SOR-C13 TFA, a truncated carboxy-terminal peptide, serves as a potent TRPV6 antagonist, demonstrating high affinity with an IC 50 value of 14 nM. TRPV6, a non-voltage-gated calcium channel linked to malignancy and poor prognosis in breast cancer, is effectively targeted by SOR-C13 TFA, indicating its anticancer activity [1].