Associations Between Diabetes Care and Haptoglobin Genotype On outComes (ADHOC)

July 15, 2020 updated by: Uzi Milman, Clalit Health Services

The ADHOC Project: Associations Between Diabetes Care and Haptoglobin Genotype On outComes

The ADHOC Cohort comprised 3044 DM individuals, treated in 47 CHS primary care clinics, that underwent haptoglobin genotyping between 2 march, 2005 and 26 September 2006. Individuals were eligible for inclusion if they had DM and were 55 years of age or older. All treatment decisions, regarding all aspects of care and follow-up of the study participants, remained at the discretion of the individual's primary care physician, who was blinded to the individual's Hp type. Hp distribution was: Hp 1-1 285 (9.4%); Hp 2-1 1248 (41.0%); Hp 2-2 1511 (49.6%).

Hypothesis: strict glucose control (HbA1c<7%) reduces the rate of cardiovascular events only to diabetic patients with the Hp 2-2 phenotype. We also postulated that, since Hp 2-2 DM individuals are at an increased genetic susceptibility for cardiovascular disease (CVD), this unique cohort merits an investigation on the associations between various CVD risk variables and CVD events and establish whether any evident association was dependent of the individual's Hp type.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

3054

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

Ages Eligible for Study

55 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Patients recruited from primary care clinics. All are diabetic patients 55 years old or older at the time of ICARE initiation (2005).

Description

Inclusion Criteria:

  • Diabetic patients
  • 55 years old or older at the time of ICARE initiation.
  • Known haptoglobin genotype
  • Signed informed consent for ICARE study and registry

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Composite of major CVD events (non fatal MI, Stroke and CVD death)
Time Frame: Data retrived continuously till end of 2015
Clinical data (eg. BP, weight, smoking, etc) medications use, Lab tests and reports on CVD events will be centrally collected from patient's records and Hospital admission summaries. Admission summaries are retrieved using the computerized systems of Clalit Health Services assuring that whenever a patient in the registry is hospitalized the admission summary is retrieve. An events adjudication committee will assess each event in a blinded fashion to determine the nature of the events.
Data retrived continuously till end of 2015

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Non cardiovascular death
Time Frame: Data retrived continuously till end of 2015
Clinical data (eg. BP, weight, smoking, etc) medications use, Lab tests and reports on CVD events will be centrally collected from patient's records and Hospital admission summaries. Admission summaries are retrieved using the computerized systems of Clalit Health Services assuring that whenever a patient in the registry is hospitalized the admission summary is retrieve. An events adjudication committee will assess each event in a blinded fashion to determine the nature of the events.
Data retrived continuously till end of 2015
Revascularization procedures
Time Frame: Data retrived continuously till end of 2015
Clinical data (eg. BP, weight, smoking, etc) medications use, Lab tests and reports on CVD events will be centrally collected from patient's records and Hospital admission summaries. Admission summaries are retrieved using the computerized systems of Clalit Health Services assuring that whenever a patient in the registry is hospitalized the admission summary is retrieve. An events adjudication committee will assess each event in a blinded fashion to determine the nature of the events.
Data retrived continuously till end of 2015

Collaborators and Investigators

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

Sponsor

Clalit Health Services

Investigators

  • Principal Investigator: Uzi Milman, MD, Clalit Health Services, Haifa and Western Galilee District, Haifa, Israel.
  • Principal Investigator: Chen Shapira, MD, Carmel Medical Center, Clalit Health Services

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

March 1, 2005

Primary Completion (Actual)

July 15, 2020

Study Completion (Actual)

July 15, 2020

Study Registration Dates

First Submitted

March 30, 2009

First Submitted That Met QC Criteria

March 30, 2009

First Posted (Estimate)

March 31, 2009

Study Record Updates

Last Update Posted (Actual)

July 16, 2020

Last Update Submitted That Met QC Criteria

July 15, 2020

Last Verified

July 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CMC 08-0090CTIL

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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