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Et enkelt bolus, 12-timers euglykæmisk klemmeundersøgelse af sikkerheden, farmakokinetikken (PK) og glukodynamikken (GD) ved intraperitoneal (IP) portal insulin U-500

2. november 2026 opdateret af: Portal Diabetes, Inc.

En enkelt bolus, 12-timers euglykæmisk klemmeundersøgelse af sikkerheden, farmakokinetikken (PK) og glukodynamikken (GD) af intraperitoneal (IP) portal insulin U-500

The goal of this clinical trial is to assess the safety of a new U500 insulin formulation and to determine how rapidly it is absorbed and how long it takes to act when administered intraperitoneally. The trial will be conducted in people with Type 1 Diabetes. The main questions it aims to answer are:

Is the drug safe and tolerable when administered intraperitoneally? How fast is it absorbed, and how long does it take to act? Researchers will compare the investigational product (PI-U500) with Humulin R U500 administered intraperitoneally and Lyumjev U100 administered subcutaneously.

Participants will undergo a 12-hour clamp procedure in which their blood glucose will be maintained stable via glucose infusion at variable rates after a single intraperitoneal injection of the insulin formulation.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

29

Fase

  • Fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • California
      • Chula Vista, California, Forenede Stater, 91911
        • ProSciento, Inc.

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 60 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Subjects who meet all the following criteria at Screening will be included in the study:

    1. Subjects ≥18 to ≤60 years of age at the time of signing the informed consent.
    2. Subjects diagnosed with T1DM for at least 12 months.
    3. Subjects who have been using an approved insulin pump or use MDI with basal and bolus insulin (stable use for 3 months).
    4. Fasting C-peptide concentration of ≤0.3 nmol/L (0.9061 ng/ml), assessed at a plasma glucose concentration >90 mg/dL. (If necessary, the subject may consume carbohydrates to raise BG over 90 mg/dL as measured by YSI (glucose analyzer) prior to drawing blood for C-peptide. This may be repeated as needed to ensure C-peptide is assessed when plasma glucose concentration is >90 mg/dL).
    5. HbA1c concentration of ≤8.5%.
    6. Body mass index (BMI) within the range ≥18.5 to ≤30.0 kg/m2.
    7. Weight ≥ 50 kg.
    8. Female subjects must be non-pregnant and non-lactating and postmenopausal (no menses >12 months); postmenopausal status will be confirmed through testing of follicle-stimulating hormone (FSH) levels at Screening for all female subjects.
    9. Male subjects must be surgically sterile, abstinent or if engaged in sexual relations of child-bearing potential, the subject and his partner must be using acceptable methods of contraception.
    10. Has venous access sufficient to allow for blood sampling.
    11. Capable of giving signed informed consent and willing to follow study procedures and commitment to the study duration.

Exclusion Criteria:

  • Subjects who meet any of the following criteria will be excluded from participating in the study:

