In 2015 Petr was diagnosed with skin cancer, melanoma. A year later, the doctors found that cancer spread to his brain, left lung, right shoulder and lymph nodes. Thanks to recently developed targeted drugs for melanoma, Petr was able to achieve remission, but melanoma can still return at any time. His family is worried about his recent blood test results that appear to indicate that the medicine’s effect may be weakening. Petr’s physician had recommended switching to different therapy that will help his immune system to recognize cancer cells if they re-appear. The medications are very new and very expensive: Petr is trying to raise over $50,000 for his treatment. Unfortunately, hr was laid off after getting sick, and his wife is disabled. Petr will appreciate any help and support.