Purpose: There is little long-term, population-based data on uptake of prenatal diagnosis for Huntington disease (HD), a late-onset autosomal dominant neurodegenerative disorder, and the effect of the availability of preimplantation genetic diagnosis (PGD) on families’ decisions about conventional prenatal diagnosis is not known. We report trends in prenatal diagnosis and preimplantation diagnosis for HD in the United Kingdom since services commenced. Methods: Long-term UK-wide prospective case record-based service evaluation in 23 UK Regional Genetic Centres 1988–2015, and four UK PGD centers 2002–2015. Results: From 1988 to 2015, 479 prenatal diagnoses were performed in the UK for HD. An exclusion approach was used in 150 (31%). The annual rate of HD prenatal diagnosis has remained around 18 (3.5/million) over 27 years, despite a steady increase in the use of PGD for HD since 2002. Conclusion: Although increasing number of couples are choosing either direct or exclusion PGD to prevent HD in their offspring, both direct and exclusion prenatal diagnosis remain important options in a health system where both PGD and prenatal diagnosis are state funded. At-risk couples should be informed of all options available to them, preferably prepregnancy.
Bibliographical noteWe are grateful to UK genetics centers for supplying the data, and Kirsty Mathieson, Vivien Vaughan, and Stella Sihlabela for collating data.
- chorionic villi
- Huntington disease
- neurodegenerative disorders
- preimplantation genetic diagnosis
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- School of Medicine, Medical Sciences & Nutrition, Molecular and Cellular Function
- School of Medicine, Medical Sciences & Nutrition, Aberdeen Cancer Centre
- School of Medicine, Medical Sciences & Nutrition, Applied Medicine - Personal Chair (Clinical)
- School of Medicine, Medical Sciences & Nutrition, Institute of Medical Sciences
Person: Clinical Academic