    1. A subject who has proliferative retinopathy or maculopathy (based on records/documentation of ophthalmologic exam within 18 months of Screening or ophthalmologic exam during Screening), severe gastroparesis, and/or severe neuropathy, in particular autonomic neuropathy, as judged by the Investigator.
    2. History of ≥2 episodes of severe hypoglycemia (as defined per ADA criteria) or ≥1 episodes of diabetic ketoacidosis or emergency room visits for uncontrolled diabetes leading to hospitalization within 6 months prior to Screening.
    3. Subject is not able to avoid major dietary changes for the duration of the study.
    4. Systolic blood pressure >150 mm Hg and/or diastolic blood pressure >90 mm Hg at Screening. Treatment with no more than 2 antihypertensive medications must be with stable doses for at least 3 months prior to Screening.
    5. Current use of any drugs as listed in the table of prohibited medications.
    6. History of any major surgery within 6 months prior to Screening.
    7. History of any serious allergic adverse reaction or hypersensitivity to any of the product components.
    8. History of renal disease or abnormal kidney function tests at Screening (GFR <60 mL/min/1.73m2 as estimated using the Chronic Kidney Disease Epidemiology Collaboration [CKD-EPI]).
    9. Triglycerides >500 mg/dL at Screening.
    10. Clinically significant abnormal hematology or biochemistry screening tests. Subjects may have these labs be redrawn once on a separate day.
    11. Any history of heart disease, defined as symptomatic heart failure (New York Heart Association class III or IV), myocardial infarction, coronary artery bypass graft surgery, or angioplasty, unstable angina requiring medication, transient ischemic attack, cerebral infarct, or cerebral hemorrhage.
    12. Presence of clinically significant physical, laboratory, or ECG findings (eg, QTcF >450 msec for males, QTcF >470 msec for females) at Screening that, in the opinion of the Investigator, may interfere with any aspect of study conduct or interpretation of results.
    13. History or presence of malignant neoplasms within the past 5 years prior to the day of Screening. Basal and squamous cell skin cancer and any in-situ carcinomas are allowed.
    14. Clinically significant concomitant disease including cardiovascular, renal, hepatic, respiratory, gastrointestinal, hematological, dermatological, neurological, psychiatric, systemic or infections disease as judged by the Investigator.
    15. Personal or family history of hypercoagulability or thromboembolic disease.
    16. History of any active infection, other than mild viral illness within 30 days prior to dosing as judged by the Investigator.
    17. Administration of any vaccinations in the 2 weeks prior to admission to the clinic.
    18. History of alcohol abuse as judged by the Investigator within approximately 1 year or consuming >2 standard drinks on average per day in men, and >1 standard drinks on average per day in women, and/or positive alcohol breath test at Screening or upon clinic admission. (One drink is defined as 12 fluid ounces of regular beer [5% alcohol], 5 fluid ounces of wine [12% alcohol], or 1.5 fluid ounces of 80 proof [40% alcohol] distilled spirits.)
    19. History of illicit/recreational drug abuse within approximately 1 year as judged by the Investigator. Frequent use of marijuana or other tetrahydrocannabinol (THC) products within 6 weeks, or clinically under the effect at Screening or upon clinic admission, as per Investigator evaluation or a positive urine drug test at Screening or upon clinic admission.
    20. Smoker (defined as a subject who is smoking more than 5 cigarettes or the equivalent per day); or non- or occasional smoker who is not able or willing to refrain from smoking and use of nicotine gum or transdermal nicotine patches during the inpatient period.
    21. Known history or positive test of hepatitis B surface antigen (HBsAg), hepatitis C antibody test (anti-HCV), or human immunodeficiency virus type 1 (HIV-1) or 2 (HIV-2) antibody at Screening.
    22. Existence of any surgical or medical condition that, in the judgment of the Investigator, might interfere with the absorption, distribution or metabolism of the drugs or the tolerability/safety measurements.
    23. Any subject who, per the opinion of the Investigator, will not make a good study subject relative to mental disorder, history of poor treatment adherence, etc.
    24. Participation in an investigational study within 30 days prior to dosing or within 5 half-lives of the last dose of study drug whichever is longer.
    25. Donation or loss of >500 mL of blood or blood product within 56 days of Screening.
    26. Poor venous access as judged by the study team.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Part A, Group 1, Single Ascending Dose

Participants will receive PI-U500 intraperitoneally at 0.1 U/kg, then 0.2 U/kg and lastly 0.3 U/kg

Intraperitoneal delivery of a single dose at 0.1 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.3 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500
Andet: Part B, Group 2

A three-way crossover where participants will receive 0.1 U/kg of PI-U500, followed by 0.2 U/kg of Humulin R U500 (Active Control), and finally 0.2 U/kg of PI-U500. All administered intraperitoneally.

Intraperitoneal delivery of a single dose at 0.1 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.3 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andet: Part B, Group 3

A three-way crossover where participants will receive 0.1 U/kg of PI-U500, followed by 0.2 U/kg of Humulin R U500 (Active Control), and finally 0.3 U/kg of PI-U500. All administered intraperitoneally.

Intraperitoneal delivery of a single dose at 0.1 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.3 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andet: Part B, Group 4

A three-way crossover where participants will receive 0.2 U/kg of Lyumjev U-100 (Active Control) subcutaneously, followed by 0.2 U/kg of PI-U500 intraperitoneally, and finally 0.3 U/kg of PI-U500, also intraperitoneally.

