DPP-IV Inhibitors Underlying Mechanism of Cancer in Diabetic Patients

October 17, 2012 updated by: Kyuzi Kamoi, Nagaoka Red Cross Hospital

Effect of DPP-IV Inhibitors on Occurence of Cancers and the Mechanism Using AGE and RAGE in Patients With Type 2 Diabetes

Recently, DPP-IV inhibitors are used as a novel way to augment the incretin system and one of the newest classes of medications in the treatment of type 2 diabetes mellitus (T2DM). Since the DPP-IV inhibitor was first used, about 5 years have passed in USA. However, there were no major side effects including occurrence of cancers. The main mechanism for DPP-IV inhibitors is due to suppress the function of DPP-IV activity. As it is known that the suppressed DPP-IV activity is a marker for early diagnosis of cancers, the reason of disassociation is not clear.

Activation of receptor for advanced glycation endproduct (AGE) is related to sideration of cancers. Meanwhile, the DPP-IV inhibitors may be related to inhibit the activation of receptor for AGE (RAGE). Therefore, DPP-IV inhibitors may work as a cancer protective agent in diabetes by blocking the AGE-RAGE axis.

However, it is not demonstrated why DPP-IV inhibitors have no side effect of occurrence of cancer via blocking the activation of AGE-RAGE.

The investigators examined effect of DPP-IV inhibitors on frequency of cancers and the underlying mechanism using AGE and RAGE before and 5 years after administration of DPP-IV inhibitors in Japanese patients with T2DM.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The AGE and RAGE are measured using ELISA method in the laboratory of Department of Pathophysiology and Therapeutics of Diabetes Vascular Complications, Kurume University, School of Medicine, Japan before and for 5 years after administration of DPP-IV inhibitors.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
500

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Japan
    • Fukuoka
      • Kurume, Fukuoka, Japan, 830-0111
        • Kurume University
    • Niigata
      • Nagaoka, Niigata, Japan, 940-2085
        • Nagaoka Red Cross Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 95 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

500 patients

Description

Inclusion Criteria:

  • Type 2 diabetes mellitus patients with or without cancer

    • Patients who have no treatment with DPP-IV inhibitors.
    • Outpatients regularly visiting hospital
    • Patients 20 years old (gender is disregarded)

Exclusion Criteria:

  • Patients with a serious complication in the heart, liver or kidney

    • Pregnant or possibly pregnant patients, or lactating patients
    • Patients participating in other clinical study.
    • Other than the above, patients judged inappropriate as the subjects of this study by the investigator

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
DPP-IV inhibitors
Drug: Sitagliptin
The dosage, frequency and duration for each sitagliptin are variant.
Other Names:
  • Other names are not known.
Drug: Alogliptin
The dosage, frequency and duration for each alogliptin are variant.
Other Names:
  • Other names are not known.
Drug: Vildagliptin
The dosage, frequency and duration for each vildagliptin are variant.
Other Names:
  • Other name is not known.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Frequency of cancers
Time Frame: Each one year within 5 years
Each one year within 5 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
AGE concentration
Time Frame: Before and each one year within 5 years
Serum AGE is measured using ELISA at the laboratory of Department pf Pathophysiology and Therapeutics of Diabetes Vascular Complications, Kurume University, which requre as 0.75 ml of serum in each patient.
Before and each one year within 5 years
Receptor for AGE concentration
Time Frame: Before and each one year within 5 years
Serum receptor for AGE is measured using ELISA at the laboratory of Department pf Pathophysiology and Therapeutics of Diabetes Vascular Complications, Kurume University, which requre as 0.75 ml of serum in each patient
Before and each one year within 5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Nagaoka Red Cross Hospital

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Kurume University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Kyuzi Kamoi, MD, Nagaoka Red Cross Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

  • 1.Gooβen K, Gräber S. Longer-term safety of DPP-4 inhibitors in patients with type 2 diabetes mellitus: systematic review and meta-analysis. Diabetes Obes Metab 2012 doi:[Epub ahead of print]. 2.Cornell S. Differentiating among incretin therapies: a multiple-target approach to type 2 diabetes. J Clin Pharm Ther 2012; 21:1365-2710. 3.Cordero OJ, Imbernon M, Chiara LD, Martinez-Zorzano VS, Ayude D, de la Cadena MP, Rodriguez-Berrocal FJ.Potential of soluble CD26 as a serum marker for colorectal cancer detection. World J Clin Oncol 2011;2: 245-61. 4.Taguchi A, Blood DC, del Toro G, Canet A, Lee DC, Qu W, Tanji N, Lu Y, Lalla E, Fu C, Hofmann MA, Kislinger T, Ingram M, Lu A, Tanaka H, Hori O, Ogawa S, Stern DM, Schmidt AM. Blockade of RAGE-amphoterin signalling suppresses tumour growth and metastases. Nature 2000;18;405:354-60.5.Kang R, Loux T, Tang D, Schapiro NE, Vernon P, Livesey KM, Krasinskas A, Lotze MT, Zeh HJ 3rd. The expression of the receptor for advanced glycation endproducts (RAGE) is permissive for early pancreatic neoplasia. Proc Natl Acad Sci U S A 2012 Apr 16. [Epub ahead of print].6.Ishibashi Y, Matsui T, Takeuchi M, Yamagishi S. Sitagliptin augments protective effects of GLP-1 against advanced glycation end product receptor axis in endothelial cells. Horm Metab Res 2011; 43:731-4.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2012

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2017

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 26, 2012

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 27, 2012

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 1, 2012

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 19, 2012

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 17, 2012

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 7-Kamoi

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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