Amgen is keen to promote its BiTE drug development platform as it looks to grow its oncology portfolio. Its first approved drug using BiTE, leukemia fighter Blincyto, has been gaining steam lately with sales increases of 37% for the fourth quarter of 2018 and 31% for the full year, the company reported. Amgen also presented data at ASCO on two BiTE-developed candidates: AMG 420 to treat multiple myeloma and AMG 212 for prostate cancer. And it has more in the pipeline.