This invention relates to the treatment of
breast cancer in a subject, and the subject can be either a male or female subject. Including methods of: treating
metastatic breast cancer;
refractory breast cancer; AR-positive
breast cancer; AR-positive
refractory breast
cancer; AR-positive
metastatic breast cancer; AR-positive and ER-positive breast
cancer;
triple negative breast
cancer;
advanced breast cancer; breast cancer that has failed
selective estrogen receptor modulator (SERM) (
tamoxifen,
toremifene,
raloxifene),
gonadotropin-releasing
hormone (GnRH)
agonist (
goserelin),
aromatase inhibitor (AI) (
letrozole,
anastrozole,
exemestane),
cyclin-dependent
kinase 4 / 6 (CDK 4 / 6) inhibitor (
palbociclib (Ibrance),
ribociclib (Kisqali), lerociclib, abemaciclib (Vorzenio), trilaciclib, lerociclib), mTOR inhibitor (
everolimus),
trastuzumab (Herceptin, ado-
trastuzumab emtansine),
pertuzumab (Perjeta), alpelisib (Piqray) (an inhibitor of
phosphatidylinositol-3-
kinase subunit alpha (PI3Kα)),
lapatinib,
neratinib (Nerlynx),
olaparib (Lynparza) (an inhibitor of the
enzyme poly ADP
ribose polymerase (PARP)),
bevacizumab (Avastin), and / or
fulvestrant treatments;
metastasis in a subject suffering from breast cancer; HER2-positive; treating a subject suffering from ER
mutant expressing breast cancer and / or treating breast cancer in a subject, by first determining the 18F-16β-fluoro-5α-
dihydrotestosterone (18F-DHT) tumor uptake and identifying said subject as having AR-positive breast cancer based on 18F-DHT tumor uptake, comprising administering to the subject a therapeutically effective amount of a
selective androgen receptor modulator (SARM) compound and a
cyclin-dependent
kinase 4 / 6 (CDK 4 / 6) inhibitor.