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Table 1 Demographic characteristics and ABCB1 genotype, allele and haplotype frequencies (n, (%))
| Total POP (n = 154) | Controls (n = 41) | AD (n = 48) | VaD (n = 19) | OD (n = 26) | MCI (n = 20) | |
|---|---|---|---|---|---|---|
| Age, Mean ± SD (range) | 81.7 ± 5.9 (63.3–94.8) | 81.9 ± 5.7 (69.5–94.5) | 81.0 ± 5.5 (71.9–93.3) | 83.6 ± 5.6 (67.6–89.7) | 82.1 ± 5.2 (69.6–94.8) | 80.5 ± 6.9 (63.3–90.7) |
| Gender, n (%) female | 92 (59.7) | 27 (65.9) | 33 (68.8) | 8 (42.1) | 11 (42.3) | 13 (65.0) |
| Education, median IQR (range) | 4 IQR: 3 (1–7) | 4 IQR:3 (1–6)* | 4 IQR:3 (1–7)† | 5 IQR:2 (4–6)† | 4 IQR: 3 (2–7)† | 4 IQR:3 (2–6)* |
| Baseline MMSE, Mean ± SD (range) | 21.2 ± 5.7 (3–30) | 26.6 ± 2.2 (21–29)¶ | 18.2 ± 4.4†,§ (6–26)# | 18.1 ± 7.5†,§ (3–29) | 20.9 ± 5.2† (12–30)† | 25.3 ± 2.7 (19–30)† |
| Ethnicity, n (%) CAU | 151 (98.1) | 40 (97.6) | 48 (100) | 19 (100) | 25 (96.2) | 19 (95.0) |
| SNP C1236T (12) | ||||||
| CC | 44 (28.6) | 12 (29.3) | 12 (25.0) | 3 (15.8) | 7 (26.9) | 10 (50.0) |
| CT | 75 (48.7) | 20 (48.8) | 25 (52.1) | 10 (52.6) | 14 (53.8) | 6 (30.0) |
| TT | 35 (22.7) | 9 (22.0) | 11 (22.9) | 6 (31.6) | 5 (19.2) | 4 (20.0) |
| Allele freq T (%) | 0.471 | 0.463 | 0.490 | 0.579 | 0.462 | 0.350 |
| SNP G2677T/A (21) | ||||||
| GG | 46 (29.9) | 12 (29.3) | 13 (27.1) | 4 (21.2) | 7 (26.9) | 10 (50.0) |
| GT | 67 (43.5) | 16 (39.0) | 24 (50.0) | 9 (47.4) | 13 (50.0) | 5 (25.0) |
| TA | 3 (1.9) | 2 (4.9) | 0 (0.0) | 0 (0.0) | 1 (3.8) | 0 (0.0) |
| TT | 38 (24.7) | 11 (26.8) | 11 (22.9) | 6 (31.6) | 5 (19.2) | 5 (25.0) |
| Allele freq T (%) | 0.474 | 0.488 | 0.479 | 0.553 | 0.462 | 0.375 |
| Allele freq A (%) | 0.010 | 0.024 | 0.000 | 0.000 | 0.019 | 0.000 |
| SNP C3435T (26) | ||||||
| CC | 32 (20.8) | 9 (22.0) | 5 (10.4) | 2 (10.5) | 8 (30.8) | 8 (40.0) |
| CT | 70 (45.5) | 18 (43.9) | 26 (54.2) | 9 (47.4) | 10 (38.5) | 7 (35.0) |
| TT | 52 (33.8) | 14 (34.1) | 17 (35.4) | 8 (42.1) | 8 (30.8) | 5 (25.0) |
| Allele freq T (%) | 0.565 | 0.561 | 0.625 | 0.658 | 0.500 | 0.425 |
| Haplotype | Total POPa (n = 148) | Controls (n = 38) | AD (n = 48) | VaD (n = 19) | OD (n = 24) | MCI (n = 19) |
| T-T-T | 130 (0.439) | 33 (0.434) | 43 (0.448) | 20 (0.526) | 22 (0.458) | 12 (0.316) |
| C-G-C | 114 (0.385) | 29 (0.382) | 34 (0.354) | 11(0.289) | 21 (0.438) | 19 (0.500) |
| C-G-T | 38 (0.128) | 10 (0.132) | 15 (0.156) | 5 (0.132) | 4 (0.083) | 4 (0.105) |
| C-T-T | 5 (0.017) | 3 (0.039) | 1 (0.010) | 0 (0.000) | 0 (0.000) | 1 (0.026) |
| T-G-C | 4 (0.014) | 1 (0.013) | 2 (0.021) | 1 (0.026) | 0 (0.000) | 0 (0.000) |
| T-T-C | 5 (0.017) | 0 (0.000) | 1 (0.001) | 1 (0.026) | 1 (0.021) | 2 (0.053) |
