A Multicenter, Randomized, Open-Label, Phase 3 Trial Comparing Selpercatinib to Physician’s Choice of Cabozantinib or Vandetanib in Patients With Progressive, Advanced, Kinase Inhibitor-Naïve, RET-Mutant Medullary Thyroid Cancera
Unresectable, locally advanced and/or metastatic medullary thyroid cancer (MTC) and no prior treatment with kinase inhibitors for advanced/metastatic disease
Radiographic progressive, evaluable disease at screening
A defined RET gene alteration identified in a tumor, germline DNA, or blood sample
Tumor tissue in sufficient quantity to allow for retrospective central analysis of RET mutation status
Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
Adequate organ function
Patients with reproductive potential must use a highly effective contraceptive method for the duration of treatment and for 4 months after
Able to swallow capsules
Key Exclusion Criteria
An additional validated oncogenic driver in MTC, if known, that could cause resistance to selpercatinib treatment
Symptomatic central nervous system metastases, leptomeningeal carcinomatosis, or untreated spinal cord compression
Clinically significant active cardiovascular disease or history of myocardial infarction within 6 months
History of torsades de pointes
Prolongation of the QTc interval of >470 ms using Fridericia’s formula on more than one electrocardiogram during screening
Participants intended to receive vandetanib if QTc is >450 ms
Active bacterial, viral, or fungal infection, or serious uncontrolled and ongoing illness
Active or at significant risk for hemorrhage
Other malignancy unless nonmelanoma skin cancer, carcinoma in situ, or malignancy diagnosed ≥2 years previously and not currently active
Participants with multiple endocrine neoplasia type 2 (MEN2) associated pheochromocytoma may be eligible
a
This clinical trial is being conducted globally.
b
Administered at 160 orally BID.
c
Administered at 140 mg orally QD.
d
Administered at 300 mg orally QD.
For information on trial enrollment, locations, and more, call
1-800-545-5979.