The world of scientific research is constantly producing new discoveries that lead to a better understanding and treatment of various diseases. Cancer, as one of the most complex and widespread diseases, has always been at the center of attention. A particularly interesting question is why certain individuals, such as those with Down syndrome, suffer less frequently from certain cancers. Down syndrome is characterized by an extra copy of chromosome 21, which exerts various genetic effects on the body. Recent research has highlighted that the unique genes on chromosome 21 may provide potential protection against certain cancers. Discoveries by scientists could open new directions in cancer treatments and offer hope to…