One in vitro study showed that 99mTc-(V)DMSA uptake in cancer cell lines (human breast cancer; MCF-7, human glioblastoma multiform; G152, human fibrosarcoma; HT1080, lung adenocarcinoma; A549, human amelanomic melanoma; M3DAU, and grade III human glioblastoma; U-87-MG) is closely related to proliferation rate and focal adhesion kinase (FAK). Here, PTK2 is linked to glioblastoma.