Tara Strong (voice actor of Twilight Sparkle) asking from brony community to help her friend, 14 yeas old girl Olivia who is also friend to her 2 sons who are friends to Olivia since kindergarten to help fund Olivias huge medical bills and operation. The girl battling metastasized lung cancer diffuse large B cell lymphoma and immune system complications.
Olivia's folks have thrown everything at pursuing the medically-indicated standard of care for her disease: chemotherapy regimens, broad-spectrum antibiotics, whatever it takes to keep her alive. Here http://www.equestriadaily.com/2016/07/tara-strong-and-teamollieoxen-need-your.html#disqus_thread
you can find all information of the story as well as the link for the fund.
I really felt bad for simply just reading such bad news and then leaving mining my own business. Spreading the word - the least thing I could do to help, especially to a person who might die very soon...