same procedure occurred at subsequent infusion sites with an approximately 30-minute interval between each initiation. Approximately 3, 6, and 9 hours after the start of the basal infusion, a bolus dose of 15 U was delivered at quick bolus speed (15 U/min) to each infusion site according to the treatment sequence with an approximately 30-minute interval between infusion sites.

    Drug: Sodium Citrate · Drug: Treprostinil · Drug: Humalog diluent · Drug: Magnesium Chloride

Interventions

  • DrugSodium Citrate

    Administered SC infusion.

  • DrugTreprostinil

    Administered SC infusion.

  • DrugHumalog diluent

    Administered SC infusion.

  • DrugMagnesium Chloride

    Administered SC infusion.

06

What researchers measure

Primary outcomes

  1. Visual Analog Scale (VAS) Pain Score in the Abdominal, Arm, Thigh, and Buttock Areas

    The Infusion site pain VAS score is a participant administered single item scale designed to measure pain using a 0-100 millimeter (mm) horizontal VAS. Overall severity of participant's pain is indicated by placing a single mark on the horizontal 100 mm scale from 0 mm (no pain) to 100 mm (worst imaginable pain).

    Time frame: Day 1: 1 min post bolus.

07

Results

Posted Oct 4, 2023

Participant flow

Participants were randomly assigned to 1 of 5 infusion site sequence below and received the study treatment in each period. Cannulas were inserted into each of the designated infusion sites (6 millimeter (mm) for all the sites. Additionally for the abdominal area only, a 9 mm cannula was also inserted into the opposite side of the lower abdomen).

Period 1
Participant flow — Period 1
MilestoneSequence 1:Arm Region,Abdomen 6mm,Buttock,Abdomen 9mm,ThighSequence 2:Abdomen 6mm,Abdomen 9mm,Arm Region,Thigh,ButtockSequence 3:Abdomen 9mm,Thigh,Abdomen 6mm,Buttock,Arm RegionSequence 4:Thigh,Buttock,Abdomen 9mm,Arm Region,Abdomen 6mmSequence 5:Buttock,Arm Region,Thigh,Abdomen 6mm,Abdomen 9mm
Started88888
Received at least one infusion88888
Completed88888
Not completed00000
Period 2
Participant flow — Period 2
MilestoneSequence 1:Arm Region,Abdomen 6mm,Buttock,Abdomen 9mm,ThighSequence 2:Abdomen 6mm,Abdomen 9mm,Arm Region,Thigh,ButtockSequence 3:Abdomen 9mm,Thigh,Abdomen 6mm,Buttock,Arm RegionSequence 4:Thigh,Buttock,Abdomen 9mm,Arm Region,Abdomen 6mmSequence 5:Buttock,Arm Region,Thigh,Abdomen 6mm,Abdomen 9mm
Started88888
Received at least one infusion88888
Completed88888
Not completed00000
Period 3
Participant flow — Period 3
MilestoneSequence 1:Arm Region,Abdomen 6mm,Buttock,Abdomen 9mm,ThighSequence 2:Abdomen 6mm,Abdomen 9mm,Arm Region,Thigh,ButtockSequence 3:Abdomen 9mm,Thigh,Abdomen 6mm,Buttock,Arm RegionSequence 4:Thigh,Buttock,Abdomen 9mm,Arm Region,Abdomen 6mmSequence 5:Buttock,Arm Region,Thigh,Abdomen 6mm,Abdomen 9mm
Started88888
Received at least one infusion88888
Completed88888
Not completed00000
Period 4
Participant flow — Period 4
MilestoneSequence 1:Arm Region,Abdomen 6mm,Buttock,Abdomen 9mm,ThighSequence 2:Abdomen 6mm,Abdomen 9mm,Arm Region,Thigh,ButtockSequence 3:Abdomen 9mm,Thigh,Abdomen 6mm,Buttock,Arm RegionSequence 4:Thigh,Buttock,Abdomen 9mm,Arm Region,Abdomen 6mmSequence 5:Buttock,Arm Region,Thigh,Abdomen 6mm,Abdomen 9mm
Started88888
Received at least one infusion88888
Completed88888
Not completed00000
Period 5
Participant flow — Period 5
MilestoneSequence 1:Arm Region,Abdomen 6mm,Buttock,Abdomen 9mm,ThighSequence 2:Abdomen 6mm,Abdomen 9mm,Arm Region,Thigh,ButtockSequence 3:Abdomen 9mm,Thigh,Abdomen 6mm,Buttock,Arm RegionSequence 4:Thigh,Buttock,Abdomen 9mm,Arm Region,Abdomen 6mmSequence 5:Buttock,Arm Region,Thigh,Abdomen 6mm,Abdomen 9mm
Started88888
Received at least one infusion88888
Completed88888
Not completed00000

