Nippon Kayaku is a Japanese chemicals and pharmaceuticals group whose medicines business specialises in cancer: generic chemotherapy, supportive care products and biosimilars of antibodies such as trastuzumab for the Japanese market.
Nippon Kayaku, listed in Tokyo, is a diversified chemicals company whose pharmaceutical division concentrates on oncology in Japan, supplying generic cytotoxic drugs, supportive care medicines and biosimilar antibodies including a trastuzumab biosimilar, and running the domestic phase 3 trials that biosimilar approval in Japan requires. It appears on OnCo as a lead sponsor of phase 3 cancer trials on ClinicalTrials.gov.
The first targeted antibody for a solid tumour (1998), which turned HER2-positive breast cancer from the worst subtype into one of the most treatable.
Pirarubicin is a doxorubicin relative developed in Japan and used there and in China for breast cancer, lymphoma, bladder cancer and other tumours, including instillation into the bladder after tumour resection.