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Insights from outside BJOG

Assisted reproduction and cancer risk Knowledge regarding the safety of assisted reproductive treatment is of importance in informing prospective parents embarking on such therapies. Surveys concerning congenital abnormalities and childhood development patterns have been reassuring, but there have been no studies looking at the incidence of cancers in children born after assisted conception. A British survey now reports on the incidence of malignancies in over 100 000 children born since 1992 and followed up for an average of 7 years (Williams et al. N Engl J Med 2013;369:1819–27). The researchers found the overall number of cancers was similar to the anticipated incidence in the UK population matched for age and parental characteristics. They linked their follow up to the National Registry of Childhood Tumours with which it correlated, adding credence to the findings. This is reassuring, considering there are more than 5 million people worldwide who have been born using assisted conception since 1978.