Outcome measures

PrimaryVisual Analog Scale (VAS) Pain Score in the Abdominal, Arm, Thigh, and Buttock Areas

The Infusion site pain VAS score is a participant administered single item scale designed to measure pain using a 0-100 millimeter (mm) horizontal VAS. Overall severity of participant's pain is indicated by placing a single mark on the horizontal 100 mm scale from 0 mm (no pain) to 100 mm (worst imaginable pain).

Time frame:
Day 1: 1 min post bolus.
Reported as:
Geometric mean · millimeter
Visual Analog Scale (VAS) Pain Score in the Abdominal, Arm, Thigh, and Buttock Areas
millimeterTreatment Given to Arm RegionTreatment Given to ThighTreatment Given to Abdomen (6 mm)Treatment Given to Abdomen (9 mm)Treatment Given to Buttock
1 min post bolus (Bolus time: 3 hours)3.4 ± 1822.0 ± 1191.8 ± 1121.9 ± 1192.4 ± 167
1 min post bolus (Bolus time: 6 hours)3.7 ± 1642.6 ± 1372.3 ± 1512.0 ± 1133.3 ± 161
1 min post bolus (Bolus time: 9 hours)4.8 ± 2113.4 ± 1552.5 ± 1412.4 ± 1413.8 ± 196
Statistical analysis
  • Treatment Given to Arm Region vs Treatment Given to Thigh · Geometric least squares mean ratio: 1.77 · 95% CI 1.30 to 2.40
  • Treatment Given to Arm Region vs Treatment Given to Abdomen (6 mm) · Geometric least squares mean ratio: 1.91 · 95% CI 1.42 to 2.59
  • Treatment Given to Arm Region vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.84 · 95% CI 1.37 to 2.49
  • Treatment Given to Arm Region vs Treatment Given to Buttock · Geometric least squares mean ratio: 1.42 · 95% CI 1.05 to 1.92
  • Treatment Given to Thigh vs Treatment Given to Abdomen (6 mm) · Geometric least squares mean ratio: 1.08 · 95% CI 0.80 to 1.46
  • Treatment Given to Thigh vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.04 · 95% CI 0.77 to 1.41
  • Treatment Given to Thigh vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.80 · 95% CI 0.59 to 1.08
  • Treatment Given to Abdomen (6 mm) vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 0.96 · 95% CI 0.72 to 1.30
  • Treatment Given to Abdomen (6 mm) vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.74 · 95% CI 0.55 to 1.00
  • Treatment Given to Abdomen (9 mm) vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.77 · 95% CI 0.57 to 1.04
  • Treatment Given to Arm Region vs Treatment Given to Thigh · Geometric least squares mean ratio: 1.49 · 95% CI 1.09 to 2.02
  • Treatment Given to Arm Region vs Treatment Given to Abdomen (6 mm) · Geometric least squares mean ratio: 1.68 · 95% CI 1.25 to 2.28
  • Treatment Given to Arm Region vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.84 · 95% CI 1.36 to 2.48
  • Treatment Given to Arm Region vs Treatment Given to Buttock · Geometric least squares mean ratio: 1.16 · 95% CI 0.85 to 1.56
  • Treatment Given to Thigh vs Treatment Given to Abdomen (6 mm) · Geometric least squares mean ratio: 1.13 · 95% CI 0.83 to 1.54
  • Treatment Given to Thigh vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.24 · 95% CI 0.91 to 1.68
  • Treatment Given to Thigh vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.78 · 95% CI 0.57 to 1.05
  • Treatment Given to Abdomen (6 mm) vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.09 · 95% CI 0.81 to 1.47
  • Treatment Given to Abdomen (6 mm) vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.69 · 95% CI 0.51 to 0.93
  • Treatment Given to Abdomen (9 mm) vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.63 · 95% CI 0.47 to 0.85
  • Treatment Given to Arm Region vs Treatment Given to Thigh · Geometric least squares mean ratio: 1.49 · 95% CI 1.10 to 2.03
  • Treatment Given to Arm Region vs Treatment Given to Abdomen (6 mm) · Geometric least squares mean ratio: 1.96 · 95% CI 1.45 to 2.65
  • Treatment Given to Arm Region vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 2.03 · 95% CI 1.50 to 2.74
  • Treatment Given to Arm Region vs Treatment Given to Buttock · Geometric least squares mean ratio: 1.25 · 95% CI 0.93 to 1.69
  • Treatment Given to Thigh vs Treatment Given to Abdomen (6 mm) · Geometric least squares mean ratio: 1.31 · 95% CI 0.97 to 1.78
  • Treatment Given to Thigh vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.36 · 95% CI 1.01 to 1.84
  • Treatment Given to Thigh vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.84 · 95% CI 0.62 to 1.14
  • Treatment Given to Abdomen (6 mm) vs Treatment Given to Abdomen (9 mm) · Geometric least squares mean ratio: 1.04 · 95% CI 0.77 to 1.40
  • Treatment Given to Abdomen (6 mm) vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.64 · 95% CI 0.47 to 0.86
  • Treatment Given to Abdomen (9 mm) vs Treatment Given to Buttock · Geometric least squares mean ratio: 0.62 · 95% CI 0.46 to 0.83

