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Pilot Study of OMEGA-3 and Vitamin D in High-Dose in Type I Diabetic Patients

NCT03406897 — Phase 1 / Phase 2, Completed, 27 participants, Rodolfo Alejandro

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A Pilot, Safety and Feasibility Trial of High-Dose Omega-3 Fatty Acids and High-Dose Cholecalciferol (Vitamin D) Supplementation in Type 1 Diabetes

RegistryNCT03406897, acronym POSEIDON
StatusCompleted
PhasePhase 1 / Phase 2
Study typeInterventional; randomized, parallel, masking: none, treatment
Enrollment27 (Actual)
SponsorRodolfo Alejandro (Other); collaborators: Diabetes Research Institute Foundation
ConditionsDiabetes Mellitus, Type 1, Hypoglycemia, Diabetes Mellitus, Diabetes, Autoimmune
InterventionsCholecalciferol, Omega 3 fatty acid (Drug)
Datesstart 2018-07-23, primary completion 2024-07-31, completion 2024-07-31, first posted 2018-01-23, last updated 2025-09-17
Locations1 site in United States

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-Summary

The investigator propose to test the safety and efficacy of a regimen that combines Omega-3 Fatty Acids and Vitamin D in a design that considers timing and duration of administration in relation to their effects and predicted synergies.

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+Detailed description

These agents may afford promote sustained immune regulation, reduce inflammation, and provide support for the residual beta cell mass. This integrated therapeutic regimen addresses major pathogenic mechanisms in T1D (Type 1 Diabetes) and thus represents a rational and well supported approach to preserve insulin secretion in T1D (Type 1 Diabetes). This approach could halt the disease progress, preserve β-cell function and hopefully reduce dose of insulin required to manage T1D (Type 1 Diabetes). The investigator hypothesizes that Omega-3 Fatty Acids and Vitamin D, administered to patients with newly or established T1D (Type 1 Diabetes) and residual stimulated C-peptide secretion will be safe and may preserve insulin secretion.

+Arms and interventions

ArmTypeInterventionsDescription
Omega-3 and Vitamin D CombinationActive comparatorDrug: Cholecalciferol; Drug: Omega 3 fatty acidThe treatment arm A includes Omega-3 Fatty Acids and Cholecalciferol (Vitamin D) supplement.
Vitamin D OnlyActive comparatorDrug: CholecalciferolThe treatment arm B (control group) will receive only Cholecalciferol (Vitamin D) supplement.
  • Cholecalciferol (Drug), also known as Vitamin D: Oral Administration
  • Omega 3 fatty acid (Drug), also known as Omega 3: Oral Administration

+Outcome measures

Primary outcomes

  • Change in MMTT (Mixed Meal Tolerance Test) 90 Min C-peptide [Baseline and 1-Year Visit]: Stimulated (90-minute sample of a MMTT) C-peptide at the 1-year visit greater or equal to baseline level measured by ng/mL. Change in 90-minute C-peptide between baseline and 1-year visit

Secondary outcomes

  • Change in Hemoglobin A1c Level [Baseline and 1-Year Visit]: Change in HbA1c between baseline and 1-year
  • Change in Insulin Requirements [Baseline and 1-Year Visit]: Difference in insulin requirement at the 1-year visit compared to baseline measured in units/kg/day
  • Number of Adverse Events (AE) [Through study completion, and average of one year]: Number of adverse events (AE) comparable to general diabetes population

+Eligibility

Sex: All, ages: 6 Years to 65 Years

Inclusion Criteria:

Patients must meet all of the following criteria to be eligible to participate in this study:

* Subject must be able to understand and provide informed consent.
* Males and females, 6-17 years for children and 18-65 years of age for adult group.
* For new onset T1D - from onset to 6 months (180 days) post-diagnosis at the time of randomization.
* For established T1D - At least 6 months and up to 10 years from the diagnosis at the time of randomization.
* Affected by T1D, according to ADA standard criteria, and confirmed by positivity of at least one T1D-associated autoantibody, to GAD65, IA-2, ZnT8, or insulin autoantibody (if patient has been treated with insulin for less than 2 weeks).
* T1D must be treated with insulin (except if participant is in Honeymoon period/phase).
* Stimulated C-peptide peak level, at the baseline 1 visit MMTT, ≥ 0.2 ng/ml.
* Female subjects of childbearing potential must have a negative pregnancy test upon study entry.
* Adequate venous access to support study required blood draws.

Exclusion Criteria:

Patients must not meet any of the following criteria to be eligible to participate:

