Type 1 Diabetes MellitusNCT07434154
Evaluation of Oxidative Stress: Comparison Between Type 1 Diabetes Mellitus and Latent Autoimmune Diabetes in Adults
An observational study of Type 1 Diabetes Mellitus and Latent Autoimmune Diabetes in Adult (LADA), run by Fondazione IRCCS Policlinico San Matteo di Pavia at 1 site in Italy.
Trial summary
After obtaining informed consent, the investigators will recruit 75 patients with T1DM and 75 with LADA with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS… Read more about this study
- Who is it for?
- Ages 18 to 75 years
- Conditions the study is for
- Type 1 Diabetes Mellitus, Latent Autoimmune Diabetes in Adult (LADA)
- How many people
- 75 participants
- Where
- 1 siteItaly
- Study dates
- 1 Oct 2025to 31 Aug 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients with with already known or newly diagnosed type 1 diabetes mellitus or Latent Autoimmune Diabetes in Adult with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation.
Who may be able to join
- Patients with with already known or newly diagnosed type 1 diabetes mellitus or LADA Patients aged ≥ 18 years and ≤ 75 years Patients of both sexes All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation.
Who cannot join
- Patients refusing to sign informate consent.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Italy1 site, 1 recruiting
- Recruiting
Fondazione IRCCS Policlinico San Matteo di Pavia
Pavia, Pavia, 27100
Giuseppe Giuseppe Derosa, MD, PhD, +390382502614, G.Derosa@smatteo.pv.it
G.Derosa@smatteo.pv.it
About this study
After obtaining informed consent, the investigators will recruit 75 patients with T1DM and 75 with LADA with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation. The study design will include one single visit where patients' medical history and blood samples will be collected. For incident cases, a follow-up visit at 3 months from the start of treatment will be scheduled to assess whether a decrease in HbA1c corresponds to a decrease in the biomarkers. For a comprehensive oxidative balance evaluation, the d-ROMs test will be carried out to evaluate the pro-oxidant status linked to one of the parameters related to the antioxidant potential (BAP test, OXY-Adsorbent test, -SHp test and anti-ROMs test). Parameters will be evaluated using Free Radical Elective Evaluator (FREE) Duo by Diacron International s.r.l. (Grosseto, ITALY), an integrated analytical system that permits any type of chemical-clinical analysis based on the principle of photometry. The investigators will also evaluate high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA). To evaluate if there is an association between a worse stage of the diseases and some oxidative stress markers, the investigators will also evaluate glycated hemoglobin (HbA1c) fasting plasma glucose (FPG), post-prandial glucose (PPG). All plasmatic parameters will be determined after a 12-h overnight fast, with the exception of PPG, determined 2 hours after a standardized meal. Venous blood samples will be taken for all patients between 8 A.M. and 9 A.M. The investigators will use plasma obtained by addition of Na2-ethylenediaminetetraacetic acid (EDTA), 1 mg/ml, and centrifuged at 3000 g for 15 minutes at 4°C. Immediately after centrifugation, the plasma samples will be frozen and stored at -80 °C for no more than 3 months. All measurements will be analyzed by the Laboratory of Molecular Medicine, General Medicine 1, IRCCS Policlinico San Matteo Foundation with proven experience in the dosage of these markers.
Read the detailed description
The aim of this observational study will be to evaluate the levels of the main oxidative stress markers in T1DM and LADA and to identify if there are some oxidative stress markers specific for the two diseases. Secondary objectives will be to evaluate if there is an association between oxidative stress markers and severity of the diseases.
Primary aim:
Verify whether biomarkers levels depend on the type of disease (T1DM vs LADA), while adjusting for patients' characteristics.
Secondary aims:
2.1) Verify whether biomarkers levels are associated with glycemic control (FPG, HbA1c, PPG).
2.2) In incident cases, to assess whether a decrease in HbA1c corresponds to a decrease in the biomarkers at 3 months from start of treatment within each disease.
2.3) Verify whether these biomarkers tend to form clusters, overall and by diagnosis.
