Joyce Harper

Summary

Affiliation: University College London
Country: UK

Publications

  1. ncbi When and how should new technology be introduced into the IVF laboratory?
    Joyce Harper
    UCL Centre for PG and D, Institute for Womens Health, UCL and Centre for Reproductive and Genetic Health, University College London Hospital, London, UK
    Hum Reprod 27:303-13. 2012
  2. ncbi Recent advances and future developments in PGD
    J C Harper
    Department of Obstetrics and Gynaecology, UCL, London, U K
    Prenat Diagn 19:1193-9. 1999
  3. ncbi Genetics of gametes and embryos
    Joyce C Harper
    Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Eur J Obstet Gynecol Reprod Biol 115:S80-4. 2004
  4. ncbi ESHRE PGD Consortium data collection V: cycles from January to December 2002 with pregnancy follow-up to October 2003
    J C Harper
    UCL Centre for PGD, Department of Obstetrics and Gynecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Hum Reprod 21:3-21. 2006
  5. ncbi What next for preimplantation genetic screening?
    Joyce Harper
    UCL Centre for PGD, Institute for Women s Health, University College London, 86 96 Chenies Mews, WC1E6HX London, UK
    Hum Reprod 23:478-80. 2008
  6. ncbi ESHRE PGD consortium data collection VII: cycles from January to December 2004 with pregnancy follow-up to October 2005
    J C Harper
    UCL Centre for PGD, Institute for Women s Health, University College London, 86 96 Chenies Mews, WC1E6HX London, UK
    Hum Reprod 23:741-55. 2008
  7. ncbi Accreditation of the PGD laboratory
    J C Harper
    UCL Centre for PG and D, Institute for Women s Health, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Hum Reprod 25:1051-65. 2010
  8. ncbi What next for preimplantation genetic screening (PGS)? A position statement from the ESHRE PGD Consortium Steering Committee
    Joyce Harper
    UCL Centre for PG and D, Institute for Women s Health, University College London, 86 96 Chenies Mews, WC1E6HX London, UK
    Hum Reprod 25:821-3. 2010
  9. ncbi The use of arrays in preimplantation genetic diagnosis and screening
    Joyce C Harper
    Human Genetics and Embryology, University College London Centre for Preimplantation Genetics and Diagnosis, Institute for Women s Health, University College London Hospital, London, United Kingdom
    Fertil Steril 94:1173-7. 2010
  10. ncbi ESHRE PGD Consortium data collection X: cycles from January to December 2007 with pregnancy follow-up to October 2008
    J C Harper
    UCL Centre for PG and D, Institute for Women s Health, University College London, 86 96 Chenies Mews, London, UK
    Hum Reprod 25:2685-707. 2010

