Skip to main content

Table 1 Demographic characteristics of the patients and genetic characteristics of the lymphoblastoid cell lines in the patients with Huntington's disease.

From: DNA instability in replicating Huntington's disease lymphoblasts

Cell lines

No.

Gender

Male/Female

Mean

expanded CAG ± SD

(range)

Mean

Age at onset ± SD

(range)

Over-time

Triplet variation

(ΔCAG)

Mean

Mosaicism degree ± SD

(No. peaks)

Expansions/contractions

(triplet changes in %)

Lymphoblats with low mutation penetrance

(36–41 CAG)

6

3/3

40.167 ± 0.983

(39–41)

57.250 ± 5.62

(50–63)

0.167 ± O.408

(0–1)

6.333 ± 1.966a

(5–10)

1/0

(1/6 or 17%)

Lymphoblats with usually expanded mutation penetrance

(42–59 CAG)

43

22/21

45.628 ± 3.471

(42–54)

40.643 ± 10.094

(21–57)

0.628 ± 0.874

(0–3)

7.442 ± 2.797b

(3–14)

6/11

(17/43 or 39%)

Lymphoblasts with high mutation penetrance

(60–120 CAG)

9

6/3

80 ± 21.042

(64–120)

12.750 ± 8.396

(3–25)

3.429 ± 1.512

(2 ≥ 5)

15.429 ± 11.238c

(7–40)

6/3

(9/9 or 100%)d

Total

58

31/27

50.397 ± 15.416

(39–120)

37.741 ± 14.819

(3–63)

0.929 ± 1.333

(0–5)

8.321 ± 5.250

(3–40)

13/14

(27/58 or 46%)

  1. Greater CAG repeat expansions are associated with a larger number of CAG repeat changes (i.e. expansion/contraction events) in passaged lymphoblasts. DNA from passaged lymphoblasts with highest expansions of 60 CAG repeats or more causing juvenile Huntington's disease shows a greater maximum number of peaks (p > 0.001; c vs a and b) indicating the largest triplet mosaicism and a larger number of expansion events (d) than other cell lines.