After obtaining informed consent, the investigators will recruit 75 patients with T1DM and 75 with LADA with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation. The study design will include one single visit where patients' medical history and blood samples will be collected. For incident cases, a follow-up visit at 3 months from the start of treatment will be scheduled to assess whether a decrease in HbA1c corresponds to a decrease in the biomarkers. For a comprehensive oxidative balance evaluation, the d-ROMs test will be carried out to evaluate the pro-oxidant status linked to one of the parameters related to the antioxidant potential (BAP test, OXY-Adsorbent test, -SHp test and anti-ROMs test). Parameters will be evaluated using Free Radical Elective Evaluator (FREE) Duo by Diacron International s.r.l. (Grosseto, ITALY), an integrated analytical system that permits any type of chemical-clinical analysis based on the principle of photometry. The investigators will also evaluate high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA). To evaluate if there is an association between a worse stage of the diseases and some oxidative stress markers, the investigators will also evaluate glycated hemoglobin (HbA1c) fasting plasma glucose (FPG), post-prandial glucose (PPG). All plasmatic parameters will be determined after a 12-h overnight fast, with the exception of PPG, determined 2 hours after a standardized meal. Venous blood samples will be taken for all patients between 8 A.M. and 9 A.M. The investigators will use plasma obtained by addition of Na2-ethylenediaminetetraacetic acid (EDTA), 1 mg/ml, and centrifuged at 3000 g for 15 minutes at 4°C. Immediately after centrifugation, the plasma samples will be frozen and stored at -80 °C for no more than 3 months. All measurements will be analyzed by the Laboratory of Molecular Medicine, General Medicine 1, IRCCS Policlinico San Matteo Foundation with proven experience in the dosage of these markers. The investigators will study 10 biomarkers. The sample size calculation is based on feasibility. The investigators expect to enrol 75 patients with T1DM and 75 patients with LADA, of both sexes, aged ≥ 18 and ≤ 75 years.
- Keywords
- Type 1 diabetes mellitus, Latent Autoimmune Diabetes in Adult, Oxidative stress
- Medical subject headings
- Diabetes Mellitus, Type 1
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Type 1 diabetes mellitus | Latent Autoimmune Diabetes in Adult | |
| Latent Autoimmune Diabetes in Adult | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
Oxidative stress biomarkers
For a comprehensive oxidative balance evaluation, the d-ROMs test will be carried out to evaluate the pro-oxidant status. Test will include BAP test, OXY-Adsorbent test, -SHp test and anti-ROMs test. Parameters will be evaluated using Free Radical Elective Evaluator (FREE) Duo by Diacron International s.r.l. (Grosseto, ITALY), an integrated analytical system that permits any type of chemical-clinical analysis based on the principle of photometry. The investigators will also evaluate high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA).
Measured: Three months
Secondary outcomes (1)
Glycemic control
Verify glycemic control (fasting plasma glucose, glycated hemoglobin, post-prandial glucose).
Measured: Three months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Feb 2026
- Study start1 Oct 2025
- Primary completion31 Aug 2026 (estimated)
- Study completion31 Aug 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Type 1 Diabetes MellitusStudies of the same condition, open and under way.
- More trials run by Fondazione IRCCS Policlinico San Matteo di PaviaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 75 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Fondazione IRCCS Policlinico San Matteo di Pavia
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Giuseppe Derosa, Fondazione IRCCS Policlinico San Matteo di Pavia
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07434154
- Sponsor's protocol ID
- DMT1 vs LADA
- Status last verified
- Mar 2026
- First submitted
- 8 Dec 2025
- Last updated
- 2 Apr 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 2 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Oxidative Stress: Comparison Between Type 1 Diabetes Mellitus and Latent Autoimmune Diabetes in Adults
- ClinicalTrials.gov ID
- NCT07434154
- Acronym / sponsor ID
- DMT1 vs LADA
- Keywords
- Type 1 diabetes mellitus, Latent Autoimmune Diabetes in Adult, Oxidative stress
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 75 participants (estimated)
- Lead sponsor
- Fondazione IRCCS Policlinico San Matteo di PaviaUniversity, hospital or other
- Study start
- 1 Oct 2025 (actual)
- Primary completion
- 31 Aug 2026 (estimated)
- Study completion
- 31 Aug 2026 (estimated)
- First posted
- 25 Feb 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
After obtaining informed consent, the investigators will recruit 75 patients with T1DM and 75 with LADA with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation. The study design will include one single visit where patients' medical history and blood samples will be collected. For incident cases, a follow-up visit at 3 months from the start of treatment will be scheduled to assess whether a decrease in HbA1c corresponds to a decrease in the biomarkers. For a comprehensive oxidative balance evaluation, the d-ROMs test will be carried out to evaluate the pro-oxidant status linked to one of the parameters related to the antioxidant potential (BAP test, OXY-Adsorbent test, -SHp test and anti-ROMs test). Parameters will be evaluated using Free Radical Elective Evaluator (FREE) Duo by Diacron International s.r.l. (Grosseto, ITALY), an integrated analytical system that permits any type of chemical-clinical analysis based on the principle of photometry. The investigators will also evaluate high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA). To evaluate if there is an association between a worse stage of the diseases and some oxidative stress markers, the investigators will also evaluate glycated hemoglobin (HbA1c) fasting plasma glucose (FPG), post-prandial glucose (PPG). All plasmatic parameters will be determined after a 12-h overnight fast, with the exception of PPG, determined 2 hours after a standardized meal. Venous blood samples will be taken for all patients between 8 A.M. and 9 A.M. The investigators will use plasma obtained by addition of Na2-ethylenediaminetetraacetic acid (EDTA), 1 mg/ml, and centrifuged at 3000 g for 15 minutes at 4°C. Immediately after centrifugation, the plasma samples will be frozen and stored at -80 °C for no more than 3 months. All measurements will be analyzed by the Laboratory of Molecular Medicine, General Medicine 1, IRCCS Policlinico San Matteo Foundation with proven experience in the dosage of these markers.
