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Titration following initiation of BI tends to occur in the first 8-12 weeks. At this time, patients may be at risk of experiencing hypoglycemia, which itself may present a barrier to optimal glycemic control. BRIGHT was the first randomized controlled trial comparing efficacy and safety of two second-generation BI analogs in insulin-naive patients with T2DM, and showed less hypoglycemia with insulin glargine 300 U/mL (Gla-300) vs. insulin degludec 100 U/mL (IDeg) in the initial 12-week titration period. We investigated patient characteristics and clinical outcomes (including HbA1c change, and hypoglycemia incidence during weeks 13-24) by the occurrence of early confirmed (≤70 mg/dL) hypoglycemia (in the titration period) using descriptive statistics. Participants experiencing hypoglycemia within the first 12 weeks tended to be older, had lower BMI, more impaired renal function, longer duration of diabetes, and were more likely to be using SUs at baseline (Table). Overall, hypoglycemia incidence during weeks 13-24 was lower in the group that did not experience hypoglycemia within the first 12 weeks. HbA1c reductions at week 12 were greater in those with hypoglycemia in the titration period. These findings suggest that patients experiencing early hypoglycemia with second-generation BI analogs have increased hypoglycemia risk in later stages of therapy. Disclosure S.B. Harris: Advisory Panel; Self; AstraZeneca, Janssen Pharmaceuticals, Inc., Lilly/Boehringer Ingelheim, Merck & Co., Inc., Novo Nordisk A/S, Sanofi. Consultant; Self; AstraZeneca, Janssen Pharmaceuticals, Inc., Lilly/Boehringer Ingelheim, Merck & Co., Inc., Novo Nordisk Inc., Sanofi. Research Support; Self; Abbott, AstraZeneca, Janssen Pharmaceuticals, Inc., Merck & Co., Inc., Novo Nordisk A/S, Sanofi. Other Relationship; Self; Canadian Diabetes Association, Canadian Institutes of Health Research, The Lawson Foundation. L. Berard: Advisory Panel; Self; Eli Lilly and Company. Consultant; Self; Abbott, Ascensia Diabetes Care, AstraZeneca, Bayer AG, Becton, Dickinson and Company, Janssen Pharmaceuticals, Inc., LifeScan Canada, Mylan, Novo Nordisk Inc., Sanofi. Research Support; Self; Montmed Inc. Speaker9s Bureau; Self; Boehringer Ingelheim Pharmaceuticals, Inc., Merck & Co., Inc. J. Westerbacka: Employee; Self; Sanofi. Stock/Shareholder; Self; Sanofi. Z. Bosnyak: Employee; Self; Sanofi. Stock/Shareholder; Self; Sanofi. L. Melas-Melt: Consultant; Self; Sanofi. F. Lauand: Employee; Self; Sanofi. T.S. Bailey: Advisory Panel; Self; Abbott. Consultant; Self; Capillary Biomedical, Inc., Eli Lilly and Company, Medtronic, Novo Nordisk Inc., Sanofi. Research Support; Self; Abbott, Ascensia Diabetes Care, Becton, Dickinson and Company, Boehringer Ingelheim Pharmaceuticals, Inc., Calibra Medical, Capillary Biomedical, Inc., Companion Medical, Dance Biopharm Holdings Inc., Dexcom, Inc., Diasome Pharmaceuticals, Inc., Eli Lilly and Company, GlySens Incorporated, Kowa Pharmaceutical Europe Co. Ltd., Lexicon Pharmaceuticals, Inc., Medtronic, Novo Nordisk Inc., POPS! Diabetes Care, POPS! Diabetes Care, Sanofi, Senseonics, vTv Therapeutics, Xeris Pharmaceuticals, Inc., Zealand Pharma A/S. Speaker9s Bureau; Self; Abbott, MannKind Corporation, Medtronic, Novo Nordisk Inc., Sanofi US, Senseonics. K. Khunti: Advisory Panel; Self; Amgen Inc., AstraZeneca, Eli Lilly and Company, Merck Sharp & Dohme Corp., Novo Nordisk A/S, Sanofi. Consultant; Self; AstraZeneca, Boehringer Ingelheim International GmbH, Eli Lilly and Company, Janssen Pharmaceuticals, Inc., Merck Sharp & Dohme Corp., Novartis AG, Novo Nordisk A/S, Pfizer Inc., Sanofi-Aventis, Servier, Takeda Pharmaceutical Company Limited. Research Support; Self; AstraZeneca, Boehringer Ingelheim International GmbH, Eli Lilly and Company, Merck Sharp & Dohme Corp., Novartis AG, Novo Nordisk A/S, Pfizer Inc., Sanofi-Aventis. Speaker9s Bureau; Self; AstraZeneca, Berlin-Chemie AG, Boehringer Ingelheim International GmbH, Eli Lilly and Company, Janssen Pharmaceuticals, Inc., Menarini Group, Merck Sharp & Dohme Corp., Novartis AG, Novo Nordisk A/S, Roche Pharma, Sanofi, Servier, Takeda Pharmaceutical Company Limited. Funding Sanofi (NCT02738151)