Intraperitoneal delivery of a single dose at 0.1 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.3 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Subcutaneous delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andet: Part B, Group 5

A two-way crossover where participants will receive 0.2 U/kg of Lyumjev U-100 (Active Control) subcutaneously, followed by 0.2 U/kg of PI-U500 intraperitoneally.

Intraperitoneal delivery of a single dose at 0.1 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.3 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Subcutaneous delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andet: Part B, Group 6

A three-way crossover where participants will receive 0.2 U/kg of each of the drugs sequentially, but the order will be randomized into three options:

  • Option 1: 0.2 U/kg of Lyumjev U-100 (Active Control) subcutaneously, followed by 0.2 U/kg of Humulin R U500 (Active Control) intraperitoneally, and finally 0.2 U/kg of PI-U500 intraperitoneally.
  • Option 2: 0.2 U/kg of Humulin R U500 (Active Control) intraperitoneally , followed by 0.2 U/kg of PI-U500 intraperitoneally, and finally 0.2 U/kg of Lyumjev U-100 (Active Control) subcutaneously.
  • Option 3: 0.2 U/kg of PI-U500 intraperitoneally , followed by 0.2 U/kg of Lyumjev U-100 (Active Control) subcutaneously, and finally 0.2 U/kg of Humulin R U500 (Active Control) intraperitoneally.

Intraperitoneal delivery of a single dose at 0.1 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.3 U/kg during an euglycemic clamp

Andre navne:
  • PI-U500

Intraperitoneal delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Subcutaneous delivery of a single dose at 0.2 U/kg during an euglycemic clamp

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Sikkerhed: Forekomst af bivirkninger
Tidsramme: Fra indskrivning til opfølgende besøg, i gennemsnit 2 måneder
Fra indskrivning til opfølgende besøg, i gennemsnit 2 måneder
Sikkerhed: Ændring fra baseline i systolisk og diastolisk blodtryk
Tidsramme: Vil blive målt ved 2 tidspunkter, først inden for 4 timer før lægemiddeladministration (Pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Vil blive målt ved 2 tidspunkter, først inden for 4 timer før lægemiddeladministration (Pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Sikkerhed: Ændring i temperatur fra baseline
Tidsramme: Vil blive målt ved 2 tidspunkter, først inden for 4 timer før lægemiddeladministration (pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Vil blive målt ved 2 tidspunkter, først inden for 4 timer før lægemiddeladministration (pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Sikkerhed: Ændring fra baseline i respirationsfrekvens
Tidsramme: Vil blive målt ved 2 tidspunkter, først inden for 4 timer før lægemiddeladministration (Pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Vil blive målt ved 2 tidspunkter, først inden for 4 timer før lægemiddeladministration (Pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Sikkerhed: Ændring fra udgangspunktet i hjertefrekvens
Tidsramme: Vil blive målt 2 gange, først inden for 4 timer før lægemiddeladministration (pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Vil blive målt 2 gange, først inden for 4 timer før lægemiddeladministration (pre-clamp) og derefter efter 12 timers lægemiddeladministration (post-clamp)
Sikkerhed: Forekomst og sværhedsgrad af kliniske fund ved fysisk undersøgelse
Tidsramme: Præ-dosis og efter afslutningen af PK-prøvetagning (720 minutter efter dosis)
Præ-dosis og efter afslutningen af PK-prøvetagning (720 minutter efter dosis)
Tolerabilitet: Ændring i interleukin 6 [IL-6]-niveauer
Tidsramme: Blodprøver vil blive taget umiddelbart før dosering, 2 timer efter dosering og med den sidste PK-prøve (720 minutter efter dosering)
Blodprøver vil blive taget umiddelbart før dosering, 2 timer efter dosering og med den sidste PK-prøve (720 minutter efter dosering)
Tolerabilitet: Ændring i tumornekrosefaktor [TNF-α]-niveauer
Tidsramme: Blodprøver vil blive taget umiddelbart før dosering, 2 timer efter dosering og med den sidste PK-prøve (720 minutter efter dosering)
Blodprøver vil blive taget umiddelbart før dosering, 2 timer efter dosering og med den sidste PK-prøve (720 minutter efter dosering)
Tolerabilitet: Ændring i højfølsomhed C-reaktivt protein [hsCRP]-niveauer
Tidsramme: Blodprøver tages umiddelbart før dosering, 2 timer efter dosering og med den sidste PK-prøve (720 minutter efter dosering)
Blodprøver tages umiddelbart før dosering, 2 timer efter dosering og med den sidste PK-prøve (720 minutter efter dosering)
Farmakokinetik: Maksimal insulin-koncentration (Cmax)
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Farmacokinetisk: Tid til maksimal insulin koncentration (Tmax)
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Glukodynamik: Areal under glukoseinfusionshastighedens (GIR) tidskurve
Tidsramme: Fra dosistidspunktet (tid 0) indtil 12 timer efter dosering (AUCGIR,0-12h)
Fra dosistidspunktet (tid 0) indtil 12 timer efter dosering (AUCGIR,0-12h)
Glukodynamisk: Maksimal GIR (GIRmax)
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Glukodynamisk: Tid til maksimal GIR (TGIRmax)
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Safety: Change from baseline in 12-lead electrocardiogram (ECG) parameters
Tidsramme: Pre-dose and after the end of PK-sampling (720 minutes post-dose)

