Extension Study to Assess Safety and Efficacy of Mylan's Insulin Glargine and Lantus® in Type 1 Diabetes Mellitus Patients

This multi-center, open-label, randomized clinical extension study in patients with T1DM
will assess safety and efficacy of Mylan's insulin glargine and Lantus®.

Patients with an established diagnosis of T1DM per American Diabetes Association 2014
criteria who were randomized to the Lantus® treatment arm of the Mylan Glargine 3001 study,
and who have completed the 52-week treatment period on Lantus® will be eligible to be
screened for the MYL-1501D-3003 study.

Inclusion Criteria:

1. Patients who have completed the 52-week treatment period (irrespective of their age
at the completion of MYL-GAI-3001 trial) of the MYL-GAI-3001 trial and were assigned
to Lantus® in that study.

2. Patients or their legal representatives must give written and signed informed consent
before starting any protocol-specific procedures.

3. The patient is able and willing to comply with the requirements of the extension
study protocol including the 8-point self-monitoring blood glucose, completion of
patient diary records as instructed and following a recommended diet and exercise
plan for the entire duration of the extension study.

4. Female patients complying with the following:

- Female patients of childbearing potential must be using oral contraception or
two other acceptable methods of contraception, (e.g., intra-uterine device plus
condom, spermicidal gel plus condom, diaphragm plus condom, etc.) from the time
of randomization throughout the entire study.

- Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation
methods) and withdrawal are not acceptable methods of contraception.

- Postmenopausal females must have had no menstrual bleeding for at least 1 year
prior to inclusion in MYL-GAI-3001 study.

- Female patients who report surgical sterilization must have had the procedure at
least 6 months prior to inclusion to MYL-GAI-3001 study.

- All female patients of childbearing potential, must have negative pregnancy test
results at baseline (week 0) and at each clinic visit as per the SCHEDULE OF
ACTIVITIES.

- If female patients have male partners who have undergone vasectomy, the
vasectomy must have occurred more than 6 months prior to inclusion in
MYL-GAI-3001 study.

Exclusion Criteria:

1. History or presence of a medical condition or disease that in the Investigator's
opinion would place the patient at an unacceptable risk from trial participation.

2. History of clinically significant (i.e., significant enough to alter the insulin dose
requirement, as per the Investigator) acute bacterial, viral or fungal systemic
infections in the 4 weeks prior to inclusion / randomization (recorded while
collecting patient history) in to the MYL-1501D-3003 extension study

3. Patients scheduled to receive another investigational drug during the extension study
period

4. Any major elective surgery requiring hospitalization planned during the extension
study period.

5. Moderate insulin resistance, defined as requiring insulin (Basal + Prandial) of ≥1.5
U/kg/day (Lantus® in U/kg/day or Mylan's insulin glargine in IU/kg/day).