NCT02213003Befejeződött1/2. fázis
Allogeneic Islet Cells Transplanted Onto the Omentum
Forrás: ClinicalTrials.gov · Utoljára frissítve: 2025. aug. 12.
Rövid összefoglaló (regiszter, angolul)
Current islet transplantation into the portal vein of the liver has shown the unique ability of islets to stabilize blood glucose levels and prevent severe hypoglycemia in a selected group of subjects with Type 1 diabetes. The main limitations of islet transplantation are the need for systemic immunosuppression to maintain function and the loss of islet function over time. Additionally, many studies have demonstrated that the current site of transplantation in the liver is not an ideal site due to several factors. These factors include (1) significant liver inflammation following islet infusion; (2) potential for life-threatening procedure-related complications such as bleeding and thrombosis; (3) high levels of immunosuppressive drugs and GI toxins in the liver contributing to islet toxicity; (4) the inability to retrieve islets after infusion; and (5) development of graft dysfunction in a number of recipients of intrahepatic allogeneic and autologous islets. The implantation of islets into the omentum will allow adequate engraftment of islets onto the omentum and will lead to comparable or superior functional and clinical outcomes than in the traditional intrahepatic site.
- Állapot (regiszter)
- Befejeződött
- Fázis (regiszter)
- 1/2. fázis
- Vizsgálattípus
- Beavatkozással járó
- Résztvevők száma
- 3 (tényleges)
- Első benyújtás
- 2014. aug. 7.
- Kezdés
- 2014. szept.
- Elsődleges befejezés
- 2024. jún. 30.
- Fő szponzor
- Rodolfo Alejandro
- Betegségek
- 1-es típusú cukorbetegség
- NCT-szám
- NCT02213003
Mit vállalsz
- Vizsgálat típusa: Beavatkozással járó · 1/2. fázis
- Bevont résztvevők: 3
- 2014. szept. és az elsődleges befejezés (2024. jún. 30.) között
- 1 helyszín, 1 országban
- Vizitek és vizsgálatok: kérdezd a vizsgálat csapatát, a regiszter nem sorolja fel őket
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Korábbi kezelés
- Invasive aspergillus, histoplasmosis, and coccidioidomycosis infection within one year prior to study enrollment.
- Chronic use of systemic steroids, except for the use of ≤5 mg prednisone daily, or an equivalent dose of hydrocortisone, for physiological replacement only.
- Treatment with any anti-diabetic medications other than insulin within 4 weeks of enrollment.
- Use of any investigational agents within 4 weeks of enrollment. 24. Administration of live attenuated vaccine(s) within 2 months of enrollment. 25. Any medical condition that, in the opinion of the investigator, will interfere with the safe participation in the trial.
- Treatment with any immunosuppressive regimen at the time of enrollment. 27. A previous islet transplant. 28. A previous pancreas transplant 29. Inflammatory bowel disease. 30. History of intestinal obstructions. 31. Previous major abdominal surgery. 32. History of peritonitis.
Más betegség
- Presence or history of panel-reactive anti-HLA antibodies.
- Presence or history of active infection including hepatitis B, hepatitis C, HIV, or tuberculosis (TB).
- Any history of malignancy except for completely resected squamous or basal cell carcinoma of the skin.
- A history of Factor V deficiency.
- Any coagulopathy or medical condition requiring long-term anticoagulant therapy.
- Symptomatic peptic ulcer disease.
- Gastrointestinal disorders potentially interfering with the ability to absorb oral medications.
Laborértékek
- HbA1c >10%.
- Presence or history of macroalbuminuria (>300mg/g creatinine).
- For female subjects: Serum or urine Positive pregnancy test, presently breast-feeding, or unwillingness to use effective contraceptive measures for the duration of the study and 4 months after discontinuation. For male subjects: intent to procreate during the duration of the study or within 4 months after discontinuation or unwillingness to use effective measures of contraception. If sexually active, subject must use at least two medically accepted methods of birth control.
- Hb below the lower limits of normal at the local laboratory; lymphopenia (<1,000/µL), neutropenia (<1,500/µL), or thrombocytopenia (platelets <100,000/µL).
- Severe co-existing cardiac disease,
- recent myocardial infarction (within past 6 months)
- evidence of ischemia on functional cardiac exam within the last year) left ventricular ejection fraction <30%.
- Hyperlipidemia despite medical therapy (fasting LDL cholesterol > 130 mg/dL, fasting triglycerides > 200 mg/dl).
Egyéb
- Body Mass Index (BMI) >30 kg/m2 or patient weight ≤50 kg.
- Insulin requirement of >1.0 IU/kg/day or <15 U/day.
- Untreated proliferative diabetic retinopathy.
- Blood Pressure: SBP >160 mmHg or DBP >100 mmHg.
- Glomerular filtration rate <80 mL/min/1.73 m2 (calculated).
- Negative screen for Epstein-Barr Virus (EBV) by IgG determination.
- Active alcohol or substance abuse.
- Persistent elevation of liver function tests at the time of study entry.
- Symptomatic cholecystolithiasis.
- Acute or chronic pancreatitis.
Kiket keres a vizsgálat
- Male and female patients age 18 to 65 years of age.
- Ability to provide written informed consent.
- Mentally stable and able to comply with the procedures of the study protocol.
- Type1 diabetes with onset of disease at <40 years of age, insulin-dependence for > 5 years at the time of enrollment
- Absent stimulated c-peptide (<0.3ng/mL) in response to a mixed meal tolerance test.
- Involvement in intensive diabetes management
- At least one episode of severe hypoglycemia in the 12 months prior to study enrollment.
- Reduced awareness of hypoglycemia as defined by a Clarke score of 4 or more OR A Hypoglycemia score greater than or equal to the 90th percentile (1047) during the screening period; OR Marked glycemic lability and defined by a lability index score greater than or equal to the 90th percentile (433 mmol/L2/h•wk-1) during the screening period; OR A composite of a Clarke score of 3 or less and a hypoglycemia score greater than or equal to the 75th percentile (423) and a lability index greater than or equal to the 75th percentile (329) during the screening period.
- Subjects screening data from 20053135 protocol will be accepted for subjects eligible for this study. If 20053135 visit was 12 months prior to enrollment, Visit 2 laboratory should be repeated.
Életkor a regiszterben: 18 év – 65 év · Nem: nők és férfiak · Egészséges önkénteseket nem fogad
Helyszínek (1)
Helyszínek a regiszter sorrendjében. Ha a profilodba mented a városodat, távolság szerint rendeződnek.
| Helyszín | Város | Ország | Helyszín állapota |
|---|---|---|---|
| Diabetes Research Institute, University of Miami Miller School of Medicine | Miami | Egyesült Államok | Ismeretlen állapot |
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