PGT-A may overestimate impact of embryo abnormalities
A common IVF 'add-on' – preimplantation genetic testing for aneuploidy (PGT-A) – may overestimate the impact of embryo abnormalities, new research suggests...
David Cansfield
Senior research executive
David Cansfield is a Volunteer Writer at BioNews, and is a senior research executive at Research Partnership. Previously he worked as an Embryology Associate at the Centre for Reproductive and Genetic Health. He originally studied for Biomedical Sciences at the University of Manchester, and went on to obtain an MRes in Reproduction and Pregnancy at the University's Maternal and Fetal Health Research Centre. His MRes research investigated melatonin as a candidate therapy for fetal growth restriction.
BioNews Articles by David Cansfield
Image by Alan Handyside via the Wellcome Collection. Depicts a human egg soon after fertilisation, with the two parental pronuclei clearly visible.
Cannabis use may affect women's eggs
Cannabis may directly interfere with women's ability to conceive by affecting the health of their eggs...
Image by Christoph Bock/Max Planck Institute for Informatics via Wikimedia Commons. Depicts a DNA molecule that is methylated on both strands on the centre cytosine.
Epigenetic reprogramming aids development of human gametes in vitro
For the first time, human stem cells that were originally skin cells have been reprogrammed into early-stage sperm and egg precursors...
HFEA to increase compensation for UK sperm and egg donors
The Human Fertilisation and Embryology Authority has recommended that the compensation given to UK sperm and egg donors is raised for the first time in over a decade...
Studies cast further doubt on indiscriminate use of ICSI
No improvement was found by using ICSI for non-severe male factor infertility or when male factor fertility is not the cause of couples failing to conceive, two papers concluded...
Image by Alan Handyside via the Wellcome Collection. Depicts a human egg soon after fertilisation, with the two parental pronuclei clearly visible.
Analysis suggests decline in human sperm counts
Global sperm counts have declined in the last 50 years, an analysis of data published since 1973 has indicated...
Image by Sílvia Ferreira, Cristina Lopo and Eileen Gentleman via the Wellcome Collection. Depicts a single human stem cell embedded within a porous hydrogel matrix (false colour).
Spina bifida surgery carried out in uterus using stem cells from placenta
Multipotent stem cells obtained from the placenta have been used to successfully treat spina bifida during fetal surgery...
Image by Alan Handyside via the Wellcome Collection. Depicts a human egg soon after fertilisation, with the two parental pronuclei clearly visible.
Australia to trial uterus transplants next year
Twelve Australian women will become their country's first recipients of uterus transplants next year, including a mother-to-daughter transplant....
Male age has more impact on IVF birth rate than previously thought
Advanced paternal age has been found to influence IVF live birth rates more than previously thought...
Image by Alan Handyside via the Wellcome Collection. Depicts a human egg soon after fertilisation, with the two parental pronuclei clearly visible.
Rat testicle cells frozen for 23 years make sperm
Rat testicle stem cells that were frozen for 23 years and then grafted onto infertile mice, have been shown to produce viable sperm...