According to this article in the News Telegraph, a UK team plans to open a clinic that will specialize in the creation of "saviour siblings"--that is, children conceived so as to provide a source of genetically matched organs (including blood, etc.) for a sick brother or sister.
Parents doing this isn't new news--it's happened in the US and in the UK. What's new is a clinic designed for this specific purpose.
And while we're on the topic, if you haven't already read Jodi Picoult's book, My Sister's Keeper, this would be a good time . . . . check out the new WBP book club here.