Dear Dr. Roach: I have Factor V Leiden, but I have been wanting to do testosterone replacement therapy. I have heard that testosterone causes blood clots.

The promise of stem cell therapy is powerful. Scientists can draw versatile cells from the human body and deliver them to repair injuries and fight disease from the inside out. But not all stem ...

Autologous T cell therapy for PRAME+ advanced solid tumors in HLA-A*02 patients: a phase 1 trial. Nature Medicine, 2025; DOI: 10.1038/s41591-025-03650-6 ...