LTF and Alzheimer disease: Among the two lactoferrin-targeting SOMAmers, Seq.2780.35 (LTF2) showed a weak and exclusive association with CSF Aβ42 and syndromic status, whereas Seq.14755.4 (LTF1) was weakly associated with CSF p-tau and t-tau AD biomarker levels displayed expression-dependent stratification consistent with a ventricular-volume–related dilution effect rather than disease.