Collaborators

Detail Information

Publications33

  1. ncbi When and how should new technology be introduced into the IVF laboratory?
    Joyce Harper
    UCL Centre for PG and D, Institute for Womens Health, UCL and Centre for Reproductive and Genetic Health, University College London Hospital, London, UK
    Hum Reprod 27:303-13. 2012
    ..All IVF clinics need to consider the safety and efficacy of new technologies before introducing them...
  2. ncbi Recent advances and future developments in PGD
    J C Harper
    Department of Obstetrics and Gynaecology, UCL, London, U K
    Prenat Diagn 19:1193-9. 1999
    ..These methods will hopefully enable more accurate and a greater number of diseases to be diagnosed at the single cell level...
  3. ncbi Genetics of gametes and embryos
    Joyce C Harper
    Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Eur J Obstet Gynecol Reprod Biol 115:S80-4. 2004
    ..For patients at risk of transmitting a specific genetic or chromosomal abnormality, 1-2 blastomeres are biopsied from embryos and specific genes or chromosomes analysed. Normal embryos are then transferred to the uterus...
  4. ncbi ESHRE PGD Consortium data collection V: cycles from January to December 2002 with pregnancy follow-up to October 2003
    J C Harper
    UCL Centre for PGD, Department of Obstetrics and Gynecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Hum Reprod 21:3-21. 2006
    ..Data collection V is compared with the previous cumulative data collection (I-IV), which comprised 4058 PGD/PGS cycles that reached oocyte retrieval...
  5. ncbi What next for preimplantation genetic screening?
    Joyce Harper
    UCL Centre for PGD, Institute for Women s Health, University College London, 86 96 Chenies Mews, WC1E6HX London, UK
    Hum Reprod 23:478-80. 2008
    ..The debate on the usefulness of PGS is ongoing; the only effective way to resolve the debate is to perform more well-designed and well-executed randomized clinical trials...
  6. ncbi ESHRE PGD consortium data collection VII: cycles from January to December 2004 with pregnancy follow-up to October 2005
    J C Harper
    UCL Centre for PGD, Institute for Women s Health, University College London, 86 96 Chenies Mews, WC1E6HX London, UK
    Hum Reprod 23:741-55. 2008
    ..Data VII is compared with the cumulative data for data collections I-VI...
  7. ncbi Accreditation of the PGD laboratory
    J C Harper
    UCL Centre for PG and D, Institute for Women s Health, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Hum Reprod 25:1051-65. 2010
    ..The focus is on the European environment although the principles are globally applicable...
  8. ncbi What next for preimplantation genetic screening (PGS)? A position statement from the ESHRE PGD Consortium Steering Committee
    Joyce Harper
    UCL Centre for PG and D, Institute for Women s Health, University College London, 86 96 Chenies Mews, WC1E6HX London, UK
    Hum Reprod 25:821-3. 2010
    ..To evaluate benefits of PGS, an ESHRE trial has recently been started on patients with AMA using polar body biopsy and array-comparative genomic hybridization, which should bring more information on this patient group in the near future...
  9. ncbi The use of arrays in preimplantation genetic diagnosis and screening
    Joyce C Harper
    Human Genetics and Embryology, University College London Centre for Preimplantation Genetics and Diagnosis, Institute for Women s Health, University College London Hospital, London, United Kingdom
    Fertil Steril 94:1173-7. 2010
    ..Each array can determine the number of chromosomes, however, SNP-based arrays can also be used to haplotype the sample...
  10. ncbi ESHRE PGD Consortium data collection X: cycles from January to December 2007 with pregnancy follow-up to October 2008
    J C Harper
    UCL Centre for PG and D, Institute for Women s Health, University College London, 86 96 Chenies Mews, London, UK
    Hum Reprod 25:2685-707. 2010
    ..Data X is compared with the cumulative data for data collections I-IX...
  11. ncbi Preimplantation genetic diagnosis: state of the art 2011
    Joyce C Harper
    UCL Centre for PG and D, Institute for Womens Health, University College London, London, UK
    Hum Genet 131:175-86. 2012
    ..For PGS, RCTs need to be conducted using both array-CGH and SNP arrays to determine if either will result in an increase in delivery rates...
  12. ncbi Pre-implantation genetic diagnosis
    Joyce C Harper
    UCL Centre for Pre implantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, UK
    Best Pract Res Clin Obstet Gynaecol 16:659-70. 2002
