title: In combined first-trimester Down syndrome screening, the false-positive rate is not higher in pregnancies conceived after assisted reproduction compared with spontaneous pregnancies.
abstract: The maternal serum levels of pregnancy-associated plasma protein-A (PAPP-A) were reduced in hormonally stimulated pregnancies in the in vitro fertilization and intracytoplasmic sperm injection groups (N=176; PAPP-A: 0.82) and in the entire assisted reproduction group (N=282; PAPP-A: 0.83) as compared with controls (N=24,783; PAPP-A: 0.94). However, the false-positive rate of first-trimester combined screenings was not statistically significantly increased in assisted reproduction pregnancies after adjustment for maternal age.
authors: Department of Obstetrics and Gynaecology, Oulu University Hospital Laboratory, Oulu University Hospital, Oulu, Finland.
authors: Maarit
authors: M
authors: Matilainen
authors: Sini
authors: S
authors: Peuhkurinen
authors: Paivi
authors: P
authors: Laitinen
authors: Ilkka
authors: I
authors: Jarvela
authors: Laure
authors: L
authors: Morin-Papunen
authors: Marku
authors: M
authors: Ryynanen
mesh_terms: D000293:Adolescent; D000328:Adult; D015415:Biomarkers / Q000097:blood*; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood; D004314:Down Syndrome / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000706:statistics & numerical data; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D011261:Pregnancy Trimester, First / Q000097:blood*; D011266:Pregnancy-Associated Plasma Protein-A / Q000378:metabolism; D011296:Prenatal Diagnosis / Q000706:statistics & numerical data*; D027724:Reproductive Techniques, Assisted / Q000706:statistics & numerical data*; D012307:Risk Factors; D055815:Young Adult
chemical_list: D015415:Biomarkers; D018997:Chorionic Gonadotropin, beta Subunit, Human; D011266:Pregnancy-Associated Plasma Protein-A