Research Article

Genetic Interactions Explain Variance in Cingulate Amyloid Burden: An AV-45 PET Genome-Wide Association and Interaction Study in the ADNI Cohort

Table 1

Selected demographic and clinical characteristics of participants at the time of AV-45 PET scan.

HC ()EMCI ()LMCI ()AD ()

Age (years)74.51 (5.74)71.43 (7.28)73.03 (7.49)74.87 (9.05)
Women94 (49%)95 (44%)62 (41%)17 (38%)
Education (years)16.53 (2.64)15.95 (2.66)16.32 (2.90)15.67 (2.70)
APOE e4 allele present54 (28%)87 (40%)78 (51%)33 (73%)
CDR-SOB0.03 (0.13)1.22 (0.72)1.73 (0.94)4.36 (1.64)
Mini mental status examination29.07 (1.20)28.39 (1.46)27.25 (1.77)22.93 (2.08)
Logical memory immediate recall (WMS-R)14.46 (3.08)10.96 (2.77)7.32 (3.06)4.40 (2.52)
Logical memory delayed recall (WMS-R)13.55 (3.27)8.90 (1.72)4.22 (2.75)2.02 (2.17)

Normalized SUVR of cingulate amyloid burden1.211 (0.21)1.273 (0.23)1.274 (0.27)1.48 (0.24)

AD: Alzheimer’s disease; CDR–SOB: clinical dementia rating-sum of boxes; EMCI: early mild cognitive impairment; HC: healthy control; LMCI: late mild cognitive impairment; PET: positron emission tomography; WMS-R: Wechsler Memory Scale-Revised. Data are shown in the format of “number (%)” or “mean (SD).”