* Inability or unwillingness of a participant to give written informed consent or comply with study protocol.
* BMI>30 kg/m2.
* Contra-indications to any of the drugs used in the trial (as per package insert, e.g., knowledge of hypersensitivity to drugs or its excipients).
* Uncompensated heart failure, fluid overload, myocardial infarction or liver disease or severe impairment of a vital organ within the last 6 weeks before enrollment.
* Any of the following laboratory findings indicating hemoglobin <10.0 g/dL; leukocytes <3,000/μL; neutrophils <1,500/μL; lymphocytes <800/μL; platelets <100,000/μL.
* Any sign or diagnosis of significant chronic active infection (e.g., hepatitis, tuberculosis, EBV, or CMV), or screening laboratory evidence consistent with a significant chronic active infection (such as positive for HIV, IGRA test for TB, or hepatitis B-C).
* Ongoing acute infections, e.g., acute respiratory tract, urinary tract, or gastrointestinal tract infections.
* Ongoing or anticipated use of diabetes medications other than insulin.
* Current or ongoing use of non-insulin pharmaceuticals that affect glycemic control within prior 7 days of screening.
* Recent recipient of any licensed or investigational live attenuated vaccine(s) within 6 weeks of randomization.
* Use of investigational drugs within 3 months of participation.
* Concomitant therapy with immunosuppressive drugs, immunomodulators, or cytotoxic agents, or previous therapy less than 3 months from randomization.
* History or diagnosis of malignancy, with the exception of a history of localized basal or squamous cell carcinoma.
* History of gastroparesis or other severe gastrointestinal disease..
* Presence of an allograft.
* AST, ALT or Alkaline Phosphatase >2 times upper limit of normal or total bilirubin >1.5 times upper limit of normal.
* History of mental illness deemed to be clinically unstable or any situation that, in the opinion of the investigator, would interfere with the participant's ability to comply with study requirements.
* History of illicit drug or alcohol abuse.
* Pregnancy or ongoing breastfeeding for women; unwillingness or inability of both females and males of childbearing age to use a reliable and effective form of contraception, for the entire duration of the study.
* Past or current medical problems or findings from physical examination or laboratory testing that are not listed above, which, in the opinion of the investigator, may pose additional risks from participation in the study, may interfere with the participant's ability to comply with study requirements or that may impact the quality or interpretation of the data obtained from the study.

+Posted results

Participant flow

MilestoneOmega-3 and Vitamin D CombinationVitamin D Only
Started1215
Completed78
Not completed57

Outcome results

  • Change in MMTT (Mixed Meal Tolerance Test) 90 Min C-peptide (Primary), Median, ng/mL: Omega-3 and Vitamin D Combination -1.23 (-1.60 to -0.17); Vitamin D Only -0.62 (-1.44 to -0.15)
  • Change in Hemoglobin A1c Level (Secondary), Median, percentage of HbA1c: Omega-3 and Vitamin D Combination 0.00 (-0.30 to 2.50); Vitamin D Only -0.55 (-3.10 to 0.30)
  • Change in Insulin Requirements (Secondary), Median, units/kg/day: Omega-3 and Vitamin D Combination 0.16 (0.02 to 0.52); Vitamin D Only 0.15 (-0.20 to 0.87)
  • Number of Adverse Events (AE) (Secondary), Number, number of adverse events: Omega-3 and Vitamin D Combination 31; Vitamin D Only 28

Adverse events

Time frame: 1 year

ArmDeathsSerious adverse eventsOther adverse events
Omega-3 and Vitamin D Combination0/12 (0.0%)0/12 (0.0%)8/12 (66.7%)
Vitamin D Only0/15 (0.0%)2/15 (13.3%)8/15 (53.3%)

Serious adverse events by term

TermOrgan systemOmega-3 and Vitamin D CombinationVitamin D Only
Acute perforated apendicitisGastrointestinal disorders0/121/15
Diabetes KetoacidosisEndocrine disorders0/121/15

Other adverse events by term

TermOrgan systemOmega-3 and Vitamin D CombinationVitamin D Only
Acute appendicitisGastrointestinal disorders0/121/15
Right upper thigh abscessSkin and subcutaneous tissue disorders0/121/15
Streptococcal pharyngitisRespiratory, thoracic and mediastinal disorders0/121/15
Urinary Tract InfectionRenal and urinary disorders0/121/15
COVID-19 InfectionInfections and infestations0/123/15
DyslipidemiaEndocrine disorders0/121/15
HypoglycemiaEndocrine disorders3/123/15
High Vitamin D levelsGeneral disorders0/121/15
Upper Respiratory InfectionRespiratory, thoracic and mediastinal disorders0/121/15
HyperkalemiaGeneral disorders1/120/15
HyperphosphatemiaGeneral disorders1/120/15
Fecal incontinenceGastrointestinal disorders1/120/15
Oily rectal dischargeGastrointestinal disorders1/120/15
GastroenteritisGastrointestinal disorders1/120/15
Influenza ARespiratory, thoracic and mediastinal disorders2/120/15
NeutropeniaBlood and lymphatic system disorders1/120/15
Celiac DiseaseGastrointestinal disorders1/120/15
Nasal congestionRespiratory, thoracic and mediastinal disorders1/120/15
BronchitisRespiratory, thoracic and mediastinal disorders1/120/15
Elevated PT/INRBlood and lymphatic system disorders1/120/15
Wisdom Teeth ExtractionSurgical and medical procedures1/120/15

+Locations (1)

FacilityCityCountryStatus
Diabetes Research Institute, University of Miami Miller School of MedicineMiami, FloridaUnited States

+Publications

  • Baidal DA, Ricordi C, Garcia-Contreras M, Sonnino A, Fabbri A. Combination high-dose omega-3 fatty acids and high-dose cholecalciferol in new onset type 1 diabetes: a potential role in preservation of beta-cell mass. Eur Rev Med Pharmacol Sci. 2016 Jul;20(15):3313-8. PMID 27467009

+Study documents

+Investigators

My Notes