    ..The ethical implications of pre-implantation genetic diagnosis are immense as the technique has already been used for social sexing and human leukocyte antigen matching...
  13. ncbi Preimplantation genetic diagnosis for single gene disorders: experience with five single gene disorders
    Joyce C Harper
    Department of Obstetrics and Gynaecology, University College London, London, UK
    Prenat Diagn 22:525-33. 2002
    ....
  14. ncbi Preimplantation genetic diagnosis
    J C Harper
    University College London Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, UK
    Curr Opin Obstet Gynecol 12:67-72. 2000
    ..Technical difficulties have arisen with preimplantation genetic diagnosis, such as allele dropout and chromosomal mosaicism. However, it is hoped that these difficulties can be overcome in the future with the advent of new techniques...
  15. ncbi Preimplantation genetic diagnosis for myotonic dystrophy type 1: detection of crossover between the gene and the linked marker APOC2
    Georgia Kakourou
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, UK
    Prenat Diagn 27:111-6. 2007
    ..To report two cases of preimplantation genetic diagnosis (PGD) for myotonic dystrophy type I (DM1) where cross-over between the DMPK locus and a linked polymorphic marker APOC2 was detected...
  16. ncbi Preimplantation genetic diagnosis of chromosome abnormalities: implications from the outcome for couples with chromosomal rearrangements
    M Simopoulou
    UCL Centre for Preimplantation Genetic Diagnosis and Assisted Conception Unit, Department of Obstetrics and Gynaecology, University College London, London, UK
    Prenat Diagn 23:652-62. 2003
    ....
  17. ncbi Evaluation of array comparative genomic hybridization for genetic analysis of chorionic villus sampling from pregnancy loss in comparison to karyotyping and multiplex ligation-dependent probe amplification
    Maitreyee Deshpande
    UCL Centre for PG and D, Institute for Women s Health, University College London, London, United Kingdom
    Genet Test Mol Biomarkers 14:421-4. 2010
    ..It was determined which technique gave the most valuable information...
  18. ncbi A successful strategy for preimplantation diagnosis of medium-chain acyl-CoA dehydrogenase (MCAD) deficiency
    A Ioulianos
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Prenat Diagn 20:593-8. 2000
    ..The embryos generated through IVF arrested on day two post-insemination and consequently none were available for transfer; all available blastomeres were used to confirm the accuracy and reliability of the diagnostic assays...
  19. ncbi Analysis of the evolution of chromosome abnormalities in human embryos from Day 3 to 5 using CGH and FISH
    D D Daphnis
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Mol Hum Reprod 14:117-25. 2008
    ..The main two mechanisms identified were whole or partial chromosome loss and gain. These were observed in embryos examined on both Day 3 and 5...
  20. ncbi FISH analysis on day 5 post-insemination of human arrested and blastocyst stage embryos
    P Ruangvutilert
    Department of Obstetrics and Gynaecology, University College London, UK
    Prenat Diagn 20:552-60. 2000
    ..For PGD, this high prevalence of mosaicism persisting to the blastocyst stage may pose problems similar to mosaicism in cleavage stage embryos...
  21. ncbi Variable aneuploidy mechanisms in embryos from couples with poor reproductive histories undergoing preimplantation genetic screening
    A Mantzouratou
    Department of Obstetrics and Gynaecology, University College London Centre for Preimplantation Genetic Diagnosis, and The Assisted Conception Unit, University College London Hospitals Foundation Trust, UK
    Hum Reprod 22:1844-53. 2007
    ..Preimplantation genetic screening (PGS) is used to determine the chromosome status of human embryos from patients with advanced maternal age (AMA), recurrent miscarriage (RM) or repeated implantation failure (RIF)...
  22. ncbi Relative efficiency of FISH on metaphase and interphase nuclei from non-mosaic trisomic or triploid fibroblast cultures
    P Ruangvutilert
    Department of Obstetrics and Gynaecology, University College London, London, UK
    Prenat Diagn 20:159-62. 2000
    ..In the case of preimplantation diagnosis, the accuracy can be improved by the use of two probes per chromosome or by the analysis of two cells from each embryo...
  23. ncbi Detailed FISH analysis of day 5 human embryos reveals the mechanisms leading to mosaic aneuploidy
    D D Daphnis
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, 86-96 Chenies Mews, London, WC1E 6HX, UK
