Table 3 Brain white matter differences in MAP1B LoF carriers compared with controls

From: MAP1B mutations cause intellectual disability and extensive white matter deficit

White matter

MAP1B-FS

Controls-FS

β (95% CI)

P

Corpus callosum—anterior—volume

431.3 (155.9)

900.2 (153.7)

−2.6 (−3.4, −1.9)

1.9 × 10−11

Corpus callosum—posterior—volume

472.9 (141.4)

988.6 (156.7)

−2.5 (−3.3, −1.8)

1.0 × 10−10

Corpus callosum—total—volume

1689.3 (426.4)

3210.3 (486.3)

−2.4 (−3.2, −1.7)

5.5 × 10−10

LH—Cerebral white matter—volume

190965.3 (23104.5)

250084.3 (30115.5)

−2.2 (−2.9, −1.4)

4.0 × 10−08

Total cerebral white matter—volume

382905.6 (46892.5)

502178.8 (60387.8)

−2.1 (−2.9, −1.4)

5.1 × 10−08

RH—cerebral white matter—volume

191940.3 (23831.4)

252094.6 (30354.8)

−2.1 (−2.9, −1.3)

6.8 × 10−08

Corpus callosum—central—volume

268.2 (56.6)

438 (87.7)

−1.9 (−2.7, −1.1)

1.1 × 10−06

Corpus callosum—mid-posterior—volume

245.2 (60.4)

424.7 (92.3)

−1.8 (−2.6, −1.0)

4.7 × 10−06

Corpus callosum—mid-anterior—volume

271.8 (80.5)

458.8 (103.6)

−1.8 (−2.5, −1.0)

4.8 × 10−06

LH—white matter surface area

75187.5 (8576.7)

85866.9 (8321.5)

−1.5 (−2.3, −0.8)

7.9 × 10−05

RH—white matter surface area

75488.3 (8865.8)

86285.6 (8411.9)

−1.5 (−2.3, −0.8)

8.3 × 10−05

  1. The MAP1B-FS and Control-FS are unadjusted mean and SD MRI white matter volume (mm3) and grey matter volume (mm3), surface area (mm2) and thickness (mm) values derived from FS. Individuals’ FS values were inverse normal transformed and adjusted for sex, age, age2, scanner model and ICV where appropriate. The effect (β in SD) and P-value were calculated by comparing MAP1B LoF carriers (n = 10; FAM1-B1,-C1,-C2,-D1,-D2,-D3, FAM2-H1,-J1,-J2, FAM3-L1) with controls (n = 949) using a generalised least-squares regression with a variance–covariance matrix based on the kinship coefficient of each pair of individuals. See Supplementary Data 1 for the full list of 274 traits. Bonferroni significance level was set at 0.05/274 = 1.8 × 10−4
  2. LH: left hemisphere, RH: right hemisphere, SD: standard deviation, FS: FreeSurfer