The purpose of this study is to evaluate safety of JTT-705 and to demonstrate efficacy of JTT-705 compared with placebo when co-administered with simvastatin 40 mg in patients with low HDL

Inclusion Criteria:

• Patients having lipid values as indicated below:
• HDL-C ≤ 1.0 mmol/L (40 mg/dL)
• TG ≤4.5 mmol/L (400 mg/dL)
• Patients with CHD or CHD risk equivalent
• Male and females between 18 and 70 years of age (female patients must be post-menopausal, surgically sterile or using an acceptable form of contraception)

Exclusion Criteria:

• Body Mass Index of ≥ 35 kg/m2
• Females that are pregnant or breast-feeding, and females of child bearing potential who are not using an effective method of contraception
• Concomitant use of medications identified in the protocol