ELEONOR STUDY: Insulin Glulisine in Type 2 Diabetes Mellitus.

Inclusion criteria: * Diagnosis of type 2 Diabetes Mellitus * Patients treated with combined oral antidiabetic drugs(as fixed combination or simultaneous administration) or with metformin in monotherapy at maximal doses for at least 3 months * Patients having BMI \> 25 Kg/m2; * Patients having a HbA1c ≥ 7.5 % and ≤ 11 % * Female patients must be menopausal, surgically sterile, or using effective contraceptive measures; * Female of childbearing potential must use effective contraceptive measures for at least 1 month prior to the entry into the study and should continue to use the same contraceptive method during the overall study period. Exclusion criteria: * Patients diagnosed with type 1 insulin dependent Diabetes Mellitus; * History of two or more severe hypoglycaemic episodes within the past 3 months or history of unawareness hypoglycaemia; * Active proliferative diabetic retinopathy, as defined by the application of focal or panretinal photocoagulation or vitrectomy, in the 6 months prior to visit 1, or any other unstable (rapidly progressing) retinopathy that may require surgical treatment (including laser photocoagulation); * Impaired renal function * Impaired liver function * History of hypersensitivity to insulin or insulin analogues or any of the excipients in the Insulin glulisine and Insulin glargine formulation * History of hypersensitivity to metformin; * Pregnant or breast-feeding women, or women planning to become pregnant during the study; * Failure to use adequate contraception (women of current reproductive potential only); * Any clinically significant major organ system disease such as relevant cardiovascular, gastrointestinal, hepatic, neurological, endocrine, haematological or other major systemic diseases or infective diseases; * History of drug or alcohol abuse within the last 2 years or current addiction to substances of abuse; * Night shift workers; * Receipt of an experimental drug or use of an experimental device within the 30 days prior to study entry; * Mental condition rendering the subject unable to understand the nature, scope, and possible consequences of the study; * Treatment or likelihood of requiring treatment during the study period with drugs not permitted by the clinical study protocol; * Any disease or condition including abuse of illicit drugs, prescription medicines or alcohol that in the opinion of the investigator or sponsor may interfere with the completion of the study; * Subject unlikely to comply with protocol, e.g., uncooperative attitude, inability to return for follow-up visits, and unlikelihood of completing the study procedures; * Subject is the investigator or any sub investigator, research assistant, pharmacist, study coordinator, other staff or relative thereof directly involved in the conduct of the protocol; * Previous enrolment in the present study. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.