Pemtumomab is a mouse

Mouse

A mouse is a small mammal belonging to the order of rodents. The best known mouse species is the common house mouse . It is also a popular pet. In some places, certain kinds of field mice are also common. This rodent is eaten by large birds such as hawks and eagles...

 monoclonal antibody used to treat cancer. The substance has affinity to various types of cancer, like ovarian cancer

Ovarian cancer

Ovarian cancer is a cancerous growth arising from the ovary. Symptoms are frequently very subtle early on and may include: bloating, pelvic pain, difficulty eating and frequent urination, and are easily confused with other illnesses....

 and peritoneal cancer, via the polymorphic epithelial mucin (PEM or MUC-1) and delivers the radioisotope Yttrium-90

Yttrium-90

Yttrium-90 is a medically significant isotope of yttrium.It emits beta rays of 2.3 MeV.Yttrium-90 is a decay product of Strontium-90 which makes up about 5% of the Nuclear daughter isotopes when Uranium is fissioned....

 into the tumour. , it is undergoing Phase III clinical trials.

It has been granted orphan drug

Orphan drug

An orphan drug is a pharmaceutical agent that has been developed specifically to treat a rare medical condition, the condition itself being referred to as an orphan disease...

status in Europe.