Please select the eligibility criteria that correspond to the clinical trial below.
Title: DIRECT: DIabetic Retinopathy Candesartan Trials. Effects of Candesartan Cilexetil (Candesartan) on Diabetic Retinopathy in Type 1 Diabetic Patients With Retinopathy.
Brief Summary: The primary objective is to determine whether candesartan, compared to placebo reduces the progression of diabetic retinopathy in normotensive, normoalbuminuric type 1 diabetic patients with retinopathy.

The secondary objective is to determine whether candesartan, compared to placebo, reduces the incidence of clinically significant macular oedema (CSME) and/or proliferative diabetic retinopathy (PDR) and beneficially influences the rate of change in urinary albumin excretion rate (UAER).

This study is part of the DIRECT Programme also including a primary prevention study of diabetic retinopathy in type 1 diabetes and a secondary prevention study in type 2 diabetes. The primary objective for all three pooled studies is to determine whether candesartan, compared to placebo, reduces the incidence of microalbuminuria in type 1 and type 2 diabetic patients.


Options:
A: Inclusion Criteria:

* Diabetes type 1 patient
* Normotensive
* Normoalbuminuric
* Signed informed consent
* Female and male
* Over 17 years of age
* Diabetes duration over 10 years

Exclusion Criteria:

* Hypertension
* Microalbuminuria
* Pregnancy
* Lactation
* Reduced kidney function
* Artery stenosis
* Kidney transplantation
* Allergy to the medication in the study
* Reduced liver function
* Alcohol or drug abuse
* Participation in another drug or clinical test during last 30 days
* Severe diseases i.e. malignancy
* Previously enrolment of the present study
B: Inclusion Criteria:

* Diabetes mellitus type 2, defined as fasting blood glucose of greater than or equal to 126 mg/dL;
* Presence of at least one of the following cardiovascular risk factors:

  1. total cholesterol greater than 200 mg/dL or statin treatment,
  2. High density lipoprotein (HDL) less than 40 mg/dL,
  3. triglycerides greater than 150 mg/dL and less than 400 mg/dL,
  4. blood pressure greater than or equal to 130/80 mmHg,
  5. Body mass index (BMI) greater than 28 kg/m2,
  6. waist circumference greater than 102 cm for men and greater than 88 cm for women,
  7. smoking of more than 5 cigarettes a day;
* Normoalbuminuria at screening

Exclusion Criteria:

* Severe uncontrolled hyperlipidemia;
* Documented renal and/or renal-vascular disease;
* Myocardial infarction, stroke or myocardial revascularization within the last 6 months;
* History of alcohol and/or drug abuse;
* Allergic reaction, lack of response or contraindication to angiotensin receptor blockers (ARBs);
* Current treatment with an ARB or angiotensin converting enzyme (ACE) inhibitor
C: Inclusion Criteria:

* Male or female aged 18 - 55 years with type 1 diabetes diagnosed before age of 36 years and in need for continuous insulin treatment within 1 year of diagnosis of diabetes are included.
* Duration of diabetes for \> 1 year and \< 20 years with stable diabetic therapy within last 6 months.
* Patients with untreated resting mean sitting SBP \< 130 mmHg, mean sitting DBP \< 85 mmHg and with retinal photograph grading level \> 20/10 up to \< 47/47 (on ETDRS severity scale).

Exclusion Criteria:

* Patients with the following conditions are excluded from participation on the study:
* Cataract or media opacity of a degree which precludes taking gradable retinal photographs
* Angle closure glaucoma, which precludes pharmacological dilatation of the pupil
* History or presence of proliferative retinopathy
* History or presence of clinical significant macular oedema (CSME)
* History or evidence of photocoagulation of the retina
* Other retinal conditions which may mask assessment, eg, retinal vein occlusion
* Positive micral dipstick test
* Presence of secondary diabetes
* Pregnant or lactating women or women of child bearing potential not practicing an adequate method of contraception
* Need of treatment with ACE-inhibitor
* Haemodynamically significant aortic or mitral valve stenosis
* Known renal artery stenosis or kidney transplantation
* Hypersensitivity to study drug
* Severe concomitant disease which may interfere with the assessment of the patient, eg, malignancy, as judged by the investigator
D: Inclusion Criteria:

* Male or female aged 37 - 75 years with type 2 diabetes diagnosed at age of 36 years or thereafter.
* Duration of diabetes for \> 1 year and \< 20 years with stable diabetic therapy within last 6 months.
* Patients with untreated resting mean sitting SBP \< 130 mmHg and mean sitting DBP \< 85 or treated resting mean SBP \< 160 mmHg and mean sitting DBP \< 90 mmHg with retinal photograph grading level \>20/10 up to \< 47/47 (on ETDRS severity scale).

Exclusion Criteria:

* Patients with the following conditions are excluded from participation in the study:
* Cataract or media opacity of a degree which precludes taking gradable retinal photographs
* Angle closure glaucoma, which precludes pharmacological dilatation of the pupil
* History of or presence of proliferative retinopathy
* History or presence of clinical significant macular oedema (CSME)
* History or evidence of photocoagulation of the retina
* Other retinal conditions which may mask assessment, eg, retinal vein occlusion
* Positive micral dipstick test
* Presence of secondary diabetes
* Pregnant or lactating women or women of child bearing potential not practicing an adequate method of contraception
* Need of treatment with ACE-inhibitor
* Haemodynamically significant aortic or mitral valve stenosis
* Known renal artery stenosis or kidney transplantation
* Hypersensitivity to study drug
* Severe concomitant disease which may interfere with the assessment of the patient, eg, malignancy, as judged by the investigator

Answer: C