Semaglutide is a new GLP-1 analog for the once-weekly treatment of T2D. This post-hoc analysis assessed the effect of semaglutide on renal function by baseline eGFR in the SUSTAIN 6 trial. Overall, mean eGFR decreased from baseline to week 104 across all treatment groups and subgroups, with the largest decreases in subjects with normal renal function or mild renal impairment (Figure). Urine albumin-to-creatinine ratio decreased with increasing renal impairment for semaglutide 1.0 mg, but not other treatment groups (Table). AEs related to acute renal failure were generally higher with increasing baseline renal impairment, except with semaglutide 1.0 mg vs. placebo. New or worsening nephropathy was lower with both doses of semaglutide vs. placebo (Table). No renal-related safety issues were observed with semaglutide regardless of baseline renal function in SUSTAIN 6. Disclosure T. Vilsbøll: Advisory Panel; Self; Amgen Inc., Boehringer Ingelheim GmbH, Eli Lilly and Company, AstraZeneca, MSD K.K., Sanofi, Novo Nordisk A/S. Consultant; Self; Amgen Inc., Boehringer Ingelheim GmbH, Eli Lilly and Company, AstraZeneca, MSD K.K., Sanofi, Novo Nordisk A/S. Speaker's Bureau; Self; Amgen Inc., Boehringer Ingelheim GmbH, Eli Lilly and Company, AstraZeneca, MSD K.K., Sanofi, Novo Nordisk A/S. Research Support; Self; Eli Lilly and Company, Novo Nordisk A/S. J. Gumprecht: Speaker's Bureau; Self; AstraZeneca. Consultant; Self; Bayer AG. Speaker's Bureau; Self; Bioton, Berlin-Chemie AG, Eli Lilly and Company, Merck Sharp & Dohme Corp., Boehringer Ingelheim GmbH, Novo Nordisk A/S, Polfa Tarchomin S.A., Polpharma. R.J. Silver: Consultant; Self; Novo Nordisk Inc.. Speaker's Bureau; Self; Novo Nordisk Inc., Eli Lilly and Company, AstraZeneca. T. Hansen: None. J. Pettersson: Employee; Self; Novo Nordisk A/S. J.P. Wilding: Other Relationship; Self; Astellas, AstraZeneca, Boehringer Ingelheim GmbH, Janssen Pharmaceuticals, Inc., Novo Nordisk Inc., Sanofi, Eli Lilly and Company, Orexigen Therapeutics, Inc., Merck & Co., Inc..