The following parameters will be recorded from the subject'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 (QTcF = QT ÷ cube root of the R-R interval [where R-R is the duration of the entire cardiac cycle]).

Pre-dose and after the end of PK-sampling (720 minutes post-dose)
Tolerability: Pain assessments per Visual Analogue Scale (VAS)
Tidsramme: 10 min and 1 hour post-dosing

VAS assessment will target the assessment of abdominal pain. The scale will go from 0 to 10, with 10 being the maximum pain.

10 min and 1 hour post-dosing
Pharmacokinetic: Area under the insulin concentration-time curve (AUC)
Tidsramme: From the time of dose (time 0) until 12 hours post-dose (AUCIns,0-12h)

For the duration of the euglycemic clamp

From the time of dose (time 0) until 12 hours post-dose (AUCIns,0-12h)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Farmakokinetisk: Arealet under de partielle insulin-koncentrationstidskurver (AUC) i tidsintervaller
Tidsramme: Fra 0 til 15 minutter (AUCIns,0-15 min), fra 0-30 minutter (AUCIns,0-30 min) og fra 3 timer til slut (AUCIns,3h-end)
Fra 0 til 15 minutter (AUCIns,0-15 min), fra 0-30 minutter (AUCIns,0-30 min) og fra 3 timer til slut (AUCIns,3h-end)
Farmakokinetik: Tid til halv-maksimal insulin koncentration før Cmax (t50%-INS (tidlig))
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Farmakokinetisk: Tid til halv-maksimal insulin-koncentration efter Cmax (t50%-INS (sen))
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Glukodynamik: Areal under GIR-tidskurven i tidsintervaller
Tidsramme: Fra 0-30 minutter (AUCGIR,0-30 min), fra 0 til 1 time (AUCGIR,0-1h), fra 4 timer til slut (AUCGIR,4h-end), fra 0 til 6 timer (AUCGIR,0-6h) og fra 0 til slut (AUCGIR,0-end)
Fra 0-30 minutter (AUCGIR,0-30 min), fra 0 til 1 time (AUCGIR,0-1h), fra 4 timer til slut (AUCGIR,4h-end), fra 0 til 6 timer (AUCGIR,0-6h) og fra 0 til slut (AUCGIR,0-end)
Glukodynamisk: Tid til halv maksimal GIR før GIRmax (t50%-GIR (tidlig))
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Glukodynamisk: Tid til halv maksimal GIR efter GIRmax (t50%-GIR (sen))
Tidsramme: Over 12 timer efter dosering
Over 12 timer efter dosering
Pharmacokinetic: Onset of appearance
Tidsramme: Over 12 hours post-dosing

Defined as time from study drug administration until the first time insulin concentrations were equal to or higher than the lower limit of quantification

Over 12 hours post-dosing

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

10. februar 2026

Primær færdiggørelse (Faktiske)

30. september 2026

Studieafslutning (Faktiske)

30. september 2026

Datoer for studieregistrering

Først indsendt

25. november 2025

Først indsendt, der opfyldte QC-kriterier

7. januar 2026

Først opslået (Faktiske)

14. januar 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

4. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. november 2026

Sidst verificeret

1. november 2025

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • PDI-PIU500-C001

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .