👉 Amarinus, also known as a "small-cancer" variant of the cancer-causing gene BRCA1, is a genetic mutation that can lead to an increased risk of developing breast and ovarian cancers. It affects the BRCA1 gene in humans, which encodes for a protein called BRCA1. This mutation typically occurs when the gene is mutated during the cell's development or repair process, leading to abnormal changes in how the genes are functioning.