The risk of being born with a major heart defect is 36% higher in babies who were conceived using assisted reproductive technology, such as in vitro fertilisation (IVF), according to a study based on 7.7 million children born across Scandinavia.
https://www.scimex.org/newsfeed/expert-reaction-ivf-babies-may-have-a-36-percent-higher-chance-of-major-heart-defects