What is the fine-grained topic of the following text: A 3-day international conference on human gene editing has ended, with the conferees reportedly having issued a statement declaring it would be “irresponsible” to try to initiate a human pregnancy with an embryo that had some genes edited by modern techniques, much less create a human embryo using sperm or an egg that had been gene-edited. Only return the topic.
International conference on human gene editing