Older more fit KL-VS heterozygotes have more favorable AD-relevant biomarker profiles. - Jarchow M; Driscoll I; Breidenbach BM; Cook N; Gallagher CL; Johnson SC; Asthana S; Hermann BP; Sager MA; Blennow K; Zetterberg H; Carlsson CM; et al. (MedRxiv : the preprint server for health sciences, 2025)