Detailed description
The aim of this observational study will be to evaluate the levels of the main oxidative stress markers in T1DM and LADA and to identify if there are some oxidative stress markers specific for the two diseases. Secondary objectives will be to evaluate if there is an association between oxidative stress markers and severity of the diseases.
Primary aim:
Verify whether biomarkers levels depend on the type of disease (T1DM vs LADA), while adjusting for patients' characteristics.
Secondary aims:
2.1) Verify whether biomarkers levels are associated with glycemic control (FPG, HbA1c, PPG).
2.2) In incident cases, to assess whether a decrease in HbA1c corresponds to a decrease in the biomarkers at 3 months from start of treatment within each disease.
2.3) Verify whether these biomarkers tend to form clusters, overall and by diagnosis.
After obtaining informed consent, the investigators will recruit 75 patients with T1DM and 75 with LADA with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation. The study design will include one single visit where patients' medical history and blood samples will be collected. For incident cases, a follow-up visit at 3 months from the start of treatment will be scheduled to assess whether a decrease in HbA1c corresponds to a decrease in the biomarkers. For a comprehensive oxidative balance evaluation, the d-ROMs test will be carried out to evaluate the pro-oxidant status linked to one of the parameters related to the antioxidant potential (BAP test, OXY-Adsorbent test, -SHp test and anti-ROMs test). Parameters will be evaluated using Free Radical Elective Evaluator (FREE) Duo by Diacron International s.r.l. (Grosseto, ITALY), an integrated analytical system that permits any type of chemical-clinical analysis based on the principle of photometry. The investigators will also evaluate high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA). To evaluate if there is an association between a worse stage of the diseases and some oxidative stress markers, the investigators will also evaluate glycated hemoglobin (HbA1c) fasting plasma glucose (FPG), post-prandial glucose (PPG). All plasmatic parameters will be determined after a 12-h overnight fast, with the exception of PPG, determined 2 hours after a standardized meal. Venous blood samples will be taken for all patients between 8 A.M. and 9 A.M. The investigators will use plasma obtained by addition of Na2-ethylenediaminetetraacetic acid (EDTA), 1 mg/ml, and centrifuged at 3000 g for 15 minutes at 4°C. Immediately after centrifugation, the plasma samples will be frozen and stored at -80 °C for no more than 3 months. All measurements will be analyzed by the Laboratory of Molecular Medicine, General Medicine 1, IRCCS Policlinico San Matteo Foundation with proven experience in the dosage of these markers. The investigators will study 10 biomarkers. The sample size calculation is based on feasibility. The investigators expect to enrol 75 patients with T1DM and 75 patients with LADA, of both sexes, aged ≥ 18 and ≤ 75 years.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Type 1 diabetes mellitus | – | –Latent Autoimmune Diabetes in Adult |
| Latent Autoimmune Diabetes in Adult | – | – |
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients with with already known or newly diagnosed type 1 diabetes mellitus or Latent Autoimmune Diabetes in Adult with an age ≥ 18 years and ≤ 75 years, of both sexes. All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation.
Key inclusion criteria (1 listed)
- Patients with with already known or newly diagnosed type 1 diabetes mellitus or LADA Patients aged ≥ 18 years and ≤ 75 years Patients of both sexes All patients will be selected among outpatients attending the Center of Diabetes and Metabolic Diseases of First Department of Internal Medicine, IRCCS Policlinico San Matteo Foundation.
Key exclusion criteria (1 listed)
- Patients refusing to sign informate consent.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Oxidative stress biomarkers
Time frame: Three months
For a comprehensive oxidative balance evaluation, the d-ROMs test will be carried out to evaluate the pro-oxidant status. Test will include BAP test, OXY-Adsorbent test, -SHp test and anti-ROMs test. Parameters will be evaluated using Free Radical Elective Evaluator (FREE) Duo by Diacron International s.r.l. (Grosseto, ITALY), an integrated analytical system that permits any type of chemical-clinical analysis based on the principle of photometry. The investigators will also evaluate high sensitivity C-reactive protein (Hs-CRP), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA).
1 secondary outcome
Glycemic control
Time frame: Three months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Apr 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Type 1 Diabetes Mellitus and Latent Autoimmune Diabetes in Adult (LADA), run by Fondazione IRCCS Policlinico San Matteo di Pavia at 1 site in Italy.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 2 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Oxidative stress biomarkers (time frame: Three months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Apr 2026.