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Anonymization of data is not a simple task. Even with the noblest of intentions things can go wrong. See the problems with the sharing of medical data in the UK and examples from the US [1].

[1] http://arstechnica.com/tech-policy/2009/09/your-secrets-live...

What do you mean "anonymized"? It's your DNA, it basically is you. Much more than your name, email address, or whatever you consider de-anonimization.

It's not you until you tie it to your identity. I leave "DNA" all over; people cannot match it to me unless they have an existing sample that is definitely from me.

They can get close if they have your relative's DNA.

http://www.bbc.co.uk/news/uk-england-somerset-36245888

A man killed a girl. His DNA was gathered at the scene. 26 years later his daughter committed a minor crime, and had her DNA taken as part of her arrest, which led them back to him.

Anonymized doesn't always cut it.

https://en.wikipedia.org/wiki/AOL_search_data_leak