Adverse events

Collected over Up to 9 days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Treatment Given to Arm Region0/40 (0%)0/40 (0%)5/40 (12.5%)
Treatment Given to Thigh0/40 (0%)0/40 (0%)9/40 (22.5%)
Treatment Given to Abdomen (6 mm)0/40 (0%)0/40 (0%)4/40 (10%)
Treatment Given to Abdomen (9 mm)0/40 (0%)0/40 (0%)4/40 (10%)
Treatment Given to Buttock0/40 (0%)0/40 (0%)3/40 (7.5%)
Most frequent other events
Most frequent other events
EventTreatment Given to Arm RegionTreatment Given to ThighTreatment Given to Abdomen (6 mm)Treatment Given to Abdomen (9 mm)Treatment Given to Buttock
Infusion site reactionGeneral disorders5/409/404/404/403/40

Baseline characteristics

All participants who received at least one Infusion.

Age, Continuous
Age, Continuous(years)Overall
Mean40.5 ± 12.0
Sex: Female, Male
Sex: Female, Male(Participants)Overall
Female10
Male30
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Overall
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White40
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(Participants)Overall
Germany40
08

Study locations

2 sites
  • Profil Institut für Stoffwechselforschung
    Neuss, Nordrhein-Westfalen 41460, Germany
  • Profil Mainz
    Mainz, 55116, Germany
09

References and documents

Publications

  • Ignaut D, Fukuda T, Bandi R, Ermer M, Stoffel MS, Zijlstra E, Paavola C. An Investigation Into Local Infusion Site Pain After Infusion of Ultra Rapid Lispro Excipients Across Sites and Depths. J Diabetes Sci Technol. 2024 Jul;18(4):920-929. doi: 10.1177/19322968221135217. Epub 2022 Nov 3. PubMed 36326260 ↗

Study documents

  • Study protocol · Oct 14, 2021
  • Statistical analysis plan · Feb 2, 2022

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 4, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT05067270
Lead sponsor
Eli Lilly and Company
Responsible party
Sponsor
First posted
Oct 5, 2021
Start date
Oct 22, 2021
Primary completion
Dec 6, 2021
Completion
Dec 6, 2021
Results posted
Oct 4, 2023
Last update
Oct 4, 2023

Study contacts

Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST)
study director · Eli Lilly and Company

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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