['type 2 diabetes mellitus']
['ertugliflozin', 'sitagliptin', 'placebo to ertugliflozin', 'placebo to sitagliptin', 'glimepiride']

        Inclusion Criteria:

          -  Type 2 diabetes mellitus as per American Diabetes Association guidelines

          -  Not on antihyperglycemic agent (AHA) >=8 weeks with a Visit 1/Screening HbA1C >=8.0%
             and <=10.5% (>=64 mmol/mol and <=91 mmol/mol) OR on single allowable AHA (allowable
             AHAs prior to screening are: metformin, α-glucosidase inhibitors, sulfonylureas and
             glinides) with a Visit 1/Screening HbA1C >=7.5% and <=10.0% (>=58 mmol/mol and <=86
             mmol/mol) OR on low-dose dual combination therapy (≤50% of maximum labeled dose of an
             AHA) with allowable AHAs with a Visit 1/Screening HbA1C >=7.5% and <=10.0% (>=58
             mmol/mol and <=86 mmol/mol)

          -  Body mass index (BMI) >=18.0 kg/m^2

          -  Male or female not of reproductive potential

          -  Female of reproductive potential who agrees to (or have their partner agree to) remain
             abstinent from heterosexual activity or to use 2 acceptable combinations of
             contraception.

        Exclusion Criteria:

          -  History of type 1 diabetes mellitus or diabetic ketoacidosis

          -  History of other specific types of diabetes (e.g., genetic syndromes, secondary
             pancreatic diabetes, diabetes due to endocrinopathies, drug- or chemical-induced, and
             post-organ transplant

          -  A known hypersensitivity or intolerance to any sodium glucose co-transporter (SGLT2)
             inhibitor or sitagliptin

          -  Has been treated with any of the following agents within 12 weeks of study start or
             during the pre-randomization period: insulin of any type (except for short-term use
             [i.e., <=7 days] during concomitant illness or other stress), other injectable
             anti-hyperglycemic agents (e.g., pramlintide, exenatide, liraglutide), pioglitazone or
             rosiglitazone, other sodium glucose co-transporter 2 (SGLT2) inhibitors,
             dipeptidyl-peptidase 4 inhibitors (DPP-4 inhibitors), bromocriptine (Cycloset™),
             colesevelam (Welchol™), any other AHA with the exception of the protocol-approved
             agents

          -  Is on a weight-loss program or weight-loss medication or other medication associated
             with weight changes and is not weight stable prior to study start

          -  Has undergone bariatric surgery within the past 12 months or >12 months and is not
             weight stable prior to study start

          -  A history of myocardial infarction, unstable angina, arterial revascularization,
             stroke, transient ischemic attack, or New York Heart Association (NYHA) functional
             Class III-IV heart failure within 3 months of study start

          -  Active, obstructive uropathy or indwelling urinary catheter

          -  History of malignancy <=5 years prior to study start, except for adequately treated
             basal cell or squamous cell skin cancer or in situ cervical cancer

          -  A known history of human immunodeficiency virus (HIV)

          -  A blood dyscrasia or any disorder causing hemolysis or unstable red blood cells, or a
             clinically important hematological disorder (e.g. aplastic anemia, myeloproliferative
             or myelodysplastic syndromes, thrombocytopenia)

          -  A medical history of active liver disease (other than non-alcoholic hepatic
             steatosis), including chronic active hepatitis B or C, primary biliary cirrhosis, or
             symptomatic gallbladder disease

          -  Any clinically significant malabsorption condition

          -  Current treatment for hyperthyroidism

          -  On thyroid replacement therapy and not on a stable dose for at least 6 weeks prior
             study start

          -  On a previous clinical study with ertugliflozin

          -  Participated in other studies involving investigational drug(s) 30 days prior to study
             start

          -  Surgical procedure within 6 weeks prior to study start or major surgery planned during
             the trial

          -  Positive urine pregnancy test

          -  Pregnant or breast-feeding, or planning to conceive during the trial, including 14
             days following the last dose of study medication

          -  Planning to undergo hormonal therapy in preparation for egg donation during the trial,
             including 14 days following the last dose of study medication

          -  Routinely consumes >2 alcoholic drinks per day or >14 alcoholic drinks per week or
             engages in binge drinking

          -  Donated blood or blood products within 6 weeks of study start.
      