Strict Versus Permissive Thresholds for Initiation of Pharmacotherapy in Gestational Diabetes (START 2)

Summary

The aim of our study is to compare neonatal and maternal outcomes using different thresholds for the initiation and titration of pharmacotherapy for gestational diabetes (GDM). Our goal is to compare a Strict and permissive threshold. The Strict study arm target range will be 65-120 mg/dL, with time in range goal of 70%. The permissive study arm target range will be 65-140 mg/dL, with target time in range goal of 70%.

Timeline

Start

2024-09-01

Primary completion

2026-05

Completion

2026-05

Publications

• Background Kunarathnam V, Vadakekut ES, Mahdy H. Gestational Diabetes. 2025 Sep 15. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Available from http://www.ncbi.nlm.nih.gov/books/NBK545196/
• Background Catalano PM, Hauguel-De Mouzon S. Is it time to revisit the Pedersen hypothesis in the face of the obesity epidemic? Am J Obstet Gynecol. 2011 Jun;204(6):479-87. doi: 10.1016/j.ajog.2010.11.039. Epub 2011 Feb 2.
• Background Gregory EC, Ely DM. Trends and Characteristics in Gestational Diabetes: United States, 2016-2020. Natl Vital Stat Rep. 2022 Jul;71(3):1-15.
• Background Metzger BE, Persson B, Lowe LP, Dyer AR, Cruickshank JK, Deerochanawong C, Halliday HL, Hennis AJ, Liley H, Ng PC, Coustan DR, Hadden DR, Hod M, Oats JJ, Trimble ER; HAPO Study Cooperative Research Group. Hyperglycemia and adverse pregnancy outcome study: neonatal glycemia. Pediatrics. 2010 Dec;126(6):e1545-52. doi: 10.1542/peds.2009-2257. Epub 2010 Nov 15.
• Background ACOG Practice Bulletin No. 190: Gestational Diabetes Mellitus. Obstet Gynecol. 2018 Feb;131(2):e49-e64. doi: 10.1097/AOG.0000000000002501.
• Background Crowther CA, Hiller JE, Moss JR, McPhee AJ, Jeffries WS, Robinson JS; Australian Carbohydrate Intolerance Study in Pregnant Women (ACHOIS) Trial Group. Effect of treatment of gestational diabetes mellitus on pregnancy outcomes. N Engl J Med. 2005 Jun 16;352(24):2477-86. doi: 10.1056/NEJMoa042973. Epub 2005 Jun 12.
• Background Landon MB, Spong CY, Thom E, Carpenter MW, Ramin SM, Casey B, Wapner RJ, Varner MW, Rouse DJ, Thorp JM Jr, Sciscione A, Catalano P, Harper M, Saade G, Lain KY, Sorokin Y, Peaceman AM, Tolosa JE, Anderson GB; Eunice Kennedy Shriver National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network. A multicenter, randomized trial of treatment for mild gestational diabetes. N Engl J Med. 2009 Oct 1;361(14):1339-48. doi: 10.1056/NEJMoa0902430.
• Background Hartling L, Dryden DM, Guthrie A, Muise M, Vandermeer B, Donovan L. Benefits and harms of treating gestational diabetes mellitus: a systematic review and meta-analysis for the U.S. Preventive Services Task Force and the National Institutes of Health Office of Medical Applications of Research. Ann Intern Med. 2013 Jul 16;159(2):123-9. doi: 10.7326/0003-4819-159-2-201307160-00661.
• Background Davitt C, Flynn KE, Harrison RK, Pan A, Palatnik A. Current practices in gestational diabetes mellitus diagnosis and management in the United States: survey of maternal-fetal medicine specialists. Am J Obstet Gynecol. 2021 Aug;225(2):203-204. doi: 10.1016/j.ajog.2021.04.263. Epub 2021 May 14. No abstract available.
• Background Caissutti C, Saccone G, Ciardulli A, Berghella V. Very tight vs. tight control: what should be the criteria for pharmacologic therapy dose adjustment in diabetes in pregnancy? Evidence from randomized controlled trials. Acta Obstet Gynecol Scand. 2018 Mar;97(3):235-247. doi: 10.1111/aogs.13257. Epub 2017 Dec 14.
• Background Harrison RK, Cruz M, Wong A, Davitt C, Palatnik A. The timing of initiation of pharmacotherapy for women with gestational diabetes mellitus. BMC Pregnancy Childbirth. 2020 Dec 11;20(1):773. doi: 10.1186/s12884-020-03449-y.
• Background Landy HJ, Gomez-Marin O, O'Sullivan MJ. Diagnosing gestational diabetes mellitus: use of a glucose screen without administering the glucose tolerance test. Obstet Gynecol. 1996 Mar;87(3):395-400. doi: 10.1016/0029-7844(95)00460-2.
• Background Harper LM, Mele L, Landon MB, Carpenter MW, Ramin SM, Reddy UM, Casey B, Wapner RJ, Varner MW, Thorp JM Jr, Sciscione A, Catalano P, Harper M, Saade G, Caritis SN, Sorokin Y, Peaceman AM, Tolosa JE; Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Maternal-Fetal Medicine Units (MFMU) Network. Carpenter-Coustan Compared With National Diabetes Data Group Criteria for Diagnosing Gestational Diabetes. Obstet Gynecol. 2016 May;127(5):893-898. doi: 10.1097/AOG.0000000000001383.
• Background Blum AK. Insulin Use in Pregnancy: An Update. Diabetes Spectr. 2016 May;29(2):92-7. doi: 10.2337/diaspect.29.2.92.
• Background Fenton TR, Kim JH. A systematic review and meta-analysis to revise the Fenton growth chart for preterm infants. BMC Pediatr. 2013 Apr 20;13:59. doi: 10.1186/1471-2431-13-59.

Drugs

Indications