Not applicableWithdrawnNCT00347464What this trial is testingAdaptive Behavior Assessment of Men With 49, XXXXY, Klinefelter SyndromeWho this might be right forKlinefelter Syndrome University of Wisconsin, Madison
Not applicableLooking for participantsNCT03396562What this trial is testingThe eXtroardinarY Babies Study: Natural History of Health and Neurodevelopment in Infants and Young Children With Sex Chromosome TrisomyWho this might be right forKlinefelter SyndromeTrisomy XXYY Syndrome+9 more University of Colorado, Denver 300
Not applicableLooking for participantsNCT04463316What this trial is testingGROWing Up With Rare GENEtic SyndromesWho this might be right forPrader-Willi SyndromePWS-like SyndromeSilver Russel Syndrome+30 more dr. Laura C. G. de Graaff-Herder 600