Why some breast cancers evade treatment: Protein secreted by T cells may explain resistant tumors

Up to 20% of hormone receptor-positive breast cancers don’t respond to antiestrogen therapies. A study led by researchers at UT Southwestern, published in the Journal of Clinical Investigation, suggests that a protein secreted by immune cells within these tumors causes them to grow even in the absence of estrogen.

This article was originally published on MedicalXpress.com

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