hrp0097t13 | Section | ESPE2023

Single-nuclei RNA sequencing reveals potential mechanisms of ovarian insufficiency in 45,X Turner Syndrome

M McGlacken-Byrne Sinead , Del Valle Ignacio , Xenakis Theodoros , Nel Lydia , Liptrot Danielle , Solanky Nita , C Conway Gerard

Background: Turner syndrome (TS) arises from a complete or partial loss of one X chromosome (45,X) and is the most common genetic cause of primary ovarian insufficiency (POI) in women. Surprisingly little is understood about the pathogenesis of POI in TS beyond an acknowledged germ cell loss throughout the second trimester. Although X chromosome haploinsufficiency likely contributes, the variability in reproductive phenotype in 45,X TS suggests it is not the o...

hrp0098fc5.3 | Growth and Syndromes | ESPE2024

Gene expression of monosomy × during human development reveals potential mechanisms in Turner syndrome

Suntharalingham Jenifer , Del Valle Ignacio , Buonocore Federica , McGlacken-Byrne Sinead , Brooks Tony , Ogunbiyi Olumide , Liptrot Danielle , Dunton Nathan , Madhan Gaganjit , Metcalfe Kate , Nel Lydia , Marshall Abigail , Ishida Miho , Sebire Neil , Moore Gudrun , Crespo Berta , Solanky Nita , Conway Gerard , Achermann John

Background: Monosomy × (45,X) is associated with Turner syndrome (TS) and pregnancy loss; however, the underlying mechanisms remain unclear. Girls and young women with TS/45,X can present with diverse clinical features and at different ages, including early postnatal life, suggesting that at least some mechanisms may be defined during early fetal development.Aims: To explore transcriptomic expression profiles in ke...