Please select the eligibility criteria that correspond to the clinical trial below.
Title: A 13 Week, Double-Blind, Placebo-Controlled Phase 4 Trial of Pregabalin (CI-1008, 600 mg/Day) for Relief of Pain in Subjects With Painful Diabetic Peripheral Neuropathy
Brief Summary: The purposes of this study are to: 1) find out if pregabalin relieves pain in subjects with painful diabetic peripheral neuropathy; 2) find out if pregabalin is safe at a dose of 600 mg/day (taken twice a day); and 3) find out if changes in nerve function happen during the study.


Options:
A: Inclusion Criteria:

* Adults with Type 1 or 2 diabetes
* Patients must have pain in their lower legs or feet due to painful diabetic neuropathy that has lasted for at least 3 months

Exclusion Criteria:

* Patients must not be in poor or unstable health.
B: Inclusion Criteria:

1. 18 years of age or above
2. Have a diagnosis of Diabetes mellitus for at least a year
3. Agree not to smoke whilst resident in the CRC
4. Able to understand the patient information sheet and provide written informed consent
5. Score above 12 on the LANSS
6. Have neuropathic pain of diabetic origin
7. Score above 25 on MMSE
8. Willing to withdraw, under the guidance of their diabetologist, from any current pain medication prior to their first visit to the sleep laboratory. Duration of withdrawal will be at least equivalent to 5 half-lives and will be of a relevant duration given the particular medication used.

Exclusion Criteria:

1. There is evidence of an end stage disease of a major system (hepatic, renal, respiratory, haematologic (PA), immunologic, cardiovascular, inflammatory, rheumatology, active infections, peripheral vascular disease, untreated endocrine(hypothyroid)
2. There is evidence of a recent ischaemic event
3. There is evidence of recurrent and/or severe hypoglycemia requiring assistance in last 3 years
4. Evidence of sleep pathology that would interfere with the assessment of treatment (assessed on habituation night)
5. Currently receiving treatment for malignancy
6. Suffer from seizures including epilepsy
7. There is evidence of a history of dependence on or abuse of alcohol/recreational drugs
8. Need to use a wheel chair (incompatible with studies in a sleep laboratory)
9. Involved in a clinical trial in last 3 months
10. Pregnant, lactating or inadequate contraception
11. Vision inadequate for the performance tests (as assessed at screening)
12. Colour Blind
13. Will not co-operate with study procedures
14. Will not give permission to inform GP
C: Inclusion Criteria:

1. Age \> 18 years of age
2. Able to give informed consent and willing to comply with scheduled visits, treatment plan, laboratory tests, and other trial procedures
3. Type 1 or type 2 diabetes with a hemoglobin A1c (HbA1c) ≤ 10% at Screening and on a stable antidiabetic medication regimen for at least 30 days prior to Screening (insulin therapy is acceptable)
4. Painful distal symmetrical sensorimotor polyneuropathy (as per American Society of Pain Educators guidelines ) diagnosed for at least 6 months, based on neurological history and/or examination; diagnosis includes absent or reduced deep tendon reflexes at both ankles
5. At Screening, a pain score of ≥ 40 mm on the SF-MPQ VAS
6. At Randomization, a pain score of ≥ 40 mm on the SF-MPQ VAS and an ADPS of ≥ 4 on the 11-point NRS, the latter calculated from a minimum of 4 pain ratings in daily diaries obtained during the 1-week Baseline Period (prior to randomization)
7. Creatinine clearance \> 60 mL/min (estimated using the Cockcroft-Gault equation)
8. Antidiabetic and other medications anticipated to remain stable and constant during the study period
9. Women of child bearing potential (WOCBP) must be using an adequate method of contraception as detailed in the protocol to avoid pregnancy during the study and for 4 weeks after study completion

Exclusion Criteria:

1. Diagnosis of mononeuropathy
2. Use of concomitant medications that may confound assessments of efficacy and/or safety (see Section 5.2)
3. Major psychiatric disorders
4. Have had a malignancy other than basal cell carcinoma within the past 2 years
5. At Visit 1, have a white blood cell count \< 2500/mm3, neutrophil count \< 1500/mm3, or platelet count \< 100 x 103/mm3
6. Clinically significant unstable diabetes mellitus, unstable hepatic, respiratory, or hematologic illness, unstable cardiovascular disease (including myocardial infarction in the 3 months prior to Visit 1), or symptomatic peripheral vascular disease
7. Clinically significant findings on the Screening ECG
8. History of pernicious anemia, untreated hypothyroidism, chronic hepatitis B, hepatitis B within the past 3 months, or human immunodeficiency virus infection
9. Amputations of body parts other than toes
10. Prior therapeutic failure of pregabalin or gabapentin (considered unresponsive or intolerant to treatment); therapeutic failure implies lack of efficacy following full titration to effective doses (eg, 300 mg/day for pregabalin)
11. Known hypersensitivity to pregabalin or gabapentin
12. Requirement for concomitant anticonvulsant and antidepressant therapy, with the exception of stable doses of SSRIs
13. Neurologic disorders unrelated to DPN that may confound the assessment of pain associated with DPN
14. Skin conditions that could alter sensation
15. Other sources of pain that may confound assessment or self-evaluation of the pain due to DPN
16. Abuse of prescription medications, street drugs or alcohol (including alcohol dependence) within the last 1 year
17. Current enrollment in another investigational study, participation in another investigational study with the past 30 days, or other current or recent use of any investigational drug
18. Pregnancy (as based on lab test results) or breast feeding
19. Laboratory values exceeding limits listed in Table 4.1 of the protocol
D: Inclusion Criteria:

* Diagnosis of PHN with pain present for at least three months after the healing of a Herpes Zoster skin lesion.
* Subjects must have completed the Daily Pain Rating Scale in the electronic diary at least 4 times during screening and have an average daily pain rating score of greater than or equl to 4 during the 7 +/- 3 days prior to randomization (Visit 2).

Exclusion Criteria:

* History of neurolytic or neurosurgical therapy for PHN.
* Presence of any severe pain associated with conditions other than PHN that may confound the assessment or self-evaluation of the pain due to PHN.

Answer: A