Complex sentence: Various types of cancers including leukemia, melanoma, solid tumors, etc are being targeted and in some cases, very specific cancer types such as'melanoma positive for cyclin D1 expression' are targeted to maximize the efficacy.
Split into simpler sentences: Various types of cancers including leukemia, melanoma, solid tumors, and other types are being targeted. In some cases, very specific cancer types, such as'melanoma positive for cyclin D1 expression' are targeted to maximize the efficacy.