Altered first-trimester screening markers after IVF/ICSI: no relationship with small-for-gestational-age and number of embryos transferred.
First-trimester serum markers in 110 in-vitro fertilization (IVF) and 331 intracytoplasmatic sperm injection (ICSI) pregnancies were compared with 1431 pregnancies with spontaneous conception. Alterations of serum markers were evaluated with respect to small-for-gestational-age (SGA) growth and number of embryos transferred. For pregnancy-associated plasma protein A (PAPP-A), significantly lower concentrations were observed in IVF and ICSI pregnancies compared with controls (0.86 and 0.9 versus 1.06; P<0.001). Free beta-human chorionic gonadotrophin (betaHCG) values were significantly higher in the IVF/ICSI groups than in controls (1.1 and 1.1 versus 0.94; P<0.005). IVF and ICSI pregnancies showed higher rates of SGA (10.0% and 8.2%) compared with natural conception (4.6%), but differences in PAPP-A concentrations remained significant (P<0.005) after the exclusion of SGA pregnancies. No relationship between serum values and the transfer of one, two or three embryos was observed. Centre-specific corrections may be needed to adjust screening parameters for assisted reproductive technology.
Department of Endocrinology and Reproductive Medicine, University Hospital, Bonn, Germany.
F
F
Bender
J
J
Hecken
J
J
Reinsberg
C
C
Berg
H
H
van der Ven
U
U
Gembruch
A
A
Geipel
D000328:Adult; D015415:Biomarkers / Q000097:blood*; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011266:Pregnancy-Associated Plasma Protein-A / Q000378:metabolism; D012189:Retrospective Studies; D020554:Sperm Injections, Intracytoplasmic
D015415:Biomarkers; D018997:Chorionic Gonadotropin, beta Subunit, Human; D011266:Pregnancy-Associated Plasma Protein-A