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Cover Page The handle http://hdl.handle.net/1887/37582 holds various files of this Leiden University dissertation.

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The handle http://hdl.handle.net/1887/37582 holds various files of this Leiden University dissertation.

Author: Oever, Jessica Maria Elisabeth van den

Title: Noninvasive prenatal detection of genetic defects

Issue Date: 2016-02-03

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behorende bij het proefschri

NÊÄ®ÄòƒÝ®ò› Öٛăヽ —›ã›‘ã®ÊÄ Ê¥ ¦›Ä›ã®‘ —›¥›‘ãÝ

1. Met behulp van pyrophosphorolyse-geac veerde polymerisa e (PAP) kunnen verschillen in methyla e van het RASSF1A gen gebruikt worden om specifi eke foetale sequen es te detecteren in het plasma van moeder.

Dit proefschriŌ

2. Data gegenereerd met Single Molecule Sequencing gee geen GC bias gezien het feit dat het aantal reads niet toeneemt als het GC percentage toeneemt.

Dit proefschriŌ

3. Ondanks dat de kosten van NGS steeds verder dalen en de mogelijkheden toenemen, is het op dit moment nog niet mogelijk om NIPD voor alle mono- gene aandoeningen technisch effi ciënt en kostendekkend uit te voeren met NGS.

Dit proefschriŌ

4. Na NIPD bij recessieve aandoeningen blij in 50% van de gevallen een inva- sieve ingreep nog steeds noodzakelijk.

Dit proefschriŌ

5. Aangezien het karyotype van foetus en placenta niet volledig overeen hoeven te komen, zou het beter zijn om te refereren naar cell-free placental DNA (cfpDNA) in plaats van cell-free fetal DNA (cff DNA).

6. De labs in Nederland zijn mogelijk niet goed voorbereid wat betre sample aantallen, mocht de NIPT test binnenkort beschikbaar worden voor alle Ne- derlandse vrouwen.

7. Owing to the high incidence of placental mosaicism, careful follow-up by either invasive tes ng or ultrasound examina on will remain essen al in the clinical management of those aneuploidies.

Bayindir et al., European Journal of Human GeneƟ cs (2015) 23, 1286–1293

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8. Expanding the range of tests available to families at risk of monogenic disor- ders, together with the poten al of broadening the scope of tes ng in the future, will bring signifi cant ethical issues that need to be addressed in ad- vance of clinical implementa on.

Daley et al., Arch Dis Child Fetal Neonatal Ed 2014;99:F426-F430

9. “Succes consists of going from failure to failure without loss of enthusiasm”.

Winston Churchill’s Great QuotaƟ on Book ‘From Alamein to Zest for Life’, 2013 10. The way a child discovers the world constantly replicates the way science be-

gan. You start to no ce what’s around you, and you get very curious about how things work. How things interrelate. It’s as simple as seeing a bug that intrigues you. You want to know where it goes at night; who its friends are;

what it eats.

David Chronenberg and Chris Rodley (ed.), Chronenberg on Chronenberg, 1992

11. “Pink isn’t just a color, it’s an a tude”.

Miley Cyrus, singer/songwriter, interview 2008

Jessica van den Oever Leiden, 3 februari 2016

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Methods: Bisulfi te sequencing was performed on maternal genomic (g)DNA and fetal gDNA from chorionic villi to determine diff eren ally methylated regions in the RASSF1A gene

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