Haploseek: a 24-hour all-in-one method for preimplantation genetic diagnosis (PGD) of monogenic disease and aneuploidy

  • Daniel Backenroth
  • , Fouad Zahdeh
  • , Yehuda Kling
  • , Aharon Peretz
  • , Tzvia Rosen
  • , Dina Kort
  • , Sharon Zeligson
  • , Tal Dror
  • , Sophie Kirshberg
  • , Efrat Burak
  • , Reeval Segel
  • , Ephrat Levy-Lahad
  • , David Zangen
  • , Gheona Altarescu
  • , Shai Carmi*
  • , David A. Zeevi
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Purpose: To develop an economical, user-friendly, and accurate all-in-one next-generation sequencing (NGS)-based workflow for single-cell gene variant detection combined with comprehensive chromosome screening in a 24-hour workflow protocol. Methods: We subjected single lymphoblast cells or blastomere/blastocyst biopsies from four different families to low coverage (0.3×–1.4×) genome sequencing. We combined copy-number variant (CNV) detection and whole-genome haplotype phase prediction via Haploseek, a novel, user-friendly analysis pipeline. We validated haplotype predictions for each sample by comparing with clinical preimplantation genetic diagnosis (PGD) case results or by single-nucleotide polymorphism (SNP) microarray analysis of bulk DNA from each respective lymphoblast culture donor. CNV predictions were validated by established commercial kits for single-cell CNV prediction. Results: Haplotype phasing of the single lymphoblast/embryo biopsy sequencing data was highly concordant with relevant ground truth haplotypes in all samples/biopsies from all four families. In addition, whole-genome copy-number assessments were concordant with the results of a commercial kit. Conclusion: Our results demonstrate the establishment of a reliable method for all-in-one molecular and chromosomal diagnosis of single cells. Important features of the Haploseek pipeline include rapid sample processing, rapid sequencing, streamlined analysis, and user-friendly reporting, so as to expedite clinical PGD implementation.

Original languageEnglish
Pages (from-to)1390-1399
Number of pages10
JournalGenetics in Medicine
Volume21
Issue number6
DOIs
StatePublished - 1 Jun 2019

Bibliographical note

Funding Information:
The authors acknowledge the Shaare Zedek Mirsky intramural grant and thank Rabbi David Fuld for funding this research. S. C. thanks the Israel Science Foundation grant 407/17.

Publisher Copyright:
© 2018, American College of Medical Genetics and Genomics.

Keywords

  • PGT
  • combined molecular PGD and comprehensive chromosome screening
  • low coverage sequencing
  • rapid diagnostic method

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