Please select the eligibility criteria that correspond to the clinical trial below.
Title: Effects of Candesartan Cilexetil (Candesartan) on Diabetic Retinopathy in Type 2 Diabetic Patients With Retinopathy.
Brief Summary: The primary objective is to determine whether candesartan, compared to placebo reduces the progression of diabetic retinopathy in normoalbuminuric type 2 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 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 1 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:

* Outpatients aged 65 years or older, and less than 85 years (at the time of informed consent), regardless of sex
* Current antihypertensive treatment with monotherapy
* SBP ≥ 140mmHg or DBP ≥ 90mmHg in a sitting position on two measurements on two clinic visits
* At least one of the following risk factors:

  * Diabetes mellitus Type 2;
  * History of cerebral infarction, cerebral hemorrhage, subarachnoid hemorrhage, or transient ischemic attack (more than 6 months before giving informed consent);
  * Diagnosis of asymptomatic cerebrovascular disease;
  * History of myocardial infarction (more than 6 months before giving informed consent);
  * Diagnosis of angina pectoris or heart failure (New York Heart Association \[NYHA\] functional classification I or II);
  * Diagnosis of left ventricular hypertrophy (thickness of the wall of interventricular septum ≥ 12mm on echocardiography or Sv1+Rv5 ≥ 35mm on electrocardiography before informed consent);
  * Diagnosis of aortic aneurysm;
  * History of aortic dissection (more than 6 months before giving informed consent);
  * Diagnosis of arteriosclerotic peripheral arterial obstruction (Fontaine classification from 2 to 4);
  * Serum creatinine: 1.2-2.5mg/dL (male); 1.0-2.5mg/dL (female);
  * Proteinuria: ≥ +1 (or ≥ 0.3g/g･Cr. estimated from 24-hour urine collection or random urinary protein corrected by urine creatinine).

Exclusion Criteria:

* Secondary hypertension or malignant hypertension
* Heart failure (NYHA functional classification III or IV)
* Required treatment for malignant tumor
* Serious liver or renal dysfunction (serum creatinine \> 2.5mg/dL or with dialysis treatment)
* Not appropriate for change to the test drugs from current therapy for hypertension or coronary diseases (i.e. calcium channel blockers, β-blockers, thiazide diuretics, etc.)
* History of serious adverse drug reactions to angiotensin II receptor blockers or calcium channel blockers
* Patients with other serious reasons (i.e. illness, significant abnormalities, etc.) that investigators judge inappropriate for the study
B: 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
C: Inclusion Criteria:

* Diagnosed with type 2 diabetes mellitus, as determined by the new American Diabetes Association guidelines, which include a fasting plasma glucose level greater than 126 mg/dl (7.0 mmol/l), or a 2-hour postload value in the oral glucose tolerance test of greater than 200 mg/dl, with confirmation by a retest
* For participants aged 40 years or older, history of CVD (heart attack, stroke, history of coronary revascularization, history of peripheral or carotid revascularization, or demonstrated angina)
* For participants aged 55 years or older, a history of CVD is not required, but participant must be considered to be at high risk for experiencing a CVD event due to existing CVD, subclinical disease, or 2+ CVD risk factors
* HbA1c 7.5%-9% (if on more drugs) or 7.5%-11% (if on fewer drugs)
D: Inclusion Criteria:

Patients who will be included into the study will be from the following groups:

* White European subjects aged between 40-75 years
* Asian, Black, or Chinese subjects aged between 25-75 years

Exclusion Criteria:

Patients will be excluded from the study if they:

* Are housebound
* Have a terminal illness
* Have diabetes mellitus
* Have an active psychotic illness which deems them unable to give informed consent.
* Are pregnant or lactating
* Are taking part in any other clinical trials

Answer: B