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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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Cover Page

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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Noninvasive prenatal detection of genetic defects.

Proefschri ter verkrijging van

de graad van Doctor aan de Universiteit van Leiden, op gezag van Rector Magnifi cus prof. mr. C.J.J.M. Stolker,

volgens besluit van het College voor Promo es te verdedigen op woensdag 3 februari 2016

klokke 16.15 uur

door

Jessica Maria Elisabeth van den Oever geboren te Roosendaal

in 1980.

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Promotor: Prof. dr. E. Bakker Co-promotor: Dr. E.M.J. Boon Leden promo ecommissie: Prof. dr. M.H. Breuning

Prof. dr. G.C.M.L. Page - Chris aens (UMCU, Utrecht) Prof. dr. D. Oepkes

Prof. dr. C.M.A. van Ravenswaaij - Arts (UMCG, Groningen)

The research described in this thesis was performed at the Laboratory for Diagnostic Genome Analysis of the Leiden University Medical Center.

The prin ng of this thesis was fi nancially supported by BIOKÉ, GC Biotech, NVOG and the De- partment of Clinical Gene cs, Leiden University Medical Center.

ISBN: 978-94-6295431-1

© 2016, Jessica van den Oever

Cover design and printed by: Uitgeverij BOXPress

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Contents

List of abbrevia ons 4

Chapter 1: General introduc on 7

Chapter 2: mRASSF1A-PAP, a novel methyla on-based assay for the detec on of cell-free fetal

DNA in maternal plasma 23

Chapter 3: Single Molecule Sequencing of Free DNA from Maternal Plasma for Noninvasive

Trisomy 21 Detec on 39

Chapter 4: Successful Noninvasive Trisomy 18 Detec on Using Single Molecule Sequencing 55 Chapter 5: A novel targeted approach for noninvasive detec on of paternally inherited muta-

ons in maternal plasma 65

Chapter 6: Noninvasive prenatal diagnosis of Hun ngton Disease; detec on of the paternally inherited expanded CAG repeat in maternal plasma 81

Chapter 7: Discussion 93

Chapter 8: Summary 103

Samenva ng 107

References 111

Curriculum vitae 129

Publica ons and Presenta ons 133

Dankwoord 139

Appendix 1: Confi ned placental mosaicism 143 Appendix 2: Epigene c allelic ra o, haplotype ra o analysis and rela ve muta on dosage.

146 Appendix 3: Calcula ons for trisomy detec on 149

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List of abbrevia ons

Cf(f)DNA Cell-free (fetal) DNA CPM Confi ned placental mosaicism CVS Chorionic villus sampling DMR Diff eren ally methylated region EAR Epigene c allelic ra o

FCT First trimester combined test HTT Hun ng n gene

LNA Locked nucleic acid LTC Long-term culture MP Micropar cle

MPS Massive parallel sequencing MSP Methyla on specifi c PCR NGS Next Genera on Sequencing NIPD Noninvasive prenatal diagnos cs NIPT Noninvasive prenatal tes ng NCV Normalized chromosome value NT Nuchal translucency

PE Paired-end

QF-PCR Quan ta ve fl uorescent PCR

(m)RASSF1A (methylated) Ras associa on (RalGDS/AF-6) domain fami- ly member 1, isoform or transcript variant A

RHD Rhesus D gene RMD Rela ve muta on dosage RSTD Rela ve sequence tag density SMS Single molecule sequencing SNP Single nucleo de polymorphism SRY Sex determining region Y STC Short-term culture T13 Trisomy 13, Patau syndrome T18 Trisomy 18, Edwards syndrome T21 Trisomy 21, Down syndrome TFM True fetal mosaicism WGS Whole genome sequencing

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