- Histologically or cytologically confirmed solid tumors known to express C4.4a (eg, carcinomas of the lung, head & neck SCC, esophagus SCC (squamous cell carcinoma),colon, ovary, prostate, and breast) that are refractory to any standard therapy, or have no standard therapy available, or for which subjects actively refuse any treatment that would be regarded as standard and in whom, in the opinion of the investigator, experimental therapy with BAY1129980 may be beneficial.