Long-term follow-up of children exposed in-utero to progesterone treatment for prevention of preterm birth: study protocol of the AMPHIA follow-up. 2021

Noor E Simons, and Emilie V J van Limburg Stirum, and Aleid G van Wassenaer-Leemhuis, and Martijn J J Finken, and Cornelieke S H Aarnoudse-Moens, and Jaap Oosterlaan, and Anneloes van Baar, and Tessa J Roseboom, and Arianne C Lim, and Madelon van Wely, and Marjon A de Boer, and Rebecca C Painter, and Eva Pajkrt, and Martijn A Oudijk, and Janneke van T Hooft, and
Department of Obstetrics and Gynaecology, Amsterdam Reproduction & Development, Amsterdam UMC Location AMC, Amsterdam, The Netherlands n.e.simons@amsterdamumc.nl.

Preterm birth is one of the main problems in obstetrics, and the most important cause of neonatal mortality, morbidity and neurodevelopmental impairment. Multiple gestation is an important risk factor for preterm birth, with up to 50% delivering before 37 weeks. Progesterone has a role in maintaining pregnancy and is frequently prescribed to prevent (recurrent) preterm birth and improve pregnancy outcomes in high-risk patients. However, little is known about its long-term effects in multiple gestations. The objective of this follow-up study is to assess long-term benefits and harms of prenatal exposure to progesterone treatment in multiple gestations on child development. This is a follow-up study of a multicentre, double-blind, placebo-controlled randomised trial (AMPHIA trial, ISRCTN40512715). Between 2006 and 2009 women with a multiple gestation were randomised at 16-20 weeks of gestation to weekly injections 250 mg 17α-hydroxyprogesterone caproate or placebo, until 36 weeks of gestation or delivery. The current long-term follow-up will assess all children (n=1355) born to mothers who participated in the AMPHIA trial, at 11-14 years of age, with internationally validated questionnaires, completed by themselves, their parents and their teachers. Additional outcomes are death (perinatal and up to age 14), gender identity, educational performance and health-related problems. We will use intention-to-treat analyses comparing experimental and placebo group. To adjust for the correlation between twins, general linear mixed-effects models will be used. Amsterdam UMC MEC provided a waiver for the Medical Research Involving Human Subjects Act (W20_234#20.268). Results will be disseminated through peer-reviewed journals and summaries shared with stakeholders, patients and participants. This protocol is published before analysis of the results. NL8933.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008297 Male Males
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011272 Pregnancy, Multiple The condition of carrying two or more FETUSES simultaneously. Multiple Pregnancy,Multiple Pregnancies,Pregnancies, Multiple
D011374 Progesterone The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the UTERUS, the MAMMARY GLANDS and the BRAIN. It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from PREGNENOLONE, also serves as an intermediate in the biosynthesis of GONADAL STEROID HORMONES and adrenal CORTICOSTEROIDS. Pregnenedione,Progesterone, (13 alpha,17 alpha)-(+-)-Isomer,Progesterone, (17 alpha)-Isomer,Progesterone, (9 beta,10 alpha)-Isomer
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D005783 Gender Identity A person's concept of self as being male and masculine or female and feminine, or ambivalent, based in part on physical characteristics, parental responses, and psychological and social pressures. It is the internal experience of gender role. Gender,Gender Identities,Identity, Gender
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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