    Hum Reprod 20:129-37. 2005
    ..CONCLUSIONS: Post-zygotic chromosome loss was the most common mechanism leading to aneuploidy mosaicism for both groups, followed by chromosome gain, with fewer examples of mitotic non-disjunction...
  24. ncbi Pregnancy following preimplantation genetic diagnosis for Crouzon syndrome
    P M Abou-Sleiman
    UCL Centre for Preimplantation Genetic Diagnosis and the Assisted Conception Unit, Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Mol Hum Reprod 8:304-9. 2002
    ..All of the cells showed expected genotypes at the D21S11 locus with only one incidence of allele drop-out. A total of five embryos were transferred, two in the first cycle and three in the second, resulting in a singleton pregnancy...
  25. ncbi First application of preimplantation genetic diagnosis to neurofibromatosis type 2 (NF2)
    P M Abou-Sleiman
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Prenat Diagn 22:519-24. 2002
    ..Out of a total of 32 embryos tested only four were found not to carry the mutation. The reasons for this apparent skew remain unknown...
  26. ncbi Preimplantation genetic diagnostic protocols for alpha- and beta-thalassaemias using multiplex fluorescent PCR
    W Piyamongkol
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, University College London, London, UK
    Prenat Diagn 21:753-9. 2001
    ..The close similarity between the DNA sequences of beta-globin and delta-globin was also found to be an important issue that necessitated careful design of primers for the beta-globin gene...
  27. ncbi Comparative genomic hybridization analysis of human oocytes and polar bodies
    E Fragouli
    Department of Obstetrics and Gynaecology, UCL Centre for Preimplantation Genetic Diagnosis, University College London, London, UK
    Hum Reprod 21:2319-28. 2006
    ..We optimized and evaluated a CGH protocol for the chromosomal analysis of first polar bodies (PBs) and oocytes. The protocol was then employed to obtain a detailed picture of meiosis I errors in human oogenesis...
  28. ncbi Preimplantation genetic diagnosis of the fragile X syndrome by use of linked polymorphic markers
    A Apessos
    UCL Centre for PGD, Department of Obstetrics and Gynaecology, University College London, 86 96 Chenies Mews, London WC1E 6HX, UK
    Prenat Diagn 21:504-11. 2001
    ..Use of this approach is accurate and applicable to a larger number of patients at risk of transmitting fragile X to their offspring...
  29. ncbi Detection of aneuploidy by array comparative genomic hybridization using cell lines to mimic a mosaic trophectoderm biopsy
    Thalia Mamas
    UCL Centre for PGD, Institute for Women s Health, University College London, London, United Kingdom
    Fertil Steril 97:943-7. 2012
    ..To examine the effect of mosaicism in the array comparative genomic hybridization result during preimplantation genetic screening after blastocyst biopsy...
  30. ncbi A successful strategy for preimplantation genetic diagnosis of myotonic dystrophy using multiplex fluorescent PCR
    W Piyamongkol
    UCL Centre for Preimplantation Genetic Diagnosis and the Assisted Conception Unit, Department of Obstetrics and Gynaecology, University College London, 86-96 Chenies Mews, London WC1E 6HX, UK
    Prenat Diagn 21:223-32. 2001
    ..This paper reports the first clinical experience and pregnancies following PGD for DM using a multiplex fluorescent PCR protocol...
  31. ncbi Preimplantation genetic diagnosis for myotonic dystrophy type 1 in the UK
    Georgia Kakourou
    Institute for Women s Health, UCL Centre for Preimplantation Genetics, 86 96 Chenies Mews, London WC1E 6HX, UK
    Neuromuscul Disord 18:131-6. 2008
    ..This paper reviews the largest number of cycles of PGD for DM1 in the UK indicating that PGD is a practical option for affected couples...
  32. ncbi Complete cytogenetic investigation of oocytes from a young cancer patient with the use of comparative genomic hybridisation reveals meiotic errors
    Elpida Fragouli
    UCL Centre for Preimplantation Genetic Diagnosis, Department of Obstetrics and Gynaecology, 86 96 Chenies Mews, University College London, London, WC1E 6HX, UK
    Prenat Diagn 26:71-6. 2006
    ..The complete cytogenetic investigation of human oocytes and the corresponding first polar bodies (PBs) derived from an 18-year old female cancer patient...
  33. ncbi Preimplantation genetic diagnosis
    The-Hung Bui
    Department of Molecular Medicine, Clinical Genetics Unit, Karolinska Hospital, Stockholm, Sweden
    Clin Obstet Gynecol 45:640-8; discussion 730-2. 2002